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Studies of the Recovery of Iron Content from Iron and Steel-Making Slags by Magnetic Separation  

Ban Bong-Chan (순천대학교 재료ㆍ금속공학과)
Yu Sung-Nam (순천대학교 재료ㆍ금속공학과)
Kim Dong-Su (이화여자대학교 환경공학과)
Publication Information
Resources Recycling / v.12, no.5, 2003 , pp. 36-41 More about this Journal
Abstract
Although slag has an enough potential as the secondary resources due to its high content of iron, quite a large amount of slags are simply landfilled when market prices of iron and steel are not so beneficial. The purpose of this study is to investigate the basic characteristics regarding the recovery of iron content from slag by magnetic separation method for the enhancement of its recycling rate. Three kinds of slags such as blast furnace slag, water-cooled converter slag, and air-cooled converter slag were tested taking the strength of magnetic field, revolving speed of drum, and feeding rate of slag as the influential factors on the magnetic separation. For blast furnace slag, the recovery of iron was observed to increase as drum speed and feeding rate were lowered. For water-cooled converter slag, iron recovery was raised as feeding rate was increased and drum speed was lowered. Also, finer slag particles were observed to be more favorable for the higher recovery of iron content. Regarding air-cooled converter slags, higher iron recovery was accomplished when both feeding rate and drum speed were increased or decreased. In addition, when the magnetic field strength was increased the iron recovery was raised, however, the iron grade of separated product was observed to diminish because of the co-separation of impurities.
Keywords
BF slag; LD slag; magnetic separation; recovery of iron;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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