The Industrial Hammer Mill: A Versatile Workhorse · The Industrial Hammer Mill: A Versatile...

The Industrial Hammer Mill: A Versatile Workhorse

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Table of Contents

INDUSTRIAL HAMMER MILLS

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Introduction…………………………………………….…………..3

How does a hammer mill work?…......…………….......…4

Applications............................................................5

Questions to ask……………………………………………………6

Hammer mill configuration……………………………………..7

Optional equipment……………………………………………….8

Laboratory Scale Hammer Mills Brochure.............….........9-10

WA Series Industrial Hammer Mills Brochure……….......…11-12

Contact us……………….………………………………………….13

One Design, Many Applications

The basic design of the industrial hammer mill is really

quite simple:

A steel chamber containing a shaft to which rectangular

steel hammers are affixed.

Replaceable plates lining the mill's interior to reduce wear

caused from grinding abrasive materials.

Steel screens or bar grates cover the mill's discharge

opening.

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When material enters the grinding chamber, it is repeatedly

struck by hammers that flail out as the shaft spins.

A combination of these hammer blows, particle on particle

impact, and impact with the walls of the grinding chamber

all work together to break the material down.

The material remains in the grinding chamber until it is

reduced to a size that will pass through the screen.

“How does a hammer mill work?”





The flexibility and design simplicity of the

industrial hammer mill lends itself well to

processing a wide variety of materials, including:

…just to name a few.

Applications


Questions to Ask

The same hammer mill for fishmeal and coal? Well,

yes and no. The basic framework of the mill is the

same. However, the configuration of the variable

components is how they differ. That

determination is based on the following criteria:

Material being processed - Material

characteristics such as: friability, flowability,

moisture content, and infeed size

Desired finished particle size - Gravel,

granules, powder?

Desired production rate - 10 lbs/hr, 10

tph, etc.




With this information, the following can then be

determined:

Hammer mill size - Rotor diameters between 6"

and 44", and internal mill widths of 6" to 72".

Hammer size and style - Number of hammers,

size, style and metallurgy.

Screens or bar grates - Style and thickness of

screen or bar grates, and size of openings.

Choice of proper RPM

Hammer Mill Configuration



Finally, once the mill is configured, the last

determination is whether or not any optional

peripheral equipment is needed. Answers to these

questions will help to determine the best types of

optional equipment such as belt conveyors, augers,

rotary feeders, and dust collection, as well as the

most efficient design of the infeed and discharge

chutes

Is dust a concern?

How will the material be fed into the

mill? By hand, auger, or belt conveyor?

How will the material be taken from the

mill? Heavy materials such as stone or

metal may evacuate via gravity, while light or

low density materials will require pneumatic

suction.

It’s Optional…

• Chemicals• Glass• Agricultural Products• Food Waste• Small Wood Scrap• Metal Powders

...And more.

W Series Laboratory Scale Hammer Mills

Choose from two models, each ideal for laboratory testing, batch sampling or pilot production.

The W Series Laboratory Scale Hammer Mill is a gravity discharge hammer mill that produces

results scalable to their high production counterparts. Available in two sizes, the W Series is ideal for

processing a wide variety of abrasive or difficult to reduce materials. Both models feature a

9” (230mm) diameter rotor with swinging or fixed mounted hammers and a mill top that hinges open

for easy screen change, cleaning, and mill maintenance. Optional fully integrated dust collection

equipment ensures a clean, dust free environment.

America’s fastest growing hammermill compaThny

QualityQUality, sincQe 1928Qua

The Leaders in Size Reduction

Quality, since 1928

Applications:


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Installations:

• Colleges and Universities• Government Testing Facilities• Laboratory Sampling• Pilot Plants• Chemical Testing• Food Industry

61 Depot Street | Buffalo, New York 14206 | 716-855-1555 | 1-800-447-4634 E-mail: [email protected] | www.hammermills.com

• Option of replaceable internal wear plates for processing abrasive materials.• 2 - 3hp motor.• Robust 3/8” carbon steel or stainless steel plate construction.• Screens available in over 20 sizes.• Options include: single phase motor, variable frequency drive (VFD), and custom support stand on casters.

Model Power Range Rotor Diameter Screen Area Weight RPM

W-6-H 1 - 2 hp (0.25 - 2 kW) 9" (230mm) 60 sq inches (390 sq cm) 225 lbs (100 kg) 1000-5000

W-8-LH 2 - 3 hp (1.5 - 2 kW) 9" (230mm) 78 sq inches (500 sq cm) 250 lbs (110 kg) 1000-5000

W Series Laboratory Scale Hammer Mill Technical Specifications

Key Features:

Mill top hinges open for ease of maintenance and screen change

9" rotor diameter features option of swinging or fixed mounted hammers.

_________________________ 55" ___________________________ ________ 24" ____________ ____ 18" ___

___

True laboratory scale hammer mill, weighing 225 lbs (100kg).


Quality, since 1928 www.hammermills.comThe Leaders in Size Reduction

WA Series Industrial Hammer MillThe WA Series is a gravity discharge hammer mill that can be constructed with a wide variety of grinding rotors and screen configurations to guarantee unmatched performance. Available in more than 20 sizes, ranging from 6" to 72", each mill features replaceable wear plates to protect the mill housing from wear that may result from processing abrasive materials. All models of the WA Series are custom configured to suit the user's material and production goals. In-feed and discharge chutes are designed to accommodate any method of feeding and take-away, ensuring a clean and safe operating environment.

Applications:

• Aggregates• Batteries• Bone Meal• Cement• Ceramics

• Coal and Coke• E-Scrap• Fish Meal• Glass• Hard Resins

• Hard Surface Products• Lathe Turnings• Metals• Miscellaneous Chemicals• Stone

Key Features:

Model HousingShaft

Diameter

Rotor

DiameterBearings

Wear PlateThickness RPM Range Horsepower

RangeWA-6-H

WA-8-L

3/8”

(10mm)

1 3/8”

(35mm)

9”

(230mm)

1 3/16”

(30mm)

3/8"

(10mm)1500 - 5000 rpm

WA-8-HWA-12-LWA-16-L

3/8”

(10mm)

2 1/2”

(60mm)

16”

(410mm)

1 7/16”

(40mm)

(2mm)(60mm)

WA-12-HWA-16-HWA-20-LWA-25-L

WA-20-H

WA-25-L

WA-30-L

WA-36-L

WA-30-HWA-36-HWA-40-LWA-50-LWA-60-L

WA-40-H

WA-50-H

WA-60-H

2-3 hp (1-2kw)

5/8"

(20mm)

(30mm)

1 1/4"(30mm)

(660mm)

(760mm)

(70mm)

(90mm)

(20mm)

(25mm)

(20mm)

75-200 hp

(60-150kW)

125-300 hp

(90-220 kW)

1”

26”

30” 3 1/2”

3/4”

1”

40”(1020mm)

3/4”

WA-72-H

3/8"(10mm)

700-3600 rpm5-20 hp (4-20kw)

10-20 hp (7-10kw)

18"(460mm)

1 15/16"(50mm)

1/2"(10mm)

600-3000 rpm

(20mm) 5/8"

3/4"

500-2800 rpm

500-2400 rpm

500-1800 rpm

500-1200 rpm

2 1/2”

24"(610mm)

3 3/8"(90mm)

4 3/8"(110mm)

5 1/2"(140mm)

6 11/16"(170mm)

2 7/16"(60mm)

3/4"(20mm)

15-50 hp (10-40kw)20-50 hp (20-40kw)

25-75 hp(20-60kw)

50-100 hp(40-70 kw)

WA Series rotor assembly featuring optional tungsten carbide coated hammers for highly abrasive applications.

Model WA-6-H Laboratory Scale

• Available in more than 20 sizes with widthsranging from 6" to 72"

• Rotor diameters from 9" to 40"• Choice of carbon or stainless steel construction• Multiple hammer styles and sizes available in a

variety of materials• Hammers are 4-way reversible for maximum

wear life

• Interchangeable, heavy duty bar grates orperforated screens made from abrasion-resistantsteel

• Replaceable interior liner plates offer wearprotection when processing abrasive materials.

• Custom feed and discharge chutes designed forany feeding and collecting method

The Leaders in Size Reduction61 Depot Street | Buffalo, New York 14206 | 716-855-1555 | 1-800-447-463461 D

E-mail: [email protected] | www.hammermills.com

WA Series Technical Specifications

Contact us

Request a quotation

Website: www.hammermills.com

Contact us: [email protected]

www.hammermills.com

Choose from three models, each ideal for laboratory testing, batch sampling or pilot production.

The W Series Laboratory Scale Hammer Mill is a gravity discharge hammer mill that produces results scalable to their high production

counterparts. Available in two sizes, the W Series is ideal for processing small hogged wood scrap, wood chips and planer shavings.

Both models feature a 9” (230mm) diameter rotor with swinging or fixed mounted hammers, and a mill top that hinges open for easy

screen change, cleaning, and mill maintenance.

The Model 18-7-301 Pilot Scale Circ-U-Flow Hammer Mill is a high speed hammer mill designed for processing light wood waste.

The nearly full circle screen covering the discharge opening provides for the highest possible production rate on materials that do not

require initial grinding against a breaker plate. The Model 18-7-301 is suitable for either gravity or pneumatic evacuation.

Applications:• Small hogged wood scrap• Wood chips• Planer shavings• Sawdust• Light bark

End Products: • Boiler fuel• Wood pellets• Wood briquettes• Cellulosic ethanol

Laboratory and Pilot Scale Wood Grinders

The Leaders in Size ReductionQuality, since 1928 www.hammermills.com

Model 18-7-301 Circ-U-Flow Hammer Mill

W Series Laboratory Scale Hammer Mill

The Leaders in Size Reduction 61 Depot Street | Buffalo, New York 14206 | 716-855-1555 | 1-800-447-4634 E-mail: [email protected] | www.hammermills.com

Key Features - Model 18-7-301 Circ-U-Flow:

• Pilot scale, 7“ (180mm) width.

• 10-30 hp motor.

• High speed (3600 RPM), 18” (460mm)diameter rotor allows for tip speed.

• Dual directional rotor.

• Hinged door with built-in screen support for easyaccess, cleaning and maintenance.

• Optional easy clean magnet.

Key Features - W Series Laboratory Scale Hammer Mill:

• True laboratory scale hammer mill,weighing 225 lbs (100kg).

• 2 hp motor.

• Robust 3/8” plate construction.

• Screens available in over 20 sizes.

• Options include: single phase motor,variable frequency drive (VFD), andcustom support stand on casters.

Model HousingShaft

DiameterRotor Width

Rotor Diameter

Bearing Size

Power Range

Screen Area

Tip Speed

18-7-301 1/4” (6mm)

1 7/8”(50mm)

7”(180mm)

18”(460mm)

2 3/16”(60mm)

10-30 hp(7-20 kW)

385 sq inches(980 sq cm)

16900

Model Power Range Rotor Diameter Screen Area Weight RPM

W-6-H 1 - 2 hp (0.25 - 2 kW) 9" (230mm) 60 sq inches (390 sq cm) 225 lbs (100 kg) 1000-5000

W-8-LH 2 - 3 hp (1.5- 2 kW) 9" (230mm) 78 sq inches (500 sq cm) 250 lbs (110 kg) 1000-5000

Model 18-7-301 Circ-U-Flow Hammer Mill Technical Specifications

W Series Laboratory Scale Hammer Mill Technical Specifications

300 degree screen coverage of rotor results in the highest possible throughput per horsepower.

Mill top hinges open for easy maintenance, cleaning and screen change.

The Industrial Hammer Mill: A Versatile Workhorse · The Industrial Hammer Mill: A Versatile...

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