The high - pressure micro - powder mill is called micro powder mill, which can be compared with airflow mill.High-pressure micro powder grinding mill mainly for conventional materials, such as kaolin, limestone, calcite, talc, marble, barite, gypsum, iron oxide red, iron oxide green, aluminum hydroxide, pigment, bentonite, clay and so on humidity is more than 8%, below the mohs hardness at level 6 non flammable material of superfine powder processing.Working principle of the high pressure micro powder mill: the material being broken by the bucket elevator to surge bin, again by vibrating feeder evenly into the host grinding chamber, shovel knife scooping up, after entering crushed between grinding roller and grinding ring knead, fan will be blown into the interior, blow to the powder machine, air separation, short of fineness and fall back into heavy grinding, qualified fine powder increases with airflow into the finished product cyclone powder, and air separation from the discharging mouth eduction is the finished product. Material containing certain moisture, grinding will generate a certain amount of water vapor, and the entire pipeline because the seal is not absolutely strict certain air is sucked into the outside world, make the system cycle air volume increase, in order to ensure the mill work under negative pressure condition, excess air into the bag filter to purify the back into the atmosphere.