ISSN 2594-357X
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A number of injection trials carried out over the years at the LKAB experimental blast furnace (LKAB EBF) and in industrial BFs shows that tuyere injection is a feasible method for supply of various types of pulverized materials as different types of PC, BOF slag and BF dust to the BF. In this study, the effect on process, raceway conditions, hot metal quality, reductant agent consumption and slag formation due to the selection of injection materials are discussed based on trial data. A special attention is paid on the injection of alternative carbon containing residual material. Based on recent trials the efficiency in use of carbon in injected residual materials are discussed and pilot scale results compared with industrial trial results.
A number of injection trials carried out over the years at the LKAB experimental blast furnace (LKAB EBF) and in industrial BFs shows that tuyere injection is a feasible method for supply of various types of pulverized materials as different types of PC, BOF slag and BF dust to the BF. In this study, the effect on process, raceway conditions, hot metal quality, reductant agent consumption and slag formation due to the selection of injection materials are discussed based on trial data. A special attention is paid on the injection of alternative carbon containing residual material. Based on recent trials the efficiency in use of carbon in injected residual materials are discussed and pilot scale results compared with industrial trial results.
Palavras-chave
Injection; Combustion; Tuyere slag; Reducing agents.
Injection; Combustion; Tuyere slag; Reducing agents.
Como citar
Ökvist, Lena Sundqvist;
Hyllander, Gunilla;
Olsson, Erik T;
Wikström, Jan-Olov;
Lundgren., Maria.
INJECTION OF PULVERIZED MATERIALS INTO THE BLAST
FURNACE RACEWAY
,
p. 1721-1731.
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-22285
