METHOD OF SEPARATION OF RHODIUM FROM IRIDIUM AND RUTHENIUM

metallurgy of non-ferrous metals, more particularly extraction and separation of noble metals. SUBSTANCE: method comprises selective cementation of rhodium with zinc, during heating and stirring operations. Process is carried out in solutions of phosphoric acid having concentration of 90-100% at tem...

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Bibliographische Detailangaben
1. Verfasser:	PATRUSHEV V.V
Format:	Patent
Sprache:	eng ; rus
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:	metallurgy of non-ferrous metals, more particularly extraction and separation of noble metals. SUBSTANCE: method comprises selective cementation of rhodium with zinc, during heating and stirring operations. Process is carried out in solutions of phosphoric acid having concentration of 90-100% at temperatures from 80 to 140 C cementation time of 5-10 min and stoichiometric amount of zinc used. Method makes it possible to simplify process, use cheaper reagents, and increase direct extraction of rhodium thus reducing expenses for refining thereof. EFFECT: higher efficiency. 1 tbl