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    Oxidative Leaching of Low-Grade Pyrolusite in Alkaline Solutions to Produce Potassium Manganate

    In this study, the oxidation of low-grade pyrolusite to potassium manganate in alkaline solutions under O2 pressure has been investigated. The effects of different conditions on the high-grade and low-grade pyrol...

    Fenglan Luo, Hongyan **e, Huixin **, Chenzhe Li… in Mining, Metallurgy & Exploration (2023)