含镍钴的红土矿采用还原焙烧、氨浸,浸出的成品液经过蒸氨,得到含镍钴的碱式碳酸镍。碱式碳酸镍用硫酸铵溶液溶解,溶解液除含镍钴外,尚含有杂质铜、硫代硫酸盐和氨基磺酸盐,这些杂质在镍氢还原以 Nickel-cobalt-containing laterite ore is reduced roasting, ammonia leaching, the leaching of the finished product after steaming ammonia to obtain nickel-cobalt-containing basic nickel carbonate. Basic nickel carbonate dissolved in ammonium sulfate solution, the solution contains nickel and cobalt in addition, it still contains impurities copper, thiosulfate and sulfamate, these impurities in the reduction of nickel to