ISSN 2594-357X
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Abstract
Self-reducing iron-carbon containing briquettes are perspective charge materials for Blast Furnaces (BF) making it possible to reduce considerably the coke consumption as well as the total emissions of the СО2 within the technological network "Sintering- Ironmaking-Steelmaking". Such cylindrical shape (diameter 30mm, length 50-70mm) briquettes (Fe content 37-44%, C content 12-15 %) have been produced by the "Stiffextrusion" technology at the industrial extrusion line with productivity of 20 tonnes/hour. The briquettes were made from disperse metallurgical wastes (BOF dust -48 %, BF dust -25 %, fine iron-ore -20%, Portland cement -7 %). They have been used as a main component of the BF charge (briquettes 60-62 %, iron ore 38-40 %) for the production of the foundry iron (Si content 0,9-2,5 %) in a small BF (working volume 45 m3). The coke rate was 565-710 kg/т, the blast temperature - 750-900 oC and slag volume - 275-380 kg/t.
Self-reducing iron-carbon containing briquettes are perspective charge materials for Blast Furnaces (BF) making it possible to reduce considerably the coke consumption as well as the total emissions of the СО2 within the technological network "Sintering- Ironmaking-Steelmaking". Such cylindrical shape (diameter 30mm, length 50-70mm) briquettes (Fe content 37-44%, C content 12-15 %) have been produced by the "Stiffextrusion" technology at the industrial extrusion line with productivity of 20 tonnes/hour. The briquettes were made from disperse metallurgical wastes (BOF dust -48 %, BF dust -25 %, fine iron-ore -20%, Portland cement -7 %). They have been used as a main component of the BF charge (briquettes 60-62 %, iron ore 38-40 %) for the production of the foundry iron (Si content 0,9-2,5 %) in a small BF (working volume 45 m3). The coke rate was 565-710 kg/т, the blast temperature - 750-900 oC and slag volume - 275-380 kg/t.
Keywords
Briquettes; Blast furnaces; Charge materials; Metallurgical wastes.
Briquettes; Blast furnaces; Charge materials; Metallurgical wastes.
How to refer
Dalmia, Yogesh;
Kurunov, Ivan;
Steele, Richard;
Bizhanov., Aitber.
NEW CHARGE MATERIAL FOR BLAST FURNACE
,
p. 277-281.
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-22091
