산업용 니켈-카드뮴 폐 이차전지 습식 재활용을 위한 전처리 및 산 침출에 대한 연구
A Study on Pretreatment and Acid Leaching for Wet Recycling of Waste Industrial Ni-Cd Secondary Battery
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참고문헌
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초록
산업용 폐 니켈-카드뮴 전지를 효율적으로 재활용하기 위하여 케이스에서 분리된 양극 및 음극 스크랩을 cut mill로 분쇄하여 분급하였으며, 철 성분 제거를 위하여 습식 자력선별법을 이용하였다. 또한 얻어진 양극 및 음극 분말을 습식법을 이용하기 위하여다양한 조건에서의 산 침출 실험을 실시하였다. 최적 침출조건으로 2.0 M H 2 SO 4 , 반응온도 90℃, 15 wt% H 2 O 2 , L/S=20의 조건에서 3시간 침출을 하여 유가금속인 니켈 및 카드뮴의 침출율을 99% 이상 얻을 수 있었다.
Abstract
In order to efficiently recycle waste industrial nickel-cadmium batteries, anodic and cathodic materials were crushed by a cut mill and classified by sieves. We used wet magnetic separation method for eliminating iron components from the crushed powders. In addition, the acid leaching test for the obtained anode and cathode powders was carried out under various conditions by means of the wet process. At the optimum leaching conditions with 2.0 M H 2 SO 4 at 90?, 15 wt H 2 O 2 and L/S=20 for 3 hours, the leaching efficiency of nickel and cadmium was 99%, respectively.
참고문헌 (9)
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