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| Experimental study on recovery of limonite from a cyaninated residue of oxidize ore with PHGMS technology |
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Received:November 26, 2021
Revised:December 08, 2021
Accepted:December 14, 2021
Published Online:August 17, 2022
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| DOI： |
| KeyWord:Cyanide residue; Pulsating high gradient magnetic separation; Limonite; Iron recovery |
| Author | Institution |
| Peng Shi-wen |
Faculty of Land and Resource Engineering,Kunming University of Science and Technology,Kunming |
| Gao Qi-fang |
Yunnan Gold Mining Group Co,Ltd,Kunming |
| Jiang Ya-xiong |
Faculty of Land and Resource Engineering,Kunming University of Science and Technology,Kunming |
| Nie Zu-ming |
Heqing Beiya Mining Co,Ltd,Dali |
| Xian Yong-jun |
Faculty of Land and Resource Engineering,Kunming University of Science and Technology,Kunming |
| Xiong Yu-nong |
Faculty of Land and Resource Engineering,Kunming University of Science and Technology,Kunming |
| Chen Lu-zheng |
Faculty of Land and Resource Engineering,Kunming University of Science and Technology,Kunming |
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| Abstract: |
| The tailings of a cyanide residue from a low intensity magnetic separation process for recovery of magnetite in Yunnan province, still contains a large number of limonite. However, the residue tailings has a low iron grade assaying 20.42%, and the iron distribution of limonite reaches as high as 94.76%; however, they are ultra-finely distributed and seriously slimed, resulting in the difficulty for limonite recovery. In this study, pulsating high gradient magnetic separation was used to recover the limonite minerals from the tailings, and through a roughing-cleaning process a limonite concentrate assaying 47.12% Fe with 51.57% recovery was produced, at a mass yield of 22.35%, under the optimized separation conditions. The recovery of limonite with pulsating high gradient magnetic separation has such advantages as low cost, large throughput and excellent separation performance, and thus it provides an effective technical solution for the recovery of limonite from the low-grade cyanide residue. |
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