绿色矿冶

Aiming at the technical problems of low smelting efficiency of lead matte complex materials, incomplete separation of Cu and Pb, and low grade of crude copper, a pilot test was carried out using a self developed oxygen enriched side top blown smelting test equipment. The experimental results show that under the condition of temperature 1250℃ and oxygen concentration 60%, lead matte side top blown smelting can produce crude copper in one step. The content of Cu in crude copper reaches 94.03%, the content of Pb is 0.11%, and the removal rates of main impurities Pb, As and Sb are approximately 99%, 90% and 85%, respectively. Using this process, smelting slag+blowing copper can be completed in the same reactor, the smelting cycle is shortened to 24h, and the coal rate is 9.6%. Compared with the traditional process, the smelting efficiency is greatly improved, the operating environment is good, and the energy consumption is low. It has a good application prospect.