ISSN 2594-357X
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Abstract
Tests were carried out under isothermal and non-isothermal condition in a muffle furnace, aiming to assess the reduction and melting of a self-reducing blend of mill scale and petroleum coke (85%-15% in weight). The products obtained were analyzed by mass loss and wet analysis. Further investigations for the products from the non-isothermal condition were done by XRD, nude eye inspection and carbon analyzer. It was observed that mass loss fraction and metallization degree are directly related and both increase with time and temperature. In the non-isothermal maximum mass loss was achieved in 8 minutes, reaching metallization degrees above 90%. It was observed that the reduction of iron oxide occurs mainly in solid state and the smelting of the samples is directly related to the iron carburization process. Thus, the use of self-reducing mixtures shows a possible way to recycle mill scale.
Tests were carried out under isothermal and non-isothermal condition in a muffle furnace, aiming to assess the reduction and melting of a self-reducing blend of mill scale and petroleum coke (85%-15% in weight). The products obtained were analyzed by mass loss and wet analysis. Further investigations for the products from the non-isothermal condition were done by XRD, nude eye inspection and carbon analyzer. It was observed that mass loss fraction and metallization degree are directly related and both increase with time and temperature. In the non-isothermal maximum mass loss was achieved in 8 minutes, reaching metallization degrees above 90%. It was observed that the reduction of iron oxide occurs mainly in solid state and the smelting of the samples is directly related to the iron carburization process. Thus, the use of self-reducing mixtures shows a possible way to recycle mill scale.
Keywords
Mil scale; Self-reduction; Iron carburization.
Mil scale; Self-reduction; Iron carburization.
How to cite
Vilela., Antônio Cezar Faria; Flores, Bruno Deves; Flores, Ismael Vemdrame; Bagatini, Maurício Covcevich; Osório, Eduardo.
STUDY ON REDUCING AND MELTING BEHAVIOR OF MILL
SCALE/PETROLEUM COKE BLEND,
p. 1511-1521.
In: 42nd ABM Ironmaking Seminar / 13rd ABM Iron Ore Symposium / 6th International Congress on the Science and Technology of Ironmaking,
Rio de Jabeiro,
2012.
ISSN: 2594-357X, DOI 10.5151/2594-357X-22254
