Electrochemical reduction of pyrite in aqueous NaCI solution

W. Zhao; H. Zhu; Z.-M. Zong

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Electrochemical reduction of pyrite in aqueous NaCI solution

机译：NaCl水溶液中黄铁矿的电化学还原

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Optimum conditions for pyrite removal from a high-sulfur coal by electrochemical reduction during flotation are determined by orthogonal experiments. The electrochemical reduction process of pure pyrite is examined with XRD, electrochemical and chemical analysis. The results show that the electrochemical reduction products of pyrite are FeS and S~(2-). During this process, the reactions at cathode are: FeS_2 + 2e- > FeS + S~(2-) and 2H~+ +2e- >H_2. The corresponding electrode potentials and kinetic equation are determined. The conversion of hydrophobic pyrite to hydrophilic FeS and S~(2-) by electrochemical reduction is beneficial to desulfurization from coal in floatation process.

机译：通过正交试验确定了浮选过程中通过电化学还原从高硫煤中去除黄铁矿的最佳条件。用XRD，电化学和化学分析方法研究了纯黄铁矿的电化学还原过程。结果表明，黄铁矿的电化学还原产物为FeS和S〜（2-）。在此过程中，阴极处的反应为：FeS_2 + 2e-> FeS + S〜（2-）和2H〜+ + 2e-> H_2。确定相应的电极电势和动力学方程。通过电化学还原将疏水性黄铁矿转化为亲水性FeS和S〜（2-），有利于浮选过程中煤的脱硫。

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来源
《Fuel》 |2005年第3期|p.235-238|共4页
作者
W. Zhao; H. Zhu; Z.-M. Zong;
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作者单位

School of Chemical Engineering, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类燃料化学工业（总论）;
关键词
Coal; Pyrite; Electrochemical reduction; Desulfurization; Kinetics;

机译：煤;硫铁矿;电化学还原;脱硫;动力学;

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8. Transformation of Carbon Tetrachloride by Pyrite in Aqueous Solution [R] . Kriegman-King, M. R., Reinhard, M. 1994

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Electrochemical reduction of pyrite in aqueous NaCI solution

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