자원리싸이클링 (Resources Recycling)
- 제2권4호
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- Pages.27-32
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- 1993
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- 2765-3439(pISSN)
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- 2765-3447(eISSN)
제강더스트로부터 갈륨의 회수
Recovery of Gallium from Steelmaking Dust
초록
제강더스트 중에 미량으로 함유되어 있는 갈륨을 분리 회수하는 프로세스를 연구하였다. 2.25mol/l-
A process has been studied to recover gallium from steelmaking dust which had several hundreds ppm of gallium. Aqueous solution containing 38 mg/l gallium was obtained by leaching of dust with 2.25 mol/l sulfuric acid. The leach liquor contained iron and zinc about 1,000 times greater than gallium. Gallium was then concentrated by ion exchanger of chelating resin with functional group of amino carboxylic acid after reduction of ferric ion to ferrous ion and pH adjustment. Gallium was concentrated to be 13 g/l in the resulting eluate by double ion exchanges. The liquor was further treated to remove impurities by solvent extraction technique empolying TOMAC as extractant. The galluim with 99% purity was finally obtainable.
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