白钨矿分解工艺技术评价与发展方向展望

Technical Evaluation and Development Prospect of Decomposition Technique of Scheelite

对白钨矿的湿法冶金分解工艺进行了概述,对盐酸分解法、苏打烧结法、苏打压煮法、氢氧化钠分解法、氟盐分解法、硫磷混酸协同分解法、石灰烧结转化-碳铵分解法以及其他分解方法的优缺点进行了分析,指出氟盐分解法、苏打压煮法、硫磷混酸协同分解法将逐步成为主流的白钨矿分解工艺。

Based on a summarization of decomposition techniques of scheelite by hydrometallurgical process,the advantages and disadvantages of several decomposition techniques,such as decomposition with hydrochloric acid,soda sintering,pressure boiling of soda,decomposition with sodium hydroxide,decomposition with fluorine salt,decomposition with mixture of sulfuric acid and phosphoric acid,as well as lime sintering conversion followed by decomposition with ammonium bicarbonate were all analyzed.It is concluded that those three techniques,including decomposition with fluorine salt,pressure boiling of soda and decomposition with mixture of sulfuric acid and phosphoric acid,will gradually become the mainstream decomposition techniques for scheelite.