... and reliable operation 4.Environment protection Where is coarse powder grinder used?Mining, chemical ,metallurgy industryCarborundum, zirconite, ... , barite, marble, limestone, talc, gypsum, slag, porcelain, glass,etc Hardness is below 9.5Non-explosive, non-flammable mineralsThe ... from the extruding, thus get the powder Why choose coarse powder grinder?Energy-savingHigh-efficiencyHigh utilization rate ...