Primary Coal Crushers Grow to Meet Demand
WEBSep 12, 2009 · Employing some of the largest primary coal crushers, they are reducing 20 to 70inch RoM coal to 2 inches in a single pass. ... 500 to 800 tons per hour (tph), rather than the traditional smaller installations (150 to 200 tph) ... (150 to 200 tph) As far as improvements, Hamby sees a number of refinements being implemented to make .