METHOD FOR RECOVERING IRIDIUM

To provide a method for efficiently precipitating and recovering iridium from iridium-containing hydrochloric acidic liquid.SOLUTION: A method for recovering iridium includes heating iridium-containing hydrochloric acidic liquid to 40°C or higher, and adding sodium thiosulfate or thiosulfate ion-con...

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Bibliographische Detailangaben
1. Verfasser:	MANABE MANABU
Format:	Patent
Sprache:	eng ; jpn
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:	To provide a method for efficiently precipitating and recovering iridium from iridium-containing hydrochloric acidic liquid.SOLUTION: A method for recovering iridium includes heating iridium-containing hydrochloric acidic liquid to 40°C or higher, and adding sodium thiosulfate or thiosulfate ion-containing solution to the hydrochloric acidic liquid so that the amount of addition is 100 mass or more times higher than the amount of iridium in the hydrochloric acidic liquid in terms of sodium thiosulfate pentahydrate.SELECTED DRAWING: Figure 1 【課題】イリジウムを含む塩酸酸性液からイリジウムを効率的に沈殿回収する方法を提供する。【解決手段】イリジウムを含む塩酸酸性液を４０℃以上に加温し、チオ硫酸ナトリウム塩もしくはチオ硫酸イオン含有溶液を、塩酸酸性液におけるイリジウムに対し、チオ硫酸ナトリウム５水和物に換算して１００質量倍以上になるよう塩酸酸性液に添加する、イリジウムの回収方法。【選択図】図１