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- Title
Recovery of Manganese Ore Tailings by High-Gradient Magnetic Separation and Hydrometallurgical Method.
- Authors
Zhang, Xiufeng; Tan, Xiumin; Yi, Yuejun; Liu, Weizao; Li, Chun
- Abstract
With the depletion of high-grade manganese ores, Mn ore tailings are considered valuable secondary resources. In this study, a process combining high-gradient magnetic separation (HGMS) with hydrometallurgical methods is proposed to recycle fine-grained Mn tailings. The Mn tailings were treated by HGMS at 12,500 G to obtain a Mn concentrate of 30% Mn with the recovery efficiency of 64%. The Mn concentrate could be used in the ferromanganese industry. To recover Mn further, the nonmagnetic fraction was leached by SO in an HSO solution. Hydrogen peroxide was added to the leachate to oxidize Fe to Fe, and the solution pH was adjusted to 5.0-5.5 with ammonia to remove Al, Fe, and Si impurities. The purified solution was reacted with NHHCO, and a saleable product of MnCO with 97.9% purity was obtained. The combined process can be applied to Mn recovery from finely dispersed weakly magnetic Mn ores or tailings.
- Subjects
MANGANESE ores; METAL tailings; MAGNETIC separation; HYDROMETALLURGY; HYDROGEN peroxide; AMMONIA; METAL inclusions
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2017, Vol 69, Issue 11, p2352
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-017-2521-5