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Slag Capacity on Inclusion Removal: An Experimental and Thermodynamic Investigation
(
Room
410
)
06 May 19
3:00 PM
-
3:30 PM
Tracks:
Ladle & Secondary Refining
Speaker(s):
Vinicius Cardoso da Rocha, Federal University of Rio Grande do Sul;
Pedro Cunha Alves, Federal University of Rio Grande do Sul;
Julio Aníbal Morales Pereira, Federal University of Rio Grande do Sul;
Wagner Viana Bielefeldt, Universidade Federal do Rio Grande do Sul;
Antônio Cezar Faria Vilela, Federal University of Rio Grande do Sul
The capacity of steelmaking slags on inclusion removal from liquid steel was investigated. Laboratory experiments with slag and steel samples (with inclusion population known) were performed using a vertical electric resistance furnace at 1,873 K. After the melting experiments, slag and steel samples were separated and analyzed regarding their chemical composition and inclusion population evolution. The capacity of slags on inclusion removal was evaluated based on the thermodynamics (solid and liquid phases proportion/composition of the slags, effective viscosity) calculated using FactSage v7.2. Results indicated that changes in the composition of slags presented effects on the steel cleanliness.
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