METHOD OF PRETREATING GOLD ORE

The present invention provides a method of pretreating gold ore for hydrometallurgically recovering gold from gold ore containing pyrite that enables to enhance the gold-leaching speed while the generation of sulfur dioxide is suppressed. The method of pretreating gold ore comprises a step of conver...

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Bibliographische Detailangaben
Hauptverfasser:	HATANO, KAZUHIRO, AOTO, YUKI
Format:	Patent
Sprache:	eng
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 provides a method of pretreating gold ore for hydrometallurgically recovering gold from gold ore containing pyrite that enables to enhance the gold-leaching speed while the generation of sulfur dioxide is suppressed. The method of pretreating gold ore comprises a step of converting 60% or more of pyrite contained in the gold ore to pyrrhotite represented by a following formula: Fei-xS (where x=0-0.2). [1/4] [Fig. 1] 5.89.7it hokit F ES:.p c.E (D __A ____ 5crpnr 1.6 -A-1. 0 1 2 3 4 50 A60 A60 9 Lea chi ng ti me / h