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Proceedings of the Ironmaking, Iron Ore and Agglomeration Seminars

ISSN 2594-357X

34º Seminário de Redução de Minério de Ferro e Matérias-Primas — Vol. 01 , num. 34 (2004)

Title

STUDY OF THE PROCESS OF REDUCTION AND SMELTING OF SELF-REDUCING PELLETS BETWEEN 1573 AND 1673K

STUDY OF THE PROCESS OF REDUCTION AND SMELTING OF SELF-REDUCING PELLETS BETWEEN 1573 AND 1673K

Authorship

NOGUEIRA, ALBERTO ELOY ANDUZE; MOURÃO, MARCELO BREDA; TAKANO, CYRO

Alberto Eloy Anduze Nogueira
NOGUEIRA, ALBERTO ELOY ANDUZE

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Marcelo Breda Mourão
MOURÃO, MARCELO BREDA

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Cyro Takano
TAKANO, CYRO

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DOI

10.5151/2594-357x-34Red-695-704

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Abstract

This paper tries to understand the behavior of self-reducing pellets to produce iron nuggets. The following effects were experimentally tested and analyzed: the reducing agent; content of volatile matters; composition of the slag; and the thermal cycles of the reducing process of the self-reducing pellets. The results showed that: at high temperatures, above 1373K, the volatile matters have negligible influence on reduction but can have negative effect when the content in the reducing agent is high (~30%); the reduction temperature should not be higher than ~1573K to avoid volcano’s effect; and the coalescence of iron droplets in the pellets is dependent of the composition of slag and it is favored with low liquidus temperature.

 

This paper tries to understand the behavior of self-reducing pellets to produce iron nuggets. The following effects were experimentally tested and analyzed: the reducing agent; content of volatile matters; composition of the slag; and the thermal cycles of the reducing process of the self-reducing pellets. The results showed that: at high temperatures, above 1373K, the volatile matters have negligible influence on reduction but can have negative effect when the content in the reducing agent is high (~30%); the reduction temperature should not be higher than ~1573K to avoid volcano’s effect; and the coalescence of iron droplets in the pellets is dependent of the composition of slag and it is favored with low liquidus temperature.

Keywords

Self-reduction, iron nuggets, carbothermic reduction

Self-reduction, iron nuggets, carbothermic reduction

How to cite

Nogueira, Alberto Eloy Anduze; Mourão, Marcelo Breda; Takano, Cyro. STUDY OF THE PROCESS OF REDUCTION AND SMELTING OF SELF-REDUCING PELLETS BETWEEN 1573 AND 1673K, p. 695-704. In: 34º Seminário de Redução de Minério de Ferro e Matérias-Primas, None, 2004.
ISSN: 2594-357X, DOI 10.5151/2594-357x-34Red-695-704