采用循环伏安及动电位极化方法研究黄铜矿在甘氨酸介质中的浸出反应机理及动力学.使用黄铜精矿-碳糊电极研究pH值(9～12),温度(30～90℃)及甘氨酸浓度(0～2 mol/L)对腐蚀电流密度、腐蚀电位及循环伏安曲线的影响.结果显示,甘氨酸浓度从0增加到2 mol/L导致氧化峰电流密度增加;在相同条件下,腐蚀电流密度从约28μA/cm2增加至约89μA/cm2,同时腐蚀电位由-80 mV降至-130 mV.在温度不高于60℃的条件下,电流密度随温度的增加而增加;当温度高于60℃ 时,电流密度随温度增加而降低.电流密度随pH值的变化与温度相似,当pH值从9增至10.5时电流密度增加,pH值高于10.5时电流密度降低.此外,铜氧化物及铁氧化物的热力学稳定性在较高温度下增加.“,”Cyclic voltammetry and potentiodynamic polarization analyses were utilized to investigate the mechanism and kinetics of glycine leaching reactions for chalcopyrite. The effects of pH (9-12), temperature (30-90 ℃) and glycine concentration (0-2 mol/L) on corrosion current density, corrosion potential and cyclic voltammograms were investigated using chalcopyrite concentrate-carbon paste electrodes. Results showed that an increase in the glycine concentration from 0 to 2 mol/L led to an increased oxidation peak current density. Under the same conditions, corrosion current density was found to change from approximately 28 to 89 μA/cm2, whereas corrosion potential was decreased from -80 to -130 mV. Elevated temperatures enhanced the measured current densities up to 60 ℃; however, above this level, current density was observed to decrease. A similar current density behavior was determined with pH. A pH change from 9 to 10.5 resulted in an increase in current density and pH higher than 10.5 gave rise to a reduced current density. In addition, the thermodynamic stability of copper and iron oxides was found to increase at higher temperatures.