复合石墨烯的废铅膏资源化利用新工艺

采用原子经济法处理铅酸电池废铅膏以制作正极原料，正极废铅膏经洗涤干燥并粉碎成适当粒度的颗粒后，与一定氧化度的铅粉、石墨烯混合进行球磨反应，然后按照工厂现行工序，以球磨粉料作为原料，制得了铅酸电池管式正极，结果表明，为降低正极废铅膏回收利用制备正极板的成本，以正极废铅膏为原料的适宜球磨条件为：球磨时间6 h、球磨转速400 r/min、石墨烯添加质量分数为0.1%、氧化度80%的铅粉加入量为废铅膏质量的40%。相比传统铅粉原料，处理过的球磨粉料所制正极板的容量和寿命分别提升了2.9%和1.4%。

New Process for Resource Utilization of Waste Lead Paste with Composite Graphene

Waste lead paste of lead acid battery was treated by atomic economic method to produce raw materials of positive electrode. The waste positive lead paste was washed, dried and crushed into particles with appropriate particle size, and then mixed with certain degree of oxidation lead powder and graphene for ball milling reaction. Then according to the current process of the factory, lead was prepared by using ball milling powder as raw material. The results show that in order to reduce the cost of preparing positive plate by recycling waste positive lead paste, the suitable ball milling conditions for waste positive lead paste include ball milling time of 6 h, ball milling speed of 400 r/min, addition of mass fraction of graphene of 0.1%, 80% oxidation degree of lead powder dosage of 40% of mass of waste lead paste. Compared with the traditional lead powder, the capacity and life of positive plate made from the treated ball mill material rise by 2.9% and 1.4% respectively.