黄铜矿发电浸出体系输出功的影响因素  

Factors Affecting Output Power in Electro-generative Leaching System of Chalcopyrite

作　　者：肖利[1] 柳建设[2] 方正[1] 邱冠周[2] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《过程工程学报》2006年第4期576-579,共4页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:50374077);973计划资助项目(编号:2004CB619204);国家自然科学基金创新群体资助项目(编号:50321402)

摘　　要：将黄铜矿浸出设计成CuFeS2-FeCl3(aq)和CuFeS2-MnO2发电浸出原电池体系,采用正交实验设计对影响原电池输出功率的因素,如工作电极的矿物粒度、工作电极中导电剂、阳极液NaCl浓度及pH值、溶液温度、阴极体系和阴极液HCl浓度等进行考察,得出影响输出功的最显著因素是阴极体系构成,其次是NaCl和HCl的浓度.通过对黄铜矿最大输出功率效应曲线分析,得出了最佳发电浸出条件.最大功率处6h恒阻放电结果表明,发电浸出受阻因素是电极表面上单质硫的聚集.因此,移出电极表面硫将保持正常的电池输出功率.The generative principle was applied to leaching process of CuFeS2-FeCl3（aq） and CuFeS2 MnO2 in this study. It was confirmed that a certain quantity of electrical energy along with the leached products could be simultaneously obtained during the process. The factors affecting the power output, such as grain size of concentrate and graphite paste in working electrode, NaCI concentration and pH value of anodic solution, temperature, different systems of cathode, and HCl concentration of cathodic apartment, were investigated by using an orthogonal design and factorial experiments. The results indicated that the materials of cathode were very important, then followed by concentrations of NaCl and HCl of the leaching system. The leaching conditions were optimized according to their effects on the maximal output power. It was shown that the generative impeding factor was mainly solid sulfur gathering on the surface of working electrode based on the discharging experiments under constant resistance in 6 h. Therefore, eliminating elemental sulfur is the key measure to maintain the output power.

关 键 词：黄铜矿 输出功率 正交实验 发电浸出 

分 类 号：TF811[冶金工程—有色金属冶金]