ISSN 2594-357X
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Abstract
At the beginning of 1990s, Shougang No.2, No.4, No.3 and No.1 blast furnace (BF) were rebuilt for new technological modernization in succession. The campaign life of No.1, No.3 and No.4 BF reach 16.4 years, 17.6 years and 15.6 years separately; the hot metal output of one campaign life reaches 3.38Mt, 3.548Mt and 2.637Mt separately; the hot metal output per m3 BF effective volume of one campaign life reaches 13328t/m3， 13991t/m3 and 12560t/m3 separately, which reaches the international advanced level of BF high efficiency and long campaign. In BF designing, several advanced BF long campaign technologies were adopted. BF proper inner profile is optimized, reasonable profile is adopted, soften water closed circulation cooling technology is applied in 4 BFs. Double row cooling pipe high efficiency cooling stave is developed which can prolong the service life of bosh, belly and stack. Hot pressed carbon brick and ceramic cup hearth lining structure are applied and optimized. During BF operation practice is improved continuously to ensure stable and smooth operation of BF. Hearth working condition control is strengthened, burden distribution control technology is applied to achieve reasonable distributed gas flow, heat load monitoring is strengthened to maintain BF reasonable operation profile. Proper maintenance during end of BF campaign is enhanced. Hearth and bottom service life is prolonged by adding titaniferous material and enhancing hearth cooling etc. Gunning of lining is carried out periodically for the area above tuyere zone.
At the beginning of 1990s, Shougang No.2, No.4, No.3 and No.1 blast furnace (BF) were rebuilt for new technological modernization in succession. The campaign life of No.1, No.3 and No.4 BF reach 16.4 years, 17.6 years and 15.6 years separately; the hot metal output of one campaign life reaches 3.38Mt, 3.548Mt and 2.637Mt separately; the hot metal output per m3 BF effective volume of one campaign life reaches 13328t/m3， 13991t/m3 and 12560t/m3 separately, which reaches the international advanced level of BF high efficiency and long campaign. In BF designing, several advanced BF long campaign technologies were adopted. BF proper inner profile is optimized, reasonable profile is adopted, soften water closed circulation cooling technology is applied in 4 BFs. Double row cooling pipe high efficiency cooling stave is developed which can prolong the service life of bosh, belly and stack. Hot pressed carbon brick and ceramic cup hearth lining structure are applied and optimized. During BF operation practice is improved continuously to ensure stable and smooth operation of BF. Hearth working condition control is strengthened, burden distribution control technology is applied to achieve reasonable distributed gas flow, heat load monitoring is strengthened to maintain BF reasonable operation profile. Proper maintenance during end of BF campaign is enhanced. Hearth and bottom service life is prolonged by adding titaniferous material and enhancing hearth cooling etc. Gunning of lining is carried out periodically for the area above tuyere zone.
Keywords
Blast furnace; Long campaign life; Hearth lining; Cooling stave.
Blast furnace; Long campaign life; Hearth lining; Cooling stave.
How to refer
Fuming, Zhang;
Qingwu, Mao;
Shi, Yao;
Shichong., Qian.
RESEARCH AND APPLICATION ON LONG CAMPAIGN LIFE
TECHNOLOGIES OF BLAST FURNACE AT SHOUGANG
,
p. 195-205.
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-21637
