raymond pulverizer is used for the highly fine power processing of 280 materials in some trades of non-flammable mine ,chemical industry and building materials etc and the materials has the mohs' hardness scale less than 9.3 level and the humidity of less than 6% and include barite, calcite, potashfeldspar, pencilstone, marble, limestone, dolomite, fluorite, lime, active carclazyte, acticarbon, bentonite, kaoline, cement, phosphorite rock, gypsum, glass and heat insulating materials etc. the particle size of finished product can be adjusted from 80-325 meshes at random and the particle size of part materials can reach 2000meshes at the maximum