CAUSTIC DECOMPOSITION OF SCHEELITE AND SCHEELITE－WOLFRAMITE CONCENTRATES THROUGH MECHANICAL ACTIVATION
来源期刊：中南大学学报(英文版)1995年第2期
论文作者：Li Honggui Liu Maosheng Sun Peimei Li Yunjion
文章页码：16 - 20
Key words：mechanical activation; scheelite concentrate; caustic decomposition
Abstract: Based on physicochemical study of the reaction between scheelite and NaOH, a new decomposition process for scheelite and scheelitewolframite concentrate, i. e., mechenically activating caustic decomposition has been developed, and it has been successfully used on a commercial scale in 11 tungsten plants in our country. Industrial practice has shown that a tungsten recovery higher than 98% for sheelite concentrate and 99% for scheelite-wolframite mixed concentrate is obtained, under the conditions of NaOH/WO3 mole ratio of 3. 6～4. 8, 160-170 C,and it is suitable to treat almost any sort of tungsten ore concentrates, including low grade complex concentrate, and it is more effective than the traditional soda ash digestion process.
