Powder and Bulk Engineering
Thursday, August 21, 2014
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Powder and Bulk Engineering is a technical publication devoted to readers in the bulk solids market, worldwide.
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Publication Date: 07/1992
Pages: 3
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Mobile crusher rolls reduce material flow problem

Crusher rolls using large, internally operated pulleys move across a clogged coal grid, restoring material flow and cutting production downtime.

Trucks at a northwestern US coal processing operation dump run-of-mine coal through a 25-by-125-foot grid that prevents oversize pieces from overloading four primary crushers below. The grid's openings include 24-inch squares and 24-by-27-inch rectangles. Coal pieces smaller than the grid openings flow through to the crushers while larger pieces partially or totally clog the grid, eventually halting coal dumping and primary crushing.

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