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4号高炉容积为2516m~3,于1970年9月30日投产,是我国自行设计的第一座采用全炭砖水冷薄炉底的大型高炉。该高炉于1984年7月11日停炉大修,同年10月31日送风进入第二炉役。大修后的炉型较第一代合理,炉形趋于矮胖,风口增加至28个;炉缸高度从3.7m增加到4.0m;加深死铁层至1050mm;使用贯流式风口并配高压水;使用新型长寿热风阀;上料系统用PC-584计算机控制;炉前采用液压矮硷、大布袋除尘等技术。实践证明,这些技术措施对改善高炉技术经济指标均有一定的效果。从炉龄和设备完整状况来看,4号高炉
4 blast furnace volume of 2516m ~ 3, put into operation on September 30, 1970, is China’s first self-designed large-scale blast furnace with all-carbon brick water-cooled thin bottom. The blast furnace overhaul on July 11, 1984 overhaul, the same year on the 31st of the same year into the second blast furnace service. Overhaul after the furnace than the first generation of reasonable, stove tends to be stout, the outlet increased to 28; hearth height increased from 3.7m to 4.0m; to deepen the dead iron layer to 1050mm; the use of cross-flow tuyere with high pressure Water; the use of new longevity hot air valve; feeding system with PC-584 computer control; front of the furnace using hydraulic short alkali, large bag dust and other technologies. Practice has proved that these technical measures to improve the technical indicators of blast furnace have a certain effect. From the furnace and equipment integrity of the situation, No. 4 blast furnace