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中南大学学报(自然科学版)

Journal of Central South University

第41卷    第6期    总第196期    2010年12月

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文章编号:1672-7207(2010)06-2053-07
含铁炉料在高炉各区的冶炼特性
赵改革,范晓慧,陈许玲,袁礼顺,甘敏

(中南大学 资源加工与生物工程学院,湖南 长沙,410083)

摘 要: 为了掌握不同含铁炉料在高炉冶炼过程的行为特性以及炉料之间的相互反应性,通过模拟高炉各区的温度和气氛条件,系统研究不同含铁炉料(烧结矿、球团矿和块矿)及综合炉料的冶炼特性,分析综合炉料冶金性能与单一炉料冶炼特性的关系。研究结果表明:烧结矿的低温还原粉化性能较差,球团矿较好,粒径大于3.15 mm的球团矿还原指数达到92%以上;烧结矿的还原性较好,还原度都在80%以上,球团矿的还原性次之,块矿的还原性较差;综合含铁炉料的还原性和低温还原粉化性能存在叠加性,综合炉料的高温软熔性能不存在叠加性;高炉炉料结构的合理性由含铁炉料的自身性能和炉料间反应性决定。

 

关键字: 高炉炉料;炉料结构;还原性;低温还原粉化性;软熔性

Metallurgical properties of ferrous burdens in blast furnace
ZHAO Gai-ge, FAN Xiao-hui, CHEN Xu-ling, YUAN Li-shun, GAN Min

School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China

Abstract:In order to understand the behavior features of iron burdens and reactivity among burdens in the blast furnace, the metallurgical properties of sinters, pellets, lumps and mixed burdens were studied by simulating temperature and atmosphere of blast furnace. On this presupposition, the relationship between single burden and mixed burden was analyzed. The results show that the reduction disintegration of sinter is the worst, the best one is pellets, and their low temperature reduction degradation indexes (+3.15 mm) reach above 92%. The reducibility of sinters is better than that of pellets, and their reduction indexes reach above 80%. The reducibility of lump is the worst. It is superimposed for mix burden in reducibility and reduction disintegration, but not for softening and melting. Therefore, the reasonable burden structure is determined by two factors, one is the single burden characters, and the other is the reactivity among burdens.

 

Key words: blast furnace burden; burden structure; reducibility; reduction disintegration; softening and melting

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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