The energy saved by recycling these materials would power 18 million homes annually.
Steel manufacturers continue to explore opportunities for beneficial reuse in their processes.
Previously considered waste materials, these materials now are recognized as having beneficial reuse. Slag is the fused product formed by the action of flux upon metallic and other inorganic impurities removed during the steel melting process. The impurities are drained from the furnace as slag. Refractory is the primary material used to line, insulate and protect the ladle and other equipment from the extreme temperatures used to melt scrap steel. The refractory has a limited life and loses its beneficial properties after being exposed to the intense furnace heat.