LM vertical grinding mill and LUM ultrafine vertical mill are roller mills which use roller and ring to grind the barite rock into fine powder. The final barite powder fineness can be 325 mesh, and usually 200mesh barite powder is used widely in the oil drilling industry.
Barite is a mineral consisting of barium sulfate (Barium, BaSO4) with a medium low hardness (3 of the Mohs scale) and an average specific weight of 4.5 kg/dm3.
When barite grinding mill is at work, the main bearing and each dial are driven by electromotor through reducer, and all the grinding rollers are rolling in the ring channels driving by dial through plunger. The materials are driven to the edge of the turn plate by the centrifugal force and fall down into the grinding chambers.
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