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Thesis Advisor柯家骏
Degree Grantor中国科学院研究生院
Other AbstractChina is endowed with abundant tungsten ore resources, mainly wolframite (Fe, Mn)WO4 and scheelite (CaWO4). Usually, the tungsten ores are first separated and concentrated by ore-dressing processes. The tungsten concentrates are then treated by the hydrometallurgy method respectively. Now wolframite is decomposed by aqueous caustic leaching, scheelite is decomposed by high pressure leaching of aqueous sodium carbonite or by hydrochloric acid leaching. However, these processes require longer leaching time and individual tungsten mineral to be treated. On the other hand, there is not a suitable method for treating the mixtures of wolframite and scheelite as well as the middling of scheelite produced by some mines. In order to make efficient utilization of tungsten ore resources and resolve the problems in the traditional leaching processes, a new method of caustic decomposition of tungsten ores in an alternative electric field has been developed. The purpose of this work is to intensify the decomposition process by use of an alternative electric field, and to treat both wolframite and scheelite in the same reactor.
Document Type学位论文
Recommended Citation
GB/T 7714
刘立军. 交变电场中碱分解钨矿的研究[D]. 中国科学院研究生院,1988.
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