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Extraction of metal values from manganese nodules in the ocean environment using zinc matte as a reductant

Title
Extraction of metal values from manganese nodules in the ocean environment using zinc matte as a reductant
Authors
Kuh S.E.Kim J.W.Kim D.S.Choi K.S.
Ewha Authors
김동수
SCOPUS Author ID
김동수scopus
Issue Date
2001
Journal Title
Environmental Technology
ISSN
0959-3330JCR Link
Citation
vol. 22, no. 8, pp. 881 - 887
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The leaching process of manganese nodules in the marine environment is significant in the recovery of several metal values. In this experiment, reduction leaching of manganese nodules was carried out using zinc matte as a reductant in dilute HCl solution. The leaching characteristics of Mn, Co, Ni, and Cu from manganese nodules depended on the leaching temperature and initial HCl concentration. A temperature of approximately 70°C was suitable for the present reduction leaching, and the extraction rate increased with increase in the initial HCl concentration. More than 97% of Mn, 92% of Co, and 88% of Ni were easily extracted. The dissolution of Mn, Co, Ni, and Cu depended upon the amount of zinc matte added. The ratio of liquid and solid was also an important factor in the extraction of manganese nodules. As the liquid/solid (L/S, lixiviant/manganese nodule) ratio was increased, the extraction rate increased. The extraction rate was independent of stirring speed.
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엘텍공과대학 > 환경공학전공 > Journal papers
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