一、概况武钢四号高炉(2516米~3),于1970年9月30日23:30开炉投产,至1974年2月17日6:50停炉中修,历时1235日,共出铁11284次,产铁234.7万吨。在生产期间,更换大、小钟各两个,焊补大、小钟两次,小修四次,计20.5日,实际生产1214日。由于炉身7.8.9段冷却壁已大部烧坏,炉身砖衬大部蚀去,炉身八段炉壳已严重变形下沉,故停炉中修。 I. Overview WISCO No.4 blast furnace (2516m ~ 3) was put into operation at 23:30 on September 30, 1970 and was shut down at 6:50 on February 17, 1974 and lasted for 1235 days. 11284 times, 2,347,000 tons of iron production. During production, the replacement of large and small bell two, welding repair large, small bell twice, minor repair four times, accounting for 20.5 days, the actual production of 1214 days. 7.8.9 of the shaft as a result of the cooling wall has been most of the burn-out, most of the body lining to the brick lining, furnace shell furnace shell has been severely deformed subsidence, it shut down in the furnace repair.