Thermal Modeling of Casting Ladles: High-Alumina, Dolomite, Magnesite and Magnesia-Graphite Refractories

摘要

The development of secondary metallurgy has introduced severe thermal loading and working conditions in casting ladles. The longer holding times, higher steel temperatures, greater slag attack and thermal cycling associated with secondary metallurgy have promoted the change from bloating fireclay to high-alumina and basic refractory linings. Economical and metallurgical aspects fix the selection of the refractory linings, since they can alter important steelmaking variables, such as the yield of ferroalloy additions, the deoxidation and desulfurization rate mechanism, the content of oxygen in the cast product, etc.