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| Study on effect of arrangement of rod matrix on performance of high gradient magnetic separation |
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Received:May 19, 2013
Revised:May 19, 2013
Accepted:May 20, 2013
Published Online:March 24, 2014
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| DOI： |
| KeyWord:High gradient magnetic separation; Rod matrix; Arrangement; Hematite |
| Author | Institution |
| Huang Jian-xiong |
Kunming University of Science and Technology |
| Chen Lu-zheng |
Kunming University of Science and Technology |
| Ding Li |
Kunming University of Science and Technology |
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| Abstract: |
| High gradient magnetic separation (HGMS) of rod matrix is widely applied for the concentration of fine weakly magnetic minerals such as oxidized iron ore, ilmenite, wolframite, etc., and the arrangement of rod elements in the matrix as carrier for magnetic particles has a dominant control on the distribution of magnetic field and the dynamic of magnetic particles in the matrix, thereby producing a significant effect the HGMS performance. Pulsating HGMS of ultrafine hematite was investigated to study the effect of the arrangement on the performance using Slice-Matrix Analysis. The results of investigation indicates that the arrangement has a significant effect on the performance; the intersecting arrangement is superior to the rectangular one and achieves a higher concentrate grade, recovery and separation efficiency; with increase in spacing between rod elements in a slice matrix and decrease in number of slice matrixes, the capture capability of the elements for magnetic particles deteriorates, resulting in the increase of tailings grade and the decrease of separation efficiency, but a negligible effect on concentrate grade. It is thus concluded that the combinatorial optimization of rod matrix significantly improves the performance of HGMS. |
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