Metal working – Method of mechanical manufacture – Scrap recovering or utilizing
Patent
1998-05-05
1999-11-09
Bryant, David P.
Metal working
Method of mechanical manufacture
Scrap recovering or utilizing
294031, 294033, 241 23, 241DIG38, B02C 1700, B02C 1912
Patent
active
059790334
ABSTRACT:
A method and a device for treating waste printed circuit boards with molten tin include process of throwing printed circuit boards into a molten tin bath in treating furnace, letting the boards proceed crashing, stirring and carbonizing treatment for separating copper foil, thermosetting plastic and glass fiber. Then these three kinds of materials are respectively separated from each other by taking advantage of their different specific gravity and collected in separate tanks to recover copper and other metals from the waste printed circuit boards.
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Chang Kuo-Ching
Lee Sen-Chi
Tai Chin-Chih
Bryant David P.
Cleanevi' Engineering Consultant Co., Ltd.
Preta John
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