对于白云鄂博主东矿铁精矿粉,采用直接还原-渣金熔分法将其中的稀土富集在脉石形成的熔渣中,测定了熔渣的化学成分、结构、熔化温度,考察了熔渣的微观形貌及其组成,探明了熔渣中稀土的富集状况。研究结果表明,海绵铁渣金熔分后脉石形成的熔渣的熔化温度为1350℃,熔渣中稀土元素显著富集,且稀土以氧化物形态优先结晶析出,稀土富集区中稀土氧化物的含量在60%左右。 For the iron ore concentrate of Bayan Obo East Mine, the rare earths were enriched in gangue slag by direct reduction-slag-gold method, and the chemical composition, structure and melting temperature of the slag were measured. The microstructure and composition of the slag, proved the enrichment of rare earth in slag. The results show that the melting temperature of the molten slag formed by sponge iron slag after pulverization is 1350 ℃, the rare earth elements are significantly enriched in the slag, and the rare earth is preferentially crystallized in the form of oxides. The rare earth oxides The content of matter is about 60%.