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本文介绍了一种从水溶液中萃取钨的方法。该法中使用的含钨水相,初始pH为2.2—4.0左右。有机相由萃取剂(仲胺或叔胺)、相改良剂和液体碳氢化合物组成。采用逆流多段萃取得到含富钨的有机相和pH为3.0—4.5的萃余水相。
This article describes a method of extracting tungsten from aqueous solutions. The method used in the tungsten-containing aqueous phase, the initial pH of about 2.2-4.0. The organic phase consists of extractant (secondary or tertiary amine), phase modifier and liquid hydrocarbon. The countercurrent multi-stage extraction is used to obtain a tungsten-rich organic phase and a raffinate aqueous phase with a pH of 3.0-4.5.