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| Hazard and Prevention of Gas Gap in Hearth Wall of Blast Furnace |
| ZOU Zhong-ping1,GUO Xian-zhen2 |
1. Ironmaking Department, Cisdi Engineering Co., Ltd., Chongqing 401122, China
2. Anyang Iron and Steel Co., Ltd.， Anyang 455004, Henan, China |
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Abstract Gas gap was the biggest threat to BF hearth long campaign life. Through academic calculations and field investigations, the influencing factors to cause gas gap in hearth area was analyzed. As the results, the effective measures involving design, construction and operation were proposed to avoid gas gap for long campaign life of BF hearth, and the solutions were provided to achieve non-gas gap operation and long hearth life. Jacket cooling, using hot water during furnace drying process and leak prevention were found to be the most effective measures of gas gap prevention.
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Received: 30 September 2011
Published: 27 June 2012
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2012, Vol. 47 
