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| Effect of magnetic element layers in rod matrix on performance of high gradient magnetic separation |
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Received:September 25, 2013
Revised:October 09, 2013
Accepted:October 10, 2013
Published Online:January 28, 2014
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| DOI： |
| KeyWord:High gradient magnetic separation; Rod matrix; Depth; Hematite |
| Author | Institution |
| Ding Li |
Faculty of Land Resource Engineering, Kunming University of Science and Technology |
| Chen Luzheng |
Faculty of Land Resource Engineering, Kunming University of Science and Technology |
| Huang Jianxiong |
Faculty of Land Resource Engineering, Kunming University of Science and Technology |
| Zeng Jianwu |
Faculty of Land Resource Engineering, Kunming University of Science and Technology |
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| Abstract: |
| High gradient magnetic separation is widely applied for the concentration of fine weakly magnetic metallic ores such as oxidized iron ore, ilmenite, wolframite, etc., and for the purification of non-magnetic ores such as kaolin, quartz and feldspar. Rod matrix, as carrier for magnetic particles in high gradient magnetic separation, its configuration such as arrangement of rod elements, space between rod elements, distance between layers of rod elements and layers of rod elements in the matrix has a dominant control on the distribution of magnetic field and on the dynamic of magnetic particles in the matrix, thereby producing a significant effect on the separation performance. Pulsating high gradient magnetic separation of ultrafine hematite was investigated to study the effect of layers of rod elements on the performance, through Slice-Matrix Analysis (SMA) method. The results of investigation indicates that for a given layer of matirx element, with increase in magnetic induction, the capture capability of the matrix for magnetic particles enhances, with increase in concentrate mass and iron recovery and decrease in concentrate and tailings grades, and no obvious change in separation efficiency; however, with increase in the layers, the separation |
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