ISSN 2594-357X
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Low coke ratio is one of the principal targets for the operators at blast furnace (BF) plant. In order to decrease the coke ratio further, the technical idea is to open the reductant roles of coke in BF ironmaking. After the reducing characteristics of the coke making process were analyzed, the low-carbon ironmaking technology on cotreatment of coal and iron-ore fines was proposed, and the first experiments were finished in laboratory scale. The results show that the reduction degree of the iron ore fines is up to 85% at 800°C of carbonization temperature, and 60% of Oxygen is removed by hydrogen. Comparing with ironmakking of BF, the emission of CO2 for this low-carbon ironmaking technology is reduced by 0.67 ton per ton metallic iron with good benefits of economy and environment.
Low coke ratio is one of the principal targets for the operators at blast furnace (BF) plant. In order to decrease the coke ratio further, the technical idea is to open the reductant roles of coke in BF ironmaking. After the reducing characteristics of the coke making process were analyzed, the low-carbon ironmaking technology on cotreatment of coal and iron-ore fines was proposed, and the first experiments were finished in laboratory scale. The results show that the reduction degree of the iron ore fines is up to 85% at 800°C of carbonization temperature, and 60% of Oxygen is removed by hydrogen. Comparing with ironmakking of BF, the emission of CO2 for this low-carbon ironmaking technology is reduced by 0.67 ton per ton metallic iron with good benefits of economy and environment.
Palavras-chave
Blast furnace (BF); Coke oven; Coke ratio; Low-carbon ironmaking.
Blast furnace (BF); Coke oven; Coke ratio; Low-carbon ironmaking.
Como citar
Chen, Hui;
Ma, Ze-jun;
Zhang., Wei-dong.
NOVEL CONSIDERATION OF IRONMAKING PROCESS ON
CO-TREATMENT OF COAL AND IRON-ORE FINES
,
p. 1793-1799.
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-22295
