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用传统的方法提高北奥涅加铝土矿中铬的品位,使这种原料的处理复杂化,这是由于在制备烧结料时形成了具有毒性的铬化物。使用磁选选别细粒嵌布的贫铬矿石曾经有过报道,报道指出,铬尖晶石的金属化粒级富集了氧化铁,这样就能用磁选法从非磁性部分中分选出磁性部分。
The traditional method of increasing the grade of chromium in North Onega bauxite complicates the handling of this raw material due to the formation of toxic chromium compounds in the preparation of the sinter. The use of magnetic separation to select the finely-graded chromium-depleted ores has been reported. It has been reported that metallized grains of chromium-spinel are enriched with iron oxide so that magnetic separation can be used to separate non-magnetic parts Magnetic part.