废铅膏在酒石酸钠体系直接固相电解制备粗铅  

Preparation of Crude Lead by Direct Solid Phase Electrolysis of Spent Lead Paste in Sodium Tartrate System

作　　者：李新颖 王伟 谢锋 潘志刚 刘孝伟 衡振平 姬利红 LI Xin-ying;WANG Wei;XIE Feng;PAN Zhi-gang;LIU Xiao-wei;HENG Zhen-ping;JI Li-hong(School o£Metallurgy,Northeastern University,Shenyang 110819,China;Anhui Chaowei Power Supply Co.,Ltd.,Chizhou 247100,Anhui,China;Zhengzhou Jinquan Mining and Metallurgy Equipment Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]东北大学冶金学院,沈阳110819 [2]安徽超威电源有限公司,安徽池州247100 [3]郑州金泉矿冶设备有限公司,郑州450000

出　　处：《有色金属（冶炼部分）》2022年第8期24-32,共9页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点研发计划项目(2019YFC1908303);辽宁省“兴辽英才计划”项目(XLYC2008035);沈阳市科技计划项目(20-206-4-04)。

摘　　要：研究了利用酒石酸钠电解液对硫酸铅和废铅膏进行直接固相电解制备粗铅的工艺可行性。探索了阳极材质、电解液浓度、添加剂、电流密度、极距、电解温度等工艺条件对电解过程电流效率和电解能耗的影响。采用双盐桥参比电极对电解过程阴阳极电位进行监测,确立了最优工艺条件。在酒石酸钠浓度1 mol/L、电流密度375 A/m^(2)、异极距15 mm、温度50℃条件下固相电解硫酸铅,电流效率可达96.7%,吨铅电解能耗为676 kWh,获得电解铅纯度为99.8%。在上述条件下,固相电解废铅膏,其电流效率为91.60%,吨铅能耗1068 kWh,铅纯度为98.74%,电解液可通过补充氢氧化钠实现循环再生利用。The feasibility of preparation of crude lead by direct solid phase electrolysis of lead sulfate and waste lead paste in sodium tartrate electrolyte was studied.Effects of anode materials,sodium tartrate concentration,additives,current density,electrode spacing,and temperature on current efficiency and energy consumption were studied.Two reference electrodes were employed to monitor cathode and anode potential and the optimal process parameters were established.The current efficiency,electrolytic energy consumption,and lead purity can reach 96.7%,676 kWh/tPb,and 99.8%,respectively under the conditions including sodium tartrate concentration of 1 mol/L,current density of 375 A/m^(2),electrode spacing of 15 mm,and temperature of 50℃during solid phase electrolysis of lead sulfate.Under the above conditions to electrolyze waste lead paste,the current efficiency,electrolytic energy consumption,and lead purity is 91.60%,1068 kWh/tPb,and 98.74%respectively.The electrolyte can be regenerated and recycled by adding sodium hydroxide.

关 键 词：硫酸铅 废铅膏 酒石酸钠 阴极还原 固相电解 

分 类 号：TF812[冶金工程—有色金属冶金]