Surface Modification Mechanism of Fine Coal by Electrochemical Methods

ZHU Hong; WANG Fang-hui; WANG Dian-zuo; OU Ze-shen

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Surface Modification Mechanism of Fine Coal by Electrochemical Methods

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In order to reveal the surface modification mechanism of fine coal by electrochemical methods, the structural changes of the coal surface before and after electrochemical modification were investigated by Fourier Transform In- frared Spectra (FTIR) and Raman Spectra. The results show that under certain electrochemical conditions, the oxy- gen-containing functional group in the coal structure and the oxygen content of absorption could be reduced and the floatability of coal improved. At the same time, the sulfur in the coal was reduced to the hydrophilic S2– which could be separated easily from coal. Thus electrochemical modification methods could be used to change the structure and func- tional group on the coal surface and to enhance the floatability of coal.

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《矿业科学技术学报：英文版》 |2006年第2期|180-183|共4页
作者
ZHU Hong; WANG Fang-hui; WANG Dian-zuo; OU Ze-shen;
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作者单位

School of Science;

Beijing Jiaotong University;

Beijing 100044;

China;

Beijing General Research for Non-Ferrous Metals;

Beijing 100088;

China;

School of Chemical Engineering and Environment;

China University of Mining ＆ Technology;

Xuzhou;

Jiangsu 221008;

China;

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原文格式 PDF
正文语种 chi
中图分类脱硫与固硫;
关键词
粉煤; 电化学浮选; 改性机制; FTIR; 拉曼光谱; 表面改性;

机译：细粉煤;电化学改性;改性机理;FTIR;拉曼光谱;

Surface Modification Mechanism of Fine Coal by Electrochemical Methods

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