Patent ID: 6267798
Filing Date: 2001-07-31
Classification: C21C,Y02P

Abstract:
A slag composition comprised of steelmaking slag and from about 0.5 to about 10 percent of reducing agent by total weight of steelmaking slag and reducing agent, wherein:(a) said steelmaking slag is comprised of from about 25 to about 55 weight percent of calcium oxide, from about 10 to about 50 weight percent of ferrous oxide, from about 5 to about 20 weight percent of magnesium oxide, from about 5 to about 20 weight percent of silicon oxide, and from about 0.5 to about 8 weight percent of manganese oxide, and(b) said reducing agent is comprised of calcium carbide and elemental aluminum, wherein:1. from about 5 to about 80 weight percent of said reducing agent is comprised of said calcium carbide, and2. from about 10 to about 50 weight percent of said reducing agent is comprised of said elemental aluminum.