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近年来,原苏联冶金部所属各采选企业加工的矿石铁品位降低了1.0％～1.5％,因而使磨矿和选矿费用增加了10％～15％。降低浸染磁铁矿加工费用的途径之一是将破碎的矿石在能耗大的磨矿和湿选过程之前,分成三种产品:粗粒浸染矿石、细粒浸染矿石和脉石。铁品位提高到50％～55％的粗粒浸染矿石可用作烧结精矿。如果无需分出这种物料,则粗粒浸染矿石和细粒浸染矿石可用湿式磁选机单独分选,因而可以避免磁铁矿过磨和降低矿石加工的能耗费用。
In recent years, the grade of ore iron processed by the mining enterprises selected by the former Ministry of Metallurgy of the Soviet Union has been reduced by 1.0% -1.5%, thus increasing the grinding and dressing costs by 10% -15%. One of the ways to reduce the cost of dip-magnetite processing is to separate the fractured ores into three products before the energy-intensive grinding and wetting processes: coarse-grained ores, fine-grained ores and gangue. The coarse grade impregnated ore with iron grade up to 50% -55% can be used as sinter concentrate. If you do not need to separate this material, the coarse-grained ores and fine-grained ores can be individually sorted using a wet-type magnetic separator to avoid over-milling the magnetite and reducing the energy costs associated with ore processing.