Grinding production line is used in metallurgy, building materials, chemical, mining and other minerals material powder grinding.
It can be used for feldspar, calcite, talc, barite, fluorite, rare earth, marble, ceramics, bauxite, manganese ore, phosphate rock, oxidation iron oxide red, quartz,sand,cement clinker, activated carbon, clay, coal gangue, plaster, silicon carbide, and refractory material.They are all need the hardness below the rank 8, and humidity less than 6% ,with  the mineral materials of inflammable and explosive powder processing.
Ore Grinding process
After big block material through crusher broken to required size, the hoist will be sent to the bunker. After fenzi grinding of fan, it is taken away by air. By analyzing the grade machine, qualified fenzi currents into large whirlwind in the collector, and do the separation of collection.
This machine is the airflow system which is closed cycle, and  it is in positive/negative state of circulating. Because the department of the pipeline sealing is lax, outside air is sucked in cyclic flow increased flow, So through ajusting the fan and host of ductwork to achieve the balance of the air, and lead the excess gas into the bag filter,then collect the leaving fenzi gas, purificate back the more gas.

From:http://www.vipeakmill.com