Conversion of molybdenite by a mineral phase reconstruction method and leaching kinetics of its product
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- 作者：Fei Lia ; Xingyu Chena ; Wenjuan Zhanga ; Lihua Hea ; Zhongwei Zhaoa ; b ; zhaozw@csu.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Molybdenite ; Mineral phase reconstruction ; Ternary sulfide ; Kinetics ; Autocatalysis
- 刊名：International Journal of Refractory Metals and Hard Materials
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：62
- 期：part_PA
- 页码：14-20
- 全文大小：1170 K
文摘
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A process of mineral phase reconstruction (MPR) for modify the mineralogical characteristics of molybdenite was explored.
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The MPR product can be leached much faster and more complete than molybdenite under the same conditions.
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The leaching kinetics of MPR product with HNO3 in H2SO4 in solutions was studied.
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A characteristic “S-shaped” trend occurred, an autocatalytic reaction kinetic equation was proposed.
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Based on apparent activation energy and reaction order calculated, the kinetic equation was established.