煤泥微乳捕收剂浮选性能试验研究

Experimental research on micro- emulsion collector on coal flotation

为了探索自制微乳捕收剂LY的浮选性能,采用山东新汶矿业集团孙村煤矿煤泥样品进行了浮选试验研究,试验结果表明:在微乳捕收剂LY用量为0.6 kg/t时,可以获得精煤产率为60.17%、精煤灰分为10.65%的分选指标;与最佳的柴油分选指标相比,微乳捕收剂LY的精煤产率提高了4.85个百分点,精煤灰分提高了0.83个百分点,并且微乳捕收剂LY的用量比柴油低0.1 kg/t,实际的柴油节省率为73%左右(不考虑表面活性剂)。红外光谱分析表明,微乳捕收剂LY与煤泥作用后,产生了新的—S—O—吸收峰,增大了煤泥表面的疏水面积,从而有利于分选效率的提高,但其分选选择性有待提高。

The flotation test is made with coal slime sample of Shandong Energy Xinwen Mining Group Sunjiacun coal mine in order to research flotation effect of LY micro- emulsion collector. The result shows that the yield and ash of clean coal is up to 60. 17% and 10. 65% respectively when consumption of LY micro- emulsion collector is 0. 6 kg / t; compared to diesel collector at the optimized dosage,the yield and ash of clean coal is increased by 4. 85% and 0. 83% respectively and the consumption is reduced by 0. 1 kg / t,and then actual percentage of saving diesel is around 73% regardless of surfactant.- S- O- absorption peak that will extent hydrophobic area of coal slime surface is produced by micro-emulsion collector interacting with coal slime according to infrared spectroscopy,which can improve separating efficiency but the separating selectivity remains to be improved.