Research Progress of Electrolytic Aluminum Overhaul Slag Disposal
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摘要:
大修渣作为电解铝行业的主要固体废弃物，含有大量的危害物质，如何对其无害化处理并高效回收其中有价值物质，是近些年铝行业亟待解决的难题。本文分析总结了大修渣的成分、危害及目前国内外电解铝大修渣处置的发展状况，并指出了我国电解铝行业危险废物处置的发展方向。
Abstract:As the main solid waste of the electrolytic aluminum industry, overhaul slag contains a large amount of hazardous substances, and how to treat it harmlessly and efficiently recover the valuable substances in it has become an urgent problem in the aluminum industry in recent years. This article analyzes and summarizes the composition and hazards of the overhaul slag and the current development status of domestic and international electrolytic aluminum overhaul slag disposal, and points out the development direction of hazardous waste disposal in China's electrolytic aluminum industry.
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Key words:
- Electrolytic aluminum /
- Overhaul slag /
- Harmlessness /
- Resource utilization
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表 1 国内外大修渣部分火法无害化处置技术
Table 1. Partial fire harmless disposal technology of overhaul slag at home and abroad
公司名称 工艺名称 所用设备 氟化物去向 氰化物去向 Alcoa SYNTHETIC SAND 回转窑 HF、AlF3 N2、CO2 Comalco Aluminum Limited COMTOR TORBED CaF2 N2、CO2 中国铝业公司 ______ 回转窑 CaF2 N2、CO2 美国铝业公司 Ausmelt 水泥窑 AlF3 N2、CO2 威斯顿铝业公司 _______ 回转窑 CaF2、 AlF3 N2、CO2 
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