Design Research on Comprehensive Utilization of Oxygen Pressure Leaching Residue
Based on the analysis of oxygen pressure leaching slag materials in a domestic factory,combined with the existing production system,the process of producing high lead slag by using Osmet top-blown smelting furnace with lead concentrate,producing crude lead by reducing smelting in oxygen-enriched side-blown furnace,and recovering valuable metals such as zinc by fuming smelting of smelting slag is proposed.The relevant production technical indicators have reached the advanced level.Using this process to treat oxygen pressure leaching residue,various valuable metals such as lead,zinc and silver in the residue can be comprehensively recovered,and the high concentration SO2 flue gas produced can be directly acidified.The elemental sulfur in the oxygen pressure leaching residue can replace part of the fuel coal and reduce the production energy consumption.It not only solves the environmental risk caused by the stockpiling of oxygen pressure leaching residue,but also improves the efficiency of metal recovery,which is conducive to increasing the economic benefits of enterprises.