... soft materials with Mohs hardness<7Compared to ball mill, air-stream mill and impacting mill, it has low investment cost, low ... to get products with narrower size distribution.Grinding Medias and scale-board are made of high manganese steel, high cadmium ... crushing.According to materials nature, to adopt dry mill, wet mill, continuous mill or intermittent mill.According to GMP, used in dugs, herbal ...