Abstract: The combustibles in gasified fine slag are recovered by carrier flotation. As a kind of solid waste, gasification fine slag has small particles and porous surface, which can absorb a large amount of reagent, so there are few economical and effective recovery methods. In this experiment, the dosage of drug can be effectively reduced by carrier flotation, about 50% of the drug dose can be reduced. Through the measurement of contact Angle, the analysis of scanning electron microscope and the measurement of Zeta potential, the properties of gasified fine slag and gasified fine slag with carrier were studied, and the floatability of gasified fine slag with carrier was studied.The carrier flotation method can reduce the ash content of gasified fine slag from 68% to 25.62%, while the ash content of tailings can reach 96.43%, the recovery rate of combustibles is as high as 94.55%, and the calorific value of concentrate can reach 6010 KCal/kg.