Abstract:The temperature, pressure, flue gas composition and other parameters at key positions of the converter were obtained through comprehensive thermal test on a copper dross converter, and the energy utilization and energy-mass flow path of the converter were analyzed. The oxygen-enriched combustion process of natural gas in the furnace was simulated by numerical simulation technology based on thermal test data. The results show that the thermal efficiency of the copper dross converter is 19.96%, and the main reasons for the low thermal efficiency of the converter are excessive air leakage and excessive heat dissipation from the wall. In addition, the excessive amount of pulverized coal used in the reaction heat theory calculation is also considerable. Based on the thermal diagnosis results, the following energy-saving optimization suggestions are proposed: adjust the amount of pulverized coal to achieve the optimal dosing; take insulation measures to reduce surface heat dissipation; enhance the tightness of the converter to reduce air leakage; adjust the layout of burners to enhance heat exchange between flue gas and melt.