Abstract: With optimized process such as dry masonry brickwork joint ≤0.5 mm,MgO content in magnesium-carbon brick ≥75%,MgO content in refining slag≤20%,VD treating time decreasing from 45 min to 30 min and refining time with low viscosity slag decreasing from 45 min to 15min,the service life of slag line brick in an 100 t LF(VD)umit by using double slag line operation method for production of 0.70~0.75C steel cord of tyre increased from 15 heats to 27 heats.

Key words: Ladle Furnace, , Slag Line Brick, , Etching, , Technology Measure

摘要： 通过优化工艺：干砌砖缝≤0.5 mm,镁碳砖MgO含量≥75%,精炼渣中MgO含量≤20%,VD处理时 间由45 min降低到30 min,低粘度熔渣精炼时间由45 min降低至15 min以及用双渣线操作法，生产0.70～0.75C 帘线钢时，100 t LF(VD)的钢包渣线砖的使用寿命由15次提高到27次。

关键词: 钢包炉, , 渣线砖, , 侵蚀, , 工艺措施