湿法冶金2024，Vol.43Issue(5)：583-591,9.DOI:10.13355/j.cnki.sfyj.2024.05.015
退役晶硅光伏太阳能电池中有价组分的回收工艺研究
Recycling Process of Valuable Components from Decommissioned Crystalline Silicon Photovoltaic Solar Cells
摘要
Abstract
Decommissioned crystalline silicon photovoltaic solar cells are rich in valuable resources and have recovery value.Increasing the separation efficiency of valuable components and metallurgy,and improving the multi-group decomposition effect of the bonding system are the key to achieve efficient resource recovery.EVA(ethylene-vinyl acetate)bonding behavior was weakened by roasting modification,and multi-component selective crushing characteristics of crystalline silicon photovoltaic solar cells were strengthened.Material distribution,EVA bonding weakening behavior and dissociation effect were analyzed by XRD,TG and SEM,and the target components were recovered step by step by acid leaching method.The results show that after roasting modification and crushing treatment,the bonding degree of EVA decreases,the dissociation degree of EVA increases,and the crushing effect is strengthened.After crushing,the yield of fine-grained components increase by 15％,and the valuable metals in different particle size components are selectively enriched.The selective dissociation behavior of multiple components is strengthened by grinding aid,and the selective crushing effect index φ reaches 0.112.The leaching rates of Cu,Ag,Al and Si are 98.33％,94.12％,97.21％and 95.17％,respectively,and the removal rate of Pb2+is 93.53％.This process can provide technical reference for the development of short-range,clean and green recycling process for decommissioned crystalline silicon photovoltaic solar cells.关键词
晶硅光伏太阳能电池/有价组分/回收/解离/焙烧/改性/选择性破碎指数/浸出Key words
crystalline silicon photovoltaic solar cells/valuable component/recycling/disociation/roasting/modification/selective fragmentation/leaching分类
矿业与冶金引用本文复制引用
张宏涛,王红雪,董宪姝,付元鹏,姚素玲,樊玉萍..退役晶硅光伏太阳能电池中有价组分的回收工艺研究[J].湿法冶金,2024,43(5):583-591,9.基金项目
山西省基础研究计划青年资助项目(202103021223045) （202103021223045）
山西省回国留学人员科研资助项目(2022-062). （2022-062）
