Extraction And Refg Of Manganese Dioxide Ore

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(1) The provision of a new and improved method for the extraction of manganese sulphate solution from manganese ore. (2) The provision of a new and improved method for refg manganese sulphate solution whereby iron, alumum, or other contamatg materials present the solution may be elimated.

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The most convenient conditions for the preferential extraction of manganese the reductive leachg process were as follows: a particle size of approximately 150 μm, Na 2 SO 3 /ore ratio mataed at 0.92, H 2 SO 4 addition of 89%, with a liquid/solid ratio, temperature and reaction time of 5:1, 30 °C and 15 m, respectively.

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