PRACTICE OF ANNUAL REPAIR AND DISCHARGE OF RESIDUAL IRON IN 2 500 m3 BLAST FURNACE OF CHENGDE VANADIUM AND TITANIUM
The NO.A 2 500 m3 blast furnace at Chengde Vanadium and Titanium New Materials Co.,Ltd.'s ironmaking division experienced severe erosion from prolonged operation leading to decreased production efficiency and potential safety hazards.To address this issue,an annual repair plan was implemented involving innovative design calculations resulting in an efficient residual slag iron discharge scheme tailored for large-scale furnaces along with a specialized slag runner system installation.This approach ensures safe release and removal of accumulated residual iron slag within a short timeframe by precisely opening the furnace cylinder.The successful implementation resolves challenges related to tight timelines during shutdown maintenance,limited construction space around residual openings,numerous obstacles within work areas,as well as precise positioning difficulties and ultimately improving discharge efficiency while significantly reducing overall construction periods during blast furnace overhauls thereby paving new avenues for capital control and cost management.
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