| 一水硬铝石型高硫铝土矿脱硫研究进展 |
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| 引用本文： | 郑立聪,谢克强,刘战伟,马文会.一水硬铝石型高硫铝土矿脱硫研究进展[J].材料导报,2017,31(5):84-93, 105. |
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| 作者姓名： | 郑立聪 谢克强 刘战伟 马文会 |
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| 作者单位： | 昆明理工大学真空冶金国家工程实验室/复杂有色金属资源清洁利用国家重点实验室,昆明650093;昆明理工大学云南省有色金属真空冶金重点实验室/云南省高校硅冶金与硅材料工程研究中心,昆明650093 |
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| 基金项目： | 国家自然科学基金(51404121)；人才基金培育项目(KKSY201452041) |
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| 摘 要： | 一水硬铝石型高硫铝土矿脱硫成为解决我国优质铝土矿资源短缺的热点问题。对前人研究的高硫矿成分、物相、形貌进行了总结,全面阐述了拜耳法生产氧化铝过程中硫、铁的行为和危害,详细介绍了国内外研究脱硫的机理、方法及其效果。提出"三步走战略",即先浮选,后氧化,再沉淀三道工序进行脱硫,且对高硫铝土矿中所含不同成分的硫应采用不同方法脱硫。对含黄铁矿最高的高硫铝土矿可以通过先进行浮选工艺,再对含黄铁矿较高的铝土矿精矿在溶出过程中氧化S2-和溶出后在铝酸钠溶液中添加钡盐沉淀SO_4~(2-)的方法协同达到脱硫的目的。最后展望了高硫铝土矿脱硫未来的研究方向。
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| 关 键 词： | 高硫铝土矿 黄铁矿 浮选 氧化 沉淀 脱硫 |
Review on Desulfurization of High-sulfur Bauxite |
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| ZHENG Licong,XIE Keqiang,LIU Zhanwei and MA Wenhui.Review on Desulfurization of High-sulfur Bauxite[J].Materials Review,2017,31(5):84-93, 105. |
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| Authors: | ZHENG Licong XIE Keqiang LIU Zhanwei and MA Wenhui |
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| Affiliation: | The National Engineering Laboratory for Vacuum Metallurgy and State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093;Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province and Engineering Research Center for Silicon Metallurgy and Silicon Materials of Yunnan Provincial Universities,Kunming University of Science and Technology,Kunming 650093,The National Engineering Laboratory for Vacuum Metallurgy and State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093;Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province and Engineering Research Center for Silicon Metallurgy and Silicon Materials of Yunnan Provincial Universities,Kunming University of Science and Technology,Kunming 650093,The National Engineering Laboratory for Vacuum Metallurgy and State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093;Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province and Engineering Research Center for Silicon Metallurgy and Silicon Materials of Yunnan Provincial Universities,Kunming University of Science and Technology,Kunming 650093 and The National Engineering Laboratory for Vacuum Metallurgy and State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093;Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province and Engineering Research Center for Silicon Metallurgy and Silicon Materials of Yunnan Provincial Universities,Kunming University of Science and Technology,Kunming 650093 |
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| Abstract: | The desulfurization of high-sulfur bauxite has become the hot issue for solving the shortage of high-quality bauxite resources in our country.In this paper,the composition,phase and morphology of high-sulfur bauxite are summarized.The behavior and harmfulness of sulfur and iron in high-sulfur bauxite during the process of producing alumina by the Bayer method is also described comprehensively.The research on the mechanism,methods and effects of desulfurization are introduced in detail.The threestep strategy (flotation,oxidation and precipitation) are proposed to desulfurization of high-sulfur bauxite.At first,the sulfur in the high-sulfur bauxite with highest pyrite can be removed by the flotation process,and then concentrate the bauxite with higher pyrite and sulfur can be removed through S2-oxidation in the dissolution process and SO42--precipitated by adding barium salt.Finally,the prospect of desulfurization of high sulfur bauxite is discussed briefly. |
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| Keywords: | high-sulfur bauxite pyrite flotation oxidation precipitation desulfurization |
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