... powdery materials with moisture content ≤ 5% into pieces or tablets, then going through the processes of breaking ... CrusherSolids in the gap between two counter-rotating smooth or profiled rollers.The produced material ribbon, called sheet, ... metasilicate, is sodium silicate, cryolite, aluminum fluoride, brake powder, rubber additives, silica, calcium aluminate, TSP, SSP, carnallite stone, phosphate ...