Method for recovering metal copper from coated copper wires
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United States of America Patent
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Jun 10, 2014
Grant Date -
Apr 4, 2013
app pub date -
Nov 21, 2012
filing date -
Sep 30, 2011
priority date (Note) -
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Abstract
A method selectively recovers a useful substance from waste including a chlorine-containing synthetic resin and metal copper in a mixed state. Metal copper is recovered from coated copper-wire waste. The method includes the steps of heat-treating the waste in form of coated copper wires, each having a coating material made of a chlorine-containing synthetic resin, in oil or under a non-oxygen condition. Here, the coating material is carbonized and a chlorine content of the coating material is reduced. Then the coating material and the copper wire are separated from each other the copper wire is recovered. The chlorine-containing synthetic resin can be treated without generating dioxin.
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