Control device for bottom argon blowing of continuous casting ladle rotary table and method for removing inclusions by soft blowing

By installing an automatic argon blowing docking mechanism and intelligent control device on the continuous casting ladle rotary table, automatic docking of bottom argon blowing in the ladle and intelligent adjustment of argon flow rate were achieved. This solved the problem of insufficient soft blowing time in the ladle during the later stage of LF refining, improved the inclusion removal rate and steelmaking capacity, and reduced material costs.

CN115780753BActive Publication Date: 2026-06-12LAIWU STEEL YINSHAN SECTION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LAIWU STEEL YINSHAN SECTION CO LTD
Filing Date
2022-11-08
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In existing technologies, the ladle soft blowing time in the later stage of LF refining is insufficient, which affects the removal rate of inclusions. Furthermore, the gas source outlet design of the bottom-blown permeable brick in the ladle is unsafe, making it difficult to promote industrialization.

⚗Method used

An automatic argon blowing docking mechanism and an intelligent control switching device were designed to realize the automatic docking of bottom argon blowing on the continuous casting ladle swivel table and the intelligent control of argon blowing on the swivel arm. Small-flow static and dynamic soft blowing are adopted, and the argon flow rate is automatically adjusted by combining a PLC system and a molten steel weighing system.

🎯Benefits of technology

It improved the removal rate of inclusions, reduced the temperature drop of molten steel, solved the bottleneck problem of long LF refining time, increased steelmaking capacity, simplified the installation process, and reduced material costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of continuous casting process in steel metallurgy, in particular to a continuous casting ladle rotary table bottom argon blowing control device and a soft blowing inclusion removal method, which is provided with an argon blowing automatic butt joint mechanism and an argon blowing intelligent control switching device, realizes automatic butt joint of the continuous casting ladle rotary table ladle bottom argon blowing and automatic switching of the rotary arm argon blowing intelligent control mode, uses the existing ladle bottom blowing gas permeable brick to realize small flow static soft blowing in the pouring position of the continuous casting ladle rotary table and small flow dynamic soft blowing in the pouring process, completely replaces the existing technology LF refining later stage ladle soft blowing, overcomes the bottleneck problem of long LF refining time and the restriction of steelmaking production capacity improvement, improves the inclusion removal rate of the ladle bottom blowing gas permeable brick soft blowing, and improves the molten steel quality.
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