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萃取法分离钨钼是向含钨钼的水溶液中.添加硝酸或盐酸调整溶液 PH 在0.5～4.3.如入稳定的水溶磷盐和络合剂——双氧水。每克原子钨钼总量添加双氧水1.5～2摩尔.用磷酸三丁酯从上述溶液中选择性地萃取钼.水溶液和有机液采用相等的体积,用碱或苏打溶液从萃取后的有机溶液中萃取钼和部份钨。本法使钨溶液中含钼量不超过0.001克/升成为可能。并且提高了钨和钼的回收率。
Extraction of tungsten and molybdenum is separated to tungsten containing molybdenum aqueous solution.Add nitric acid or hydrochloric acid to adjust the solution PH in 0.5 ~ 4.3, such as into the stable water-soluble phosphorus salt and complexing agent - hydrogen peroxide. Adding 1.5-2 moles of hydrogen peroxide per gram of total amount of tungsten and molybdenum, extracting the molybdenum selectively from the above solution by using tributyl phosphate, using equal volumes of aqueous solution and organic solution, extracting with alkali or soda solution from the extracted organic solution Extraction of molybdenum and some tungsten. This method makes the tungsten solution containing molybdenum content of not more than 0.001 g / l possible. And increase the recovery of tungsten and molybdenum.