Our superfine ball mill production line can be used for producing: (1) Soft materials: calcite, marble, limestone, kaoline, gesso, barite, coal ash and slag, etc. (2) Hard materials: carborundum, brown corundum, superfine cement, zirconium sand, and fire-proof materials, etc. (3) High purity materials: quartz, feldspar, a-alumina, glass fine bead, etc. (4) Metal …