Leaching of chalcopyrite with acidified ferric chloride and carbon tetrachloride addition
Leaching characteristics of chalcopyrite concentrate from Cuba were investigated in acidified FeCl 3 and acidified FeCl 3 + CCl 4. Carbon tetrachloride was used as solvent for the elemental sulfur produced during leaching. The tests shows higher extraction for copper in the presence of CCl 4. Leachi...
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Published in | Minerals engineering Vol. 8; no. 10; pp. 1125 - 1134 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
01.10.1995
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | Leaching characteristics of chalcopyrite concentrate from Cuba were investigated in acidified FeCl
3 and acidified FeCl
3 + CCl
4. Carbon tetrachloride was used as solvent for the elemental sulfur produced during leaching. The tests shows higher extraction for copper in the presence of CCl
4. Leaching in the absence of CCl
4 is a chemically controlled reaction with an apparent activation energy of 68.9 kJ/mol in the temperature range 45–80°C. For the diffusional controlled regime in the low temperature range (3.5–45°C) an apparent value of the activation energy of 1.1 Kj/mol has been estimated. In the presence of CCl
4 the activation energy value amounts to 31.2 kJ/mol in the temperature range 45–80°C which indicates a diffusion controlled process. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0892-6875 1872-9444 |
DOI: | 10.1016/0892-6875(95)00077-4 |