Wet Batch Production Mills

5SL Attritor

How Batch Attritors Work

The Attritor is often referred to generically as an “internally agitated high energy media (ball) mill.” Batch Attritors work ten times faster than ball mills, and are advantageous because they offer simple operation, rugged construction, and a compact design. 

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Advantages of Using a Batch Attritor:

  • Ten times faster than ball mills
  • Simple to operate
  • Energy efficient
  • No premixing required
  • Minimum maintenance required
  • Rugged construction
  • Compact design
  • No special foundation necessary

Common Applications/Industries:

  • Ceramics
  • Paper Coatings
  • Cosmetics
  • Glass frits
  • Industrial Coatings
  • Chocolate
  • Chemicals
  • Metal
  • Paint
  • Pharmaceuticals
  • Ferrite
  • Ink
  • Electronics
  • Catalysts
  • Carbides
  • Toner
  • Plastic
  • Rubber
  • Confectionary
  • Recycling
  • Many Others

S-100 Batch Mill Attritor
S-100 Attritor shown with optional riser

“S” Series

Batch-type Production Attritors are designated as “S” (Standard). When specially configured arms are ordered as an option the model designation becomes “SL.” When a torque meter is added to a machine, a “T” is added to the model designation. Batch Attritors range in size from a 16-gallon gross tank capacity to a 600-gallon gross tank capacity and from a 5 HP motor to a 150 HP motor. These versatile and easy-to-maintain grinding mills have been successfully used in a variety of industries to grind everything from chocolate to tungsten carbide. In addition, Attritors can be produced to meet the requirements of even the most stringent applications such as the electronic ceramic market. For this application, Attritors are available with metal-free systems to assure a contamination-free environment.

Batch Attritors offer the advantage that the material can be inspected any time during the grinding cycle. Therefore, adjustments or formulation additions can be accomplished without stopping the machine.

Attritors are ideal for long-term, heavy-duty, semi- and fully-automated production operations. They may also be used in conjunction with programmable controllers in highly sophisticated production environments.

Engineering Data

ATTRITOR MODELS-5S-10S-15S-30S-50S-100*S-200S-250S-400
Gross Tank Volume (gals)17 25 53 82 157 313 375602 
Slurry Capacity (gals)4-5 7-9 10-12 23-25 34-37 70-75 140-150 177-187280-300 
Media Volume (gals)12 25 37 75 150 187300 
HP***3-5** 5-7.5 5-10 10-20 15-25 20-40 40-75 50-10075-150 
Height****79″ 80″ 83″ 89″ 97″ 106″ 121″ 129″147″ 
Floor Space (W x D)34″x 63″ 52″x42″ 52″x42″ 61″x43″ 74″x50″ 82″x56″ 88″x72″ 90″x76″108″x80″ 
Machine Weight (lbs) w/o media 1,500 1,800 2,200 3,100 3,500 6,000 10,700 12,00016,000
*These specifications apply to all S-100 machines since 1987 when the machine was redesigned to have a larger capacity.
**Features variable speed drive motor.
***High Starting Torque motors. 
****Varies according to motor HP.
Equipment can be built to CE specifications, if required.

“SC” Series For Tungsten Carbide Applications


High density material such as tungsten carbide requires a specially designed heavy-duty Batch Attritor. The “SC” Series Attritor meets this special processing requirement. Available with tank capacities ranging from 7 gallons to 245 gallons and horsepowers ranging from 7.5 to 125, these powerful grinding mills feature a tapered tank to reduce load on the bottom arms for easy starting. A special lifter arm raises media and product off the bottom of the tank. Arms are sleeved with tungsten carbide to reduce wear and contamination.

The tank has a ball discharge valve and media discharge chute at the bottom for easy removal of media. A water-cooled cover with a floating teflon seal minimizes solvent loss.

The tungsten carbide Attritor is also available with an optional torque meter to precisely measure energy input for determining processing time.

A worm gear assembly attached to the tank allows the tank to be tilted. In this position, the shaft and arms can be easily removed and/or inspected and the grinding media changed, if necessary. All models come complete with a pumping system which is used to circulate material during grinding and to discharge product.

Engineering Data

Gross Tank Volume (gals)71220426287117161245
Slurry Capacity (gals)2.5-3.54-67-918-2025-2835-3945-5068-7590-100
Media Volume (gals)358182637477194
Floor Space (W x D)36″x 64″59″x42″59″x42″65″x48″72″x54″78″x55″83″x56″89″x64″94″x72″
Machine Weight (lbs) w/o media 1700240027003700460050006500890011,000
*Features variable speed drive motor.
Equipment can be built to CE specifications, if required.