This machine adopts the most advanced assembly technology, the host internal grinding chamber no bolts, no bearings, to solve the traditional mill dust bearing enter damaged, loose bolts and destroyed a significant problem. Second, this machine using a vertical two-stage double-chamber steel ball grinding apparatus (configurable high wear-resistant ceramic ball), driven by active grinding disc Ball rotation abrasive materials, to solve the traditional mill, roller mill ring, bearing into the gray and frequent replacement of wearing parts problems. Native strength hydraulics, alloy steel ball increased pressure on the grinding disc 6-20 tons, thus increasing the grinding speed of material forced, greatly improving the product fineness and yield, other equipment can not be replaced. Fourth, this machine has a two-stage grinding chamber, grinding fineness, large output, to solve the traditional mill the single grinding chamber and the fineness of the low yield problem. V. The machine adopts the double-stage inverter technology, multi-level hierarchical classifier multistage material grading accuracy rate can reach more than 99%, to overcome the traditional mill grading effect thorough problem. This machine grinding steel balls made of high quality alloy, manganese-chromium alloy production grinding disc, greatly improve the degree of wear (high wear-resistant ceramic can be used for special materials, grinding balls and grinding disc). Seven, the transmission part of the machine using the Vertical reducer, vertical drive shaft. Active grinding disc rotation driven by the vertical drive shaft and propeller shaft to a bolt in the grinding disc, no bearings, smooth operation, to solve the problem of the traditional mill drive part of the regular replacement of bearings, bearing bushes. 8, the local host using negative pressure, dust spills in the production process to solve the dust leakage of the ills traditional mill blower barotropic work in the production process. The machine adopts frequency grading, cyclone feeders under four cyclone feeder, played a the material grading semicolon role ten local host shell is made of a double chassis soundproof device, fan mute device and air purification device. Host and fan mute device greatly reduce equipment noise, pulse dust collector and air purification device to clear the dust, so that the equipment in the production process, no dust, noise, and more environmentally friendly. 11, the machine uses the low-speed, negative pressure air-cooled systems, abrasive materials inside the device does not heat, does not alter the original characteristics of the material. Solve the traditional mill, pulverizer the grinding chamber fever change the material of the original characteristics of the problem. 12, because the machine inside the device no bearing to avoid abrasive materials bearing oil spills, material contaminated. XIII wide applicability of this machine, suitable for high, medium, and low Mohs hardness of less than 10 kinds of material grinding. 14., Product fineness, product size is anywhere between 500-5000 mesh (25um-2.6um) adjusted for special materials fineness up to 8000 mesh (1.6um).