Study on Ladle Baking Process with Oxygen-fuel Combustion

Oxygen-fuel combustion instead of air combustion for ladle baking has gradually become a new technology for ladle heating in the iron and steel industry. The optimization of oxygen-fuel burner structure is of great significance for the wide application of oxygen-fuel combustion technology in iron and steel enterprises. In this study, a three-dimensional model of 100 ton ladle was established by using the numerical simulation software FLUENT 21.0. The fluid flow, combustion and heat transfer in the process of ladle oxygen baking were studied. The ladle baking effects of four different gas pipeline diameters and four different gas nozzle spacing were compared. The results show that when the gas flow rate and oxygen flow rate are about 1:1, the roasting effect is the best. When the distance between fuel gas nozzle and oxygen nozzle is 150 mm~175 mm, the baking effect of ladle bottom and wall is better. When the diameter of gas pipe is 150 mm, the diameter of oxygen pipe is 60mm, and the distance between gas nozzle and oxygen nozzle is 150mm, the baking efficiency can reach 24.33%. The relevant research provides the basis for the application of oxygen-fuel combustion technology in 100t ladle.