Recovery of iron and removal of hazardous elements from waste copper slag via a novel aluminothermic smelting reduction (ASR) process

A novel aluminothermic smelting reduction (ASR) process was investigated for cleaning waste copper slag; this process is not only able to recover valuable iron, but also eliminates hazardous elements from the end-of-life slag product. The effect of adding Al on the reduction of iron oxide and subsequent iron recovery from waste copper slag at 1773 K was investigated by considering the thermophysical properties of the slag. The content of FeO and...