Experimental research on micro-emulsion collector on coal flotation

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.