... crystal, choosing, crashing, magnetic, separating, screening, washing and acid washing, etc.2. SpecificationF: 4#-80# 90#-150 ... material: Mainly used for abrasion and high temperature resiatant, inoxidizable aggregate and filling of shaped and monolithic refractory in steel metallurgy ... ground: Mainly used for non-slip of airport and road, chenmical factoryboard paving.5) Precision casting: Investment ...