... One year warranty Four Roller Crusher for Coal and sintering plant1.Certified: ISO90012.Stable performance3.Long ... marl, chalk, brick, slag, chamotte, feldspar, coke and so on.Crushing materialsMedium hardness ore, limestone, chalk, chamotte ... 2-4When the upper rollers distance is 10mm and the lower rollers distance is 2mm≈16Upper rollerrotation ... 27378 Four Roller Crusher for coal and sintering plant