ISSN 2594-357X
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When magnetite iron ores are reduced by hydrogen gas, Fe film is easily formed and prevents the reducing gas from coming into contact with iron oxide. Instead of hydrogen gas, CO+H2 containing gas can be more favor to enhance of the iron ore reduction because carburization gas can induce iron carbide formation on Fe layer. However, it is meta-stable compound and thus easily decomposed to graphite. It is found that suppression of the graphitization by addition of H2S gas induces the open structure of the magnetite concentrates to aid its reduction.
When magnetite iron ores are reduced by hydrogen gas, Fe film is easily formed and prevents the reducing gas from coming into contact with iron oxide. Instead of hydrogen gas, CO+H2 containing gas can be more favor to enhance of the iron ore reduction because carburization gas can induce iron carbide formation on Fe layer. However, it is meta-stable compound and thus easily decomposed to graphite. It is found that suppression of the graphitization by addition of H2S gas induces the open structure of the magnetite concentrates to aid its reduction.
Palavras-chave
Magnetite; Iron carbide; Reduction.
Magnetite; Iron carbide; Reduction.
Como citar
Kim, Hyun-Soo;
Cho, Min-Young;
Yi, Sang-Ho;
Sasaki., Yasushi.
ENHANCEMENT OF MAGNETITE REDUCTION BY IRON
CARBIDE FORMATION
,
p. 2458-2463.
In: 42º Seminário de Redução de Minério de Ferro e Matérias-primas / 13º Seminário Brasileiro de Minério de Ferro / 6th International Congress on the Science and Technology of Ironmaking,
Rio de Jabeiro,
2012.
ISSN: 2594-357X
, DOI 10.5151/2594-357X-22521
