含铟浸出液中铟与锑、铁的分离和富集

Separation and Concentration of Indium from Leaching Solution of Containing Indium, Antimony and Iron Ions

研究了从冶炼锑渣浸出液中有效地分离铟与锑、铁的工艺条件 ;锑渣浸出液经P2 0 4 煤油溶液萃取、草酸溶液洗涤有机相和稀盐酸反萃取 ,可制得纯度 90 %以上的三氯化铟溶液 ;利用稀盐酸循环反萃取 ,使铟富集 ,浓度达到 2 5～ 30g/L。

Processing conditions of effectively separating indium from the leaching solution of a smelting antimony slag were researched. For the leaching solution of containing indium, antimony and iron ions, indium from the leaching solution by extracting indium ion with P204 kerosine solution, washing antimony and iron ions with H 2C 2O 4·2H 2O solution and stripping indium with a dilute solution of hydrochloric acid was separated. InCl 3 solution with purity above 90% is obtained. Indium can be concentrated through stripping with HCl solution. Indium content in InCl 3 solution is about 25～30 g/L.