... ), such as cement clinker (born), quartz, feldspar, calcite, dolomite, graphite, fluorite, wollastonite, phosphate rock, calcium magnesium phosphate, coal, gangue, ... desulphurizing efficiency and is an ideal desulphurizing powder equipment. High pressure trapezoid mill Technical parameters ModelRollerNumberRollerDiameterRingDiameterMaxFeedSizeFinishedSizeFineness of finished product(mm) ...