金属学报  1980, Vol. 16 Issue (2): 231-261

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我国氧气转炉炉衬材料技术发展的几个方面

钟香崇

洛阳耐火材料研究所

SOME ASPECTS IN THE TECHNICAL DEVELOPMENTS OF LD REFRACTORIES IN CHINA

Zhong Xiangchong (Chung Heung-sung) Luoyang Institute of Refractory Research

钟香崇. 我国氧气转炉炉衬材料技术发展的几个方面[J]. 金属学报, 1980, 16(2): 231-261.
. SOME ASPECTS IN THE TECHNICAL DEVELOPMENTS OF LD REFRACTORIES IN CHINA[J]. Acta Metall Sin, 1980, 16(2): 231-261.

摘要 参考文献 相关文章 Metrics 全文: PDF(2644 KB)   摘要: 近两年多来,我国转炉炉龄有显著提高,已有若干超过2000炉的炉役.首钢的平均炉龄已在1000炉以上.改善炉衬材料质量,对提高炉龄起决定性作用. 原料采用天然白云石和镁质白云石.实践说明:这类原料是制造转炉炉衬的适当材料,砖的性能可以满足要求,可以获得高炉龄. 采用二步煅烧法制备纯度较高的白云石和镁质白云石熟料,能降低烧结温度约100—200℃.熟料组成和结构均匀,抗水化和抗渣蚀性能大为改善. 以这种高纯熟料为基础,发展了烧成油浸砖和轻烧油浸砖,实行综合砌炉,炉龄可以大幅度提高. 根据转炉炉渣对炉衬材料侵蚀机理的试验结果,认为炉衬损毁过程首先是碳的氧化,脱碳后主要是化学侵蚀.基本上可以分为两个阶段.即初期酸性渣侵蚀和后期高温下高氧化铁渣的侵蚀.抗渣试验表明,合成镁质白云石对酸性渣和高铁渣的抗侵蚀性都很好. Abstract：During the past two and a half years, lining lives of LD converters in Chinahave markedly increased with everal ampaigns exceeding 2000 heats. The averageLD lining life of the Capital Iron and Steel Company has surpassed 1000 heats.Improving the quality of refractory materials used has played a decisive role inthis increase. It has been proved hat natural dolomite and magnesitic dolomite are suitableraw materials for LD lining; the technical properties of bricks ade from them arequite satisfactory and high lining life can be achieved. A two-stage calcination process has been dopted or the preparation of highpurity dolomite (or magnesitic dolomite) clinker, by which the sintering tempera-ture can be owered 100--200℃. The clinker thus produced possesses uniform com-position and structure as well as improved ydration-resistant and slag-resistant pro-perties. Tar-impregnated burnt brick and tar-impregnated tempered block based n ighpurity clinkers have been developed for zoned lining and considerable increase inLD lining life has been attained. ased on the study of the wear mechanism of LD refractories by slags, it ispostulated that the process consists of ecarburization followed by chemical cor-rosion, which proceeds in two stages-attack by the initial acidic slag and then t-tack by the high ferrous slag at high temperatures. Slag resistance tests have shownthat synthesized magnesitic lomite xhibits superior resistance to both acidic andferrous-bearing slags. 收稿日期: 1980-02-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 钟香崇 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1980/V16/I2/231 [1] Halm, L., J. Brit. Ceram. Soc., 7 (1970) , 42． [2] Hedley, C. S., Iron Steel, 33 (1960) , 272． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed