Physical separation processes for mineral slurries
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United States of America Patent
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May 19, 1998
Grant Date -
N/A
app pub date -
Jun 25, 1996
filing date -
Jul 6, 1994
priority date (Note) -
Expired
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Abstract
A flotation process for the separation of a mineral of non-sulphidic character, such as a talcose mineral, from a mineral of sulphidic character, for example a base metal sulphide, characterized in that a slurry containing a mixture of the minerals is subjected to a sequence of mineral dressing operations in which a non-oxidizing gas or gas mixture and a reducing agent are added to the slurry to maintain an electrochemical potential conducive to the separation of the minerals by flotation.
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