System For Recycling Printed Circuit Boards
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United States of America Patent
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N/A
Issued Date -
Nov 26, 2009
app pub date -
May 20, 2009
filing date -
May 22, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A process for recycling printed circuit boards includes pyrolyzing a number printed circuit boards to from an ash. Metals form the circuit boards are separated from the ash by density separation techniques. The metals are formed into a slurry electrode. The slurry electrode and a deposition electrode are placed in an electrolyte bath and the metals are electrorefined to form bars of metal. The slurry electrode is made by combining powderized metals with carbon powder and an ionic liquid to form an electrode paste. The electrode paste is placed inside a container with a screen to form the slurry electrode.
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