Abstract：The breakage of hearth and body on No.4 BF qua selfsupport pattern at Jisteel is described since production for 9 years . The blast furnace keeps the preferable and safe production state by strengthening equipment lookover and maintenance, adjusting operation system, improving coal gas flow distribution, stabilizing BF running, perfecting protection of BF with limonite in the burden, giving attention to management of casthouse and adopting beneficiated material etc..
余志彦，张国营. 济钢4号高炉炉役后期操作[J]. 中国冶金, 2006, 16(8): 1-1.
YU Zhiyan，ZHANG Guoying. Operation of No.4 BF at Jisteel During Late Campaign. China Metallurgy, 2006, 16(8): 1-1.
