Abstract:In the existing flue gas treatment system of side blown furnace in a copper smelter of East China, the inlet temperature of bag dust collector is too high, and the side blown furnace is still under positive pressure after the exhaust fan reaches the rated speed. There are serious dust accumulation problems in the outlet pipe section of side blown furnace and the radiation part of the waste heat boiler. Through the actual measurement and single factor analysis, the suitable operation conditions of the flue gas treatment system of side blown furnace are found out, which can provide reference for solving other similar process problems.