| 摘要 |
mining industry. SUBSTANCE: method of concentrating iron, manganese, siderite, chromium, and other minerals includes multistage crushing of original mineral, fine breakage of material by centrifugal impact technique, separation of fine material in air classifier with ascending air flow, returning coarse fraction of material for fine post-breakage, high- gradient dry magnetic separation of desired-size material to isolate concentrate and refuse. EFFECT: enhanced process efficiency and improved quality of concentrate. 3 cl
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