US 6,523,764 B2 · Method for separating metallic from waste printed circuit boards, and dry distillation apparatus used for waste treatment

Abstract

A method for treating waste printed circuit boards, the method has the steps of: heating up for dry-distilling the waste printed circuit boards having copper foil retaining solder in at least a part of the surface, at a temperature of 250° C. or higher; pulverizing the dry-distilled material of the waste printed circuit boards obtained in the heating step; and separating the pulverized material of the waste printed circuit boards obtained in the pulverizing step, into board resin component and metal component.

Claims18

Dependent claims

A method for separating electronic parts from waste printed circuit boards including a board portion having electronic parts mounted thereon, the method comprising the steps of:

a) colliding predetermined particles with the waste printed circuit boards by a particles collision operation;
b) breaking junctions between the board portion of said waste printed circuit boards and said electronic parts, substantially without fracturing said board portion of said waste printed circuit boards;
and
c) separating said electronic parts from said board portion.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

09/766,232Filed 19 Jan 2001 · division

Priority

JP 10-353,07911 Dec 1998

Published

US 2001/0030251 A118 Oct 2001

Granted

25 Feb 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification32 codes

C22B 7/005
Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or…:…
B09B 3/35
Involving mechanical treatment: shredding, crushing or cutting
B29B 17/02
Recovery of plastics or other constituents of waste material containing plastics: separating plastics from other materials
C22B 7/001
Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or…: dry…

Method for separating metallic from waste printed circuit boards, and dry distillation apparatus used for waste treatment

Life of this patent

Method for separating metallic from waste printed circuit boards, and dry distillation apparatus used for waste treatment

Life of this patent

Abstract

Claims18