METHOD FOR RECOVERING GOLD

PROBLEM TO BE SOLVED: To enable recovering of gold with high quality from a sample including gold used for various parts.SOLUTION: A method for recovering gold from a sample including gold and metal other than gold includes a first separation step of causing the sample to be soluble in an acid mixtu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HATTA TAKUYA, AOKI TAKEHISA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To enable recovering of gold with high quality from a sample including gold used for various parts.SOLUTION: A method for recovering gold from a sample including gold and metal other than gold includes a first separation step of causing the sample to be soluble in an acid mixture to separate an insoluble element therefrom; and a second separation step of causing the insoluble element obtained by the first separation method to be soluble in aqua regia to separate an insoluble element therefrom.