Steel is 100 percent recyclable. Each year, nearly 68.7 percent of all steel scrap is North America is recycled. Steel does not contribute to the growth of landfills. Steel framed structures stay straight and true and do not expand and contract with humidity and temperature changes. This means that door and windows openings framed with steel remain stable and this saves on energy costs. Cold-for...

Scrap is dumped into the furnace vessel, followed by the hot metal from the blast furnace. A lance is lowered from above, through which blows a high-pressure stream of oxygen to cause chemical reactions that separate impurities as fumes or slag. Once refined, the liquid steel and slag are poured into separate containers.