混合精矿体系中方铅矿与黄铁矿浮选分离的矿浆电化学(Ⅰ)─—方铅矿表面丁基黄原酸铅的电化学还原动力学

来源期刊：中南大学学报(自然科学版)1995年第1期

论文作者：冯其明 陈荩 许时

文章页码：33 - 38

关键词：方铅矿; 丁基黄药; 浮选; 混合精矿; 矿浆电化学; 动力学

Key words：galena; buthyl xanthate; flotation pulp electrochemistry; bulk concentrate; kinet-ics

摘    要：采用恒电流极化法首次研究了方铅矿表面丁基黄原酸铅的电化学还原动力学行为,测定了丁基黄原酸铅电化学还原的动力学参数(如过电位、传递系数及交换电流密度),建立了还原反应的动力学方程,证实在方铅矿表面丁基黄原酸铅的电化学还原反应是一个不可逆电化学过程,过电位高达308mV.

Abstract: The kinetic behavior of lead buthyl xanthate electrochemically reduced on galena surfacehas been investigated by current-stepping niethod. Some kinetic parameters such as overpotential, transmitiOn coeffiCiei,tand exchange current density were measured,and the kineticequation of lead buthyl xanthate electroclieniical reduction has been found.The results showthat the electrochemical reduction of Pb(BX)2 on the galena surface is an irreversible reactionand has 308 mV of overpotion.