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Crushers FAQ’s

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Roll Crusher Jaw Crusher Rotary Crusher Sample Grinder Hammer Mill

Roll Crusher:

1.  What is a good application for a Roll Crusher?
  Reduce dry, friable, fractional-size process material to uniform granular sizes.
2. What Rolls materials are available?
  Heat treated Carbon Steel as standard, Hardened Alloy Steel, Manganese as options (Alumina Oxide available for some models.)
3.  How is product fineness controlled?
  The Rolls gap is manually adjusted by a handwheel.
4.  How much can process material feed be reduced?
  Ideally, 3:1, or less, feed-to-product ratio; 4:1 maximum.

Jaw Crusher:

1.  What is a good application for a Jaw Crusher?
  For coarse and intermediate Crushing. Reduce dry, friable, soft or hard chunks of process material to fractional sizes.
2.  How is product size controlled?
  Jaws gap is manually adjusted by handwheel.
3.  What Jaw Plate materials are available?
  Cast Ni-Hard is standard, Manganese and Cast Steel as options.

Rotary Crusher:

1.  What is a good application for a Rotary Crusher?
  Reduce large, dry, friable, chunks of soft to moderately hard process material to uniform coarse or granular sizes at high capacities.
2.  How is product size controlled?
  Product size is manually adjusted by handwheel increasing or reducing gap between crushing elements.
3.  How are wear areas accessed for maintenance?
  All models are “Open-Door” door design for easy access to wear parts for inspection and maintenance.
4.  What is the material construction of the Wear Elements?
  Cast “Chrome Iron” is standard, Cast Ni-Hard is an option.

Sample Grinder:

1.  What is a “Sample Grinder”?
  Reduce dry, friable, fractional-size process material to uniform granular sizes.It’s a disc mill with one rotating and one stationary Grinding Disc.
2. What is a good application for a Sample Grinder?
  Fine grinding of small fractional, dry, friable materials.
3.  How is product size controlled?
  Product fineness is adjusted manually by increasing or relieving pressure on the Grinding Discs with a handwheel.
4.  Are various Grinding Disc materials available?
  Cast Iron (as standard), Cast Ni-Hard and Alundum, which is an aluminum oxide based stone for abrasive materials, as options.

Hammer Mill:

1.  What is a good application for a Hammer Mill?
  Size reduction for any dry, friable, soft to medium hard material to granular powder not requiring a tight product size distribution.
2. How is product size controlled?
  Grate, or Screen spacing determines product size.
3.  How are wear areas accessed for maintenance?
  All models are “Open-Door” door design for easy access to wear parts for inspection and maintenance.
4.  What is the material of the impacting Hammers?
  Alloy Steel (can be supplied hardened), liners are also Alloy Steel.


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Roll Crusher Jaw Crusher Rotary Crusher Sample Grinder Hammer Mill


Sturtevant, Inc.
348 Circuit Street Hanover, MA 02339 USA
1-781-829-6501
1-800-992-0209
 
 
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