Title

IMPACT OF FROTH STRUCTURE ON IRON ORE FLOTATION

IMPACT OF FROTH STRUCTURE ON IRON ORE FLOTATION

Authorship

Gustafsson, Jan-Olof; Lima, Odair

Gustafsson, Jan-Olof

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Lima, Odair

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DOI

10.5151/2594-357X-23833

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Abstract

Flotation is used for beneficiation of iron ore. The common practice is to use cationic collectors, such as etherdiamines, for removal of silicates by reverse flotation, especially from magnetite ores. The froth phase which contains the gangue is often voluminous and stable. This creates problem in the process, especially when the froth phase should be further processed to improve the iron recovery. The froth properties are affected by the chemistry of the collector, the water quality and also by particle size and shape of floated minerals. To evaluate froth properties in laboratory scale Akzo Nobel Surface Chemistry measures froth formation and stability in addition to performing traditional flotation tests. The result of these combined measurements gives improved knowledge about froth properties for different cases of magnetite flotation and collector chemistries. Furthermore, the aim is to also reduce problems with froth properties upon scaling up of laboratory procedures. This improves our ability of taking froth characteristics into account when tailor-making collectors.

Flotation is used for beneficiation of iron ore. The common practice is to use cationic collectors, such as etherdiamines, for removal of silicates by reverse flotation, especially from magnetite ores. The froth phase which contains the gangue is often voluminous and stable. This creates problem in the process, especially when the froth phase should be further processed to improve the iron recovery. The froth properties are affected by the chemistry of the collector, the water quality and also by particle size and shape of floated minerals. To evaluate froth properties in laboratory scale Akzo Nobel Surface Chemistry measures froth formation and stability in addition to performing traditional flotation tests. The result of these combined measurements gives improved knowledge about froth properties for different cases of magnetite flotation and collector chemistries. Furthermore, the aim is to also reduce problems with froth properties upon scaling up of laboratory procedures. This improves our ability of taking froth characteristics into account when tailor-making collectors.

Keywords

Flotation; Iron ore; Froth properties.

Flotation; Iron ore; Froth properties.