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| EXPERIMENTAL RESEARCH ON MINERAL PROCESSING TEST OF LOW GRADE MAGNETITE ORE IN YUNNAN PROVINCE |
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Received:June 09, 2011
Published Online:January 04, 2012
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| DOI：10.3969/j.issn.1005-7854.2011.04.011 |
| KeyWord:low-grade magnetite； low gradient magnetic separation；desulfurize |
| Author | Institution |
| XIE Feng |
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, China |
| TONG Xiong |
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, China |
| LV Jin-fang |
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, China |
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| Abstract: |
| The iron minerals in Yunnan iron ore occur mainly in form of magnetite, with fine disseminated particles and low grade of iron (20.18%) . The harmful element sulphur exceeds standard range and can be sorted as refractory ore .Through study on mineral ore properties, the process of stage grinding- stage separation-reverse floatation is proposed to process the ore and the iron concentrate with iron grade of 64.15%, recovery rate of 70.67% and sulfur grade of 0.26% is obtained, which solves the problem of low grade iron resources, fine disseminated particles and high sulfur grade. |
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