Abstract:Aiming at the difficult problem that the characteristic change of copper flash smelting process with the addition of oxide ore is unknown, the multi-phase equilibrium thermodynamic model and calculation system of copper flash melting process were constructed to investigate the influence of copper oxide concentrate addition rate and component content on the main technical indicators, product component content and process heat control. The results show that proper addition of copper oxide concentrate can effectively improve the copper matte grade and reduce the formation of high melting point slag, but excessive addition will lead to increased energy consumption and deterioration of furnace condition. After comprehensive analysis, it is recommended to control the addition rate of about 8%, while the furnace added copper oxide concentrate component content control in the appropriate range, such as Cu grade higher than 25%, FeO content greater than 5%, S content less than 0.9%, and SiO2 content less than 30%, so as to ensure good product quality and main technical indicators.