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›› 2010, Vol. 10 ›› Issue (6): 1104-1109.

• 反应与分离 • 上一篇    下一篇

硫酸铁氧化浸出脱除煤中硫研究

吴复忠 金会心 焦东伟   

  1. 贵州大学材料与冶金学院 贵州大学材料与冶金学院 贵州大学材料与冶金学院
  • 收稿日期:2011-01-11 修回日期:1900-01-01 出版日期:2010-12-20 发布日期:2010-12-20
  • 通讯作者: 吴复忠

Study on Desulfurization of Coal by Oxidizing Leaching with Ferric Sulfate

WU Fu-zhong JIN Hui-xin JIAO Dong-wei   

  1. College of Materials and Metallurgy, Guizhou University, School of Material and Metallurgy,Guizhou university School of Material and Metallurgy,Guizhou university
  • Received:2011-01-11 Revised:1900-01-01 Online:2010-12-20 Published:2010-12-20
  • Contact: WU Fu-zhong

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摘要： 采用硫酸铁溶液氧化浸出法脱除贵州某矿煤中的硫，考察了硫酸铁溶液浓度、浸出温度、浸出时间及液固比对脱硫率的影响. 实验结果表明，在浸出温度100℃，浸出时间8 h，硫酸铁溶液浓度1 mol/L，液固比10:1时，能有效脱除煤中硫份，脱硫率达到48.56%. 脱硫前后煤样的对比分析结果表明，硫酸铁氧化浸出煤中硫的同时，不仅没有破坏煤中的有效成分，而且提高了煤样的热值，提升了煤的质量.

关键词: 煤, 脱硫, 硫酸铁, 氧化浸出

Abstract: In order to remove sulfur of the coal mined from Guizhou Province, aqueous ferric sulfate oxidizing leaching method was used. The effects of ferric sulfate concentration, leaching temperature, leaching time and liquid/solid ratio on the desulfurization efficiency were investigated. The results indicated that 48.44% sulfur was removed under the conditions of leaching temperature at 100℃, leaching time 8 h, ferric sulfate concentration 1 mol/L and liquid/solid ratio 10:1. Difference between original and desulfurized coal samples was also investigated. The results showed that active components of the coal sample were not destroyed when sulfur was removed. Moreover, the caloric value and quality of the coal sample were improved after desulfurization.

Key words: coal, desulfurization, ferric sulfate, oxidizing leaching