Low Fuel Ratio Production Practice of Shaogang 3 200 m3 Blast Furnace
The No.8 blast furnace of Shaogang was shut down for intermediate maintenance on December 25,2020,with a focus on replacing the damaged cooling walls of sections 8 and 9.At the same time,the furnace was poured as a whole to quickly restore the furnace shape.Repair the hot air stove online by increasing the air temperature from 1 160 ℃ to 1 200 ℃.It has innovate ideas,and achieved rapid repair of the blast furnace type and online repair of the hot blast furnace.Through measures such as strengthening the quality control of raw materials,improving the operational capacity of the blast furnace,and strengthening the management of pre furnace tapping,the blast furnace condition has been stable and smooth for a long period of time.The technical and economic indicators of the blast furnace have been significantly improved,and the fuel ratio has decreased from 506 kg/t to 499 kg/t,achieving the effect of low fuel ratio production.
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