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铸钢冷却壁在南钢高炉应用后取得了一定效果,研究和生产实践表明,铸钢冷却壁性能优于球墨铸铁冷却壁。在高炉炉腰、炉腹、炉身下部使用铸钢冷却壁将会起到延长高炉寿命、改善高炉冶炼指标等作用。 相似文献
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冷却壁是高炉炉体冷却设备,为了适应高炉长寿命的要求,炼铁行业对其不断进行改进。本介绍了球墨铸铁冷却壁、铸钢冷却壁和铜冷却壁的性能及应用。 相似文献
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现代高炉炉体冷却设备 总被引:2,自引:0,他引:2
为提高高炉寿命 ,现代高炉炉体冷却设备被广泛应用。对普通铸铁冷却壁、球墨铸铁冷却壁、铸钢冷却壁、铜冷却壁的优缺点进行了分析 ,对其它冷却设备进行了简要介绍 相似文献
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在建立应力场理论计算模型基础上,采用有限元分析软件ANSYS和数学工具MAT-LAB分别对高炉铸钢冷却壁和铜铸钢复合冷却壁应力场进行计算机模拟.结果表明,铜铸钢复合冷却壁的热面最大应力低于铸钢冷却壁,同时综合性能也优于铸钢冷却壁. 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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《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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无热阻新型钢冷却壁的研制和应用 总被引:6,自引:0,他引:6
论述了无热阻和低热阻钢冷却壁研制应用的理论和实践,现有的工作已经证明:钢冷却壁的综合性能显著地优于目前大量应用的球墨铸铁冷却壁,从而有利于促进各型高炉的长寿。 相似文献
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《钢铁冶炼》2013,40(5):415-421
AbstractCast steel blast furnace (BF) cooling staves are widely used in the Chinese steel industry. A heat transfer mathematical model of a BF cast steel cooling stave has been developed and verified by thermal state experiments. Calculation of a cooling stave working under steady state has been carried out based on the model. Effects of two factors, thickness of scale on the cooling water pipes and gas clearance between the pipes and main body, which are difficult for experimental measurement but determined mathematically, on the temperature field of the stave body are discussed. The results indicate that much importance should be attached to the two factors during manufacturing of cooling staves as they highly influence cooling capability of cooling stave and hence BF operation. 相似文献
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冷却壁安全工作是保证高炉长寿的基础。通过设计并建造冷却壁热态实验炉,研究了高炉铸铁冷却壁热面无渣皮和有渣皮时的非稳态传热过程,考察了不同炉气温度条件下冷却壁热电偶温度的变化规律。回归得到了炉气在升温阶段、稳定阶段、降温阶段时冷却壁热电偶温度随时间的变化关系式。计算得出了冷却壁热面在有无渣皮条件下的平均热流强度,回归得出了炉气平均对流换热系数随炉温的变化关系。结果表明,冷却壁热面在有渣皮时热电偶温度的变化速率显著低于无渣皮时的变化速率,冷却壁破损的主要原因是冷却壁温度的反复变化和渣皮的频繁脱落而产生的热应力。 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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对钢冷却壁的研制及其在鞍钢、济钢等8座高炉上的使用情况进行了总结,生产实践表明,钢冷却壁的综合性能明显优于球墨铸铁冷却壁,有利于高炉的长寿。 相似文献