The influence of particle shape properties and associated surface chemistry on the flotation kinetics of chalcopyrite

T Vizcarra; Sarah Harmer; E Wightman; N Johnson; E Manlapig

doi:10.1016/j.mineng.2011.02.019

The influence of particle shape properties and associated surface chemistry on the flotation kinetics of chalcopyrite

T Vizcarra, Sarah Harmer, E Wightman, N Johnson, E Manlapig

Research output: Contribution to journal › Article › peer-review

58 Citations (Scopus)

Abstract

The role of particle shape properties in determining flotation kinetics was investigated in this study. -150/+75 μm chalcopyrite was floated in a microflotation cell, and shape properties of the timed concentrates were quantified using a mineral liberation analyser - a mineralogical characterisation system based on automated scanning electron microscopy. It was found that, when floated in the absence of collector, particles with angular shape features reported to the concentrate faster than round particles. X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectroscopy (ToF-SIMS) showed that angular particles also exhibited surface chemistry characteristics favourable for flotation. When particle floatabilities were high (i.e. when floated in the presence of potassium amyl xanthate), shape properties were not found to contribute significantly to the rates at which particles floated.

Original language	English
Pages (from-to)	807-816
Number of pages	10
Journal	Minerals Engineering
Volume	24
Issue number	8
DOIs	https://doi.org/10.1016/j.mineng.2011.02.019
Publication status	Published - Jul 2011

Keywords

Flotation
Shape
Sulfides
Surface chemistry

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10.1016/j.mineng.2011.02.019

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title = "The influence of particle shape properties and associated surface chemistry on the flotation kinetics of chalcopyrite",

abstract = "The role of particle shape properties in determining flotation kinetics was investigated in this study. -150/+75 μm chalcopyrite was floated in a microflotation cell, and shape properties of the timed concentrates were quantified using a mineral liberation analyser - a mineralogical characterisation system based on automated scanning electron microscopy. It was found that, when floated in the absence of collector, particles with angular shape features reported to the concentrate faster than round particles. X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectroscopy (ToF-SIMS) showed that angular particles also exhibited surface chemistry characteristics favourable for flotation. When particle floatabilities were high (i.e. when floated in the presence of potassium amyl xanthate), shape properties were not found to contribute significantly to the rates at which particles floated.",

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AU - Vizcarra, T

AU - Harmer, Sarah

AU - Wightman, E

AU - Johnson, N

AU - Manlapig, E

PY - 2011/7

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AB - The role of particle shape properties in determining flotation kinetics was investigated in this study. -150/+75 μm chalcopyrite was floated in a microflotation cell, and shape properties of the timed concentrates were quantified using a mineral liberation analyser - a mineralogical characterisation system based on automated scanning electron microscopy. It was found that, when floated in the absence of collector, particles with angular shape features reported to the concentrate faster than round particles. X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectroscopy (ToF-SIMS) showed that angular particles also exhibited surface chemistry characteristics favourable for flotation. When particle floatabilities were high (i.e. when floated in the presence of potassium amyl xanthate), shape properties were not found to contribute significantly to the rates at which particles floated.

KW - Flotation

KW - Shape

KW - Sulfides

KW - Surface chemistry

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JO - Minerals Engineering

JF - Minerals Engineering

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The influence of particle shape properties and associated surface chemistry on the flotation kinetics of chalcopyrite

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Keywords

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