Leaching of copper and tin from used printed circuit boards after thermal treatment
Leaching of copper and tin from used printed circuit boards after thermal treatment
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DOI：
10.1016/j.jhazmat.2010.07.107
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发表时间：
2010-11-15
影响因子：
13.6
通讯作者：
Takacova, Z.
中科院分区：
文献类型：
--
作者：
Havlik, T.;Orac, D.;Takacova, Z.
讨论了从废旧个人电脑印刷电路板(PCB)中热处理后湿法提取铜和锡的方法。样品在300-900℃的温度范围内在15、30和60分钟内进行热处理。研究了两种热预处理方法：燃烧和热解。使用1M盐酸在80℃下的浸出液。对原始样品和热处理后的样品进行了浸出。达到了5%~35%的减重效果。随着燃烧温度的升高，铜的萃取率可达98%，而未焚烧样品的铜萃取率可达6%。在浸锡的情况下，原始样品浸出时的浸出率最高。随着焙烧温度的升高，铜的浸出率降低。随着热解温度的升高，铜和锡的萃取率提高。(C)2010爱思唯尔B.V.保留所有权利。
The hydrometallurgical route of copper and tin extraction from printed circuit boards (PCBs) of used personal computers after thermal pretreatment is discussed. The samples were thermally pretreated within temperature range of 300-900 degrees C during 15,30 and 60 min. Two methods of the thermal pretreatment were studied: burning and pyrolysis. The leaching solution of 1 M HCl at 80 degrees C was used. The original as well as thermally pretreated samples were leached. The weight losses within the range from 5 to 35% were achieved. The increase of burning temperature causes the copper extraction into solution up to 98%, while copper extraction into solution from non-burned samples was up to 6%. In the case of the tin leaching the highest extraction was achieved when the original sample was leached. The increase of the burning temperature caused the lowering of the copper extraction. The increase of the pyrolysis temperature enhances copper and tin extraction. (C) 2010 Elsevier B.V. All rights reserved.