BHT: Mar 2010

BULK HANDLING TODAY March 2010 1

2 BULK HANDLING TODAY March 2010

BULK HANDLING TODAY March 2010 �

March 2010

ContentsCover Story5 Loading Bulk Efficiently

Trucking9 Promise of Stronger 2010 Truck Sales11 New Name, Bigger Footprint

Conveying13 Technical Communique15 One of a Kind19 Just 30 Minutes21 Setting the Benchmark

Weighing25 Mill Magnetic Systems29 Precise and Reliable

SAIMH31 Annual General Meeting

33 Market Forum

Endorsing BodiesCMA (Conveyor Manufacturers Association)

HCASA (Hydraulic Conveying Association of SA)

LEEASA (Lifting Equipment Engineering Association of South Africa)

RFA (Road Freight Association)

SAIMechE (SA Institution of Mechanical Engineering)

SAIMH (SA Institute of Materials Handling)

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Proprietor and Publisher:PROMECH PUBLISHINGTel: (011) 781-1401Fax: (011) 781-1403E-mail:[email protected] Website: www.promech.co.zaManaging Editor: Susan CustersJoint Editor: Andrew Lanham

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CopyrightAll rights reserved. No edi-torial matter published in “Bulk Handling Today” may be reproduced in any form or language without written permission of the publishers. While every effort is made to ensure accurate reproduction, the editor, authors, publishers and their employees or agents shall not be responsible or in any way liable for any errors, omissions or inaccuracies in the publication, whether arising from negligence or otherwise or for any conse-quences arising therefrom. The inclusion or exclusion of any product does not mean that the publisher or editorial board advocates or rejects its use either generally or in any particular field or fields.

Featured on the cover:

Bateman Engineered TechnologiesTel: (011) 201-2300Email: [email protected]

� BULK HANDLING TODAY March 2010

CONVEYOR MANUFACTURERS ASSOCIATION

From the Chairman’s Desk

What made the day even more special was that one of the players, Quentis Venter, who plays off a 7 handicap and was in the Fenner fourball, achieved the perfect fluke on the 12th hole: a

Hole-in-One. Many congratulations, Quentis!

A big “thank you” to all who participated in whatever way to make the most successful CMA Annual Golf Day in the 17 years that the tournament has been running! This year the event was again held at the Benoni

Country Club. The weather was superb on that Wednesday and the 29 fourballs made it round the magnificent course without having to don their rain jackets, although some of the fairways were still suffering the effects of heavy rain over the past few weeks. The resident Pro, Bryan Pritz and his team do an excellent job and al-

ways go out of their way to ensure that everything runs smoothly.

Hole-in-One, Quentis Venter, pictured on the right

Nearest-longest, Frikkie Ras

The Fenner team

Quentis Venter achieved the perfect fluke on the 12th hole

The Fenner team then went on to win the t ou rnamen t on 87 points, retaining the silverware for another year. Well done to Neels Venter, Quentis Venter, Gavin McKen-zie and Neville Conchar. Run-ners up with 86 was the David Brown three-ball, with Roy-mec2 finishing on 83 and Bosworth on 82. The Nearest-the-Pin and Longest Drive were both won by Frikkie Ras playing for Bauer Geared Motors. RSV Enco came in with the longest day.

Excellent useA special thank you to Jay Pil-lay (Brelko) for assisting Chris in getting the guys to part with their money for the raffle – a whopping R2 760 was collected, netting over R2 470 for the South African Guide Dogs for the Blind Association. Thank you all for your generosity: the money will be put to ex-cellent use by SAGA. And lastly, let me extend thanks to all the sponsors of holes and for the generous dona-tion of prizes.

Simon Curry, Chairman


COVER STORY

Bulk Handling Today” speaks to Project Manager, Albert Hardie, of Bateman En-gineered Technologies about a manganese load-out station the company has recently

built in the Northern Cape. “We’ve just completed the cold commissioning of this project in a record time of just 32 weeks, compared with the usual twelve to fourteen months it takes to build such a

station,” he says.

“As it was for manganese, we had to give special consideration to the highly abrasive nature of the product, but our experience with iron ore and other load-out stations provided a good base to work from.”

This latest addition adds to a reference list dating over 38 years and includes over 24 load-out sta-tions constructed around the world. These stations handle commodities such as iron ore, coal, coke, limestone, fertiliser and manganese ore.

Transit pointAlthough the manganese station currently only loads 2 000 tons an hour, other stations have been built to handle capacities of 7 000 tons an hour.

Trains move through the station at a continuous speed of about 0.5 km/h, with each rail wagon being filled with the loaded commodity in less than a minute. This allows the train, which consists of over 100 wagons, a two hour turnaround time before it departs for the export terminal.

How it worksWillem du Toit, the Bulk Materials Handling Me-chanical Engineer who worked on the manganese

Loading Bulk EfficientlyLoad-out stations are in big demand for mining operations which depend on rail transport of their raw materials. The

Transnet rail system works on strict allocation times for trains to be loaded to very strict specifications and if these are not

met, penalties are imposed.

The llatest load-out staion from Bateman for manganese

We had to give special consideration to the highly abrasive nature of the product


COVER STORY

Project Manager, Albert Hardie, of Bateman Engi-neered Technologies

Willem du Toit, the Bulk Materials Handling Mechanical Engineer who worked on the manganese project

project explains how the system works. “For the manganese mine, we chose a concrete silo, because of the storage capacity required. Over a certain tonnage storage capacity, a concrete silo is more cost effective than a steel silo.

“A weigh-flask-loading system was used for the load-out station, which consists of the silo equipped with a mass flow cone,” he says.

Learning capabilityThe Bateman load-out station incorporates a pro-

grammable logic controller (PLC) and computer controlled measurement system which has a learning capability.

The ore is fed into a weigh flask from the silo’s mass flow cone via a controlled slot. The weighed load is then passed through the profile chute into the wagons. The flow of ore out of the storage silo and weigh flask is controlled by single, long radial gates which are activated hydraulically. The design ensures that the gates close fully without spillage.

DistributionThe profile chute, which is fail-safe in the event of an electrical or hydraulic power failure, is designed to provide the load distribution accu-racy. The flask system accurately weighs each wagon’s load prior to depositing the material into the moving wagon. With a built-in ‘learn-ing capability’, the system then assesses the effect of the loaded material’s density and flow characteristics as the wagons are loaded.

The system automatically accounts for changing conditions such as particulate size, moisture and temperature. It then loads the train wagons accurately. The profile chute system ensures that axle-loading specifications are met. The load-out station’s control systems are based on client-specified hardware and Windows-based software, allowing overall supervisory and data acquisition (Scada) control of the operation.

The truck numbers are automatically validated as they are entered into the Scada system and operations are visually monitored through closed-circuit television systems.

Accuracy“Our load-out stations are custom built for each

Ensures that the gates close fully without spillage


application,” adds Willem. “The loading rates go up to 7 000 tons an hour and are designed to load to specific accuracies, meeting most countries’ statu-tory requirements. The stations have the ability to handle various rail wagons of differing capacities and types and allow for a variation in particle size and bulk density of the loaded material. The load-out stations also have the ability to handle different types of material through the same facil-ity. At the manganese mine, for example, they’re currently loading two products that differ in particle size, flow rate and bulk density.”

Not newLoad-out station design is not new to Bateman. The first stations were built back in 1972 and the demand is growing steadily. “Today, the trend is for quicker and more efficient materials handling systems,” says Albert in conclusion. “In terms of load-out stations, we’ve refined the technology to be cost effective while

catering to the very specific requirements of each individual mine.”

Philip le Roux, Bulk Materials Handling Marketing Manager, Bateman Engineered Technologies, Tel: (011) 201-2300, Email: [email protected]

COVER STORY

Catering to the very specific requirements of each individual mine


Says Man Truck and Bus (SA) CEO Thomas Hemmerich, “While the TGS WWW looks similar to the earlier TG models, underneath the body it is a completely new truck. Changes

to the engine and drivetrain have resulted in an even higher reliability factor.”

Surviving the downturnWhile the global economic crisis plunged the global truck industry into its worst crisis in years, severely punishing Man and its rivals, in Southern Africa the market has remained relatively buoyant, compared with Europe and the other parts of the world.

In 2009, Man acquired 25 +1 share of Sinotruk, the market leader in heavy truck manufacture. Thomas explains that the main reason for the

South African fleet owners can look forward to August 2010, when Man Truck and Bus (SA) will introduce the TGS WWW

truck to the South African market.

25 +1 purchase, which gives Man a veto right in major decision-making on the supervisory or advisory board, is because the company brought Man technology into this deal. As part of this deal, Man licensed its TGA truck engine, chassis and axle technologies to Sinotruk.

In 2010, various measures are being taken to ensure the company operates at a moderate profit. In 2009, Man SE divested itself of its majority shareholding in Man Ferrostaal. Since then, the company has focused on building its two major business areas, Commercial Vehicles and Power Engineering.

The Workshop business also showed an improve-ment over 2008. Thomas comments, “The economic engine is still running here in South Africa despite 2009, which has been described as the worst year for business in the past century.”

Thomas Hemmerich

Promise of Stronger 2010

Truck Sales

In January, we almost doubled our sales figures


TRUCKING

The Spare Parts business also performed well. Says Thomas, “You can build the best truck on the road but without the right backing and spare part support, it will not be able to continue to perform.

Exciting start“In 2010, the year has kicked off with truck sales that are very exciting,” says Thomas. “In January, we almost doubled our sales figures, and in terms of market share in the extra heavy segment, we increased our position from No 5 by the end of 2009 to No 2 in February 2010. This is a most exciting time with sales in January being up about 100%.” In Febru-

ary, Man Truck and Bus (SA) sold almost 200 units.”

Thomas is confident that Man Truck and Bus (SA) will increase its busi-ness in 2010 compared with 2009 by 20% to 30%.

“In 2009, we launched the MAN CLA truck, manufactured by our joint ven-ture with Man Force Trucks in India, in all the right hand drive countries in Africa. At the beginning of this year, we achieved homologation in America, in Germany, and in Egypt – those are the big markets where you can really put volume in – so sales have been excellent so far, and we expect to sell three times more than last year,” concludes Thomas.

MAN Truck & Bus South Africa, Tel.: (011) 928-6800, Fax: (011) 974-3241, Email: [email protected]

Those are the big markets where you can really put volume in


What is the reason for the name change? Johan Richards, chief executive of Nissan Diesel South Africa explains, “We believe that evolving from Nis-

san Diesel into UD Trucks provides the company with a clear vision and dedicated path going into the future.”

Into Southern AfricaIn its new guise, UD Trucks South Africa will now be embarking on a major expansion into Southern

New Name,Bigger Footprint

Africa. “As part of a new strategy adopted by the Nissan Diesel Motor Corporation in Japan, NDSA will from now on take responsibility for the company’s activities in the entire Southern African region - a total of 20 countries,” says Johan. “We strongly believe that there are a number of untapped op-portunities to provide quality products and services to transport fleets across the region, especially in countries like Nigeria and Angola.”

NDSA already has dealers in the SAF Economic Zone which includes Botswana, Lesotho, Malawi, Mozambique, Namibia, Nigeria, Zambia and Zimbabwe.

We don’t believe in merely ‘dumping’ sub-standard products and services in Africa

The new UD 300WF which was recently released to the South African market

These are exciting prospects in store for Nissan Diesel South Africa (NDSA) in 2010. NDSA is changing its name to UD

Trucks South Africa, and the company is going to be releasing

a new range of Medium Commercials this year.

TRUCKING


share, down 6.6% on 2008’s results. MCVs made up the majority of the market with 38.2% (up 3.2%), followed by the EHCVs, HCVs with 20.3% (up 0.2) and Buses with 7.6%, up by 3.2%.

“We also expect some last minute buying leading up to the World Cup Soccer in June, in order to fulfil all the logistical requirements of the event,” says Johan. “Although an event of such magnitude might lead to a drop in productivity and a loss of trading days, we expect substantial Government expendi-ture afterwards, which could have another positive effect on the truck industry,” he explains.

Vehicle financeIn addition, the availability of credit and loans is showing some signs of improvement, and a revi-sion in fleet companies’ strategies to rather replace vehicles instead of sweating their assets, could influence volumes in the year to come.

To enhance customers’ access to vehicle finance, NDSA has announced the launch of UD Financial Services as part of a joint venture with Wesbank.

“UD Financial Services will offer a range of products and services to our customers as part of our aim to provide a complete service throughout a vehicle’s lifespan, which includes sales, vehicle financing, fleet planning, training, parts and service support,” says Johan.

These vehicle financing products include instalment sales, financial and operating leases, financial rent-als as well as full maintenance agreements.

“We believe that 2010 will be a year of consoli-dation, with perhaps some marginal growth and hopefully some much-needed job creation,” Johan concludes.

Ray Schulz, Manager: Marketing & Retail Services., Tel: (012) 564-9550, Email: [email protected]

No dumping“We are in the process of establishing dealer-ships across the region who all have to adhere to the same stringent quality requirements we have here in South Africa. We don’t believe in merely ‘dumping’ sub-standard products and services in

Africa,” emphasises Johan.

The new Medium Commercial Vehicle range the company will be introducing into the country ad-heres to Euro II emis-sion regulations.

Market dynamicsLooking at the market dynamics, the EHCV segment only man-aged to claim 34% of the total market

The new UD Trucks logo

Fleet companies’ strategies to rather replace vehicles instead of sweating their assets

TRUCKING

A testing 2009The South African truck market experienced a very challenging year in 2009, recording a 45.4% crash in sales over the twelve-month period end-ing in December.

According to statistics released by the National Association of Automobile Manufacturers of South Africa (NAAMSA), the combined segments that make up the local truck market, only managed a total of 18 934 units last year, compared with the 34 659 trucks that were sold during 2008.

All the various market segments experienced a decline in sales, most notably the Extra Heavy Commercial Vehicles (EHCV) which recorded a 54.2% drop in sales to a total of 6,432 units. Sales of Medium Commercial Vehicles (MCV) declined by 40.4% to 7,229 units, sales of Heavy Commercial Vehicles were 44.8% down to 3,839 units, while Buses recorded a total of 1,434 sales - a 5.3% decline on 2008’s results.

BULK HANDLING TODAY March 2010 1�

When a splice linking an endless conveyor belt fails, the costs to the mine or industry using it can be astronomical, and fatal accidents can also occur.

A standard that gives practical guidance on how to splice parts of a conveyor belt together – and that lessens the chance of hugely expensive splice failures – is of considerable importance to the mining industry.

Important newsThe publication of SANS 486, Conveyor belting – Finger splicing of solid woven construction conveyor belting (and related standards SANS 484-1, 484-2, and SANS 485) is therefore important news for the mining industry, and may be called up in legislation.

SANS 486 specifies the require-ments for hot-vulcanised finger splicing of solid woven construction conveyor belting.

Technical CommuniqueImportant news for the mining industry: new standards

(Sans 486, 484-1, 484-2 and 485) published for splicing conveyor belting

Paul Nel, Chairman of the Working Group on Conveyor Belting that compiled these standards, comments as follows:

Why were these standards written?“The primary reason for writing national standards such as these is to have safer installations and be-cause poor conveyor belt splicing has traditionally been a significant source of downtime to the mines in South Africa. Often the incorrect equipment is used to perform the splice, or incompatible com-pounds are used, or the splice contractor simply does not know and uses incorrect temperatures, times or pressure in the curing press.

“Needless to says, this would result in an inferior splice which is at risk of breaking once tension is applied to the conveyor belt and the system starts operating. The specifications will not direct the splice company on how to do the splice, but it will give both contractor and cli-ent a very good idea of best practice, and actions that are not allowed during the splicing process.

What is the importance of these standards to the local mining indus-try? ”Using vendors who comply with the standards will result in more cost-effective instal-

CONVEYING

Give both contractor and client a very good idea of best practice

1� BULK HANDLING TODAY March 2010

lations, reducing total cost of ownership, and also very important, safer installations. Let’s consider a 300 m long incline conveyor, conveying coal at a material mass of 150 kg/m. Should it break, it is quite possible to have the belt run back down the structure, burying whatever is at the tail under 45 tonnes of coal.

Qualified splicer“Naturally, this would be a significant safety risk. In the end, we want to see a qualified splicer, trained in the intricacies of splicing, perform a high quality splice as governed by the specification.

“It is also anticipated that splicing will become a trade, similar to boilermaker or fitter. In this manner the mine will obtain peace of mind, knowing a qualified individual performed the splice,” Paul concludes.

Standards Sales at the SABS, Tel: (012) 428-6883, Fax: (012) 428-6928, Email [email protected]. The standard can also be downloaded directly from our secure standards webstore: (http://www.sabs.co.za/Business_Units/Stan-dards_SA/WebStore/WebStoreHome.aspx) on entry of a credit card number.

CONVEYING

Burying whatever is at the tail under 45 tonnes of coal


‘Rula’, derived from the Tswana word meaning ‘ruler’, stands for measurement, accuracy and fit for purpose. It’s a company that literally provides all the equipment needed

to move bulk materials. “Bulk Handling Today” speaks to managing director of Rula, Roelf Odendaal, at their premises in Honeydew near Johannesburg, about the challenges of offering such an extensive range of solutions.

“When we started off, we specialised in pneumatic conveying systems, but

over the years

One of a Kind

we gradually got involved on the mechanical side as well and now we manufacture most items in-house,” he says. “Today, we have several unique solutions that our team of design engineers have come up with over time to solve specific bulk handling problems.”

Coal feederJust one example is a coal feeder system Rula designed, built and installed recently. “It is a South African first and is typical of how we approach a project,” says Roelf. “Mill coal feeders are usually imported from overseas but we realised there was a need in the market for feeders that are purpose built for specific local conditions, so we did some thorough research before developing our own system.

“Already experienced in designing and manufactur-ing belt conveyors, chain conveying systems, bins and chutes, we weren’t fazed by the scales, pres-sure vessel design and all the other components that go into a coal feeder system,” adds Roelf. “The principle is the same as other coal feeders, but we custom-made everything in ours. Even the belt scale, which is normally bought as a unit, was designed and built by Rula. It has been installed and, after sorting out minor teething problems, we are well within the accuracy tolerances allowed for coal feeders.”

Roelf Odendaal, managing director, Rula

Not many companies in the bulk handling industry in South Africa offer full turnkey solutions in terms of

manufacturing an entire bulk handling system under one roof. Most specialise in either pneumatic or me-chanical conveying, structural fabrication or process

design and automation, so clients have to shop around all over the place to get a plant built.

CONVEYING

We weren’t fazed all the components that go into a coal feeder system


CONVEYING

Ash and cement One of the company’s specialities is ash and

cement handling systems. “Our main focus lies in the energy, cement, mining and alumina sectors, where we supply turnkey plants from concept design to commissioning,” says Roelf. “In addition to long distance pneumatic handling system for these indus-

tries, we also produce silo filling, storage and discharge systems.

“In ash handling, for example, we initially implemented German-based technologies,

but have since adapted these, transforming them into something we believe to be unique in the world and specifically oriented to South African conditions. One of our strengths is our ability to learn, assimilate, adapt and improve significantly on our equipment, processes and technology.”

Tailor madeRula has an extensive range of in-house intellectual property and designs that extends across all engi-neering disciplines. “This enables us to comfortably cope with sizeable contracts from designing original concepts to the final commissioning of the project, encompassing civil works right through to electrical, control and instrumentation,” says Roelf.

“Because we have such a thorough working expe-rience of prevailing South African conditions, our designs cater for eventualities and contingencies not necessarily specified in documents. Instead of using standard data sheets to determine the layout, we tailor-make the equipment to ensure the

dynamic and efficient flow of material.”

AccuracyThe mark of true profes-sionalism is revealed in the company’s approach to product process design and the quest for accuracy. “An extensive knowledge of bulk materials handling is necessary. You can’t just go on the internet and find information to build a bulk handling plant. It comes with many year’s experi-ence,” says Roelf.

“Take wear protection for example. It’s not just a case of reinforcing areas of high impact. The key is in pro-viding for particles to flow in a more elegant manner, so that you actually remove

Cater for eventualities and contingen-cies not necessarily specified in docu-ments


the areas of turbulence. The equipment and plant has to be designed to address all aspects of the specific particle flow analysis. To aid us in this, we make use of software design packages that include 2D as well as parametric packages dealing with 3D modelling. Finite element analysis is used to optimise design and forms an integral part of our design approach.

Quality“Quality is never an accident,” stresses Roelf. “It is always the result of high intention, sincere effort, intelligent direction and skilful execution and it rep-resents the wise choice of many alternatives. With this in mind, we are proud of our newly-awarded ISO 9001:2008 certification. This achieve-ment is based on a strong skills-set, integral to our core business.

“All employees are committed to the op-timisation and improvement of efficiency because we all share the same goal that enables us to move effortlessly and freely through the consulting, manufacturing and construction disciplines. Continuous and extensive in-house training ensures a low staff turnover and our people take immense pride in our achievements. I am also extremely proud of the individually strong employees that have supported me in carrying and building the company.” Roelf says.

The futureRoelf has big plans for the future, not just for the company, but also to boost the bulk handling industry in general. “We’re awaiting the final go-ahead for a concept I call the Rula Tecno Park,” he says in conclusion. It’s a new 35 000 square metre facility within a kilometre of our existing premises. In addition to offices, construction facilities, shops, warehousing and assembly areas, we envis-age a section dedicated to entrepreneurs.

We know from experience that there are many people who have ideas that could revolutionise business or industry, but don’t have the facilities to develop them. Our vision is to ac-commodate those who are

involved in the bulk materials handling or power industries in some way, we’ll give them access to our expertise, support services and corporate facili-ties such as accounting, marketing, manufacture and distribution, whether they’re manufacturing components for us or to market themselves, as long as it is for the bulk handling industry.”

Roelf Odendaal, Rula, Tel: (011) 795-1040, Email: [email protected], Website: www.rula.co.za

CONVEYING

Providing for particles to flow in a

more elegant manner


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as well as training in the correct use of the Mato system is provided for the mine’s team respon-sible for the conveyor belt advances. This free service ensures that the strength, integrity and durability of the system is not compromised dur-ing installation.”

Only one of its typeThe complete conveyor belt fastening system combines a lacer, cutter, skiver, lacing pins, wavemaster and clips to produce a cost-effective, durable alternative to hot and cold splicing. The conveyor belt fastening clips are manufactured

at the South African ISO 9001:2000 accredited facility using high quality technology on the only machine of its type in Africa. “Best practice quality systems ensure the highest integrity of the product with additional quality checks done on random samples by our German principals, all of which enables us to verify the quality through traceable batch numbers,” adds Trevor.

This conveyor belt fastening system has attracted a lot of repeat business for the company, with the primary benefit being quick installation – half an hour to three quarters of an hour on a 1 200mm wide PVC belt, includ-ing clamping and cutting. Following this, the average life of a mechanical spliced belt is in the region of six to twelve months depending on condi-tions, yet some customers have splices that have achieved a lifespan of up to three years

Fast fastenersThe strength of the clip joint can be traced to its engineering design whereby a minimum pressure of 3 tons is exerted by the lacer on each clip and staple as it is inserted in the conveyor, pressing the plates into the surface of the belt and pushing the staples through the carcass and two-stage bending.

The pressure causes an interference fit, ensuring that the fasteners have considerable pullout strength and resistance to the splice being ripped out of the belt.

Using high quality technology on the only machine of its type in Africa

“A major advantage when using our belt lac-ing systems is that this locally-manufactured product is available ex-stock,” Trevor Jeffries, manager at Mato Products, says.

“In addition, a high level of technical assistance

Just 30 Minutes

The Mato belt lacing system is available ex-stock from Mato Products

CONVEYING

A broken conveyor belt is a safety hazard and a major con-tributor to lost production. With the Mato high quality belt fastening system, a conveyor belt can be joined or repaired

within just 30 minutes, a significant saving in downtime when compared with hot or cold splicing.


CONVEYING

A total of four fastener sizes cover all belt require-ments needed by the mining industry and all have a low profile for better scraper interaction, as well as less wear and reduced noise on pulleys and idlers.

Half an hour to three quarters of an hour on a 1 200mm wide PVC belt, including clamping and cutting

The strength of the clip joint can be traced to its engineering design

Two typesTwo specific types of belt lacing systems are pro-duced by Mato in South Africa – the U30 Series for conveyor belts with a tensile strength greater than 1 200 kN and the S30 Series for conveyor belts with a tensile strength less than 1 200 kN. The U and S fasteners are manufactured in 200mm strips and in standard belt widths of 1 050mm, 1 200mm, 1 350mm and 1 500mm.

The U30 (Ultimate System Series) has stainless steel plate and spring steel staple material, resulting in the strongest possible connection of the splice and longest service life. The S30, on the other hand, is recommended for medium strength belts in coal mining applications, quarries, cement and steel plants and general industry.

Important componentsA number of accessories have been developed to supplement the belt fastening system, including a novel belt cleaning system and plate fasteners.

Research and development led to the manufacture of the belt skiver in South Africa. This is an important component in the fastening of nitrile covered PVC and rubber conveyor belts, and is now exported worldwide. A wavemaster system is also available to counteract the wave effect when the clips are used on rubber conveyors belts.

“These systems have a proven track record,” Trevor concludes proudly. “And have been approved by, among others, the Sasol and BHP Billiton stan-dardisation committees due to their durability, competitive price and ease of installation.

Bernadette Wilson, Multotec Group, Tel: (011) 923-6193, Email: [email protected], www.multotec.com


Any standard oil-operated coupling can be easily modified to run with water

The new closed loop TPKL model can be controlled during any starting process to allow inspection speed applications as well as reduced speed applications under full

load. Globally there are hundreds of successful installations and companies such as USA based BHP Billiton have standardised the product for the group’s conveyor systems.

Hans reports that there are four local reference sites with installed units ranging in sizes from 1 X 562TPKL-E, 2 X 650DTPKL-E and 10 X 650TPKL-E. “Another sixteen 650TPKL-E units will be commissioned soon with a further order for twenty 650TPKL-R’s currently being negotiated. All the installed units are running well with no reported failures. The new Voith Fill Controlled Coupling type TPKL is be-

coming increasingly popular in longer overland conveyor installations”, he adds.

Eliminating slipWhile using the same hydrodynam-ic process as the TPKL, the TPKL-syn coupling will at full speed, clutch the input to the output, eliminating slip (speed loss), normally associated with fluid coupling applications.

This feature offers increased efficien-cy to applications with high power consumption such as mills or kilns and with a power correction on the motor optimises the installation’s

CONVEYING

Setting the BenchmarkAccording to Voith Manager – Engineering Services, Hans Voshol, the proven technology of their fluid cou-

plings keeps abreast of modern demands and remains the most cost-effective installed product in drive sys-tems for the protection of the drive train as well as the driven machine. Although lucratively applied in various controlled power sharing applications, these open loop systems are mainly installed to slowly accelerate belt conveyor systems to full speed. The couplings are also used as clutching devices to stop and restart the con-

veyor without shutting down the main motor.

Voith fill controlled couplings at Saldanha Port

Hans Voshol, Voith Manager, Engineering Services


Without disturbing the drive alignment which saves time as the need for alignment before restarting operation is eliminated

efficiency and which translates to dramatically reduced operating costs.

These cost savings offset against the cost of the TPKL-syn couplings, create a long-term saving benefit for the customer. Two units manufactured for the US market were tested in December 2002 and have since been operating successfully.

Significant specificationVoith fluid couplings were adjusted to ensure ad-herence to Atex standards and specifications, prior to Europe’s development of an Atex standard for equipment manufactured for potentially explosive, dangerous applications. The specification is sig-nificant in that it provides proof that the surface temperature will never exceed a certain value during operation.

Hans elaborates, “The specification therefore presents various levels of intensity for a range of applications of values and standards. Atex speci-

CONVEYING

Voith TurboSyn coupling

fications require fusible plugs located closer to the operating medium to ensure that temperatures are accurately moni-tored and that the plug is immediately activated when the temperature rises excessively.

“The new BTM unit features an improved non-contacting thermal switch to provide constant temperature monitoring with feedback to the control PLC.”

Water as an operating mediumVoith has also developed a standard coupling range that uses water as an operating medium which is fully com-pliant with ISO 1400I environmental specifications so that when a coupling actuates a fusible plug, only potable water leaks into the soil keeping the environment free of any oil contamina-tion. Water also increases the coupling’s torque capability as water density is higher than that of the usually speci-fied grade 32 hydraulic oil.

“With environmental issues high on the global agenda for all industry, our water operated couplings are rapidly becoming an increasingly popular, cost effective, environmentally friendly choice for diverse applications. It is also important to note that we have engineered the products over the past few years so that any standard oil-operated coupling can be easily modified to run with water.

Although conditions apply, cou-plings from 1985 onwards can be modified as they already contain the correct parts for the sealed bearing chamber, comments Hans.

Single drive conveyorsThe constant filled T-syn coupling is capable of locking the driving with the driven side at full speed to operate without slip, thus no losses (power saving). The coupling (Type T- syn) was tested for two years in one of the six test facilities at Voith Crailsheim, Germany, and also field tested on a mill application in that country before being marketed. T-syn couplings are now operating successfully in various applications worldwide and VTZA is cur-rently negotiating the upgrading of mill drives in Botswana converting existing soft starter to a more efficient T-syn coupling.

The couplings provide the full hydrodynamic starting process and lock-up at full speed. Should speed reduction occur for any reason, eg, a voltage drop on a mine, caused when big motors are started directly on line, the coupling will declutch at ap-proximately 5% under speed, re-accelerate the driven machine hydrodynamically up to full speed and lock-up again for operation without any speed


or torque loss. “There is however one drawback to this coupling (T-syn),” says Hans. “It can only be used on single applications such as fans, pumps, crushers, mills and on single drive conveyors”.

Buffer changesVarious proven connecting technologies are avail-able to support the fluid couplings on the motor and to ensure that it is possible to change the coupling radially without disturbing the drive alignment which saves time as the need for alignment before restarting operation is eliminated.

Voith BR (Buffer Roller) couplings installed with these connecting methods are ideal to ensure buffer changes in situ which radically reduce maintenance and downtime. The company has also designed and engineered cradle supports for larger size couplings to eliminate the overhung weight effect on the motor shaft and bearings.

The coupling now becomes self- supported and can be exchanged as a unit by disconnecting the flex-ible connecting couplings and radially removing and installing the coupling and cradle minimising the alignment required.

Worldwide patents“Voith adds approximately 400 new patents per an-num to the more than 7 000 worldwide patents we already hold and we always ensure that our product range is compliant with the latest requirements of international specifications. We are able to offer our customers service and maintenance contracts where outsourcing of these services is needed or where the OEM’s expertise would better serve the customer’s operation,” concludes Hans.

Hans Voshol, Voith Turbo South Africa, Tel: 011 418 4000 / Fax: 011 418 4080, Email: [email protected] Roy Webster, Tel: (011) 418-4036 (direct)/(011) 418-4000 / Fax: 011 418 4080, Email: [email protected]

CONVEYING

2010 Lifting Guide“Bulk Handling Today”, a magazine endorsed by LEESA (Lifting Equipment Engineering of SA), will be publishing the first ever Lifting Guide in May 2010. The guide will be distributed together with the May 2010 edition of “Bulk Handling Today” and from our stand at Electra Mining in October 2010.

The guide will advise industry users on how to choose, use and maintain lifting equipment that is ‘tailor-made’ for their specific needs and applications.

Generic type of cranes and their specifications are discussed in detail.

Contact: Surita Marx on Tel: (011) 781-1401, Fax: (011) 781-1403,

Email: [email protected]

2� BULK HANDLING TODAY March 201030 Supply Chain Today Jan 2010

This prestigious award recognises people, projects and products

that have gone above and beyond the call of duty to

enhance the environment in which they operate.

The inaugural awards in 2009 enjoyed a wonderful response

from the supply chain community and everything is on track to make this year’s event one of the indus-try’s most prestigious accolades.

Come and see who walks away with the coveted trophies and

enter your product or project for this year’s event.

Entries for this year’s event close in June and the awards ceremony is being planned for 26 August 2010.

GreenSupplyChainAwards

Contact: Catherine Larkin on

Tel: (011) 789-7327/787-9127,

Cell: 083 300 0331, Fax: (011) 787-7865


Are You Doing Your Bit?


This waste steel material ends up in the final processing stage, contaminating the final product. But, more importantly, tramp iron causes a substantial amount of damage along

the way: wearing away the rubber-lined cyclones, pumps, and pipelines… and this will occur many hundreds of times as it gets re-circulated through the mill.

Fortunately, there is a simple solution to this prob-lem. “Bulk Handling Today” speaks to Jacques Henning, director of Eriez Magnetics, a company that designs and manufactures mill trunnion magnet systems for the removal of errant magnetic waste products from milling circuits.

“We have supplied four such permanent mill magnetic

Mill Magnetic SystemsOne of the greatest enemies of any milling operation comes from the system itself – the media, such as steel balls, used to grind the mined ore. While it’s grinding down the ore, the balls are wearing itself away at the

same time. Eventually worn balls pass out of the system through the cyclone overflow.

systems for African operations, and many more for international companies. But Eriez wasn’t always this big,” he says.

Could create a spark“We started off as a family business supplying permanent magnets to facilities in the USA that grind wheat and grain. The magnets remove any possible contaminants from the final product as well as any other debris such as bolts or nuts, which if they were to impinge on any steelwork, could create a spark. With the amount of dust involved in these operations, this could create a huge explosion.

“Insurance companies insisted that these facilities be fitted with magnets, so our business grew, and as it grew, the applications became more apparent to mineral processors.”

A system under construction in the Eriez workshop

WEIGHING

In an industry that may use up to three to five tonnes of grinding media each day, the implications are clear


A magnetics system from Eriez

A clear ideaEriez has also seen local demand for permanent magnets grow, although Jacques believes the company still has a long way to go.

“We have supplied systems to gold mines in Mali and to the platinum industry. Randgold Resources are standardising on these types of installations on all their mines such as Morila Gold Mine, Loulo and Tongon-Mali (West Africa), replacing the trommel screens. But South African engineers are catching on. They go overseas to conventions and mining operations, see these permanent magnets in operation, and gain a clear idea from practical examples on how they could benefit at home.”

How it worksJacques describes a mill permanent magnetic system: “Envisage this: at the discharge end of the mill we’ve installed a system of permanent magnets. As the worn ball is discharged, making its

way to the pump sump, it becomes attracted to the magnetic field. It adheres to the inside of the mill trunnion as it is conveyed to the edge of the magnet, where it is released at the point where the magnetic field ends. The worn ball then drops into a chute to be fed away from the main slurry stream.”

The benefits are substantial. According to Jacques, in a case study performed by an independent body, as much as 40% of the grinding material was re-moved as small waste iron particles. Average power consumption dropped from 7600 kW to 6800 kW, and the time required to grind the material to a size where it could pass onto the next stage of the processing system, was improved by 5%.

Slight advantageIn an industry that may use up to three to five tonnes of grinding media each day, the implications are clear. “Improved grinding efficiency, higher throughput, lower power consumption and reduced maintenance are clear benefits of such a system. Mining and mineral processing is becoming more competitive, and the company which gains a slight advantage wins,” asserts Jacques.

He points out, however, that such a system is not applicable to everyone. “Some mines use the very ore they’re mining as the grinding media itself. They may also be mining magnetic minerals, in which case you don’t want our magnets to remove anything. But any mill that uses steel balls as a grinding media, such as ball-mills and semi-au-togenous-mills, will benefit by using a trunnion magnet system.

UpfrontThis magnet system is also best suited for new

WEIGHING

It’s a lot simpler to work from the initial design stage of the mill


Jacques Henning, director at Eriez Magnetics

WEIGHING

We need to find out what size they’re keen on removing as a first step

mines and projects although certain ex-isting operations may be able to in-stall the system. ”While it can be retrofitted in certain cases, it’s a lot sim-pler to work from the initial design stage of the mill. We look at the size of balls they may use, what magnetic strength is required to pick up the material and the force, volume and specific gravity of slurry coming out of the mill. From there, we come up with a design and a quotation.

“Ultimately, it depends on what the customer wants. We can overkill and make a very powerful magnet capable of picking up anything including full-size steel balls, but the price escalates. So we need to find out what size they’re keen on removing as a first step.”

The GoodsThe systems are manufactured wholly in South Africa including cut-ting, sizing and magnetising of the magnetic material. Eriez supplies both rare-earth and traditional barium-ferrite permanent magnets. The only overseas connection is that the magnetic material is imported from Eriez China. “Their quality is excellent,” says Jacques, “We used to import from the USA, but they’re no longer as price-competitive

as they once were. In today’s market, most magnetic material comes from China. We use a variety of grades and thicknesses to meet the specific needs of each application.”

Size is also not a problem. “We provide different sized systems for different mills: anything from a one-metre diameter discharge to one as large as 3,5 metres,” explains Jacques. Eriez’s magnet systems have also found a home in many mining house research laboratories at corporations such as Anglo American and BHP Billiton.

Just askAlthough this is hardly a new technology, Jacques states that most engineers are aware of the system, but may not think it will work for their projects. “Ask us,” encourages Jacques. “Is it feasible? Has it been done in similar applications? We’re part of an international organisation, with affiliates and projects all over the world. All the information is available, so we’ll be able tell the client if our technology is applicable to their needs. And if we don’t know, we’ll find out.”

Jacques Henning, Eriez Magnetics, Tel: (011) 444-9160, Fax: (011) 444-9166, Email: [email protected]


Suffers little wear and tear, and retains accuracy for long periods of time

However, there is now a belt weigher on the market that operates without load cells, obviating these problems and deliver-ing a precise, consistent accuracy that

requires very little maintenance. This is according to Ian Fraser, managing director of Tshwane-based, Rand Technical Services.

Says Ian, “Procon belt weighers are used through-out the world in countries such as China, Sweden, United Kingdom, Scotland and the United States. Suitable for the toughest, harshest environments, they function throughout a broad industry spec-trum- particularly in mining, quarrying, power generation, pharmaceutical, chemical and general engineering. Materials weighed range from coal to chemicals, ore, crushed stone, cement and even food processing.”

ResonatorHe continues, “At the heart of the Inflo Resometric belt weigher is the Digital Resometric Force Trans-

Precise and ReliableMost industries involved with bulk materials are familiar with the frustrations of continuous belt weighing. Load cell support structures become clogged with product and require regular cleaning, and accuracy drift as a result of load pounding on

the load cells necessitates frequent calibration.

ducer, or resonator, which provides high measure-ment performance levels over a long working life. With no moving parts, the fine wire of the resonator is tuned to the standard, zero-weight level of the applied force from the weigh carriage itself.

This resonant frequency then changes in proportion to the weight of the load passing over the carriage rollers. The change in frequency is measured and

Ian Fraser, managing director of Tshwane-based, Rand Technical Services

WEIGHING

�0 BULK HANDLING TODAY March 2010

carriage has been installed and aligned, it will only be sensitive to vertical forces.

Changing anglesInflo belt weighers have also been used extensively on mobile equipment such as ship loaders and stackers or reclaimers. Despite the belt weighers being continually subjected to changing angles of operation, no significant cosine weighing errors occur. Procon’s proprietary Astatic Mass Zero Compensation system automatically compensates for the changing angles, ensuing accurate weighing of the suspended weigh carriage mass.

The Inflo belt weigher meets international weights and measures requirements, and is certified ac-cording to OIML recommendation R50 (continuous totalising automatic weighing instruments.)

Ian concludes, “This technology is relatively new to the local market, but it is well-known, and well-proven internationally, under a broad range of operating and climatic conditions. Saving time, downtime, resources and maximising profit for our customers, the belt weighers allow highly ac-curate commercial product transfer and supply for anything from power station coal stocks and iron ore, to agricultural produce such as wheat or sugar. The applications for this innovative technology are almost endless.”

Richard Cooper, Rand Technical Services, Tel: (012) 993-9620, Fax: (012) 993-9636, Email: [email protected], [email protected]/www.rtsafrica.co.za

processed by the electronics and, when combined with the belt travel speed (as measured by a ta-chometer) provides an accurate weight reading per unit time.”

Minimal stressAs there is minimal physical stress on the reso-nating wire itself, it suffers little wear and tear, and retains accuracy for long periods of time. Nevertheless, roll-over calibration weights allow for easy, periodic calibration checks. Normally parked across the conveyor stringers, these dead weights are easily and simply lowered by a cam mechanism whenever calibration is required, and provide a good indication of the measurement consistency achieved.

Interference from poor belt tracking, or badly aligned loads, is prevented by the lateral chains fitted between the weigh carriage and the rigid conveyor. These chains ensure that, once the weigh

Despite the belt weighers being continually subjected to changing angles of operation, no significant

cosine weighing errors occur

The new EP50 beltweigher controller for use in new or upgrade installations

WEIGHING

Belt weighers are fitted on this stacker/reclaimer working at Tianjin Port, China

BULK HANDLING TODAY March 2010 �1

ENDORSING BODY

The meeting was chaired by Phil Staples with Graham Downing answering general questions, while Roy Barbour handled the financial report of the

institute. Last year’s annual Golf Day again turned out to be a financial success that allows the institute to present a charity of choice with a donation every year and this event is set to continue in the future.

Invitation to joinGraham stressed the impor-tance of recruiting more mem-bers and explained some of the actions the institute is taking to encourage more people in the industry to join.

One strategy is to write to ev-eryone in the industry about the courses the institute is offering. Although the first course is elementary, it’s aimed at junior staff in companies involved in materials handling. Graham reported that just this year more than ten candidates have already submitted their assign-ments to the institute. The sec-ond course is near completion and members in the audience volunteered their expertise to assist in either revising study material or helping out with the marking of assignments. This

SAIMH AGMAGM’s are often long-winded affairs, but the South African Institute of Ma-terial Handling’s AGM, held last month

at the ERPM Golf Club in Boksburg, was dealt with swiftly so that every-

one could settle back and listen to the usual guest speaker presenting an ap-

propriate materials handling topic.

Company Affiliate Members

Company RepresentBateman Engineered Technologies Ltd Mr R PieterseBrelko Conveyor Products (Pty) Ltd Mr P EllisCKIT Conveyor Engineers (Pty) Ltd Messrs P Staples/A WoollenCPM Engineering Mr Doug FennerCT Systems cc Mr A.SingerConveyor Watch (Pty) Ltd Mr A SurteesDavid Brown Gear Industries (Pty) Ltd Mr D WhitfordDeebar Mining & Industrial Supplies Mr D SoekoeELB Engineering Services (Pty) Ltd Dr S J MeijersEngicon Systems (Pty) Ltd Mr Dave MorganFacet Engineering cc Mr C.D. FairweatherGoba Moahloli Keeve Steyn Mr T GobaGroup Line Projects (Pty) Ltd Mr D KellyHansen Transmissions SA (Pty) Ltd Mr C E DicksIllustech Mr Rick Du ToitKetapele Flexible Manufacturing cc Mr 0 L LeburuMacsteel VRN Mr Ross WylieMartin Engineering Mr J HicklingMelco Conveyor Equipment Mr Derek CohenOsborn Engineered Products(Pty)Ltd Ms C FallowsP D Engineering Services cc Mr Kevin ThomasPDNA M&I (PTY) LTD Mr Devan GovenderQuadrant PHS Mr H PretoriusRenold Crofts (Pty) Ltd Mr N PeraSandvik Materials Handling Africa Mr A PainScrew Conveyors & Material Handling Mr M OverySecrivest (Pty) Ltd Ms Ann DixSEW Eurodrive Mr U RoosShatterprufe (Pty) Ltd Mr Q Van MeyrenSpar Western Cape Mr S EngelbrechtSuper Dock Systems Mr C Van ZylUnitek Engineering Mr Bruce Wilson

was welcomed by the committee.

Yet another termAfter the formalities, and the current com-mittee remaining in place for yet another term, Phil Staples and Luigi Liccardo of Ckit Conveyor Engineers presented a paper on: ‘The procedure for module, gantry and equipment selection for overland conveyors’. Phil’s colourful presentation showed several installations of elevated conveyor system and,

in some instances, his theories drew interesting comments and questions from the audience.

Graham Downey, 082 372 5150

BULK HANDLING TODAY March 2010 ��

Market Forum

Good economic sense“Using metal spraying technology instead of purchasing a new engine block can result in significant cost savings,” Andrew Yorke of Metric Automotive Engineering says. “This innovative technology costs one tenth of the price of a new engine block, which should be music to any plant owner’s ears.”

Andrew explains that as the pioneer of reclaiming engine blocks in South Africa, Germiston-based Metric Automo-tive Engineering has successfully brought numerous diesel engine blocks back to OEM specifications. “We adopted metal deposition technology some ten years ago and have had great successes with this technique, which originated in the United States.

“Engine blocks have a finite lifespan, with fretting invariably occurring between the block face and the cylinder head over time. It is possible to skim a block once or twice when reconditioning an engine, but the stage is always reached

An engine block on which metal deposition technology has been used to bring it back to OEM specifications

when the block must be replaced,” he continues.

“Engines up to the size of Cummins KT50C, Detroit Diesel 16V149, Komatsu 6170 and Cat 3516, can and have been accommodated,” he adds.

Andrew says that data collected by the company shows that, depending on the condition of the old block, savings of up to 90% can be realised on a new block. Because the imported boring and mill-ing machines used by the company are computer controlled, accurate results are achieved that conform to OEM standards, and the time taken for set up and the actual overhaul costs are considerably reduced.

Andrew Yorke. Metric Automotive Engineering (Pty) Ltd, Tel (011) 873-2350

Fast and efficient screeningRotex Screeners feature a unique gyratory-reciprocating mo-tion and highly efficient mesh cleaning system making it ideal

Level 5 BBBEE accreditation Humboldt Wedag, one of the leading sup-pliers of materials processing technology to the mining and industrial minerals industries in southern Africa, recently achieved a BBBEE Level 5 accredita-tion rating.

Johannes Kottmann, managing director of Humboldt Wedag, says: “We are now aiming to achieve a BBBEE contributor level 4 rating to give our cutomers 100% procurement recognition as part of the medium term strategy.”

One of the next initiatives for the company will be to significantly increase skills

development. “BBBEE is a dynamic process and attention will obviously be given to all elements within the framework,” Johannes notes. “Preferential procurement will also be a major focus on the upcoming Assmang Khumani Expansion Project contract for which we have recently been awarded a contract for the jigs and ancillary equipment.”

Johannes Kottmann, Khd Humboldt Wedag International, Tel: (011) 397-4660, Website: www.humboldtwedag.co.za

�� BULK HANDLING TODAY March 2010 Advanced Materials Today September 2007 39

AMT Sept 07 zin.indd 39 2007/09/11 10:28:49 AM


Market ForumRugged lightweight ramps A range of lightweight aluminium loading ramps for the safe loading and unload-ing of wheeled, rubber and steel track vehicles is now available from plant equipment specialist, Bobcat Equipment South Africa.

Manufactured from exceptionally high-strength alloys by Italian company, CLM, the meticulous design of the ramps in-corporates double-T profiles which keep the weight to a minimum and further add to the ramps’ unrivalled strength; a very small surface guarantees the highest bending strength with the least weight. In addition, the rugged structure and thick beams easily withstand dents and knocks, eliminating the risk of cracks or splits in the ramp structure.

Ramps for wheeled and rubber track vehicles, available in lengths up to 5 metres, handle load capacities from 200kg to 14 000kg while ramps for steel tracks are designed to support weights ranging from 2 500 kg to 28 600kg. Ramps are supplied with and without edges and different connec-tions are also available.

The ramps undergo rigorous testing, all parts are certified and all CLM manufactured products comply with the highest internationally adopted quality standards.

Deryck Jorda, Bobcat Equipment SA (Pty) Ltd, Tel: (011) 908-2377 / (01)1 389-4400, Email: [email protected], Website: www.bob-catsa.co.za

for use for a wide range of material screening applications throughout many industries.

The screeners - available locally from materials handling specialists Lockers Engineers - provide rapid distribution, stratification and separation of particles through the gyratory-reciprocating motion of the near horizontal screen surface.

Designed to maintain capacity, the positive screen mesh system contains bouncing balls to keep screen openings clear and aid particle stratification.

The gyratory motion begins with a horizontal circular motion at the feed end that immediately spreads the material across the width of the screen, maximising use. The circular motion gradually diminishes along the length of the machines to an elliptical path and finally to a near straight-line motion at the discharge end.

This motion allows the machines to process ma-terial at a high capacity and improves screening performance with near-size material. There is no vertical component to this motion, thus keeping the material in constant contact with the screen surface.

The corrosion-resistant design and construction withstands even abrasive applications including mined salt, water softener pellets and edible salt.

Johan Breet, Lockers En-gineers SA (Pty) Ltd, Tel: (011) 769-1420, Fax: (011) 762-4719

Advanced Materials Today September 2007 39

AMT Sept 07 zin.indd 39 2007/09/11 10:28:49 AM

�� BULK HANDLING TODAY March 2010

Market ForumAccording to Jason Owen, Manager, Conveyor Belting Division, Truco, the company has an established relationship with Protea Conveyors. “Protea was contracted to supply the complete conveyor system, includ-ing structure, motors, gearboxes and pulleys, as well as complete the installation.”

Truco supplied almost 1 500 metres of textile reinforced rubber belting for the conveyor which will be transporting gold ore. The belt carcass is manufactured from nylon and polyester, while the belting’s top and bottom covers are made from a combination of natural and SBR rubber. This ensures that the belting is highly flexible and abrasion and wear resistant, while providing excellent tensile strength and low elongation.

In addition, Truco has been awarded the contract to supply belting spares to the project.

Jason Owen – Manager Conveyor Belting Division, Truco, Tel: (011) 762 5291, Email: [email protected]

Under construction: The Essakane Project in Burkina Faso

Conveyor belting orderTransvaal Rubber Company (Truco) has supplied conveyor belting to the value of R1.2 million to Protea Conveyors for use in a new Burkina Faso goldmine.


Market Forum

Peace of mindAn innovative package deal provided through sole southern African Caterpillar distributor, Barloworld Equipment, called Cat Certified Used (CCU), offers the market an affordable buying solution on Cat equipment.

“Barloworld Equipment is the only organisation in the market to offer this Caterpillar solution, which can be compared with the ‘premium used’ resale packages provided by the automotive industry,” explains Sean Walsh, general manager: rental and used, Barloworld Equipment.

“The CCU solution is exclusively available through Barloworld Equipment’s South African dealer network, enabling contrac-tors to buy a Cat at an affordable price, plus the associated benefits of a world-leading brand with an exceptional re-sale

Cat’s latest generation 428E features a load-sensing, closed centre hydraulic system that closely matches power and flow to the demand needed by the implements, which in turn saves on fuel consumed

value. Additionally, all CCU units have low operating hours relative to their respective machine class,” Sean continues.

All CCU units sold into the market come with a 12 month warranty, with the bulk of these machines sourced from Barloworld Equipment’s Cat Rental Store. Each unit therefore already has a detailed and cared for operational history, and only one previ-ous owner.

All machines have been inspected and serviced by Barloworld Equipment’s highly skilled technicians. Each machine undergoes a rigorous evaluation, covering fundamental areas that include the engine dynamics and condition monitoring, hydraulics, the tyres or undercarriage, transmissions and drivetrains, and electrical systems.

Sean Walsh, General Manager: Rental & Used, Tel: (011) 929-0000, Email: [email protected]

Eductor systemA new bulk bag weigh batch eductor system loosens bulk solid material that has solidified during storage and shipment, discharges the material by weight, and blends it into a liquid stream.

The skid-mounted system incorporates two bulk bag unloading frames, each with an integral bulk bag conditioner comprising a hydraulic pump and two rams with contoured end plates that press opposing sides of bulk bags. The unloaders’ cantilevered hoists and motorised trolleys allow conditioning of bulk bags at various heights, as well as loading and unloading of bags without the need for a forklift. Safety interlocks disal-low operation of the conditioner when the unloaders’ doors are open.

Integral configuration of the conditioner eliminates the time, labour and equipment needed for separate loading of bulk bags into a stand-alone conditioner, while consuming significantly less floor space than two separate pieces of equipment and reducing capital cost.

The unloaders also feature a Spout-Lock clamp ring that forms a high-integrity seal between the clean side of the bag spout and the clean side of the equipment, while a Tele-Tube telescoping tube maintains constant downward pressure on the clamp ring and bag spout, elongating the bag as it empties to promote complete discharge.

Immediately above the clamp ring is a Power-Cincher flow control valve employing a series of curved, articulated rods

�� BULK HANDLING TODAY March 2010

The Bulk bag weigh batch eductor system features dual bulk bag unloaders, each with integral bulk bag conditioners and flexible screw conveyors feeding a central eductor that feeds solid mate-rial into a liquid stream

that cinch the bag spout concentrically, allowing dust-free retying and removal of partially-empty bags.

Flexicon Africa (Pty) Ltd., PO Box 10450, Linton Grange, Port Elizabeth 6015, South Africa, +27 (0)41 453 1871, [email protected], www.flexicon.co.za

Afzelia 28AST Inside Front CoverBarpro 26Bateman Outside Front CoverBearings International Outside Back CoverBrelko 10Chorus Call 14Continental Crushing Inside Back CoverDymot 12Engineer Placement 23EPNS 7Feel at Home 38Green Supply Chain 24ILS 8Imperial Bank 32Innov-X 36JIP 20Metso 27SAID 34Sapics 18Wilec Bearings 14

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