电浸取回收废金刚石刀头中金属铜的工艺研究

Study on the Recovering Process of Copper from Waste Diamond Segments by Electroextraction

摘要: 本研究采用电浸取法，以废金刚石刀头为阳极，通过电浸取硫酸铜电解液从而获得纯度较高的铜单质以达到回收废金刚石刀头中的铜。实验中通过控制变量法分别以电解液温度、电解时间、电解液中Cu²⁺浓度、电解电压、阳极面积等为自变量，测定铜的回收率及其电流效率，从而确定废金刚石刀头中铜的回收工艺最适合条件及工艺参数。实验结果表明，废金刚石刀头中铜的回收工艺优选条件为，电解液温度50℃、电解时间30 min、电解液中Cu²⁺浓度为1.12 mol/L、电解电压1.8 V、阳极面积12.0 cm²，回收的铜单质含铜量为99.1%。

Abstract: In this study, the electroextraction method was adopted to obtain high purity copper by elec-troextracting copper sulfate electrolyte using the waste diamond segments as the anode to recover the copper. In the experiment, the variables such as electrolyte temperature, electrolytic time, concentration of Cu²⁺ in the electrolyte, electrolytic voltage and area of anode were investigated to research the copper recovery and current efficiency. The most suitable conditions and process parameters of recovering process of copper were discussed. The experimental results show that the optimized conditions for the recovering process of copper from waste diamond segments as follows: electrolyte temperature is 50˚C, electrolytic time is 30 min, the concentration of Cu²⁺ in the electrolyte is 1.12 mol/L, the electrolytic voltage is 1.8 V and the area of anode is 12.0 cm². The copper content of the recovering metallic copper is 99.1%.