ISSN 2594-357X
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In 2005 a dramatic and deliberate change in casting philosophy was adopted on both of the BlueScope Steel Port Kembla blast furnaces. The change was from a “dry hearth” practice where the iron/slag interface was maintained low in the furnace to one where the iron/slag interface was maintained at or above the taphole level. The change achieved the targeted reduction in slag inventory being carried by the furnace. The variability of all aspects of casting also improved. Anticipated improvements in hearth sidewall heat loads were observed. Stave in-service conditions were also significantly affected by the changed casting philosophy, with a reduction in heat load and improved consistency observed around the furnace. This paper reviews the influence of the changed casting philosophy on the operations of the whole blast furnace by reviewing specific casting indices, deadman behaviour and gas and burden distribution. The impact on stave in-service conditions introduces a newly developed smelting line index.
In 2005 a dramatic and deliberate change in casting philosophy was adopted on both of the BlueScope Steel Port Kembla blast furnaces. The change was from a “dry hearth” practice where the iron/slag interface was maintained low in the furnace to one where the iron/slag interface was maintained at or above the taphole level. The change achieved the targeted reduction in slag inventory being carried by the furnace. The variability of all aspects of casting also improved. Anticipated improvements in hearth sidewall heat loads were observed. Stave in-service conditions were also significantly affected by the changed casting philosophy, with a reduction in heat load and improved consistency observed around the furnace. This paper reviews the influence of the changed casting philosophy on the operations of the whole blast furnace by reviewing specific casting indices, deadman behaviour and gas and burden distribution. The impact on stave in-service conditions introduces a newly developed smelting line index.
Palavras-chave
Blast Furnace; Hearth; Deadman; Staves; Smelting Line.
Blast Furnace; Hearth; Deadman; Staves; Smelting Line.
Como citar
Chapman, Michael;
Nightingale, Robert;
Kelly, B.;
Kaye, B.;
Tanzil, F.;
Sullivan., P..
IMPROVED HEARTH LIQUIDS MANAGEMENT AND
RECOGNISING ITS INFLUENCES THROUGHOUT THE
BLAST FURNACE
,
p. 832-842.
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-22164
