Barium slag powder belongs to hazardous waste management. According to relevant public information, barium slag powder is toxic and belongs to hazardous waste. It has adverse effects on the environment or human health and needs to be managed according to hazardous waste, so the recovery of barium slag powder belongs to hazardous waste management. Hazardous waste has one or more hazardous characteristics, such as corrosiveness, toxicity, flammability, reactivity or infectivity.