| Abstract Scope |
At present, secondary zinc resources are mainly concentrated in smelting dust and smelting secondary slag, including zinc dust in steel factories, zinc oxide fume in lead factories, dust in copper factories, zinc scum, furnace bottom slag and zinc smelting leaching slag. According to different characteristics of the secondary zinc resources, This paper discusses the application of zinc secondary resource recovery technology£¬and points out that the slag phase reorganization, removal of sulfur and nitrogen from flue gas£¬removal fluorine and chlorine from ashes, more metal synthesis recycling, harmless disposal of waste residue are necessary means for comprehensive utilization of secondary zinc resource. The present situation of production and application of thermal metallurgy combined with hydrometallurgy is described emphatically in this paper, so as to realize comprehensive recovery of zinc secondary resources and harmless treatment of waste residue. |