Superconducting magnetic separation of ground steel slag powder for recovery of resources

IF 0.2 Q4 PHYSICS, APPLIED

Progress in Superconductivity and Cryogenics Pub Date : 2017-03-31 DOI:10.9714/psac.2017.19.1.022

Hee-Won Kwon, Joon-Ha Kim, D. Ha, J. Choi, Young-Hun Kim

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引用次数: 2

Abstract

2017) Abstract Steel slag has been considered as an industrial waste. A huge amount of slag is produced as a byproduct and the steel slag usually has been dumped in a landfill site. However the steel slag contains valuable resources such as iron, copper, manganese, and magnesium. Superconducting magnetic separation has been applied on recovery of the valuable resources from the steel slag and this process also has intended to reduce the waste to be dumped. Cryo-cooled Nb-Ti superconducting magnet with 100 mm bore and 600 mm of height was used as the magnetic separator. The separating efficiency was evaluated in the function of magnetic field. A steel slag was ground and analyzed for the composition. Iron containing minerals were successfully concentrated from less iron containing portion. The separation efficiency was highly dependent on the particle size giving higher separating efficiency with finer particle. The magnetic field also effects on the separation ratio. Current study showed that an appropriate grinding of slag and magnetic separation lead to the recovery of metal resources from steel slag waste rather than dumping all of the

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磨碎钢渣粉的超导磁选回收资源

摘要钢渣一直被认为是一种工业废弃物。作为副产品产生了大量的废渣，而钢渣通常被倾倒在垃圾填埋场。然而，钢渣中含有铁、铜、锰和镁等宝贵资源。将超导磁选技术应用于钢渣中有价资源的回收，减少了废渣的排土量。磁选机采用孔径为100 mm、高度为600 mm的低温冷却铌钛超导磁体。用磁场的函数来评价分离效率。对某钢渣进行了研磨和成分分析。含铁矿物成功地从含铁较少的部分浓缩。分离效率与颗粒大小密切相关，颗粒越细，分离效率越高。磁场对分离比也有影响。目前的研究表明，适当的磨渣和磁选可以使废钢渣中的金属资源得到回收，而不是全部倾倒

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来源期刊

Progress in Superconductivity and Cryogenics PHYSICS, APPLIED-

CiteScore

0.40

自引率

33.30%

发文量

期刊介绍： Progress in Superconductivity and Cryogenics is the official publication of The Korea Institute of Applied Superconductivity and Cryogenics and the Korean Superconductivity Society. It was launched in 1999, and accepts original research articles and review papers on research on superconductivity and related fields of physics, electronic devices, materials science, large-scale applications for magnets, power and energy, and cryogenics. The Journal is published quarterly in March, June, September, and December each year. Supplemental issues are published occasionally. The official title of the journal is ''Progress in Superconductivity and Cryogenics'' and the abbreviated title is ''Prog. Supercond. Cryog.'' All submitted manuscripts are peer-reviewed by two reviewers. The text must be written in English. All the articles in this journal are KCI and SCOPUS as of 2015. The URL address of the journal is http://psac.kisac.org where full text is available. This work was supported by the Korean Federation of Science and Technology Societies grant funded by the Korea government.