ISSN 2594-357X
46º Seminário de Redução/ 17º Minério de Ferro/ 4º Aglomeração — vol. 46, num.46 (2016)
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Resumo
The premature failure of copper staves in the lower stack and bosh is frequently the cause for an interim blast furnace repair at great cost to the blast furnace owner. Protective accretions may form on the stave hot face, but when these accretions are lost the staves can begin to deteriorate both due to abrasive wear from exposure to the descending burden materials and due to thermal cracking from exposure to hightemperature process excursions. These mechanisms can lead to failure of cooling passages, which forces blast furnace operators to shut off these channels, accelerating the rate of copper stave wear. Finger cooler technology was developed to extend blast furnace life by restoring cooling to damaged staves. Evidence for their effectiveness is presented herein in the form of experimental test work and conjugate heat transfer (CHT) analysis carried out using computational fluid dynamics (CFD) simulations. These tests demonstrate that under typical blast furnace excursion conditions, a stave fitted with finger coolers will undergo half the temperature rise of a stave fitted with conventional cigar coolers.
Palavras-chave
Copper stave, Stave failure, Campaign life, Blast furnace
Blast furnace
Como citar
Vickress, Dustin;
Metcalfe, Darryl;
Rudge, David;
Jastrzebski, Maciej;
Cameron, Ian;
Hyde, Barry;
Shaw, Andrew;
Ponomar, Andriy.
ADVANCED TECHNOLOGY DEVELOPMENTS IN REMEDIAL STAVE COOLING
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p. 37-44.
In: 46º Seminário de Redução/ 17º Minério de Ferro/ 4º Aglomeração,
Rio de Janeiro,
2016.
ISSN: 2594-357X
, DOI 10.5151/2594-357X-27542
