1. Department of Chemical Engineering, Federal University of Rio Grande do Sul (UFRGS), Rua Engenheiro Luiz Englert, s/n
Campus Central, Porto Alegre, Rio Grande do Sul 90040-040, Brazil
2. Iron and Steelmaking Laboratory (LASID), University of Rio Grande do Sul, Avenida Bento Gonçalves, Porto Alegre, Rio Grande do Sul 9500, Brazil