Title

FROTHING CHARACTERISTICS IN THE REVERSE MAGNETITE IRON ORE FLOTATION

FROTHING CHARACTERISTICS IN THE REVERSE MAGNETITE IRON ORE FLOTATION

Authorship

Cassola, Monica Speck; Silva, Wagner Claudio da; Bartalini., Nilson Mar

Cassola, Monica Speck

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Silva, Wagner Claudio da

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Bartalini., Nilson Mar

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DOI

10.5151/2594-357X-22248

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Abstract

Froth flotation is widely used method for ore beneficiation. The reverse iron ore flotation basically consists of the selective separation of silicate particles from magnetite or hematite. In these processes, the amines are added to the system being adsorbed on the silicate surface, which is removed from the flotation cell as foam. It is well known that in the flotation cell the selectivity of flotation depends on the average and the width of the bubble size distribution. This feature is relevant regarding the frothing ability of the amine that affects the particle bubble adhesion kinetics. This paper describes, based on the ability of certain chemicals to modify the mineral surface, the selection of an adequate amine type which changed significantly the froth characteristics at a magnetite flotation system, changing the amount and stability of the foam.

Froth flotation is widely used method for ore beneficiation. The reverse iron ore flotation basically consists of the selective separation of silicate particles from magnetite or hematite. In these processes, the amines are added to the system being adsorbed on the silicate surface, which is removed from the flotation cell as foam. It is well known that in the flotation cell the selectivity of flotation depends on the average and the width of the bubble size distribution. This feature is relevant regarding the frothing ability of the amine that affects the particle bubble adhesion kinetics. This paper describes, based on the ability of certain chemicals to modify the mineral surface, the selection of an adequate amine type which changed significantly the froth characteristics at a magnetite flotation system, changing the amount and stability of the foam.

Keywords

Froth flotation; Magnetite; Amines; Reverse iron ore.

Froth flotation; Magnetite; Amines; Reverse iron ore.