ECO-FRIENDLY METHOD FOR RECYCLING ELECTRONIC WASTE

The present invention discloses a process for recovering precious metals from electronic waste comprising the steps of cutting the terminals from the electronic waste involving metallic and non-metallic fractions using a mechanical process, wherein the cut is performed on the connecting terminals of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Martelo, Liliana Marques, Arroja, Luís Manuel Guerreiro Alves, Marques, António Torres, Sousa, Paulo Miguel Soares de, Soares, Helena Maria Vieira Monteiro, Bastos, Margarida Maria da Silva Monteiro, Dias, Ana Cláudia Relvas Vieira
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY DISPOSAL OF SOLID WASTE ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FERROUS OR NON-FERROUS ALLOYS INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES MAKING GRANULES OR PREFORMS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED PRETREATMENT OF RAW MATERIALS PRINTED CIRCUITS PRODUCTION AND REFINING OF METALS RECLAMATION OF CONTAMINED SOIL SOIL RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention discloses a process for recovering precious metals from electronic waste comprising the steps of cutting the terminals from the electronic waste involving metallic and non-metallic fractions using a mechanical process, wherein the cut is performed on the connecting terminals of the electronic waste; optionally placing the cut electronic waste connecting terminals in an overnight pre-swelling with stirring in an appropriate organic solvent; performing an organic swelling in a low-pressure reactor with heating and preferentially with stirring; and then separating the gold fingers from the plastic and base metal components using a magnetic separation process followed by sieving.