Hydrometallurgical process for the extraction of copper from sulphidic concentrates
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United States of America Patent
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Mar 24, 1998
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N/A
app pub date -
Feb 27, 1996
filing date -
Feb 27, 1995
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Abstract
There is provided a novel hydrometallurgical process for the extraction of copper from sulphidic concentrates involving an oxidizing pressure leach using dilute sulphuric acid and a carbonaceous additive. The leaching step is carried out preferably at temperatures above the melting point of sulphur but below about 200.degree. C.
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