期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 651, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2022.129773
关键词
Vanadium extraction; Black shale; Thermal activation; Lattice release
资金
- National Natural Science Foundation of China
- China Postdoctoral Science Founda- tion
- [52104311]
- [2021M692487]
The study revealed the impact of thermal activation on the lattice of vanadium-bearing muscovite, and analyzed the differences in lattice dissolution and vanadium migration through quantum chemical simulations.
With the increasing demand for vanadium, the extraction technology of vanadium from strategic black shale has been widely valued. Vanadium mainly exists in muscovite of shale, and the extraction of vanadium requires the consumption of a large amount of acid. In industry, thermal activation is usually used to promote the dissolution of vanadium from muscovite. But the enhancing effect of thermal activation for releasing vanadium from lattice is unclear. In this study, the phase transition of black shale after thermal activation was described. Then the difference in lattice dissolution and vanadium migration were analyzed by quantum chemical simulations. From the atomic level, thermal activation caused a lattice expansion of vanadium-bearing muscovite (VM) through dehydroxylation reaction. Moreover, thermal activation can promote the replacement of K+ by H+, the removal of structural oxygen of tetrahedron and the coordination reaction of F- with central vanadium of octahedron in the acid leaching process.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据