Ὰ ả ং⁆‫ܮ‬᪳ᆂ ∢ᆂ ITO⅂↖Ỷ ᧒῏ൂఊ. ᘞ ♃ᩊỶᩂ ‫ݲ⁆ݾ‬ 2╎₶ῶ~⛂‫ݲ‬ ῏ẇᆂᚦ͆ ᚪዒ‫ݖݮ‬ ‫ݲ‬ ῏ጊ⚺⛂, ₚ‫ٶ‬ ᔵ ᩃ⛂ᖻỶ ద‫ݲ‬ ‫℻؛‬ ↖֚ ᔵ ఎℶ ↖᧒‫ޞ‬ఊ. ᘚϋ ℻೪⁾ ᧖ᩗ῏ẇỶᩂ ⁾ ⚺⛂⅂ᆂ D2EHPA Ԧ Ԧ ዴₚ ᧒῏ാ؆ ₮᎖, ጊῖ Ի‫ݲ‬ ἢ᧖῏ẇỶᩂ Ṫᔢ‫ת‬ ⚺⛂⅂Ԧ ᧒῏ൂఊ. ₢ᔾ℧ᆂ ₚ‫ٶ‬ᬾ⋦⁾ ॷ╏ჯₚ ᓦᆂ, ⁾ ળ೪Ԧ ‫ף‬ῖỶ ‫ފݲ‬ ₚ‫ٶ‬ ῏ጊ⚺⛂ᘚఊ ℶₚ ₮ఊ. ∢⅂Ớ , 2╎ ₶ῶ, ࢢᬾ, ῏ጊ⚺⛂, ₚ‫ٶ‬ Abstract Indium is one of the rare metals, and it has been used mainly for preparation of indium tin oxide (ITO). This review investigated the process parameters and the merits and demerits of several methods to recover

more »

... from the leaching solution of secondary resources, such as solvent extraction, ion exchange, and precipitation. D2EHPA has been used mostly as a cationic extractant for indium extraction in moderate acid solutions, while amine extractants are used in strong hydrochloric acid solution. Since the loading capacity of resins for indium is generally small, ion exchange has some advantage over solvent extraction only when the concentration of indium is low.