球磨强化盐酸⁃氯化铁体系浸出废弃线路板中的锡  

Leaching Tin from Waste Circuit Boards with Hydrochloric Acid and Ferric Chloride System Enhanced by Ball Milling

作　　者：范武略 FAN Wu-lüe(Yongwei Real Estate Group Co Ltd,Zhengzhou 450000,Henan,China;School of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]永威置业集团有限公司,河南郑州450000 [2]同济大学环境科学与工程学院,上海200092

出　　处：《矿冶工程》2020年第5期97-99,103,共4页Mining and Metallurgical Engineering

摘　　要：以废弃线路板为研究对象,通过球磨强化盐酸⁃氯化铁体系浸出废弃线路板中的锡。考察了盐酸浓度、氯化铁浓度、反应温度、球磨机转速和反应时间对锡浸出率的影响,得到最佳实验条件为:盐酸浓度3 mol/L、氯化铁浓度12 g/L、液固比4∶1、反应温度50℃、球磨机转速50 r/min,此条件下锡浸出率达到98.83%。该工艺较好地实现了废弃线路板中锡的高效提取,为废弃线路板有价金属回收提供了新思路。Waste circuit boards were taken in an experiment to recover the tin therein by leaching with hydrochloric acid and ferric chloride system that was enhanced by ball milling.The influence of the concentration of hydrochloric acid,the concentration of ferric chloride,the reaction temperature,the rotating speed of the ball mill and the reaction time on the leaching rate of tin were investigated,and then the optimal experimental conditions were finally determined.With the concentration of hydrochloric acid at 3 mol/L,the concentration of ferric chloride at 12 g/L,the liquid⁃solid ratio of 4∶1,the reaction temperature at 50℃,and the rotating speed of ball mill at 50 r/min,the tin leaching rate reaches 98.83%.It is shown that this processing technique can realize the efficient extraction of tin from waste circuit boards,which provides a new idea for the recovery of valuable metals from waste circuit boards.

关 键 词：废弃线路板 锡 机械球磨 盐酸 氯化铁 强化 浸出 

分 类 号：TF111[冶金工程—冶金物理化学]