(1.中南工業(yè)大學(xué)礦物系，2.中南工業(yè)大學(xué)冶化所，長(zhǎng)沙410083)
摘 要: 采用黃鐵礦-軟錳礦酸浸工藝直接浸出軟錳礦，浸出過程中 Fe、Si 、Al等雜質(zhì)殘留在礦石內(nèi)，形成殘留物層。通過控制浸出的動(dòng)力學(xué)條件，可以實(shí)現(xiàn)錳的選擇性浸出，降低浸出液中的雜質(zhì)含量。掃描電鏡和電子能譜試驗(yàn)表明，錳的浸出過程應(yīng)以未反應(yīng)收縮核模型描述。
關(guān)鍵字: 軟錳礦 浸出 動(dòng)力學(xué)
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
