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鞍钢11号高炉于1990年3月采取抢修更换炉腰及炉身下部炉皮以延缓炉役期。恢复生产后,炉腹及其邻近部位处于“赤热”状态,无法维持生产。在此紧急关头,采取在高炉边缘部位加粘土砖骨料,使渣中Al_2O_3含量≥18%,获得维护炉腹的良好效果。为使粘土砖骨料装在高炉边缘部位,在正分装料制度下,装在第一车矿料上方。每班装入批数为总上料批数50%。5月1日,白班每批料装入1t骨料下达后,除一个冷却壁出水温差为12℃,其余皆达规定水准。消除了炉皮“赤红”现象。评价效果,除观察冷却水温差、炉皮状态外,就是按计算的渣
Anshan Iron and Steel No. 11 blast furnace in March 1990 to repair and replace the waist and the lower part of the furnace skin to delay furnace service. After the resumption of production, the bosh and its adjacent parts are in a state of “red fever” and can not sustain production. At this critical juncture, clay bricks were added to the edge of the blast furnace so that the content of Al_2O_3 in the slag was ≥18%, and the good effect of maintaining the bosh was obtained. In order to make the clay brick aggregate installed on the edge of the blast furnace, it is installed above the first car ore material under the positive sub-charging system. The number of batches in each class is 50% of the total number of batches. On May 1, after 1 ton of aggregate was loaded into each shift on a day shift, the temperature difference of the effluent from a cooling wall was 12 ° C, and the rest reached the prescribed level. Elimination of the furnace “red” phenomenon. Evaluation results, in addition to observe the cooling water temperature difference, the state of the furnace, it is calculated by the slag