| The blast furnace is complicated. The 1ife-span of a generation of blast furnace is associated with a variety of factors. Longevity technology of the blast furnace is the application of the comprehensive technology. It is a system engineering to lengthen the 1ife of the blast furnace.The design of blast furnace is essential, including the design of the inside form, lining, cooling system, monitoring system and control system, etc. It is a preliminary decision for blast furnace longevity. The scientific combination of the concentrate and BF operation, matching the perfect monitoring equipment is important to the blast furnace longevity.The advanced technique and the management concept are studied at longevity of BF in the world. Longevity of new ideas is put forward. It has been introduced that the structural configuration of crucible and hearth about No.4 BF in Ansteel. The copper cooling stave and the water cooling system are introduced in the bosh, belly and furnace body part, which are high heat load area. To some problem, including the operation standardization and controlling reasonable gas flow distribution, the means of statistics is used to summarize and analyze the production data. The reasonable operation system and operation parameters optimization data are put forward. It is introduced about the protection experience of No.4 BF. |
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