Thermodynamic simulation analysis of copper anode furnace refining process based on MetCal software
Based on the thermodynamic simulation model and system of copper anode furnace refining process,a typical anode furnace refining production condition was calculated to verify the feasibility of the thermodynamic analysis of the model,and then the effects of process parameters such as gas-to-material ratio(RGF),quartz flux rate(RFlux)and refining temperature(t)on product composition and impurity distribution behavior were investigated.The results show that increasing RGF and RFlux can change the composition of refining slag and improve the removal effect of impurities into slag to a certain extent.However,due to the small amount of refining slag,the actual removal rate of other impurity elements except Co and Cr does not change much.Increasing the temperature has little effect on the product composition,but it will lead to a decrease in the removal of impurities.Based on the influence of comprehensive process parameters on the anode refining process,the optimum process parameters are RGF=22 m3/t,RFlux=0.16%,t=1200℃.Under this condition,the Cu grade,S content and O content copper liquid are about 99.39%,0.0065%and 0.17%,respectively.
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