Patent ID: 6523597
Filing Date: 2003-02-25
Classification: B29B,B29K,B29L,C22B,Y02P,Y02W

Abstract:
A recovery method of a compact disc, comprising the steps of:a) crushing a compact disc into multiple pieces; b) placing said multiple pieces of said crushed compact disc into a stripping solution, thereby stripping said multiple pieces of said crushed compact disc, so that a metallic layer of said crushed compact disc is separated front plastic base plates of said crushed compact disc and dissolved in said stripping solution; c) filtering said plastic base plates and said stripping solution, thereby separating said plastic base plates from said stripping solution containing said dissolved metal; d) recovering said metal, said step of recovering said metal including the steps of: (1) passing said stripping solution containing said dissolved metal through an absorbing agent resin to perform an ion exchanging reaction, so that metal ions are attached to a surface of said absorbing agent resin; (2) adding a regenerating agent into said absorbing agent resin so that said metal ions are detached from said absorbing agent resin, thereby regenerating said absorbing agent resin, said absorbing agent resin being recovered and reused; (3) adding said metal ions into a plating bath, to perform a plating process, so that said metal is attached to a negative electrode of said plating bath to be recovered; and e) recovering said plastic base plates.