钨的萃取研究,在五十年代开始使用胺类萃取剂。到了六十年代前后,美英的一些厂家将胺类萃取剂用于钨工业生产中。继后一些国家对该工艺进行了各种改进。为了提高钨的质量,产量和降低成本,在工艺中应用溶剂萃取已成为一个重要方面。白钨精矿经盐酸分解、氨溶、酸沉(即中和法)生产仲钨酸胺的过程中,将产生大 Tungsten extraction research, in the fifties began to use amine extractant. By the 1960s, some manufacturers in the United States and Britain used amine extractants for tungsten industrial production. Subsequent countries made various improvements to the process. Solvent extraction has become an important aspect of the process in order to improve the quality, yield and cost of tungsten. In the process of producing scheelite amines by scheelite by hydrochloric acid decomposition, ammonia solution, acid precipitation (ie, neutralization method), large