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Leaching of copper and tin from used printed circuit boards…文档
Journal of Hazardous Materials 183 (2010) 866–873
Contents lists available at ScienceDirect
Journal of Hazardous Materials
j o u rn al h omepage: w w w. elsev /locate/jha z mat
Leaching of copper and tin from used printed circuit boards after
thermal treatment
T. Havlik ∗ , D. Orac, M. Petranikova, A. Miskufova, F. Kukurugya, Z. Takacova
Technical University of Kosice, Faculty of Metallurgy, Centre of Waste Processing, Letna 9, 04200 Kosice, Slovakia
a r t i c l e i n f o a b s t r a c t
Article history: The hydrometallurgical route of copper and tin extraction from printed circuit boards (PCBs) of used per-
Received 21 April 2010 sonal computers after thermal pretreatment is discussed. The samples were thermally pretreated within
Received in revised form 12 July 2010 temperature range of 300–900 ◦ C during 15, 30 and 60 min. Two methods of the thermal pretreatment
Accepted 27 July 2010 ◦
were studied: burning and pyrolysis. The leaching solution of 1 M HCl at 80 C was used. The original as
Available online 3 August 2010
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
Keywords:
98%, while copper extraction into solution from non-bu
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