Dissolution of nickeliferous sulfide material in HCl
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United States of America Patent
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Dec 23, 1980
Grant Date -
N/A
app pub date -
Feb 16, 1979
filing date -
Feb 16, 1979
priority date (Note) -
Expired
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Abstract
A process is provided for leaching nickeliferous sulfide material, such as NiS precipitate and thermally activated nickel sulfide material, e.g., nickel matte, the process comprising subjecting nickeliferous sulfide material in the finely divided state to leaching in hydrochloric acid of concentration ranging from about 3 N to 8 N at a temperature of over 50.degree. C., the temperature and acid concentration being selected to dissolve at least about 50% by weight of the total contained nickel.
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