摘要
研究了电解还原法和金属腐蚀电偶法对煤和黄铁矿表面改性的机理 .应用红外光谱和 X射线衍射分析可知 ,煤和煤系黄铁矿经不同电化学法预处理后 ,表面性能向相反的方向改性 ,有利于两者的浮选分离 .在一定的电化学条件下 ,黄铁矿表面生成亲水性的物质 ,可浮性降低 ,煤表面的含氧官能团减少 ,疏水性增强 .大量研究结果表明 :电化学强化高硫煤浮选脱硫方法能有效脱除精煤中的硫分 。
The modification mechanism of coal and coal-pyrite surface was studied after treatment with electrolysis reduction and metal corrosion interaction. It was known that by using infrared spectra and X-ray diffraction analyses, surface modification of coal and coal-pyrite takes different direction, which is beneficial to desulfurization of high sulfur coal flotation after pretreatment with different electrochemical methods. Under certain electrochemical operation conditions, hydrophilic substances are produced on pyrite surface and its floatability lowered. At the same time, the oxygen-containing functional groups on coal surface reduced and the floatability of coal improved. A large number of researches show that the method on electrochemical enhancing desulfurization of high sulfur coal in flotation could effectively remove sulfur in clean coal and improve product quality.
出处
《煤炭转化》
CAS
CSCD
北大核心
2003年第2期60-63,共4页
Coal Conversion
基金
国家自然科学基金资助项目 ( 5 0 1740 5 4)
