解决中天钢铁高炉炉壳上涨实践

doi:10.13228/j.boyuan.issn0449-749x.20190154

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摘要高炉炉壳上涨是近几年钢铁企业部分高炉面临的一个难题,控制高炉炉壳上涨对高炉的长寿、安全稳定运行有重要意义。针对中天高炉炉壳上涨问题,以压力容器盲板力的计算为依据,结合长期分析和治理实践,明确了高炉炉壳上涨的关键原因是由炉内压力产生的盲板力所导致;并给出了高炉炉壳上涨的5个具体步骤,炉底板变形,炉内耐材变形,耐材之间出现缝隙,有害金属沿着缝隙富集,炉壳逐步长高。在此基础上,针对性地研发了双炉底板结构,并在中天钢铁的多座高炉上进行了成功应用,解决了高炉炉壳上涨的难题。将探索高炉炉壳上涨原因的焦点从原料、操作、施工和耐材材质等方面转向高炉炉底板自身强度上。

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	卢维强
	张俊杰
	段国建
	徐东升
	裴元东

关键词 ：高炉, 炉壳上涨, 力学, 炉底板, 盲板力

Abstract：The rise of blast furnace shell is a difficult problem faced by some blast furnaces in iron and steel enterprises in recent years, and controlling the rise of blast furnace shell is of great significance to a long life, safe and stable operation of blast furnaces. Aiming at the problem of furnace shell rising in Zenith blast furnace, based on the calculation of pressure vessel blind plate force, combined with long-term analysis and treatment practice, the key reason of furnace shell rising is determined, which is the blind plate force caused by furnace pressure; and five steps of furnace shell rising are given: deformation of furnace bottom plate-deformation of refractory in furnace-crack between refractories-harmful element enrichment along the crevice-furnace shell gradually grows. On this basis, the double bottom slab structure was developed and successfully applied in several blast furnaces of Zenith Iron and Steel Co., Ltd. to solve the problem of furnace shell rising. Finally, the focus of exploring and the reasons for the rise of blast furnace shell should be shifted from raw materials, operation, construction, and refractory materials to the strength of blast furnace bottom plate.

Key words： blast furnace shell rising mechanics bottom plate blind plate force

收稿日期: 2019-04-11

引用本文:

卢维强, 张俊杰, 段国建, 徐东升, 裴元东. 解决中天钢铁高炉炉壳上涨实践[J]. 钢铁, 2020, 55(2): 42-47. LU Wei-qiang, ZHANG Jun-jie, DUAN Guo-jian, XU Dong-sheng, PEI Yuan-dong. Practice on solving problem of blast furnace shell rising in Zenith Steel Group Co., Ltd.. Iron and Steel, 2020, 55(2): 42-47.

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