Continuous Hot Metal Pretreatment by Top Injection Method at Blast Furnace Runner

Abstract

A new continuous hot metal pretreatment by top injection method which is carried out at the blast furnace runner is examined. Emphasis is placed on the method of charging the reagents for desiliconization and dephosphorization. It is found that not only desiliconization but also dephosphorization can be accomplished at the charge point by employing the top injection method. The reactions are analyzed in terms of the kinetics and thermodynamic equilibria.