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依据白云鄂博矿中贫氧化矿主要矿物的选矿特性,在磨矿细度-74μm占90%,铁、稀土、铌单体解离度不太高的情况下,采用弱磁—强磁—浮选联合流程,首先将矿物进行合理分组,简化铁、稀土(铌)粗精矿中的矿物组成,提高铁,稀土、铌的单体解离度,并使恶化浮选作业的矿泥基本得到脱除,然后通过浮选,较经济地得到优质铁精矿、稀土精矿、稀土次精矿、富铌铁精矿等4种产品。另外,富铌铁精矿、浮铌尾矿、铁正浮尾矿中,钪有很大程度的富集,是良好的选冶提钪原料。磁浮联合流程大大提高了白云鄂博中贫氧化矿综合利用程度。
According to the beneficiation characteristics of the main minerals in the lean ore in the Bayan Obo Mine, when the grinding fineness is -74 μm and the dissociation degree of iron, rare earth and niobium is not too high, the weak magnetic-ferromagnetic-floating Select the joint process, first of all, a reasonable grouping of minerals to simplify the iron, rare earth (niobium) crude concentrate mineral composition to improve the iron, rare earth, niobium monomer dissociation, and worse flotation of slime basically obtained Removal, and then through the flotation, more economical to get high-quality iron ore, rare earth concentrate, rare earth ore, iron ore enrichment of niobium and other four products. In addition, rich niobium iron ore concentrate, floating niobium tailings, iron is floating tailings, scandium has a large degree of enrichment, is a good scaffold extraction scandium raw materials. The maglev joint process greatly enhanced the comprehensive utilization of lean oxide ore in Bayan Obo.