Overview of Grinding Mill: High Pressure Suspension Mill is a kind of new mill, which is invented with great concentration and on the basis of many years of powder processing experiences. This invention starts an era of high efficiency and low cost in international mining industry. High Pressure Suspension Mill can be used to grind non-inflammable and non-explosive materials with Moh's hardness below 9.3 and moisture content below 6% like barite, limestone, pottery, scoria. Size of final products can be adjusted between 80-425 mesh (The fineness can reach 1000 mesh). High Pressure Suspension Mill can produce coarse powder between 30-80 mesh by adding special equipment. This machine is widely used in the fields like mining, chemical industry, construction materials, metallurgy,etc. Working Principle of Grinding Mill: In the mainframe of High Pressure Suspension Mill, there are strong springs with pressure as high as 1000-1500 kg equipped on the roller suspender. When the High Pressure Suspension Mill works, the roller rotates around the principal axis, and clings to ring under the effect of the strong spring and eccentricity. It is 1.2 times of Raymond mill under the same press condition, so the production is largely increased. When the materials are sent into the grinding chamber, they are brought to the space between the roller and ring and get grinded. Then the grinded powder will be blown into separator. The fine powder after departed with the air is discharged through the outlet as final product. The large-sized powder falls back for regrinding. The air will be back to the blower for repetition of the above process. The left air wil come to thel bag filter to get cleaned. When the wear and tear between roller and the ring reaches certain degree, adjusting the length of the strong spring to keep the invariable pressure between the roller and the ring, to make sure the stable production and the fineness. Characteristics of Grinding Mill: 01- Compared with other mills, its capacity increaseed by 10%-20% under the same power condition, and compression force of rollers to material improve 800-1200kgf under the force of high-pressure spring. 02- Size of final product can be 0.613mm (30mesh) 0.033mm (425mesh). Some can reach the fineness of 0.013mm (1000 mesh). 03- High Pressure Suspension Mill meets the requirement of national dust-dump standard. 04- The separator can be adjusted very easily. 05- The multi-class seals are adopted to keep the grinding equipment tightly closed. Main technical parameter of Grinding Mill: Main Specification: Model HGM80 HGM90 HGM100L HGM125 RingDiameter(mm) 800 900 1000 1300 Ring Number(layer) 3 3 4 4 Roller Number(piece) 21 27 36 44 Main Shaft Speed(r.p.m) 230-240 200-220 180-200 135-155 Input Size(mm) ≦20 ≦20 ≦25 ≦25 Finished Size(um/mesh) 5-47 (325-2500) 5-47 (325-2500) 5-47 (325-2500) 5-47 (325-2500) Capacity(t/h) 0.5-4.5 0.6-6.5 1-8.5 1.5-12 Overall Dimension(L*W*H,m) 13.9*4*6.2 14.7*4.8*7.2 18*4.6*8.6 14*9*10.25 Motor Powder (Kw) 123-143 168.35 243.95 344.4 Power Parameter: Unit: KW HGM80 HGM90 HGM100L HGM125 Main Unit 75 2*45 132 185 Classifier 18.5 18.5 30 37 Blower 45 55 75 2*55 Crusher 11 18.5 18.5 45 Bucket Elevator 3 3 4 4 Spiral Conveyor 3 3 3 2*4 Discharging Valve 2*0.75 1*0.75 1*1.1 2*1.1 1*0.75 4*1.1 Air compressor 11 15 22 2*15 　 　 Remark:For the data with prefix such as "2*xx",it means there are two motors 2*0.75,configured for one item Forexample,discharging valve,HGM80 with configuration it means there are 2 pieces of 0.75KW motors installed with discharging valve.