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今年三月份,鞍钢九高炉实现了1200℃的高风温。四、五月份又出现了1250℃的高风温,四月份平均风温为1202℃,五月份为1227℃。九高炉去年大修时炉顶全部采用高铝砖,在1、2号热风炉的火井上部和内环部分,3号炉的火井上部都采用了高铝砖。高铝砖的理化指标相当好,Al_2O_3含量一般>70%,火井处最低也达>67%,耐火度>1790℃,荷重软化开始最低温度>1500℃。另外1、2号热风炉格孔缩小成60×60毫米,每座热风炉加热面积增加10.8%。高炉的直吹管与弯头,弯头的
In March this year, Angang Jiu blast furnace to achieve a high temperature of 1200 ℃. Fourth, in May there was a 1250 ℃ high winds, the average April temperature was 1202 ℃, May 1227 ℃. Nine blast furnace last year, when the top of the roof with high alumina bricks, hot stove in the 1,2 hot stove and inner part of the upper part of the furnace No. 3 furnace wells are used high alumina bricks. High alumina brick physical and chemical indicators are quite good, Al 2 O 3 content is generally> 70%, the lowest wells also reached 67%, refractoriness> 1790 ℃, load softening start minimum temperature> 1500 ℃. On the other hand, No. 1 and No. 2 hot blast stoves were reduced to 60 × 60 mm, and the heating area of each hot stove increased by 10.8%. Blast furnace straight blow pipe with elbows, elbows