A method of maintaining a vessel of a converter
By controlling the processes of converter blowing, carbon extraction, steel tapping, and slag splashing, the problem of insufficient converter body maintenance was solved, resulting in a long service life of the converter body and a good top and bottom re-blowing effect, thus improving production safety and efficiency.
CN122773059APending Publication Date: 2026-09-18PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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Patent Information
- Application Number
- CN202611155267.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-31
- Publication Date
- 2026-09-18
AI Technical Summary
Technical Problem
The lack of effective maintenance methods for converter bodies in existing technologies leads to shortened equipment lifespan, increased production safety hazards, and low production efficiency.
Method used
By controlling the process in steps such as converter blowing, carbon removal, steel tapping and slag splashing, including adding heating agent, controlling the final lance position and slag composition, slag adjustment, slag splashing lance position and time, the refractory life of the converter body and the bottom blowing gas flow rate are maximized.
Benefits of technology
This achieved a long service life for the converter body and a good top and bottom reblowing effect, ensuring production safety and efficiency, extending equipment life and improving product quality.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention relates to the field of iron and steel metallurgy technology and provides a method for maintaining a converter furnace body, comprising: S1) in the converter blowing step, adding a temperature-raising agent according to the hot metal conditions and the amount of scrap steel added; the final lance position of the converter blowing is 1.2~1.3m, and the stirring time is ≥30s; S2) in the carbon removal step, controlling the final slag composition after the carbon removal blowing stops; S3) adjusting the slag according to the carbon content and oxygen content before tapping after the carbon removal is completed; S4) in the slag splashing protection step, determining the starting slag splashing lance position according to the bottom erosion of the converter furnace body or the final slag oxidation; controlling the slag splashing time to 2~4min; controlling the slag splashing rate to ≥90%; and controlling the slag retention rate to ≥90%. The converter furnace body maintenance method provided in this application, by controlling each step of the converter blowing, carbon removal, tapping, and slag splashing, ensures the service life of the converter furnace body refractory material, ensures the maximum bottom blowing gas flow, and achieves a good top and bottom combined blowing effect.
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