Introduction of High pressure mill: High pressure millapply crushing pressure barite,limestone,ceramics, slag, etc. Mohs hardness of not greater than 9.3, humidity under 8% of non-inflammable mines, metallurgy,chemical industry,building materials and other industries more than 280 kinds of materials,product particle size is among 80-425 mesh. Increased a special device in the machine can produce 30-80 mesh coarse powder. Work principle of High pressure mill: In the high pressure mill mainframe,roll grinding hanger on fastening a 1000-1500 kg pressure spring.Beginning work,grinding spindle rotary roll around,and in the high-pressure spring and centrifugal force, keep grinding ring rolling.The rolling over pressure improve 1.2 times than same dynamic conditions raymond mill,the yield is greatly improved.When grinding materials into the grinding chamber,by the shovel blade into the grinding roller and grinding ring,after roller the powder with the blower circulating wind into the analytic engine,qualified with the powder gas inflow whirlwind both for the finished powder feeder,large particles tablets to regrinding. Circulating air blower to repeat the above process,I entered the Wind bag filter purification. When High pressure mill the grinding roller and grinding ring reach a certain wear, adjust the length of the spring pressure to keep on grinding roller mill Central constant grinding pressure. Thus ensuring stable output and fineness.