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.The wood powder with larger particles will enter the crushing room and continue to crush until it reaches the required fineness. Main features of the wood flour mill grinder. 1. The fineness of the products processed by this horizontal wood flour machine can be adjusted arbitrarily between 30-300 mesh.