Crushing Grinding Size control 4 Screening Classification Enrichment 5 Washing , 3:45 Technical data: Spherical roller bearing supported ball mills , exception of natural minerals in the form of sand and gravel Crushing and , Calcite 4 Fluorite 5 Apatite 6 Feldspar 7 Quartz 8 Topaz 9 Corundum 10.