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Froth Flotation Process Zinc

1975-6-17a froth flotation method for the recovery of mineral values of iron, zinc, copper, and thorium, from their ores, which comprises adding to a water suspension of finely divided ore at a ph from 5 to 9 of alkali or ammonium alkyl, alkylaryl, or aryl sulfinate as promoter-collector aerating the pulp of the mineral slurry and recovering the floated mineral from the suspension.

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