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US 2017/0362682 A1Published application
Method For Recycling Waste Electrical And Electronic Equipment
AssigneesBrgm, Centre National de la Recherche Scientifique (CNRS), Universite D'Orleans
InventorsNour-Eddine Menad, Sylvain Guignot, Iskender Gokalp, Stéphane Bostyn, Yann Graz, Jacques Poirier
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Abstract
The method for separation of metals from electronic cards includes a step of processing the electronic cards in an aqueous medium under supercritical conditions. The method also a later step of crushing solid materials coming from the treatment under supercritical conditions.
Claims21
A process for separating metals from electronic boards, characterized in that it comprises:
- a) a step of treating electronic boards in an aqueous medium under supercritical conditions of said medium and
- b) a subsequent step of crushing the materials in the solid state that are derived from the step of treating under supercritical conditions.
(canceled)
A process for separating metals from electronic boards, characterized in that it comprises:
- a) fragmenting an electronic board into fragments having a size less than or equal to 5 cm;
- b) treating the fragmented boards in an aqueous medium under supercritical conditions of said medium to a temperature of 374° C. to 600° C. and from 22.1 MPa to 30 MPa in an autoclave;
- c) crushing in the solid state the treated materials derived from the step of treating under supercritical conditions;
- and
- d) subjecting the crushed material to a low-intensity magnetic separation.
2 more elements
Dependencies are inferred from the claim text.