Title

CORROSION BEHAVIOR IN GRAPHITE REFRACTORIES IMPREGNATED WITH ZrO₂ AND CeO₂ CARRYING SOLUTIONS

CORROSION BEHAVIOR IN GRAPHITE REFRACTORIES IMPREGNATED WITH ZrO₂ AND CeO₂ CARRYING SOLUTIONS

Authorship

JR, FERNANDO VERNILLI; JUSTUS, SÉRGIO MURILO; SILVA, SIDNEY NASCIMENTO; MAZINE, ALEX; BALDO, JOÃO BATISTA; LONGO, ELSON; VARELA, JOSÉ ARANA

JR, FERNANDO VERNILLI

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JUSTUS, SÉRGIO MURILO

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SILVA, SIDNEY NASCIMENTO

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MAZINE, ALEX

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BALDO, JOÃO BATISTA

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LONGO, ELSON

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VARELA, JOSÉ ARANA

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DOI

10.5151/2594-357x-34Red-133-144

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Abstract

This paper investigates corrosion behavior in graphite refractory hot metal impregnated with ZrO₂ and CeO₂ carrying solutions used in Blast Furnace hearth, consisting of 50% graphite and 50% anthracite. Corrosion tests were carried out by means of finger test method in an induction furnace, using bar-shaped 30x30x280 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).

This paper investigates corrosion behavior in graphite refractory hot metal impregnated with ZrO₂ and CeO₂ carrying solutions used in Blast Furnace hearth, consisting of 50% graphite and 50% anthracite. Corrosion tests were carried out by means of finger test method in an induction furnace, using bar-shaped 30x30x280 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).

Keywords

Corrosion, Hot Metal, Graphite, Zirconia, Ceria.

Corrosion, Hot Metal, Graphite, Zirconia, Ceria.