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