Abstract:In the process of recycling non-ferrous metals from waste circuit boards, a large amount of smelting slag will be produced. In view of the further safe disposal methods and unclear hazardous characteristics of smelting slag after the implementation of the National Hazardous Waste List (2021 edition), a typical electronic hazardous waste treatment enterprise with oxygen-rich side-blowing melting technology was selected as the research object and 100 samples were collected to test the element types, corrosion and toxicity characteristics. It is concluded that the studied smelting slag is not hazardous waste according to the corresponding standards and can be managed as industrial solid waste. The results are not only helpful for the identification of hazardous characteristics and environmental supervision of smelting slag, but also provide technical guidance for their harmless disposal and resource utilization.