Reduction of Corrosion of Tundish Stopper Rod Caused by Covering Powder

The tundish is a reservoir and distributor for liquid steel from the ladle into the molds. Covering powders used in the tundish can promote stopper rod corrosion. The objective of this work is to investigate the thermodynamic properties of a Ca-aluminate covering powder. Using computational thermodynamics, conclusions are obtained on the behavior of the covering powder during the industrial process since there are information on nature, amount and composition of the phases at steelmaking temperatures. It was concluded that an easy-to-implement solution, in the industrial context, could be implemented to reduce corrosion of the stopper rod caused by covering powder.

José Augusto Cardoso Ferreira | HWI, A Member of Calderys
 

Edson Maranhão | HWI, A Member of Calderys
 

Thaísa F. Silva | Ternium Brasil
 

Giovani Apolinário | Ternium Brasil
 

Wagner Bielefeldt | Federal University of Rio Grande do Sul
 

Jeferson Klug | Federal University of Ceará