Physical separation processes for mineral slurries

B - Operations – Transporting – 03 – B

Patent

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Details

B03B 1/04 (2006.01) B03D 1/001 (2006.01) B03D 1/002 (2006.01) B03D 1/02 (2006.01)

Patent

CA 2179991

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, characterised in that a slurry containing a mixture of the minerals is subjected to a sequence of mineral dressing operations in which a non oxidising gas or gas mixture and reducing agent are added to the slurry to maintain an electrochemical potential conducive to the separation of the minerals.

L'invention concerne un procédé de séparation par flottation d'un minéral de type non sulfureux (tel qu'un minéral de type talcique), et d'un minéral sulfureux (tel qu'un sulfure de métaux commun). La boue épaisse constituée par un mélange desdits minéraux est soumis à une séquence d'opérations de traitement physique consistant à ajouter un gaz ou un mélange de gaz non oxydants et un agent réducteur dans la boue pour maintenir un potentiel électrochimique entraînant la séparation des minéraux en question.

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