China Nonferrous Metallurgy

In recent years, the amount of industrial hazardous waste produced in China grows year by year, but the existing hazardous waste treatment equipment is backward, creating a huge gap between throughput and production. The side-blowing submerged combustion bath smelting technology (SSC for short) independently developed by ENFI has been successfully applied to production on an industrial scale, and currently the application of this technology is expanding to such fields as treatment of anode slime, copper dross and electronic waste. Due to major changes in components of hazardous waste, the originally designed SSC furnace is difficult to adapt to this working condition. Hence, ENFI has improved it and named the new version “comprehensive recovery and treatment furnace”. This paper carries out an analysis of advantages and disadvantages of SSC technology, elaborates on features of comprehensive recovery and treatment furnace, and introduces the application of this furnace. Practices show that comprehensive recovery and treatment furnace can not only treat hazardous waste, but also leverage heat in industrial hazardous waste and recover valuable metals such as copper, which accords with the philosophy of green metallurgy and enjoys a bright market prospect.