Investigation on steelmaking dust recycling and iron oxide red preparing

被引:2
作者
Fu, Pingfeng [1 ]
Zhang, Qiang [2 ]
机构
[1] Beijing Union Univ, Coll Arts & Sci, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China
来源
JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING | 2008年 / 15卷 / 01期
关键词
steelmaking dust; iron oxide red; wet magnetic separation; acid leaching;
D O I
10.1016/S1005-8850(08)60005-5
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
To investigate the physical and chemical properties of the steelmaking dust, wet sieve separation, XRD, SEM, EDS, and traditional chemical analysis were carried out to obtain the particle size distribution, mineralogy, morphology, and the chemical composition of the dust. The dust with a total Fe content of 64.08wt% has coarse metallic iron, magnetite and hematite grains, while fine clay minerals with a size of <38 mu m are mainly iosiderite, calcium silicate, and calcite, which are conglomerated to each other. By following the procedures of wet magnetic separation, acid leaching, and oxidization calcination, magnetic materials were recycled and further prepared as iron oxide red with a productivity of 0.54 ton per unit ton of the dust. Middle iron concentrate with an Fe content of 65.92wt% can be reused as feeding material in the ironmaking industry. Additionally, washed water from acid leaching with an Fe3+ ion content of less than 5 g(.)L(-1) was recovered as feeding water in the wet magnetic separation procedure. (C) 2008 University of Science and Technology Beijing. All rights reserved.
引用
收藏
页码:24 / 28
页数:5
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