50 L 규모 산소가압침출기를 이용한 황동석으로부터 구리 침출
Leaching of Copper from Chalcopyrite Using 50 L Pressure Oxidation Autoclave
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참고문헌
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초록
국내에 수입되고 있는 황동석 정광을 대상으로 50 L 파일럿 플랜트 규모의 산소가압침출기를 이용하여 침출실험을 진행하였다. 구리와 철의 침출율에 대한 산소압력, 침출온도, 침출시간, 시료입도의 영향을 용액 중 구리와 철의 농도, 침출잔사의 XRD 분석을 통해 조사하였다. 산소압력, 침출온도, 침출시간이 증가함에 따라, 시료입도가 감소함에 따라 구리의 침출율은 증가하였으며, 이에 비하여 철의 침출율은 감소하였고, XRD 분석결과 철은 침출 잔사 중적철석으로 존재하는 것으로 파악되었다.
Abstract
Leaching tests of imported chalcopyrite were performed using a pilot-scale (50 L) pressure oxidation autoclave. The effects of oxygen pressure, temperature, leaching time, and particle size on the leaching efficiencies of copper and iron were investigated by measuring the metal concentrations in the leaching solution and by investigating the leached residue by X-ray diffractometry (XRD). The concentration of copper increased and the concentration of iron decreased with increasing oxygen pressure, temperature, and leaching time and with decreasing particle size. The XRD results indicated that iron existed as hematite in the leached residue.
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