摘要
进行了机械活化后黄铜矿的物理化学性质变化及其对浸出速度影响的试验．结果表明，黄铜矿在行星磨中机械活化后晶格常数发生变化，晶格畸变增加，化学活性提高，与ＨＮＯ３反应的速度加快，经行星磨活化４０ｍｉｎ后黄铜矿与ＨＮＯ３反应的活化能由未活化时的８１．５ｋＪ·ｍｏｌ－１降至６５．３ｋＪ·ｍｏｌ－１，从而可在较低温度及较低浸出剂浓度下实现其有效浸出．
おhe changes in physical chemical properties of chalcopyrite after mechanically activated in planetary centrifugal mill and its effect on the chalcopyrite leaching rate were studied.The experment results indicate that activation results in the increase of chalcopyrite′s activation lattice constant,lattice distortion as well as crystal defect concentration,and so the rate of chemical reaction with HNO3 was enhanced greatly.The apparent activation engery for the leaching of chalcopyrite in HNO3 solution decreases from 815 kJ·mol-1 to 653 kJ·mol-1 after activated 40 min which make it possible to get high leaching rate of chalcoprite at low temperature and low concentration of leahing reagent.
出处
《中南工业大学学报》
CSCD
北大核心
1998年第1期28-31,共4页
Journal of Central South University of Technology(Natural Science)
基金
国家自然科学基金
