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Extraction of manganese from pyrolusite ore

Mar 27, 2015 The sample of low-grade pyrolusite was obtained from Hunan, China. The ore sample was crushed and grounded into a powder with particles smaller than 74 μm.The main chemical phase analysis (as listed in Table II) of the pyrolusite sample showed that the manganese was mainly in the form of MnO 2 and its content was up to 38.92%. XRD patterns (Fig. 1b) showed that manganese

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