Gold leaching method and gold recovery method

Provided is a gold leaching method for leaching gold included in raw material that includes sulfide minerals or gold and sulfur as a refining intermediate obtained by refining treatment of sulfide minerals, wherein the gold leaching method includes: a first leaching step for leaching part of the gol...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIMURA, Akira, SEKINE, Kazuhiro, TATSUMI, Ryosuke
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:	Provided is a gold leaching method for leaching gold included in raw material that includes sulfide minerals or gold and sulfur as a refining intermediate obtained by refining treatment of sulfide minerals, wherein the gold leaching method includes: a first leaching step for leaching part of the gold in the raw material and obtaining a leaching residue having a gold residue and including sulfur; a sulfur elimination step for eliminating the sulfur in the leaching residue; and a second leaching step for leaching at least part of the residual gold in the leaching residue that has passed through the sulfur elimination step.