metalslag
Metalslag is a byproduct of metallurgical processes in which impurities are separated from molten metal. It forms when fluxes and gangue minerals combine with molten metal and are separated as a non-metallic layer or dispersed droplets. Slag can be glassy or crystalline in texture, and its composition varies with the ore and processing route. Typical constituents include silica, alumina, lime, and magnesia, with oxides and sulfides of trace metals that may be recovered in some cases.
Common slag types include blast-furnace slag from ironmaking; steelmaking slag from basic oxygen furnace or electric
Applications and recycling: Granulated blast-furnace slag is marketed as a supplementary cementitious material and can improve
Environmental aspects: Slag generally represents a stable waste when properly managed, but leaching of trace metals