【摘要】 采用黄铁矿软锰矿酸浸工艺直接浸出软锰矿，浸出过程中Ｆｅ、Ｓｉ、Ａｌ等杂质残留在矿石内，形成残留物层。通过控制浸出的动力学条件，可以实现锰的选择性浸出，降低浸出液中的杂质含量。扫描电镜和电子能谱试验表明，锰的浸出过程应以未反应收缩核模型描述更多还原

【Abstract】 The manganese dioxide ore was leached with the leaching technique of FeS 2 MnO 2 H 2SO 4.The impurities Fe,Si and Al remained in the ore,forming a residue layer during the leaching process.Results showed that, by controlling the leaching conditions, the selective leaching of manganese could be realized and the impurity content of leach solution be reduced. The tests of SED and EDAX indicated that the leaching process of Mn should be described with shrinking core model.更多还原