Micro Powder Grinding Mill. Long Working Life Ultrafine Grinding Mill 21 Rollers For 400-2500 Mesh Powder. 27 Rollers Talc Grinding Mill , Ultra Fine Powder Grinding Machine 1250 Mesh Powder. 400-3000 Mesh Industrial Powder Grinder For Fine Powder Lower Investment. 152kw Micro Powder Grinding Mill With Advanced Classifier For Precise Fineness.HGM Series Three-rings (Four-rings) Micro-Powder Grinder Mill is a new type of high efficient fine powder and ultrafine powder processing equipment .This type grinding mill is mainly suitable for grinding non-flammable and non-explosive brittle materials with low and middle hardness (mohs hardness . 6) and moisture content less than 5 and it is currently the best choice for super fine crushing.