Abstract:In the process of flue gas purification of baking furnace in aluminum carbon enterprises, a large amount of waste tar condensed by electric tar-catcher is a kind of hazardous waste, and its disposal is an urgent environmental protection problem to be solved by the state and enterprises. A method and idea of using waste tar to replace part of modified asphalt for the production of prebaked anode was presented. The changes of physical and chemical indexes of waste tar after heat treatment, the experimental study and performance test of pre-baked anode prepared by waste tar blending instead of part of modified asphalt were studied in detail. The results show that the optimum heat treatment condition for waste tar is 220 ℃ for 12 h, and the maximum blending ratio for the preparation of prebaked anodes from waste tar is 15%. This method not only reduces the raw material cost of prebaked anode production, but also realizes the resource utilization of waste tar, which is conducive to reducing the environmental risk and economic burden of carbon enterprises.