Journal article
Oxidative precipitation of manganese with SO2/O2 and separation from cobalt and nickel
Hydrometallurgy, Vol.63(2), pp.127-135
2002
Abstract
The oxidation of Mn(II) and precipitation as MnO2/Mn2O3occurs spontaneously using SO2/O2 gas mixtures in the pH range 1-6 and temperature range 25-80 °C. The rate of Mn(II) oxidation with SO2/O2 is first order with respect to SO2 partial pressure up to 5.7% SO2 at 80 °C and half order with respect to [H+]. The rate of oxidation of Mn(II) is slow at pH<3 and increases rapidly at pH>4. Any Fe(II) is oxidised and precipitated before Mn(II). Low concentrations of manganese (0.01 M) can be selectively oxidised and precipitated from cobalt and nickel solutions at pH 3-4 with less than 1% co-precipitation of cobalt and nickel in the laboratory batch tests. The selectivity of manganese precipitation at pH 3-4 is consistent with thermodynamic data for the Mn-Ni/Co-H2O systems.
Details
- Title
- Oxidative precipitation of manganese with SO2/O2 and separation from cobalt and nickel
- Authors/Creators
- W. Zhang (Author/Creator)P. Singh (Author/Creator)D. Muir (Author/Creator)
- Publication Details
- Hydrometallurgy, Vol.63(2), pp.127-135
- Publisher
- Elsevier BV
- Identifiers
- 991005540376007891
- Copyright
- © 2002 Elsevier Science B.V.
- Murdoch Affiliation
- School of Mathematical and Physical Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Citation topics
- 7 Engineering & Materials Science
- 7.229 Mineral & Metal Processing
- 7.229.774 Bioleaching
- Web Of Science research areas
- Metallurgy & Metallurgical Engineering
- ESI research areas
- Materials Science