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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (2): 655-662.DOI: 10.16552/j.cnki.issn1001-1625.2025.0832

• 耐火材料 • 上一篇    下一篇

不同碱度精炼渣对镁碳耐火材料的侵蚀行为

叶玉奎1(), 雷长坤2(), 廖家明1, 张鑫2, 胡天增2, 任博2, 王恩会2(), 侯新梅2   

  1. 1.中天钢铁集团有限公司,常州 213011
    2.北京科技大学碳中和研究院,北京 100083
  • 收稿日期:2025-08-18 修订日期:2025-09-23 出版日期:2026-02-20 发布日期:2026-03-09
  • 通信作者: 雷长坤,博士,助理研究员。E-mail:xjdlck@163.com
    王恩会,博士,研究员。E-mail:wangenhui@ustb.edu.cn
  • 作者简介:叶玉奎(1979—),男,高级工程师。主要从事特殊钢生产、技术和研发等方面的研究。E-mail: 3076318@qq.com
  • 基金资助:
    国家自然科学基金杰出青年基金(52025041);国家自然科学基金(52450003);中国博士后科学基金(GZC20252393);中国博士后科学基金(2025T180025)

Erosion Behavior of Refining Slag with Different Basicities on Magnesia-Carbon Refractories

YE Yukui1(), LEI Changkun2(), LIAO Jiaming1, ZHANG Xin2, HU Tianzeng2, REN Bo2, WANG Enhui2(), HOU Xinmei2   

  1. 1. Zenith Steel Group Co. ,Ltd. ,Changzhou 213011,China
    2. Institute of Carbon Neutrality,University of Science and Technology Beijing,Beijing 100083,China
  • Received:2025-08-18 Revised:2025-09-23 Published:2026-02-20 Online:2026-03-09

摘要:

本研究制备三种不同碱度(R=0.8、1.0、1.2)的精炼渣,结合热力学计算、表面张力测试和动态抗渣试验,系统研究了碱度对镁碳砖抗渣侵蚀性能的影响。结果表明,随着碱度提高,精炼渣黏度降低,同时表面张力显著增大。精炼渣S1(R=0.8)中氧化镁溶解度较大,因此镁碳砖的蚀损较为严重。精炼渣S3(R=1.2)中CaO含量的增加导致其黏度降低和表面张力增大,渗透深度相较于精炼渣S1(R=0.8)增加了69.14%,但耐火材料的主体结构完整性保持相对较好。适度提高精炼渣碱度能够延长镁碳耐火材料使用寿命,但在实际应用中还需综合考虑其对于钢中夹杂物的影响。

关键词: 帘线钢, 精炼渣, 镁碳耐火材料, 抗渣侵蚀性能, 黏度, 表面张力

Abstract:

Three types refining slag with different basicities (R = 0.8, 1.0, and 1.2) were prepared. The influence of basicity on resistance to slag erosion of MgO-C bricks was systematically investigated using thermodynamic calculations, surface tension measurements and dynamic anti-slag test. The results show that with the increase of basicity, the viscosity of slag decreases and the surface tension increases significantly. In refining slag S1 (R=0.8), higher solubility of MgO results in more severe erosion of MgO-C refractories. For refining slag S3 (R=1.2), increased CaO content causes reduced viscosity and elevated surface tension, which enhances slag penetration by 69.14% compared to refining slag S1 (R=0.8). However, the structural integrity of refractory is relatively well-preserved. This study demonstrates that moderately increasing refining slag basicity can extend the service life of MgO-C refractories. However, in practical application, it is necessary to comprehensively consider its influence on inclusions in steel.

Key words: cord steel, refining slag, magnesia-carbon refractory, resistance to slag erosion, viscosity, surface tension

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