Method and device for recovery of scrap goods
OwnerKamal Alaviinventor
Life of this patent
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Abstract
Scrap goods (S), for example, electronic and electrical apparatus, components, cables and the like are intermittently and alternately mechanically crushed (1,3), magnetically separated (2) and mechanically-physically separated, for example, by means of electrostatic separators (5, 10-12). With the crushing, the dust produced is pneumatically gathered and filtered out (22,9). A non-metal fraction (A) as well as a magnetic (B) and non-magnetic fraction (C) are produced separately as granules and dust. The metal fractions (B, C) are suitable for further pyrolysis-free, wet chemistry and/or electrolytic separation. The non-metallic fraction is capable of being precipitated. The method is noted for its minimal energy consumption and high environmental compatibility.
Claims29
A method for recovery of scrap goods containing non-metallic and metallic constituents comprising
- (a) subjecting the scrap (S) to at least one mechanical crushing operation in a closed system, and
- (b) subjecting the crushed scrap to at least one dry separation procedure in a closed system wherein no additional processing materials are added to the scrap, and wherein the separation procedure is performed by magnetic as well as electrostatic separation to produce a non-metallic fraction (A), a magnetic metal fraction (B) and a non-magnetic metal fraction (C) in granular and powder forms, the metal fractions (B, C) being suitable for further processing by at least one of the pyrolysis-free separation procedures selected from the group consisting of wet chemical separation and electrolytic separation.
A method for recovery of scrap goods containing non-metallic and metallic constituents comprising
- (a) subjecting the scrap (S) to at least one mechanical crushing operation in a closed system;
- (b) subjecting the crushed scrap to at least one dry separation procedure in a closed system wherein no additional processing materials are added to the scrap and wherein the separation procedure is performed by magnetic as well as electrostatic separation to produce a non-metallic fraction (A), a magnetic metal fraction (B) and non-magnetic metal fraction (C) in granular and powder forms, and
- (c) further processing the two metal fractions (B, C) by subjecting the fractions to at least one of the pyrolysis-free separation procedures selected from the group consisting of wet chemical separation and electrolytic separation.
An installation for the recovery of scrap goods containing non-metallic and metallic constituents comprising at least a first and a second mechanical crushing machine (1, 3) and a magnetic separator (2) arranged between them in relation to the material flow, a first electrostatically operated separator (5) for separation of the mixture segregated by the magnetic separator (2) into a magnetic metal fraction and a non-metal fraction, and at least a second electrostatically operated separator (10-12) for separation of the mixture (G2) yielded by the magnetic separator (2) and guided through the second crushing machine (3) for separation into a non-magnetic metal fraction and a non-metallic fraction and further means (22, 9, 23) for recirculating powder from a crushing machine to one of the separating machines.
Dependencies are inferred from the claim text.