(1.中南工业大学矿物系，2.中南工业大学冶化所，长沙410083)
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。
关键字: 软锰矿 浸出 动力学
ORE WITH TWO ORE METHOD
（1.Department of Mineral Engineering ,.Institute of Metallurgical
2.Physicochemistry and Materials,Central South University of Technology,Changsha 410083）
Abstract:The manganese dioxide ore was leached with the leaching technique of FeS2-MnO2-H2SO4.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.
Key words: manganese dioxide ore leaching kinetics
