铁氧化物“精细还原-非熔态分离”新工艺实验研究  

A New Technic Experimental Study on Precise Reduction of Iron Oxide-separation of Non-molten of Iron Oxide

作　　者：陈培钰[1,2] 高金涛[1] 李士琦[1] 张颜庭[1] 刘润藻[1] 张建良[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]天津钢管集团股份有限公司,天津300201

出　　处：《四川大学学报（工程科学版）》2011年第5期191-196,共6页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家科技支撑计划资助项目(2006BAE03A10)

摘　　要：基于对现行高炉炼铁-氧气转炉炼钢生产工艺的讨论,提出了"铁氧化物精细还原-非熔态分离"的新工艺。研究中设计、改进了精细还原实验装置,分别设计L16(215)和L4(23)正交表进行了喀左磁铁矿和某厂炼钢粉尘的精细还原实验以研究微米级铁氧化物的还原特性,实验结果表明:在1 000℃以下,使用纯H2或CO对微米级粒度铁氧化物进行精细还原,能实现铁氧化物向金属铁的高度转变。对铁氧化物还原产物解离性、烧结性、铁磁性的研究表明,较低的还原温度使得铁氧化物于非熔化状态下被还原成磁性金属铁,未有烧结现象发生,还原产物中铁元素与杂质元素分别存在,为采用物理方法将铁氧化物精细还原产物中磁性铁元素与杂质元素的进一步分离提供了依据。According to the prevailing process of blast-furnace ironmaking and oxygen-converter steelmaking,a new technique named ＂precise reduction of Iron Oxide-separation of non-molten＂ was brought up.The equipment of the precise reduction was designed and improved,and L16（2^15） and L4（2^3）orthogonal table was planed,which were used in the experimental study of the precise reduction of magnetite in Kazuo and the steel dust of a factory.The results of the precise reduction showed that in the atmosphere of pure H2 and 100% CO,the iron oxide at the micron size can be reduced to metallic iron with high reduction degree.The study on dissociation,sintering,iron magnetic for the precise reduction product of iron oxide showed that the lower reduction temperature makes it possible for the iron oxide reduced to the magnetic metallic iron at the non-melting state.The reduction of product keeps power state and its interparticle sintering does not occur,which means that it is reasonable to separate iron from other impurity elements through the physical method.

关 键 词：精细还原 非熔态分离 铁矿粉 炼钢粉尘 

分 类 号：TF03[冶金工程—冶金物理化学]