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本文介绍了用TBP等砷萃取剂从铜电解液等含砷溶液中除砷的方法。该法首先是用有机溶剂萃取砷,然后用含有硫酸铵的水溶液组成的水相进行反萃,最后从含砷反萃后液中再生氨并回收再生氨时生成的沉淀物中的亚砷酸。回收的亚砷酸结晶为无色透明的优质结晶。
This article describes the use of TBP and other arsenic extractant from the arsenic solution such as copper electrolyte solution of arsenic. The method comprises the following steps of: arsenic is first extracted with an organic solvent and then stripped with an aqueous phase composed of an aqueous solution containing ammonium sulfate; finally, arsenous acid in the precipitate generated when ammonia is regenerated from the arsenic- . Recovery of arsenic acid crystals as colorless and transparent high-quality crystal.