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金属钽是从含钽、铌和一种或几种金属离子杂质的混合酸(氟氢酸和硫酸)溶液中制备的。其制备方法是:将混合酸溶液同有机溶剂(A)接触来萃取钽,并同酮、中性磷酸酯、烷基胺或胺化物一起蒸馏,用水或合NH_3+HF或K+HF的水溶液反萃取钽,加入NH_3+NH_4OH或KOH+KF到含钽反萃液中而得到Ta、F、NH_3~+或Ta、F、K~+的沉淀物,加H_2SO_4、HCl、HI、HBr或HF于含钽萃取
Tantalum metal is prepared from a mixed acid (hydrofluoric acid and sulfuric acid) solution containing tantalum, niobium and one or more metal ion impurities. It is prepared by contacting the mixed acid solution with the organic solvent (A) to extract the tantalum and distilling together with the ketone, neutral phosphate ester, alkylamine or amine compound, with water or an aqueous solution of NH3 + HF or K + HF The tantalum is stripped, and the precipitate of Ta, F, NH3 ~ + or Ta, F, K ~ + is obtained by adding NH3 + NH4OH or KOH + KF to the tantalum-containing stripping solution, and adding H2SO4, HCl, HI, HBr or HF Tantalum in extraction