为了改变优质电池原料短缺的状况和充分利用低品位锰矿资源 ,研究了天然低品位二氧化锰矿在添加少量无污染添加剂的条件下 ,在 71 0℃下焙烧 2h ,可使矿石中MnO2 转化为Mn2 O3 .其转化率达 99 5 %以上 .同时对焙烧产物进行岐化反应所用的酸介质、酸用量和反应时间与歧化作用的关系进行了研究 .并对氯酸钠氧化歧化液中Mn2 + 的氧化效果进行了分析 ,提出了分步氧化歧化液中Mn2 + 的新工艺 . In order to change the situation of shortage of high-quality battery materials and make full use of low-grade manganese ore resources, natural low-grade manganese dioxide ore was roasted at 71 0 ℃ for 2h with a small amount of non-polluting additives, so MnO2 in the ore was converted to Mn2 O3, the conversion rate reached more than 99.5% .At the same time, the acid medium used for the disproportionation of the calcined product, the amount of acid and the relationship between the reaction time and the disproportionation were studied.Mn2 + The oxidation effect was analyzed and a new technology of Mn2 + in stepwise oxidation of disproportionation was proposed.