The relationship between particle size, cell design and air recovery: the effect on flotation performance

Norori-McCormac, Alexander

doi:10.25560/26270

2015

DOI: 10.25560/26270

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The relationship between particle size, cell design and air recovery: the effect on flotation performance

Alexander Norori-McCormac¹

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A Review of Flotation Physical Froth Flow Modifiers

Jera

Bhondayi

2021

Minerals

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Over the past few decades, the need to process more minerals while lowering capital costs has led to an increase in the size of flotation cells, e.g., 0.03 m3 to 1000 m3. However, this increase has created new challenges in the operation and design of industrial flotation cells, particularly in terms of froth removal, because the distance the froth must travel increases with an increase in the flotation cell diameter. This has a negative impact on recovery. Physical froth flow modifiers can be used to improve froth removal. Their major functions are to modify and optimise the flow of the froth, improve froth drainage, reduce dead zones, and improve froth flow and removal dynamics. Therefore, physical froth flow modifiers are discussed, evaluated, and compared in this paper. The literature indicates that physical froth flow modifiers such as crowders and launders are used extensively as industrial solutions to enhance froth transport and recovery in large flotation cells. Other modifiers (including froth baffles and froth scrapers) have been found to have a profound effect on local froth phase sub-processes, including drainage and bubble coalescence. However, industrial uptake is either dwindling or limited to small-volume rectangular/U-shaped cells in the case of scrapers, or, there is no uptake at all in the case of froth baffles. Further research on how some of the physical modifiers (e.g., baffles and launders) impact the selectivity of particles is required.

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A Review of Flotation Physical Froth Flow Modifiers

Jera

Bhondayi

2021

Minerals

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The relationship between particle size, cell design and air recovery: the effect on flotation performance

Cited by 1 publication

References 0 publications

A Review of Flotation Physical Froth Flow Modifiers

A Review of Flotation Physical Froth Flow Modifiers

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