Method of recovering valuable metals from waste

Abstract

A method which allows recovery of valuable metals in simple steps from printed wiring board or the like is provided. The waste is an integrated industrial waste containing a glass fiber, an epoxy resin and valuable metals such as copper, iron, gold and aluminum. The method comprises heating the industrial waste to a temperature at which the glass fiber does not melt but degrades, followed by removing the degraded glass fiber.

1 . A method of recovering valuable metals from waste, the waste being an integrated industrial waste containing a glass fiber, an epoxy resin and valuable metals such as copper, iron, gold and aluminum, comprising
 heating the industrial waste to a temperature at which the glass fiber does not melt but degrades,   removing the degraded glass fiber, and thus,   recovering the valuable metals contained in the waste.   
   
   
       2 . The method of recovering valuable metals from waste according to  claim 1 , wherein the temperature condition applied to the industrial wastes is in the range of 500° C. for 20 minute or more and 1000° C. for about 10 minutes. 
   
   
       3 . The method of recovering valuable metals from waste according to  claim 1 , wherein the temperature condition applied to the industrial wastes is in the range of 750° C. for 30 minute or more and 1000° C. for about 10 minutes.