Patent ID: 7618582
Filing Date: 2009-11-17
Classification: B22D,C21C,F27B,Y02P,Y10S

Abstract:
1. An apparatus for continuous refining of steel comprising: a melting furnace for melting iron-bearing material, the furnace comprising a heat source, a melting furnace inlet for continuously receiving the iron-bearing material, a melting vessel in communication with said inlet for melting the iron-bearing material and holding molten steel, and a melting furnace outlet for discharging the molten steel continuously from the melting vessel simultaneously with the melting furnace inlet's continuously receiving the iron-bearing material; an oxidizer having a chemically oxidizing environment for oxidizing oxidizable elements in the molten steel including decarburization and dephosphorization, and comprising an oxidizer inlet in direct communication with the melting furnace outlet for continuously receiving the molten steel discharged from the melting furnace outlet, an oxidizing vessel in communication with the oxidizer inlet for holding the molten steel, and an oxidizer outlet for continuously discharging the molten steel from the oxidizer simultaneously with the oxidizer inlet's continuously receiving the molten steel discharged from the melting furnace outlet; and a reducer for deoxidizing and desulfurizing the molten steel, the reducer having a chemically reducing environment and comprising a reducer inlet in direct communication with the oxidizer outlet for continuously receiving the molten steel discharged from the oxidizer outlet, a reducer vessel in communication with the reducer inlet for holding the molten steel, and a reducer outlet for continuously discharging the molten steel from the reducer simultaneously with the reducer inlet's continuously receiving the molten steel discharged from the oxidizer outlet of the oxidizer having the inlet for receiving the molten steel discharged from the melting furnace outlet.