NOUFERROUS METALLURGICAL EQUIPMENT

The temperature and volume of flue gas produced by copper smelting anode furnace fluctuate greatly, resulting in drastic changes in heat capacity, which requires cooling before entering the subsequent dust collection system. Based on this feature, this paper introduces a dual fluid compressed air spray cooling technology. The dusty high-temperature flue gas enters from the top of the cooling tower and contacts with the fully atomized droplets downstream. The droplets are vaporized rapidly during the travel of the high-temperature flue gas in the tower, and the sensible heat is replaced by the latent heat of water evaporation. After the flue gas is quenched, it flows out from the bottom through the exhaust port. The system is equipped with an automatic pump station to provide water and compressed air with a certain pressure for the spray gun. According to the flue gas inlet and outlet temperature of the cooling tower, water spray flow, pressure and other signals, real-time calculation and control are carried out to ensure that the flue gas outlet temperature is stable within the set target range. The actual production verification of anode furnace in the copper smelting technology upgrading and transformation project of Baiyin Nonferrous Metals Group shows that the overall layout is reasonable, the process flow is smooth, the temperature regulation range is large, there is no water leakage at the bottom of the cooling tower, and various technical indicators meet the design requirements.