一种钢包用引流砂及其填充方法

By combining a multi-layered diversion sand structure with rare earth oxides, the problem of reduced steel purity caused by diversion sand was solved, achieving high self-opening rate and high-purity steel production, and reducing production costs and risks.

CN120480168BActive Publication Date: 2026-07-17ANGANG STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANGANG STEEL CO LTD
Filing Date
2025-04-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing diversion sand can easily lead to a decrease in the purity of molten steel during the steelmaking process, and even with an increase in the self-opening rate, it is impossible to completely avoid the residual effects on the quality of molten steel. Forced diversion increases costs and risks.

Method used

A multi-layered filling structure consisting of first, second, and third diversion sands is adopted. The first diversion sand is used for flow diversion and purification, the second diversion sand supports the third diversion sand to form a stable sintering layer, and the third diversion sand comes into contact with the molten steel to form an arch-shaped sintering layer. Combined with rare earth oxides, the oxygen and sulfur content is reduced, and sintering is promoted by baking.

Benefits of technology

It achieved 100% self-opening rate, reduced oxide inclusions, improved the purity and quality of molten steel, and reduced production costs and risks.

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Abstract

本发明公开一种钢包用引流砂及其填充方法，属于炼钢技术领域。所述引流砂填装方式为由钢包底部向上依次为第一引流砂、第二引流砂、第三引流砂；第一引流砂的原料质量含量为：石灰石50％～60％，氧化镁10％～20％，氧化钙20％～30％；第二引流砂的原料质量含量为：稀土氧化物≤10％，氧化镁20％～30％，石灰石20％～30％，碳粉5％～10％，二氧化硅20％～30％；第三引流砂的原料质量含量为：三氧化二铁10％～20％，二氧化硅10％～20％，三氧化二铬30％～40％，氧化铝10％～20％，氧化钙10％～20％。本发明引流砂自开率达到100％，同时，第一引流砂进入钢液后能够形成微小气泡和氧化钙，捕捉钢液中夹杂物并上浮到中包渣层的作用，起到钢液净化作用。
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