共查询到19条相似文献,搜索用时 187 毫秒
1.
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
2.
3.
4.
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
5.
6.
7.
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
8.
9.
着重介绍高炉铸铁、铸钢冷却壁的材质选择和制造要点。通过对冷却壁使用工况的分析,阐述了冷却壁材质选择和结构设计的原则。通过冷却壁材质、制造工艺、时效处理等环节的控制,稳定并提高了铸铁、铸钢冷却壁的使用寿命,实现了冷却壁综合质量指标,从而为实现高炉长寿的最终目的创造了条件。 相似文献
10.
11.
《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
12.
13.
依据济南钢铁集团总公司第一炼铁厂4BF生产实践,介绍了高炉铸钢冷却壁的破损状况;分析了其破损的原因;提出了改善冷却壁材质及结构、改进水质、提高软水流量、强化炉体点检和优化炉内操作等一系列相关的处理措施。4BF的实践对铸钢冷却壁的广泛应用将有一定的指导作用。 相似文献
14.
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
15.
分析了影响高炉炉衬寿命的因素和炉衬冷却系统的重要性,探索了用于高炉冷却系统的铸铁冷却壁和铜冷却壁,进一步陈述了高炉热负荷的选择和炉衬耐材的选择,从而阐述了现代高炉的炉衬冷却系统。 相似文献
16.
17.
18.
八钢新区2500m3 A高炉,炉体冷却系统结构复杂。板壁结合、炉体全冷,冷却壁多,创新型、快捷的高炉冷却壁的破损检漏利于高炉的顺行、稳定和一代炉龄长寿。 相似文献
19.
高炉烘炉质量直接影响高炉长寿,通过建立炉缸炉底砖衬传热模型,以1080m3高炉烘炉阶段炉缸炉底温度数据加以验证。分析了烘炉时间、烘炉温度、冷却强度等因素对冷却壁与炭砖间填料温度的影响。结果表明在0. 5m/s冷却水作用下,对于目前普遍采用的最高烘炉温度(600℃),填料最高温度仅为44℃,远低于要求的烘干温度,不能实现较好的烘炉效果。烘炉过程中需要减弱炉缸冷却甚至停水烘炉,适当提高烘炉温度,延长烘炉保温时间;停水烘炉时冷却壁最高温度仅为158℃,远低于铸铁冷却壁的安全工作温度。考虑到烘炉时热风的氧化性气氛,保证陶瓷质耐火材料严密覆盖在炉缸炉底炭砖表面,防止开炉前炭砖氧化烧损。通过插入冷却壁与填料交界面的热电偶温度分析炉缸砖衬的升温及保温,进而判断烘炉效果;并根据高炉固有的砖衬结构及设备参数,制定与高炉相匹配的烘炉制度。 相似文献