Sustainable Mining and Metallurgy

With the development of enterprise and the increase in market demand, the complex gold-copper concentrate processing capacity of the oxygen-enriched bottom-blowing smelting system of a certain company gradually failed to meet the market demand, influencing the economic benefits of the system. Therefore, expansion and technical innovation of the system are needed. In this paper, the expansion and innovation of the oxygen-enriched bottom-blowing smelting system for processing complex gold-copper concentrate were introduced from the aspects of bottom-blowing smelting system, sulfuric acid system, electrolysis system, off-gas treatment, etc. After innovation, the throughput of the bottom-blowing smelting system was improved from 40t/h to 100t/h; the sulfuric acid production capacity was increased from 250000t/a to 450000t/a; the cathode copper production capacity was raised from 50000t/a to 200000t/a; meanwhile, the staff's working environment was improved, and the economic benefits of the system were enhanced greatly.