High Pressure Roller Mill

high-pressure-roller-mill

High Pressure Roller Mill


High Pressure Roller Mill is the new type mining equipment for making micro powders, fine powders,which is widely applied in the industries of metallurgy, mining, chemistry, cement, construction, refractory materials, ceramics, and so on.The purpose of the micro powder grinding millis for super-fine grinding materials with hardness less than 9 in Moh's scale and humidity less than 6 percent such as kaolin, limestone, calcite, marble, talcum, barite, gypsum, dolomite, bentonite mud, mica, pyrophyllite, sepiolite, carbon black, diatomite, graphite, alunite, fluorite, potassium feldspar, phosphorite, pigment, up to 200 kinds.


Production line of High Pressure Roller Mill: consists of hammer crusher, bucket elevator, storage hopper, vibrating feeder, main unit, inverter classifier, cyclone collector, pulse deduster system, high pressure positive blower, air compressors and electrical control systems.
Working Principle of High Pressure Roller Mill:
When the grinding mill is at work, all the grinding rollers are rolling in the ring, and the materials are driven to the edge of the turnplate by the centrifugal force and fall down into the grinding chambers where the materials are repeatedly pressed, crushed and grinded by the rollers.
The high-pressure air blower constantly inhales air within the grinding mill and, in turn, the airflow with crushed materials are brought to the classifier whose high-speed impeller will screen the airflow: the unqualified particle size will fall and return to the mill for being reground while the qualified particle size mixed with air will go into the cyclone powder collector. Most of the qualified powders will fall and exit from the discharging valve at the bottom; a small proportion of the fine powders, with airflow, moves to the dust cleaner, and clings to the surface of the filter bags. At the same time, the fine powders clinging to the surface fall down by the sudden vibration of the filter bags, which is caused by the instantly ejected high-pressure gas controlled by the pulse valve. The materials from the above two lots are sent by the conveyor at the bottom to get finished powders packed. In addition, filtered clean air will be emitted from the air outlet of muffler in the end.
Features of High Pressure Roller Mill:
1.High Efficiency
Under the same finished final size and the same motor power, the capacity of Limestone powder production line,Limestone powder process line is twice as much as jet mill, mixing grinder and ball mill, and energy consumption decreased 30%.
2.Long lifecycle of spare parts
The ring and roller are forged by special material with high utilization,the lifetime can reach 2-5 years for grinding calcite carbonate.
3.High safety and reliability
As no rolling bearings or screws in grinding cavity, there are no problems caused by bolts shedding or rapid wear of bearings and seal components.
4.High fineness, flexible adjustment
The final fineness of the grinding materials can be adjusted between 325 meshes and 2500 mesh (47-5 micron), and the product fineness can reach D97≤5μm.
5.Environment-friendly
The application of pulse bag filter and muffler greatly alleviates dust pollution and noise.
6.Advanced intelligent speed control device
Convenient adjusting, more uniform particle size.
Main specification of High Pressure Roller Mill:
Model HGM80 HGM90 HGM100 HGM100A HGM125
Ring Diameter(mm) 800 930 1035 1035 1300
Ring Number (PCS) 3 3-4 3 4 4
Roller Number(PCS) 21 24-32 27 34-36 40-44
Main Shaft Speed  (r. p. min) 230-240 200-220 180-200 180-200 135-155
Input Size (mm) ≤20
Finished Size (um) 5-47(325-2500)
Capacity (t/h) 0.5-4.5 0.6-6.5 0.7-7 1-8.5 1.5-12
Outlet Size L*W*H (m) 13.9*4*6.2 14.7*4.8*7.2 18*4.6*8.6 18*4.6*8.6 14*9*10.25
Motor powder (KW) 145-165 185-204 263 263-290 380-430