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| Dissolution Behavior of Muscovite in Mixed Solution of Sulfuric Acid and Hydrofluoric Acid |
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Received:September 04, 2016
Revised:September 12, 2016
Accepted:September 13, 2016
Published Online:November 17, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.12.010 |
| KeyWord:muscovite; dissolution; hydrofluoric acid; crystal structure |
| Author | Institution |
| He Dongsheng |
武汉工程大学资源与土木工程学院 湖北武汉 |
| Li Qiaoshuang |
武汉工程大学资源与土木工程学院 湖北武汉 |
| Wang Xianchen |
武汉工程大学资源与土木工程学院 湖北武汉 |
| Liu Xing |
武汉工程大学资源与土木工程学院 湖北武汉 |
| Qin Fang |
武汉工程大学资源与土木工程学院 湖北武汉 |
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| Abstract: |
| Dissolution behavior of Al, Si, and K was studied by dissolution experiment in mixed solution of sulfuric acid and hydrofluoric acid. Crystal structures variation of muscovite were investigated with FTIR, XRD, SEM, and other means. The results indicate that, compared with single sulfuric acid solution system, dissolution rates of Al, Si and K in mixed solution of sulfuric acid and hydrofluoric acid increase by 23.12, 44.51, and 11.00 percentage point, respectively. That promotes hydrofluoric acid can effectively destroy Si-O tetrahedron and Al-O octahedron of muscovite. With dissolution time prolongs, -OH, Si(AlIV)-O-(Al), and Si-O-Si(AlIV) gradually be destroyed. Firstly destroyed lattice plane is (002), (004), and (131). |
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