Beneficiation of iron ores by froth flotation

B - Operations – Transporting – 03 – D

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361/14

B03D 1/02 (2006.01) B03D 1/001 (2006.01)

Patent

CA 1076272

BENEFICIATION OF IRON ORES BY FROTH FLOTATION ABSTRACT OF THE DISCLOSURE Iron oxides of finely-ground, low grade, siliceous oxidized iron ores can be effectively floated from the silica-bearing gangue in the presence of slime by conditioning an aqueous pulp of the ore with a reagent formed by incorporat- ing a water-soluble polyvalent metal salt into an aqueous solution of an alkali metal silicate prior to subjecting the pulp to froth flotation in the presence of an anionic type collector.

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