Otro
Corrosion behavior in graphite refractories impregnated with ZrO 2 and CeO 2 carrying solutions
Registro en:
2nd International Meeting on Ironmaking and 1st International Symposium on Iron Ore and Parallel Event- 5th Japan-Brazil Symposium on Dust Processing-Energy-Environment on Metallurgical Industries, v. 1, p. 133-144.
2-s2.0-33644974572
Autor
Vernilli Jr., Fernando
Justus, Sérgio Murilo
Silva, Sidiney Nascimento
Mazine, Alex
Baldo, João Batista
Longo, Elson
Varela, José Arana
Resumen
This paper investigates corrosion behavior in graphite refractory hot metal impregnated with ZrO 2 and CeO 2 carrying solutions used in Blast Furnace hearth, consisting of 50% graphite and 50% anthracite. Corrosions tests were carried out by means of finger test method in an induction furnace, using bar-shaped 30×30×280 mm test specimens and hot metal from CSN#2 Blast Furnace runner. The temperature chosen for this test was 1520°C and sixty-minute isotherm. Upon test completion, test specimens were characterized by their dimensional variation, X-ray diffractometry and Scanning Electronic Microscopy (SEM).