前言众所周知,包头矿是我国巨型稀土资源。目前,包钢选矿厂采用N-环基羟肟酸铵从稀土、萤石混合泡沫再经摇床重选所得稀土粗精矿中回收高品位稀土精矿,稀土品位只有50—60％,回收率50％左右,其中有害杂质Fe、CaO和BaO含量分别达3—8％,4—8％和2—3％,尚存在部份药剂污染环境问题。 Preface As we all know, Baotou mine is China’s giant rare earth resources. At present, the Baotou Iron and Steel concentrator using N-ring ammonium hydroxamate ammonium from the rare earth, fluorite mixed foam by the shaker re-rare earth rough concentrate recovered high grade rare earth concentrate, rare earth grade only 50-60%, recovery About 50%, of which harmful impurities Fe, CaO and BaO content of 3-8%, 4-8% and 2-3% respectively, there are still some pesticides to pollute the environment.