共查询到20条相似文献,搜索用时 250 毫秒
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对酒钢7号高炉冷却壁破损后的修复方法进行了探讨。7号高炉开炉两个月后,5段冷却壁冷却水管开始大量破损,冷却壁冷却功能下降,影响了高炉日常安全运行和各项生产指标的进步。通过采取挖补炉壳对冷却壁管根修复,安装微型冷却器和异型冷却器,挖补炉壳安装小块铸铁冷却壁,以及定修造衬等护炉措施,使炉体冷却壁破损趋势得到有效控制,改善了高炉操作条件,为高炉顺行提供了保障。 相似文献
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武钢4号高炉1984年大修,开炉后24个月炉腹(四段)冷却壁开始出现破损。1987年9月,破损数目急剧强多。由于漏水,给高炉生产操作带来很多困难。在1987年11月和1988年2月两次武钢炼铁学术年会上,笔者提出使用长风口的建议,用以减弱边沿气流,抑制炉腹冷却壁破损。1988年4月炉腹破损更趋严重,少数冷却壁烧掉,5、6月份曾4次出现炉皮严重烧红,直接威胁高炉安全生产。为防止炉壳烧穿,除加强对炉壳的喷水冷却外,公司还决定尽快造出长540毫米(原为480毫米)的风口供4号高炉使用。6月3日,4 相似文献
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1993年7月济钢一铁1号高炉(350m^3)由于炉腹,炉腰和炉身下部冷却壁严重破损,采用了插入冷却棒和压入浆状耐火材料相结合的炉壁复合再造维护技术,取得了有效保护炉壳,控制冷却壁破损的良好的效果。 相似文献
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韶钢4#高炉第一代炉役后期,炉身冷却壁大量损坏,炉缸部分冷却壁水温差超高,炉底、炉基温度达到安全警戒线,炉壳多处开裂变形,依靠外部打水维持生产的情况下,通过采取强化管理、加强高炉操作、炉体修补等措施,保证了高炉按计划安全停炉并创下投产以来的最好生产指标。 相似文献
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可满足高炉严格使用要求的高性能MTT金属管铸铜冷却壁 总被引:3,自引:0,他引:3
E. van Stein Callenfels R. van Laar 《钢铁》2007,42(3):79-82
达涅利康力斯推出一种新的冷却概念,它将铜冷却壁与浇铸在其中的蒙乃尔铜-镍合金管结合为一个整体.蒙乃尔铜-镍合金管构成冷却水通道.它不仅可使冷却水拥有一条光滑的无泄漏通道,而且具有足够的尺寸灵活性,以满足躲避现有高炉炉壳开口的要求,还可以省去在高炉炉壳内的任何焊接. 相似文献
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《钢铁冶炼》2013,40(3):179-182
AbstractThe operating conditions of cast steel staves at Masteel blast furnace have been simulated to generate the temperature distribution under different operating conditions. The influence of the temperature and velocity of cooling water as well as the gas temperature of blast furnace on the temperature distribution of the cast steel stave was obtained. The main cause of stave damage is discussed. The result shows that cast steel staves possess better heat transfer ability and a lower temperature distribution field than nodular cast iron staves, but their performance is much less satisfactory than that of copper staves. 相似文献
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The capability of cooling staves is crucial for a long campaign life of blast furnaces (BF). Transient heat transfer analysis of blast furnace cooling staves made of copper, cast steel, and ductile cast iron are performed. Moreover, the temperature field variations of cooling staves according to different distributions of gas flow temperature are studied. A discussion of cooling staves made of the three different materials is given based on their performance during the transient heat transfer process. The results indicate that copper staves are suited for a long campaign life, as their performance is much better compared to cast steel and ductile cast iron staves especially during unsteady heat transfer. Moreover, the capacity of staves made of cast steel is better than that of ductile cast iron. 相似文献
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铜材氢脆现象是造成高炉铜冷却壁损坏的可能原因之一,但目前并未得到试验证实。模拟高炉工作环境对铜冷却壁材质进行了渗氢保温处理,在实验室条件下重现了高炉铜冷却壁氢脆现象,并采用金相显微观察、扫描电镜观察、氢氧质量分数检测及显微硬度测试等方法对铜冷却壁基体材质的微观形貌、元素质量分数及宏观使用性能等进行了表征。试验结果表明,在铜冷却壁异常工作条件下,将有可能产生铜材氢脆破坏作用;氢脆现象发生后,铜冷却壁内部将产生大量沿晶界分布的孔洞缺陷乃至晶界裂纹,且铜冷却壁宏观使用性能将出现显著下降;在炼铁生产中应严格控制铜冷却壁使用制度,防止氢脆现象发生以延长其寿命,保证高炉安全、稳定生产。 相似文献
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Mustafa Esmer Hamdi Alper Özyiğit 《Transactions of the Indian Institute of Metals》2017,70(8):2137-2145
Copper staves are widely used as cooling systems for blast furnaces. Since the inside wall of the furnaces are completely covered with copper staves, the failure of the system plays a significant role for premature blast furnace relining. Especially the bosh area is the critical part of blast furnaces because it faces high heat load. The damage to the bosh area directly affects the service period of BF’s. The lifetime of furnaces can be prolonged considerably by preventing the premature damage of this section. For this purpose, a new approach has been introduced to define the premature risk factor of copper staves based on design and operation parameters. The data of 34 different blast furnaces obtained from the members of World Steel Assoc. are applied to this new approach to calculate the premature risk factors. The results are recorded and analyzed according to service lifetime and actual wear situations of copper staves. Finally, all these analyzes show that the new approach, which is represented in this paper can be a new design check parameter for blast furnaces and a practical solution to define the premature wear risk of copper staves. Therefore, blast furnace designers and users can extend the blast furnace lifetime by using this new approach resulting in high economic benefits. 相似文献
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