研究了几种电化学法对煤表面改性反应的机理 .应用红外光谱 (FTIR)和拉曼光谱(Raman)分析表明 ,经电化学方法改性前后煤的表面结构发生变化 .在一定的电化学条件下 ,煤表面的含氧官能团减少 ,吸附氧的含量也减少 ,从而改善了煤的可浮性 ,与此同时 ,煤中所含的硫被还原为亲水性的S2 -,与煤分离 ,达到浮选脱硫的目的 The mechanism of several electrochemical reactions on coal surface modification was studied.The FTIR and Raman analysis showed that the surface structure of coal changed before and after modification by electrochemical method.At the same time, Under chemical conditions, the oxygen-containing functional groups on the coal surface are reduced and the content of adsorbed oxygen is also reduced, thereby improving the buoyancy of the coal. At the same time, the sulfur contained in the coal is reduced to a hydrophilic S2-, Separation, to achieve the purpose of flotation desulfurization