Practice of Delayed Air Resumption Operation in Scheduled Maintenance of No.8 Blast Furnace at Shaogang
The No.8 3 200 m3 blast furnace of SISG is scheduled to be repaired for 28 hours,and the main control project is to replace the No.4 hot air valve.Due to the influence of the removal of the hot blast valve flange lining,the removal of hot blast valve is difficult,resulting in the delay of the blast furnace re blowing for 18 hours.A detailed re-blowing scheme is formulated,and the blast furnace operation is carefully organized to ensure the overall smooth re blowing,which also verifies the rapid response ability of SISG iron making to abnormal conditions.The process accident is eliminated and the furnace condition is restored quickly and safely.
blast furnacedelay the resumption of windsafetyrestore furnace condition
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