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以L-谷氨酸一钠作为浸出剂浸出低品位氧化铜矿的常见铜形态—碱式碳酸铜,根据配位化学理论,研究了Cu(II)-Glu2--CO32--H2O体系中Cu(II)的配合平衡热力学,并绘制了L-谷氨酸一钠浓度0～3mol/L和pH5～14内的热力学平衡图,研究了L-谷氨酸一钠浓度、pH和游离CO32-浓度对L-谷氨酸一钠浸出碱式碳酸铜的影响,并对热力学计算结果进行了实验验证.结果表明,铜离子浓度理论计算值与实验值相对误差的绝对平均值为5.32%,所选数据的准确性较好,同时也说明用谷氨酸一钠浸出低品位氧化铜矿是可行的.
In the Cu (II) -Glu2 - CO32 - H2O system, Cu (Ⅱ) --Glu2 - CO32 - H2O system was studied by leaching monosodium L - glutamate as leaching agent, (II), and the thermodynamic equilibrium diagram of L-monosodium glutamate concentration 0 ~ 3mol / L and pH5 ~ 14 was drawn. The effects of monosodium L-glutamate concentration, pH and free CO32- Concentration on the leaching of basic sodium copper carbonate from monosodium L-glutamate, and the thermodynamics calculation results were also validated experimentally.The results showed that the absolute value of the relative error between theoretical calculated value and experimental value of copper ion concentration was 5.32% The accuracy of the selected data is good, but also shows that the use of monosodium glutamate leaching low grade copper oxide is feasible.