PROJECT REPORT

ON

PROPOSED COAL WASHING PLANT

AT

KORBA AREA

TO BE SET UP BY

PHIL MINERAL BENEFICATION & ENERGY PVT. LTD., BILASPUR

PREPARED BY : A. MUKHERJEE & ASSOCIATES,

P13 & P14, Kasba Industrial Estate,Phase - III, Kolkata - 700 107

Phone - (033) 24426259, Tele-Fax - (033) 24422583,E-mail No. : mmhcal@dataone.in

CHAPTER - I

INTRODUCTION

Coal is the most abundant fossil fuel. India is blessed with huge coal reserve, nearly 7% of total coal in the world. 85% of this reserve is non coking coal, which caters to the need of power, cement and sponge iron plants. However, most of these reserves are of very low grade coal and the reserves of good quality coal is fast depleting. On the other hand, the demand for coal is increasing due to higher demand of steel, power and cement. The problem of inferior coal is further aggravated due to extensive mechanised mining. As a result, the users of coal is not getting desired quality necessitating beneficiation of coal for use in cement plant, sponge iron kiln, power plant etc.

M/s. Phil Minerals Benefication & Energy Pvt. Ltd., who are a reputed group trading Coal for Power, Cement and sponge iron industries, intends to set up a Coal Washery at Korba Area to cater to the requirements of their various customers. The washery shall be of 5.0 MTPA capacity and shall beneficiate F Grade coal of around 45% ash of Korba area.

The coal washery shall be a two stage, three product Heavy Media Cyclone washery separating washed coal of Ash around 30 to 32% depending upon the needs for end users, namely, sponge iron, power and cement industries. The middlings alongwith dewatered coal fines of GCV around 2500 Kcal per Kg shall be used as fuels in FBC power plant. The rejects with no useful heat value shall be dumped in nearby low lying areas.

The Coal Washery shall be environment friendly with close circuit water system comprising classifying cyclone, high frequency screen, thickener, multi roll belt press filter. The washery shall be State-Of-The-Art with modern instrumentation and PLC Controls.

CHAPTER – II

PROJECT AT A GLANCE

1) Name of the Company : M/S. Phil Minerals Benefication & Energy Pvt. Ltd.

2) Address : B-11, Sai Plaza, Opp. CMD College,Link Road, Bilaspur (C. G.) – 495 001.

3) Proposed Location of the : Plant

4) Installed Capacity : 5.0 Million Tonnes per Annum raw coal throughput. (1000TPH)

5) Power requirement : 5 MVA.6) Power consumption : Approx. 4 units per tonne of raw coal

throughput.

7) Water requirement : 50 m3 per hour.

8) Estimated cost of the project :Rs. Lakhs

i) Land and building : ----ii) Design & Engineering : iii) Civil & Structural construction : 275.00iv) Plant & Machinery : 507.00 v) Electrical & Automation : 80.00

9) Project Schedule : 18 Months.

CHAPTER – III

NEED FOR COAL WASHERY

Coal India Limited and its subsidiaries are the only domestic producers and suppliers of coal. The annual requirement of non-coking coal for various industrial sectors like power, steel and cement is increasing day by day. The reserves of lower ash good coal is depleting and hence in order to fulfil industry’s demand, huge reserve of inferior grade of coal is being mined. The problem is further aggravated due to mechanised and open cast mining of coal. Due to higher demand, selective mining is not possible. The average ash of coal now being supplied by CIL is around 45to 50%. Also, the quality varies to a great extent since the supplies are coming from various mines and coal faces.

In order to maintain a consistent quality of coal as per the requirements of various customers for use in sponge iron kilns, cement kilns & power plants at lower ash levels between 30 to 32%, it will be necessary to set up a coal washing plant. Raw Coal of around 45% ash shall be washed in the proposed coal washing plant to produce washed coal at around 30 to 32% ash. The primary discards shall be subjected to secondary washing to produce middling at 55 to 60% ash and rejects at around 85% ash.

Advantages of using washed coal.

1. Supply of consistent quality coal can be ensured thereby avoiding frequent adjustments in input to kiln / boiler and minimising operators’ error.

2. Increase in effective volumetric capacity of kiln by reducing coal input using better grade coal thereby increasing plant productivity.

3. Better control on quality of end products.4. Higher Thermal efficiency of boiler and higher steam rate.5. Less wear and tear of the coal grinding mills.6. Lower capital and operating cost for installing smaller ESP.

The capacity of the Coal Washing Plant shall be 5.00 Million Tonnes Per Annum of raw coal throughput having the following parameters :

Capacity : 1000 TPH.

No. of operating days in a year : 330 days.

No. of operating hours in a day : 18 hours (three shift operation including daily short maintenance and start stop).

Plant utilisation : 85%.

Annual throughput : 1000 X 18 X 330 X 0.85= 5049000 tonnes.Say 5.00 million tonnes.

As already mentioned, the washing plant shall be a two stage separation (three products) unit having following outputs.

Ash Yield

Clean Coal Around 30% 55%Middling Around 58% 37 – 35 Rejects Above 85% 8 – 10%

All the yield figures indicated are tentative and are meant for estimation purposes only. Actual yield figures vis-à-vis can be predicted only after the washability data are available.

CHAPTER – IV

INFRASTRUCTURE

For establishment and successful operation of a coal washing plant it is imperative to ensure availability of the following infrastructure :

Availability of principal raw materials, viz., Raw Coal, and its proximity to the plant to reduce cost of transportation.

Road / Rail head connection so that raw materials and products can be easily and economically transported.

Availability of water.

Permanent and reliable source of power.

Land for Plant installation, storing of products and disposal of rejects.

Since the raw material shall be required in bulk quantities, the location of the plant shall be nearest to the mines to save in transportation cost and to ensure consistent supply of raw coal.

Necessary road connection is already available between the plant site and nearby coal mines.

Power supply can be easily met from the captive power plant / existing grid.

Sufficient land required for setting up of coal washing plant is available at the plant site.

CHAPTER – V

TECHNOLOGY & PROCESS

Scope Of The Project :

The scope of the project shall be to establish a coal beneficiation facility, including crushing & screening of raw coal, to ensure supply of washed coal to suit the requirement of sponge iron kiln and also middling coal to suit the requirement of AFBC power plant.

Coal Washing Processes

There are several processes for coal washing which may be categorised under two broad headings as follows :

Dry ProcessPneumatic tables or Jig.Rotary Breaker.

Wet Process

Natural media barrel. Natural media cyclone.JigChance cone separator. Heavy media Bath. Heavy media drum. Heavy media cyclone. Larcodem. Triflow separators. Dyna Whirlpool separator. Vorsyl Separator. Froth floatationColumn floatationSpirals

Brief description of some of the processes

Principles and techniques of different coal cleaning methods have been outlined below:

Jigging

The separation of coal from shale is accomplished in a form of fluidised bed created by a pulsing column of water which produces a stratifying effect on the raw coal. This is quite different in its effect from dense-medium separation. This stratifying effect results in a definite order of deposition of all fragments contained in the bed. The main purpose of the rising and falling column is to create what is known as ‘dilation’ or opening up of the bed, and it is the extent to which this dilation may be controlled which governs the effectiveness of the separation.

During the pulsion, or rising part of the cycle, the bed is elevated en masse. But as the velocity decreases towards the end of the pulsion stroke, the bed begins to dilate, with the bottom ceasing motion first and the lowermost fragments commencing their descent. This produces an element of freedom of movement for all fragments signalling the commencement of the various principal effects leading to stratification. The most influential effects occurring during jigging are, in order of occurrence :

dilation; differential acceleration; hindered settling; consolidated tracking

The Jig is divided into two compartments lengthwise, one completely sealed from the atmosphere called the air chamber and one open section, which receives the material to be separated and accommodates it during the stratification process. The water valve allows admission of ‘ back water’ at a level below that of the bed plate. The longitudinal section is further divided into several sections or compartments along the direction of flow. The purpose of this is to provide control over the separation as the material moves along the box, hence each of these sections has its own individual air and water controls. Two-elevator arrangement is the most common. In the first, moving along the direction of flow, the heavier shale are separated. In the second, lighter stones and any middling are extracted.

The plate ,which supports the coal and shale bed, usually referred to as the bed plate or screen plate, allows the water current to rise and fall and is usually perforated. Fine material inevitably percolates through the perforations to the hutch compartment and this is removed by screen conveyor which delivers it to the bucket elevators.

Efficient collection of the product is of paramount importance. Clean coal overflows the end of the box together with the majority of the flowing water.

Merits

Water is used in this process instead of magnetite.This process gives fairly good efficiency if the coal is easy to wash (low NGM like European coal) at cut point gravity above 1.7 ( deshaling application).Large size coal upto ( - ) 100 mm can be fed to Jigs.

Demerits

Not a suitable process for washing Indian Coal which is “Exceedingly Difficult” to wash due to high Near Gravity Material (NGM).Mediocar efficiency.Sensitive to variations in feed rate and / or characteristics.Electronic adjustment system is complex and requires optimizing.Efficiency becomes extremely low for gravities below 1.60. The process misplacement is very high. High EP (Ecart Probable) around 0.14. Difficulties in maintaining good product quality.

Heavy Media Coarse Coal Bath

Static dense-medium bath behave in a similar way to laboratory float-sink apparatus. Two categories of dense-medium baths, deep baths and shallow bath, have many common features. Float products are removed from the top of the baths, usually by paddles or by the natural flow of the medium. Discard removal varies from one type to another. Dense medium baths usually treat coal in the 100 mm X 6 mm size range.

Merits

The process have good efficiency of separation for coal above 10/13 mm size. Insensitive to variations in feed rate and / or characteristics. Easy to adjust the separating gravity. Wide range of separating gravity ( 1.30 – 1.90). Fairly good Ep of around 0.06 can be achieved.

Demerits

Coal below 10/13 mm size shall have to be separately washed in H.M. Cyclone or small Coal Jig which have lower efficiency.

If lower size coal is fed, the efficiency will fall drastically and also create other problems in the bath.

Efficiency lower than HM cyclone process treating sized coal.

Heavy Media Cyclone Cleaning

Where only gravitational forces are involved in providing the downward or high density separating force, the type of dense-medium separators employed treat only relatively coarse solids i.e., + 6 mm. They cannot separate out particles smaller than 6 mm effectively, as for such small particles, gravity is overridden by viscosity forces. What is required is a separating force surpassing gravity. As a cyclone utilises the centrifugal force (e.g., 100 X gravity) for the separation of fractions, it became possible also to treat fine-grained coal (sized, e.g. 0.5 mm to 6 mm). Because the force potential of cyclone separator is great, it is possible to treat relatively large quantities of raw coal in a unit of small physical size when compared to dense-medium baths. The corresponding relationship to this form of separation is:

Settling Velocity, S = [ S2/r X v(d – D) – R]Where, v is the volume of coal sphere., d is the density of coal, D is the relative density of the fluid, R is the resistance factor and r is the radius of the path of the grain.

The feed comprising raw coal and medium is introduced at a precise pressure into the tangential inlet. The ensuing flow is rapid and spiralling towards the apex of the unit, and in the core of the cyclone a very fast flow-rate creates centrifugal classification causing shale to move outwards towards the inner wall of the conical shell. As a result shale is discharged from the spigot or nozzle and coal is carried by the rising internal spiral towards the vortex finder to be discharged from the overflow.

Merits

Due to higher efficiency of separation more yield of cleans. The process can handle wide variation in capacity. Specific gravity of separation can be adjusted very easily, if coal characteristics change. Quantity of water handled much less compared to Jig Process.

Operation and maintenance is very easy. Most suitable for coal having difficult washability characteristics. Insensitive to variations in feed rate and / or characteristics. Wide range of separating gravity ( 1.30 – 1.90). Low Ep (0.025 to 0.035).

Demerits

As finely ground magnetite will be used there will be higher erosion in the pipe lines. Basalt lining or extra thick pipe will reduce the problem.

In case of power failure there will be a chance of jamming. The contents of slurry

lines are drained out to overcome this problem. The drained material is pumped back to the system after the plant restarted.

SELECTION OF SUITABLE PROCESS

Selection of coal washing process depends mainly upon the following criterion : Washability characteristic of input coal.Size and quality (ash & moisture) requirement of products.

Indian coal is of “drift” origin (unlike European, Australian Or American coal which are of “Insitu” origin), hence, have very high Near Gravity Material (NGM). Presence of high NGM (more than 20 units) in ROM coal makes the washing of coal very difficult. Hence, selection of suitable washing process is of paramount importance for Indian Coal. Bird’s classification of NGM Vis-à-Vis suitable washing process are indicated below

NGM Type of Coal Process0 – 7 Simple Coal Jig7 – 10 Moderately difficult Baths, tables, spirals10 – 15 Difficult to wash15 – 20 Very difficult HM Cyclone20 – 25 Exceedingly difficult> 25 Formidable

From the above table it is clear that the HM Cyclone process is the only suitable process for treating high NGM Indian Coal.

Moreover, from process efficiency point also, the HM Cyclone process is most suitable process which gives lowest Ep (Ecart Probable – means Error Probable) i. e; lowest misplacement. A comparison of EP achievable in various processes are given below :

1) HM Cyclone : 0.025 to 0.035.2) Jig : 0.10 to 0.123) Barrel : 0.09 to 0.10

The process misplacement which is depicted by the partition curve (Fig 8.3 attached) also shows minimum misplacement in case of HM Cyclone process.

Considering all the above mentioned factors H.M. Cyclone process is recommended for both primary & secondary separation. This shall contribute to higher yield by HM cyclone process which is about 10 to 15% more than Jig or Bath

CHAPTER – VI

PROCESS KNOW HOW

Total process know how shall be provided by A. Mukherjee & Associates. A. Mukherjee & Associates incorporated in 2003 with a totally futuristic perspective about the need of the industry.

The company, A. Mukherjee and Associates’ strength lies in their team of dedicated and knowledgeable people in the area of work. Key people of this team have rich experience and exposure in the field of coal washing for more than 25 years. A. Mukherjee and Associates is headed by Mr. A. Mukherjee who has vast working experience in the field of coal and mineral beneficiation, material handling plant in various premier organisation like TATA Steel, Jindal Steel and Power Ltd. M.N. Dastur & Co. etc. Experts who have joined hands with Mr. A. Mukherjee are from reputed Govt. and Private Sectors and works with enthusiasm and with a sense of belonging to the organisation and strong conviction with their rich experience in coal and mineral benification.

A. Mukherjee & Associates through its experience and worldwide exposure selects the proven technologies for process equipment and systems to cater the needs of constantly changing technology of coal and mineral beneficiation.

Plant and Machineries for the washing plant shall be procured from various reputed manufacturers in India and abroad as per the specifications laid down. Detail engineering, design and drawings for civil, structural, mechanical, electrical, control system and instrumentation shall be provided by M/s. A. Mukherjee & Associates. Civil work and site construction and erection jobs shall be executed by reputed parties in the field.

CHAPTER – VII

BRIEF DESCRIPTION OF THE PROCESS

Pre-treatment section

Raw coal from mines shall be transported to the washing plant by Rear Dump Trucks. Trucks shall either dump coal through truck tippler in the ground hopper or on to the nearby ground dump from where the same shall be fed in the ground hopper.

From the ground hopper the raw coal shall be subjected to three stage close circuit crushing and screening and finally sized to minus 20 mm. The size coal shall be taken to a series of storage (surge) bunker.

Washing Section

Sized raw coal, (-) 20 mm., from surge bunker shall be transported to the washing plant building through belt conveyors where the same shall be fed into coal wetting launder where water shall be added with coal. Coal water slurry then shall flow through launder to a set of Desliming Sieve Bend and Screen to remove (-) 1 mm coal fines from the coal. Coal slurry collected from Desliming Sieve Bend and Screen under pan shall gravitate through pipes to a Fine Coal Sump.

Deslimed coal Coarser fraction of (+) 1 mm shall go from screen discharge chute to the launder. Magnetite media of required specific gravity shall be added at the back of the launder to get mixed with the coal and simultaneously to push the mixture of magnetite & coal slurry into the central column provided in the centre of the Primary HM Cyclone tank.

Coal & magnetite mixture from the centre column shall be pumped by Primary Cyclone Feed Pump to feed to Primary Heavy Media Cyclones. Cyclones are lined with high alumna ceramic tiles. Cyclone shall have overflow and underflow. Clean coal along with magnetite media shall be received as over flow from the cyclone and be fed to a set of Clean Coal Sieve Bend and Clean Coal Draining & Rinsing Screen. Magnetite media shall be drained through Sieve Bend and first part of the Screen and be collected in the screen’s dense catch pan. The same shall be re-circulated back to the primary washing system.

The carried away magnetite with the coal particles shall be removed by water spraying in the discharge part of the screen. Magnetite removed from coal by water spraying shall be collected in the dilute catch pan of screen as dilute media, and be taken to dilute media tank

Underflow of primary cyclone treated as primary discard shall be fed to a set of double sieve bend. Magnetite media drained through sieve bend shall be re-circulated back to the primary system. Primary discard collected from discharge end of double sieve bend shall be fed to the central column of secondary heavy media tank along with magnetite media of required specific gravity.

Coal and magnetite mixture from the central column shall be pumped by secondary cyclones feed pump to feed secondary heavy media cyclones. Middling along with magnetite media shall be received as overflow from the cyclone and shall be fed to a set of sieve bend and draining & rinsing screen. Underflows of cyclone along with magnetite are also fed to a sieve bend & screen. Magnetite media shall be drained through sieve bend and first part of the screen and be collected in the screen’s dense catch pan. The same shall be re-circulated back to the secondary system.

Carried away magnetite with the coal particles shall be removed by water spraying and be collected in the dilute catch pan of the screen and the same shall be taken to dilute media tank.

Clean coal collected from discharge end of clean coal screen shall be dried in centrifuge and transported to clean coal storage shed through belt conveyor / or directly to clean coal storage bunker.

Middling collected from overflow of the screen shall be dried in a centrifuge. Dried middling along with dewatered fine coal shall either be transported directly to Power Plant through belt conveyor or to middling storage bunker.

Reject collected shall be transported to a reject bunker and from there to reject disposal area.

Fine coal slurry collected in the fine coal tank shall be pumped into a set of classifying cyclone. The underflow of classifying cyclone shall be dewatered in Hi Frequency screen while the overflow from cyclone shall be fed to a Hi-rate Thickener. Thickened slurry from thickener shall be dewatered in a Multi Roll Belt Press filter. Anionic and Cationic Flocculants shall be used in thickener and Belt Press to facilitate settling and dewatering process. The discharge from Hi Frequency screen mixed with middling is transported to power plant through belt conveyor. The discharge of belt press shall be dumped on the ground.

Media Preparation & regeneration Circuit.

Dilute media as collected in the Dilute Media Tank shall be pumped by a Dilute Media Pump to a Magnetic Separator Feed box. From there, the dilute media shall be feed to a Wet Drum Magnetic Separator. The Separators shall separate out magnetite from water and the dense media gets dislodged from the magnetic drum to

the dense media launders and from there to the Primary Heavy Media Tank and Secondary Heavy Media tank.

Effluent from the magnetic separator goes to fine coal tank through wetting launder.

During the process of operation, some amount of magnetite gets lost which shall be made up by adding fresh magnetite to the system. For this purpose, a magnetite addition RCC sump shall be provided where ground magnetite shall be charged and diluted with water. The dilute magnetite media then shall be pumped through a vertical sump pump to the Dilute Media Tank.

Following drawings are attached :

1) A typical Flow Diagram is attached (Ref Drg. No. PMBPL/FS/01 Rev.–0) for reference.

2) A typical Flow Diagram for Effluent Treatment is attached (Ref Drg. No. PMBPL/FS/02 Rev.–0) for reference.

3) A conceptual plant layout is attached (Ref Drg. No. PMBPL/M/01 Rev.–0) for reference.

Process Control Philosophy

Plant control shall be achieved by a centralised PLC based control system designed to enable one operator to start-up, monitor, control and shut down all main equipment, and process functions from the feed input to the plant through to product transfer conveyors. The PLC shall have provision for hot standby. An UPS with hot standby back up shall be provided to take care of power tripping and fluctuations.

All major items of equipment will be interlocked in an automatic stopping sequence within the PLC in such a manner that both material and liquid flows will always be fail safe. Stop push buttons will be located adjacent to each drive and will be operable at all times.

An emergency stop button shall be located either in the control room or in the operating computer to enable the whole plant to be stopped.

The density of the magnetite media shall be accurately controlled within the wide range to maintain required quality of the washed products. The density measurement shall be done by a nucleonic density gauge. Indication and recording of the density levels shall be given in the control room computer. The specific gravity control shall be achieved automatically by respective modulating splitter actuators.

CHAPTER – VIII

PROJECT ENGINEERING (CIVIL & ENVIRONMENT)

LOCATION AND ENVIRONMENT :

Layout and design of the washing plant shall be made in such a way that there shall be zero discharge of effluent from the plant, minimum emission of dust in and around the plant, the low decibel of equipment.

Right from the inception, scientific reject disposal management shall be followed to manage the rejects. Low lying area near the plant shall be purchased where reject shall be disposed off. Again on the reject heaps plantation shall also be organised. Washing Plant shall be provided with environment and pollution control devices.

LAND AND ITS DEVELOPMENT : The total land required for the coal washing plant excluding raw coal and washed product storages shall be 250 M X 400 M (approx.). After acquiring the land the same shall be developed to suit the installation of the washing plant. Approach road and boundary wall shall be made so as to start the project work smoothly. Soil testing and ground water survey work shall be taken up simultaneously.

CHAPTER – IX

POLLUTION CONTROL & ENVIRONMENT

Design of washing plant shall include measures to ensure pollution free pleasant working environment in the plant area. Measures adopted :

1) Dry Fog type dust suppression system shall be installed to control floating dust in the atmosphere to minimum acceptable level.

2) Plant shall have close circuit water circulation system so that no effluent is discharged in the open outside the plant boundary.

3) Costly imported equipment like centrifuge, belt press filter, high frequency screen as well as thickener shall be installed to ensure close circuit water system and also to minimise loss of water through products, evaporation losses and conserve this precious natural resource.

4) Afforestation shall be carried out on reject heaps, dumped in nearby low lying areas, to restore greenery which may be partially destroyed during construction.

CHAPTER – X

POWER & UTILITY

Power :

The total connected load for the coal washing plant including crushing & screening shall be around 5000 KW. Specific power consumption for washing including crushing & screening shall be around 4 units per tonne of raw coal throughput.

Water :

The requirement of make up water shall be around 50 m3 / hr. The plant shall be provided with a RCC water reservoir of around 900 cu. m. storage capacity.

CHAPTER – XI

MANPOWER

Plant Management of an industry is the vital part of the unit for its survival. Management will be responsible for overall efficiency of the unit. Management shall be supported by a group of highly skilled persons of varied expertise and experience who function individually and collectively for the overall performance of the unit. Based on the above principles we fix an organisation for this unit who will look after the various activities of the unit.

01. Manager Production 1 No.02. Engineer (Mech. & Process,

Electrical & Instrumentation)4 Nos.

03. Foreman cum control room operator 8 Nos.04. Fitter cum Operator 10 Nos.05. Helper 10 Nos.06. Electrician 8 Nos.07. Helper for Electrician 8 Nos.08. Instrument mechanic 4 Nos.09. Chemist 4 Nos.10. Helper for chemist 4 Nos.

TOTAL 61 Nos.

Besides, unskilled workforce required for cleaning & other day to day jobs like magnetite charging etc shall be hired from contractor (10 heads per shift).

Cost Estimate 3 Product, 200 TPH throughput capacity Coal Washing Plant

Sl. No.

Item Description Make Quantity Amount(Rs. in Lakhs)

TotalA.A.1

Know HowDesign and Engineering

L.S.

B. Building & Structural B.1 Civil Work (RCC

work including)Cu M3

B.2 Structural Steel work

MT

Sub Total BC. Plant & MachineryC.1 Unbalance Motor

FeederIC / ELECTROMAG/TRF Lot

C.2 Over Band Magnetic Separator & Metal Detector

ELECTROMAG 2 Sets

C.3 Rotary Breaker L&T/TRF/MBE 1 No.C.4 Crusher TRF/MBE/MECH TECH 4 Nos.C.5 Dry Screen MECHTECH / TRF / IC 4 Nos.C.6 Wet Screens :

DeslimingD&R Screen

TRF/IC 12 Nos.

C.7 Sieve Bend MMH 16 Nos.C.8 Pumps (Slurry) Metso/Warman / MBE Lot.C.9 H M Cyclone 710 Carborundum 12 Nos.

C10 Classifying

CycloneCarborundum 12 Nos.

C.11 Hi Rate Thickener HDO/MBE/Delkor 2 Nos.C.12 Horizontal Basket

CentrifugeDon Valley, UK 6 Nos.

C.13 Wet Drum Magnetic Separator

Eriez/Ing. Mineral 4 Nos.

C.14 High Frequency Screen

Linatex, S.A / Parnaby, UK 3 No.

C.15 Multi Roll Belt Press Filter

Parnaby 2 Nos.

C.16 Air Compressor with drier

IR/Atlas

2 Sets.

C.17 Dust Suppression system

TPS / Kaveri Lot

C.18 Belt Conveyor MMH/TRF / Masyc 900 Mtr. C.19 Travelling Tripper MMH 2 Nos.C.20 EOT Crane with

grab bucketWMI / Federal / Asian /

Jaypee 3 Nos.

C.21 Rock Breaker 1 No.C.22 Miscellaneous

Items like gate etc. MMH Lot

C.23 Erection & Commissioning

LS

C.24 Taxes & duties Sub Total C

D. Misc. Fixed AssetsD1 Pipes & Pipe fitting Steel Tube / Vasuki LotD.2 Valves Vaas/ Audco/ Steam &

Mining / Vasuki Lot

D.3 Tiles & tiling work VS Enterprise/ CUMI Lot D.4 Electricals LotD.5 Instrument & cable LotD.6 Plant Lighting etc. LotD.7 Public Address

systemLot

D.8 Laboratory Equpt. LotSub total D

E. Total A+B+C+DF. Contingency 5%

Grand Total

CHAPTER - XIII

Operating Cost

OPERATING COST

The operating cost of Coal Washery per tonne of raw coal throughput shall be

Manpower - Rs. 5.00Magnetite - Rs. 3.00Flocculent - Rs. 6.00

Spares - Rs. 8.00Lubricants etc. - Rs. 5.00Electricity - Rs. 18.00 Misc. - Rs. 5.00

Rs. 50.00

Interest and depreciation extra to be added.