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武钢1号高炉炉底与炉缸长寿新技术 总被引:4,自引:0,他引:4
武钢1号高炉改造性大修,炉底与炉缸采用长寿新技术:增大炉缸容积,加深死铁层;选用半石墨炭砖和德国的高密质炭砖;炉底冷却采用软水密闭循环,以及设置完善的检测设施。总结运用钒钛矿护护经验,以减缓或消除炉底与炉缸“环缝”、“熔洞”、“蒜头状”侵蚀,达到炉底、炉缸高校长寿的目的。 相似文献
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高炉炉缸炉底侵蚀模型的开发及应用 总被引:1,自引:0,他引:1
用有限元法建立了高炉炉缸炉底侵蚀推测二维模型,可在线提供高炉炉缸炉底温度场及侵蚀线图,为高炉安全生产,实现高炉长寿和炉缸炉底的结构参数优化设计提供了依据。 相似文献
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简述了高炉炉缸炉底结构发展的过程及目前国外高炉炉缸炉底所采用的形式;介绍了鞍钢7号高炉炉缸炉底的设计情况,并总结了其采用的陶瓷杯结构和半石墨化碳砖的优点。 相似文献
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武钢4号高炉炉底炉缸破损调查分析 总被引:3,自引:0,他引:3
武钢4号高炉(2516m^3)第二代炉役采用了全炭砖水冷薄炉底结构,一代炉役寿命达11年6个月,停炉大修时的破损调查表明,炉底炉缸的破损严重,究其原因主要是采用的普通炭砖质量差。因炭砖质量差,开炉仅1年半,炉基温度就升高到560℃,此后便开始了长达10年的钒钛矿护炉,确保了炉底炉缸的生产安全,炉底炉缸的破损调查结果也表明钒钛矿护炉是富有成效的。 相似文献
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为了保障高炉安全生产,根据太钢三号高炉热电偶历史最高数据预测了炉缸炉底浸蚀状况,同时应用该软件分析铁水流动、耐材导热系数、死铁层深度和高炉异常对炉缸炉底的浸蚀影响,并得出炉缸炉底长寿的若干推论,对评价目前浸蚀状况和护炉及未来太钢长寿、高效高炉的建设提出若干参考意见。 相似文献
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根据近年来武钢2座大型高炉破损调查的资料,分析炉缸、炉底耐火材料破损的特征和原因。炉缸、炉底产生环形裂缝的主要原因是碱金属和锌的侵蚀,重点讨论锌对产生环形裂缝的影响。基于对炉衬侵蚀机理的分析,提出了能满足炉缸、炉底长寿要求的适宜的耐火材料。用于炉缸、炉底的耐火材料应具备导热率高、微孔或超微孔、抗铁水渗透性好和抗铁水熔蚀性好等性能。 相似文献
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通过太钢2座4 350 m3高炉生产、操作炉型监控和维护的实践,认识到高炉上下部操作炉型之间有密切的相互作用关系,其对炉缸寿命有一定的影响。高炉上部的操作炉型受到炉腹煤气量、炉身部位耐火材料的选择以及炉身冷却水流向的影响。适当的炉腹煤气量、减少冷却板与砖衬间可能形成的窜气通道、冷却水横向分段、分区冷却有助于形成合理的上部操作炉型。炉身操作炉型与渣皮厚度具有相互作用关系,风口以上操作炉型对炉缸炉底的侵蚀和结厚也存在相互作用关系。通过维持炉芯死焦堆透气透液性、高炉炉身硬质压入以及钒钛矿护炉等措施,维持合理的上、下部操作炉型,改善了炉况顺行和操作指标,同时减缓炉缸侧壁的侵蚀。 相似文献
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Fu-ming ZHANG 《钢铁研究学报(英文版)》2013,20(9):53-60
At the beginning of 1990s, Shougang blast furnaces (BFs) No. 2, No. 4, No. 3 and No. 1 were rebuilt sequently for new technological modernization in succession. The campaign life of BFs No. 1, No. 3 and No. 4 reaches 16. 4, 17. 6 and 15. 6 years, respectively, and the hot metal output of one campaign reaches 33. 8, 35. 48 and 26. 37 Mt, respectively; the hot metal output of BF effective volume of one campaign reaches 13328, 13991 and 12560 t/m3, respectively, which reaches the international advanced level of BF high efficiency and long campaign life. In BF designing, several advanced BF long campaign technologies were adopted. BF proper inner profile was optimized, reasonable inner profile was adopted, and closed circulating soften water cooling technology was applied in 4 BFs. Double row cooling pipe high efficiency cooling stave was developed which could prolong the service life of bosh, belly and stack. Hot pressed carbon brick and ceramic cup hearth lining structure were applied and optimized. BF operation was improved continuously to ensure stable and smooth operation of BF. Hearth working condition control was strengthened, burden distribution control technology was applied to achieve reasonable distribution of gas flow, and heat load monitoring was strengthened to maintain BF reasonable working inner profile. Proper maintenance at the end of BF campaign was enhanced. Hearth and bottom service life was prolonged by adding titaniferous material and enhancing hearth cooling. Gunning of lining was carried out periodically for the area above tuyere zone. 相似文献
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对济源钢铁三座高炉炉缸堆积事故的处理进行了总结。由于入炉原燃料中钛负荷高,在年修结束后复风过程中造成高炉群发性炉缸堆积事故,炼铁厂减产近8万吨铁,公司损失巨大。通过配加锰矿洗炉,获得成功,并对以后的炉况处理积累经验。 相似文献
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涟钢4号、1号高炉曾先后发生炉底烧穿事故,通过采取快速修补、降低冶炼强度、加强监护、在烧结中配入钒钛矿粉护炉等措施,使高炉逐步恢复到了全风作业,延长了高炉寿命,重点介绍了4号高炉炉底烧穿的原因,处理及维护。 相似文献
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阐述宣钢高炉长寿高效生产技术的应用情况及效果,提出适合宣钢原燃料条件下高炉长寿高效生产的合理途径。从施工设计到操作管理,逐渐形成具有宣钢特点的高炉长寿高效生产技术:采用经济合理的“扬冷避热型梯度布砖法”,建立健全中钛冶炼条件下炉缸活跃指数管理机制,严格控制钾、钠、锌等有害元素质量分数,减少炉缸气隙,使高炉实现长寿高效生产。 相似文献
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ZHAO Hong-bo CHENG Shu-sen ZHAO Min-ge 《钢铁研究学报(英文版)》2007,14(2):6-12
One of the bottlenecks of the blast furnace (BF) campaign is the life length of hearth bottom. The basic reason for the erosion of hearth bottom is its direct contact with hot metal. According to the theory of heat transfer, models of BF hearth bottom are built based on the actual examples using software and VC language, and the calculated results are in good agreement with the data of BF dissection after blowing out. The temperature distribution and the capability of the resistance to erosion for different structures of hearth bottom are analyzed, especially the two prevalent kinds of hearth bottom arrangements called "the method of heat transfer" for all-carbon brick bottom and "the method of heat isolation" for ceramic synthetic hearth bottom. Features of the two kinds of hearth bottoms are analyzed. Also the different ways of protecting the hearth bottom are clarified, according to some actual examples. After that, the same essence of prolonging life, and the fact that the existence of a "protective skull" with low thermal conductivity between the hot metal and brick layers is of utmost importance are shown. 相似文献