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11、ading, quality and efficiency first power.唐钢2560m3高炉炉体设计简介北京钢铁设计研究总院 炼铁工程所全 强 吕宇来内容提要：本文简要介绍了唐钢2560m3高炉炉体设计，及在延长高炉寿命上所采用的新技术，如炉体采用板壁结合技术，炉缸炉底陶瓷杯技术。关键词：2560m3高炉 长寿 新技术abstract: a introduction to Tanggang 2560m3 BF , new technology applied in long campaign life, such as plate-stave combination ,cerami
12、c cup.Key words : 2560m3 BF long campaign new technology 1 概述唐钢2560m3高炉是唐钢二铁厂一号高炉移地大修工程，也是唐钢规划中的一座2500m3级的高炉。唐钢二铁厂原有两座1260m3高炉，分别建于1989年和1993年。1号高炉于1998年12月25日停炉，一代炉役寿命9年3个月、产铁量679104 t、单位炉容产铁量5389 t/ m3。新建2560 m3高炉本着技术、装备先进、实用的原则，在1号、2号高炉成功的设计经验基础上，设计中采用了一些行之有效的新技术：如高炉长寿技术、炉体为板壁结合冷却结构、炉底炉缸采用陶瓷杯技术、软
13、水密闭循环冷却技术；焦丁回收、槽下减重法称量技术、并罐无料钟炉顶装料设备、高风温技术等等。 唐钢新建2560m3高炉工程建在唐钢二铁厂现有厂区内进行，场地狭窄，除建设工艺主体设施外，同时建设与该高炉有关的公用和辅助设施，设计中尽可能减少各系统的占地面积，进行合理的布置，保证高炉安全生产。该工程设计占地18hm2，建筑系数31.7%。 唐山钢铁公司二铁厂新建2560m3高炉，是由北京钢铁设计研究总院为主，唐钢设计研究院参加联合设计的。1996年8月9日工程设计委托后，正式开展设计，1996年12月26日开始建设，于1998年9月26日正式投产，历时26个月。总投资9.6亿元人民币。投产后高炉生产
14、正常，炉子稳定顺行，生产不到一星期，利用系数已达1.3以上，到11月份，高炉利用系数就已基本稳定在1.7左右。实践证明：该高炉整体设计水平是先进的，采用的各项新技术是可靠的。并具有占地少、投资省、建设快的特点。 高炉主要技术经济指标如下序号名称单位指标1高炉的一代炉龄年12152利用系数t/m3.d2.03焦比kg/tHM3904喷煤量kg/tHM150 max 2005燃料比kg/tHM5406渣量kg/tHM4007炉顶压力Mpa0.28热风温度11509富氧率% 310熟料率%10011年平均作业率%9312生铁产量103t/a1730随着炼铁技术的进步，对高炉的长寿、优质、高产、低耗提
15、出了更高的要求。从我国高炉生产实践看，影响我国高炉寿命的主要问题是炉缸炉底及炉身下部的寿命问题。例如，炉缸因蘑菇型侵蚀，产生炉缸烧穿；炉身下部、炉腰等部位冷却壁过早大量损坏，失去砖衬，造成炉壳开裂，影响高炉寿命。唐钢2560m3高炉炉体设计是在充分总结了国内外大、中型高炉长寿技术的基础上，并结合国内及唐钢的具体情况，采用了理论、实践证明是安全、可靠的一系列长寿措施，将设计寿命提高到12年，其主要特点如下：l 采用板壁结合式冷却结构，其中冷却板是可更换的；l 由于采用了可靠冷却结构，耐火材料档次要求降低，节省了投资；l 高炉炉体设备、耐材全部国产化；l 采用软水密闭循环冷却技术；l 风口采用大块组合砖；l 炉底炉缸采用小块砖砌筑的陶瓷杯结构，炉缸采用国产微孔炭砖；l 炉体冷却高度100%；高炉炉体图见图1。2炉型设计合理的炉型对高炉操作，实现长寿、优质、高产、低耗非常重要。唐钢2560m3高炉炉型设计是在比较了国内外同级高炉炉型的基础上，并结合唐钢高炉操作的具体条件设计的。炉型设计中特别考虑了对炉缸寿命有重大影响的死铁层深度，根据炉缸直径与死铁层的关系，设计中加深死铁层，使“料芯”悬浮在铁水之上，出铁时，减少铁水对炉缸、炉底耐材砌体的环流侵蚀。高炉炉型尺寸表1。 图1 高炉炉体图 表1
