... hardness below 6 and humidity below 8%, such as kaolin,limestone, calcite, talcum,marble, barite, gypsum, iron oxid red,iron ... Grinder : High-pressure Micro-powder Grinder is composed of host machine, blower, cyclone powder collector for finish products, bag-type ... analyzer drives its impellers turn through driving device of electric machine, adjusting the speed of analyzer determines the fineness of ...