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2号高炉于1993年12月10日建成投产。由于设计、制造、施工及操作等方面的问题,冷却壁破损比较严重。被迫于1996年7月进行中修。更换5～8层全部及9层部分冷却壁,并恢复风口组合砖以上的炉体砌砖。本次中修停炉工作比较理想,不仅实现了安全顺利停炉,而且炉缸渣铁排放干净,为中修后顺利开炉创造了良好条件。 1.停炉前高炉的状况及措施停炉前高炉顺行状况一直较好。由于炉皮开裂严重,一直采用抑制边缘的操作制度,a角固定在40°,矿石料线2.3m,焦炭不等料线,送风制度采用10个500mm的长风口与420mm的风口搭配使用,送风面积为0.2466m~2。因此,中心气流充足十字测温中心500℃左右,边缘110℃左右。为了确保停炉前炉况稳定顺行,提前一周改为全焦冶炼,并于6月14日取消钛矿,
No. 2 blast furnace was put into operation on December 10, 1993. As the design, manufacture, construction and operation and other aspects of the problem, the cooling wall damage more serious. Forced to repair in July 1996. Replacement of all 5 ~ 8 layers and 9 layers of partial stave, and restore the tuyere brick combination brick above. The repair and shutdown of the furnace work is ideal, not only to achieve a safe and smooth shutdown, and clean slag discharge of the furnace, repaired after a good start to create a good condition. 1. Pre-shutdown blast furnace conditions and measures Before shutdown, blast furnace conditions have been better. As a serious cracking furnace, has been using the suppression of the edge of the operating system, a corner fixed at 40 °, the ore line 2.3m, coke does not wait for the line, the air supply system with 10 500mm long tuyere and 420mm with the use of the outlet, Air supply area of 0.2466m ~ 2. Therefore, the center of ample cross-flow temperature center of about 500 ℃, the edge of about 110 ℃. In order to ensure that the condition of furnace before shutdown was stable and stable, all-focus smelting was changed one week in advance and the titanium mine was canceled on June 14,