EXTRACTION METHOD OF GOLD FROM ELECTROLYTE FOR ELECTROPOLISHING OF PRODUCTS

FIELD: metallurgy. ^ SUBSTANCE: invention relates to extraction method of gold from ferrostan electrolyte for electropolishing of products, containing complex compound gold ion with thiourea. Method includes destruction of complex by means of treatment of electrolyte 33.0-67.5% solution of hydrogen...

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Hauptverfasser:	DEGTEV DMITRIJ MIKHAJLOVICH, ALIKINA EKATERINA NIKOLAEVNA, ONORIN ALEKSANDR ANATOL'EVICH, MEL'NIKOV PAVEL VIKTOROVICH, DEGTEV MIKHAIL IVANOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	APPARATUS THEREFOR CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTROLYTIC OR ELECTROPHORETIC PROCESSES 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 PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROMOBJECTS 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:	FIELD: metallurgy. ^ SUBSTANCE: invention relates to extraction method of gold from ferrostan electrolyte for electropolishing of products, containing complex compound gold ion with thiourea. Method includes destruction of complex by means of treatment of electrolyte 33.0-67.5% solution of hydrogen peroxide. Treatment is implemented at concentration of sulfuric acid, equal to 0.19-0.45 mole/l, with restoration of gold up to the metal. ^ EFFECT: increasing of gold extraction ratio of high grade and process simplification. ^ 1 tbl, 2 ex Изобретение относится к способу извлечения золота из сернокислого электролита для электрополировки изделий, содержащего комплексное соединение иона золота с тиомочевиной. Способ включает разрушение комплекса путем обработки электролита 33,0-67,5%-ным раствором перекиси водорода. Обработку ведут при концентрации серной кислоты, равной 0,19-0,45 моль/л, с восстановлением золота до металла. Технический результат изобретения заключается в повышении степени извлечения золота высокой степени чистоты и упрощение процесса. 1 табл.