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。
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.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第6期2053-2059,共7页
Journal of Central South University:Science and Technology
基金
教育部新世纪优秀人才支持计划项目(NCET-05-0630)
关键词
高炉炉料
炉料结构
还原性
低温还原粉化性
软熔性
blast furnace burden
burden structure
reducibility
reduction disintegration
softening and melting
