FOERFARANDE FOER SEPARERING AV GULD OCH SILVER FRAON KOMPLEXA SULFIDMALMER OCH -KONCENTRAT

The present invention relates to a process for the separation of gold and silver from complex sulfide ores and concentrates which, in addition to the primary metals, contain constituents having an adverse effect on the separation of the noble metals, by heating the sulfide ore or concentrate at a te...

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Bibliographische Detailangaben
Hauptverfasser:	MAEKIPIRTTI SIMO ANTERO IIVARI, POLVI VEIKKO MATIAS, SETAELAE PEKKA TAPIO, SAARI KAARLO MATTI JUHANI
Format:	Patent
Sprache:	fin
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The present invention relates to a process for the separation of gold and silver from complex sulfide ores and concentrates which, in addition to the primary metals, contain constituents having an adverse effect on the separation of the noble metals, by heating the sulfide ore or concentrate at a temperature of 600 DEG -900 DEG C. and a sulfur pressure of 0.2-1 atm in order to bring the complex metal compounds to a suitable form for subsequent alkalic cyanide leaching, and by separating the gold- and silver-bearing cyanide solution from the undissolved residue.