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信钢2号、3号高炉同时进行停炉中修,其中2号高炉要进入炉内更换炉喉钢砖并更换炉顶设备,3号高炉原计划仅更换炉顶设备,后转入无计划大修。本次高炉停炉过程中均没有采取打水(为保护炉身砖衬),安全停炉。其中3号高炉停炉12小时后临时进行放残铁操作并彻底放尽炉内残铁,2号高炉在炉底残铁基本凝固、炉缸内存在大量炉喉残砖、喷涂料及炸落的近10多吨渣皮、炉内温度接近室温的情况下,通过按冷风开炉配料、按炉内冻结处理方法进行复风操作,一举在48小时中不仅实现了炉况转顺,避免了可能的炉缸冻结,恢复炉况的过程中没有烧坏一个风口,进一步丰富了信钢高炉停开炉水平。
The No. 2 and No. 3 blast furnaces of Sinosteel were also undergoing maintenance in the middle of the shutdown period. No. 2 blast furnace entered the furnace to replace the laryngeal steel brick and replace the top equipment. No.3 blast furnace originally planned to replace only the top equipment and then transferred to no plan Overhaul The blast furnace shutdown process did not take water (to protect the furnace brick lining), safe shutdown. Among them, the No.3 blast furnace left for 12 hours and then temporarily put the residual iron operation and thoroughly discharged the residual iron in the furnace. The No. 2 blast furnace was basically solidified in the bottom of the residual iron. There was a large number of furnace throat and residual bricks, spraying materials and exploded Nearly 10 tons of slag skin, the furnace temperature is close to room temperature, by pressing the cold blasting ingredients, according to the method of freezing the furnace complex wind operation, in one fell swoop in 48 hours, not only to achieve a smooth transition to avoid possible Of the hearth freezer, the process of recovering the furnace did not burn a tuyere, and further enriched the stop of open fire furnace Hsinchu furnace level.