The limits of fine particle flotation

Miettinen, Tatu; Ralston, John; Fornasiero, Daniel

doi:10.1016/j.mineng.2009.12.006

Cited by 351 publications

(134 citation statements)

References 81 publications

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“…In addition, when the pH of pulp is high (e.g., above 10), the effect of HCPS on enhancing ultra-fine scheelite particles flotation seems to be weaken, which may be mainly attributed to the increased foaming ability of NaOl and associated entrainment [25]. Decreasing bubble size and increasing apparent particle size are the two basic approaches to improving fine and ultrafine mineral flotation [3]. Previous research studies have proven that NBs Decreasing bubble size and increasing apparent particle size are the two basic approaches to improving fine and ultrafine mineral flotation [3].…”

Section: Shear Yield Stress Measurementsmentioning

confidence: 99%

“…Previous research studies have proven that NBs Decreasing bubble size and increasing apparent particle size are the two basic approaches to improving fine and ultrafine mineral flotation [3]. Previous research studies have proven that NBs Decreasing bubble size and increasing apparent particle size are the two basic approaches to improving fine and ultrafine mineral flotation [3]. Previous research studies have proven that NBs generated in the process of HC play roles in both of these two approaches, which are also convinced to be the main contributors for HC-enhanced flotation [26,27].…”

Section: Shear Yield Stress Measurementsmentioning

confidence: 99%

“…As a result, there are always a large number of micro-granular slimes in the scheelite pulp, which weakens the flotation environment and leads to the loss of the valuable minerals [2]. Decreasing the size of flotation bubbles is regarded as an efficient way to recover the fine fractions [3]. In the past two to three decades, a lot of research work has been carried out on the development of air bubbles' sparger design to generate bubbles that are small enough to be used for fine minerals flotation.…”

Section: Introductionmentioning

confidence: 99%

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Different Flotation Performance of Ultrafine Scheelite under Two Hydrodynamic Cavitation Modes

Zhou

Shi

et al. 2018

Minerals

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Abstract:In industrial practice, hydrodynamic cavitation (HC) is commonly triggered by jetting either reagent solution or pulp. Although both methods can enhance mineral flotation, are their roles the same? There are few research studies in the field, which severely limits our understanding on mineral flotation combined with HC. Therefore, in this study, the flotation of ultrafine scheelite with HC pretreatments of reagent solution and pulp (abbreviated to be HCPS and HCPP, respectively) was studied and compared through flotation tests, zeta potential analysis, microscope tests, and shear yield stress measurements. The results of flotation tests show that both HCPS and HCPP can enhance the final flotation performance, but in general, HCPP leads to greater improvements on the final flotation recovery. The presence of (hydrophobized) scheelite particles brings extra gas nuclei for the cavitation-flotation system, suggesting that more NBs may be produced in the case of HCPP compared with HCPS. These tiny bubbles remarkably reduce the size distribution of bubbles in the flotation system, thus increasing the particle-bubbles collision probability. Increase in particle aggregation may be another reason why flotation with HCPP results in a higher flotation recovery. The adherence of NBs on hydrophobized particles decreases the (absolute) surface charge of the solids, resulting in a smaller repulsive force among particles and more significant particle aggregation, which is confirmed by the microscope tests and shear yield stress measurements.

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Section: Shear Yield Stress Measurementsmentioning

confidence: 99%

Section: Shear Yield Stress Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Different Flotation Performance of Ultrafine Scheelite under Two Hydrodynamic Cavitation Modes

Zhou

Shi

et al. 2018

Minerals

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“…A ocorrência da colisão entre a bolha e a partícula será determinada pela avaliação das forças que podem desviar a trajetória da partícula das linhas de fluxo próximas à superfície da bolha (Miettinen et al, 2010). Na Figura 2 são apresentados os mecanismos de colisão entre bolha e partícula listados por Miettinen et al, (2010 (Miettinen et al, 2010).…”

Section: Colisão Entre Bolha E Partículaunclassified

“…Na Figura 2 são apresentados os mecanismos de colisão entre bolha e partícula listados por Miettinen et al, (2010 (Miettinen et al, 2010). …”

Section: Colisão Entre Bolha E Partículaunclassified

Influência da dissipação de energia na cinética da flotação aniônica direta de apatita em meio básico.

Testa¹

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Protein Skimming, Flotation, Coagulation and Flocculation

2013

Aquaculture Engineering

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The limits of fine particle flotation

Cited by 351 publications

References 81 publications

Different Flotation Performance of Ultrafine Scheelite under Two Hydrodynamic Cavitation Modes

Different Flotation Performance of Ultrafine Scheelite under Two Hydrodynamic Cavitation Modes

Influência da dissipação de energia na cinética da flotação aniônica direta de apatita em meio básico.

Protein Skimming, Flotation, Coagulation and Flocculation

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