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选择以重庆地区高硫煤为研究对象，研究细粒煤脱硫的抑制剂和工艺．结果发现在适当改变粒度组成下，对含硫１．４０％的南桐入浮煤样，添加巯基乙酸２００ｇ／ｔ，可获得精煤硫分小于１．２％，产率为５７．９１％的良好指标．黄铁矿硫脱除率为６３％，明显高于现场指标．采用量子化学计算、ＥＳＣＡ测试、ξ－电位分析等结果，探讨了煤系黄铁矿的抑制机理，得出浮选过程抑制黄铁矿的有效途径在于添加药剂使体系充分分散，减少黄铁矿与煤的静电吸附和降低煤系黄铁矿的含碳量．
Select high-sulfur coal in Chongqing as the research object, the study of fine coal desulfurization inhibitors and processes. The results showed that under the appropriate particle size composition, 1.40% Nantong into the floating coal samples, the addition of thioglycolic acid 200g / t, available coal sulfur content of less than 1.2%, the yield was 57.91% Good indicator. Pyrite sulfur removal rate of 63%, significantly higher than the field indicators. Based on the results of quantum chemical calculation, ESCA test and ξ-potential analysis, the inhibition mechanism of coal pyrite is discussed. It is concluded that the effective way to suppress pyrite in flotation process is to add the agent to fully disperse the system and reduce the pyrite Electrostatic adsorption with coal and reduction of carbon content in coal pyrite.