Utilization of blast furnace sludge for the removal of zinc from steelmaking dusts using microwave heating

摘要

Utilization of dusts generated by steelmaking industries prevents the disposal of wastes and enhances the use of secondary raw material. This work aimed to study the simultaneous recycling of steelmaking dust and blast furnace sludge (BFS) by using microwave heating. The possibility of utilizing BFS as a reducing agent to remove zinc from the dusts was studied. Three steelmaking dusts obtained from steel plants in Finland with varying zinc concentrations and zinc-containing phases were studied.