Recovery of cadmium by high-temperature vaccum evaporation from Ni-Cd batteries

来源期刊：中国有色金属学报(英文版)2003年第2期

论文作者：朱建新 李金惠 聂永丰 于波

文章页码：254 - 257

Key words：vacuum evaporation; recycling; waste battery; Ni-Cd batteries

Abstract: High-temperature vaccum evaporation is a recycling technology that includes a selective material recovering process. The fundamental research on a process of disassembling and recovering selected materials from Ni-Cd batteries was conducted using self-designed experimental apparatus. An effective recycling technology based on the evaporation phenomenon of batteries and the elements of cadmium under the laboratory condition was studied. The results show that: (1)Ni/Cd can be effectively recovered by vacuum distillation at appropriate temperature, pressure and time, and high purity cadmium (>99%) can be obtained through the process; (2)the effective distillatory temperature should be at the range of 573-1173K; (3)the higher the evaporation temperature, the lower the purity of cadmium in condensate metal