+++3 статьи science direct

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1. Oxidative precipitation of manganese with SO2/O2 and separation from cobalt and nickel
Wensheng Zhang, Pritam Singh, David Muir
Hydrometallurgy
Volume 63, Issue 2, February 2002, Pages 127-135

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http://dx.doi.org/10.1016/S0304-386X(01)00205-5

2. Copper catalysed leaching of magnetite in aqueous sulfur dioxide
J.J. Byerley, G.L. Rempel and G.F. Garrido
Hydrometallurgy
Volume 4, Issue 4, August 1979, Pages 317-336

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http://dx.doi.org/10.1016/0304-386X(79)90031-8

3. Kinetics of the reduction of MnO2 with Fe2+ ions in acidic solutions
T Tekin and M Bayramoglu
Hydrometallurgy
Volume 32, Issue 1, January 1993, Pages 9-20

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http://dx.doi.org/10.1016/0304-386X(93)90053-G

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