Oxidizing agent was prepared by means of anhydrous manganous acetate dissolved in glacial acetic acid and oxidized to divalent manganic salt by potassium permanganate.

氧化剂的制造是将二价无水醋酸锰溶于冰醋酸中，用高锰酸钾将其氧化成三价醋酸锰。

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In view of the problems above, this paper put forward a new craft route, which was preparing manganous sulfate from rhodochrosite by acid-leaching as raw material to get manganic manganous oxide.

本课题针对上述问题，采用酸浸贫菱锰矿制备硫酸锰进而制备生成四氧化三锰的工艺路线。

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