Testing the k–Sb relationship at the microscale

Hernandez-Aguilar, Jose R.; Rao, S. Ramachandra; Finch, J.A.

doi:10.1016/j.mineng.2004.10.003

Cited by 28 publications

(5 citation statements)

References 8 publications

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“…The bubble size in flotation was measured using the photographic method (Chen et al, 2001;Hernandez-Aguilar et al, 2005). A CCD camera was used to capture images of bubbles in a viewing chamber as they rose from the pulp zone through a tube.…”

Section: Bubble Size Measurementmentioning

confidence: 99%

Benchmarking flotation performance: Single minerals

Muganda

Zanin

Grano

2011

International Journal of Mineral Processing

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Section: Bubble Size Measurementmentioning

confidence: 99%

Benchmarking flotation performance: Single minerals

Muganda

Zanin

Grano

2011

International Journal of Mineral Processing

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“…Figure 15b shows that at a low S b value of 24.08 s −1 , the flotation rate constant obtained was 1.6 min −1 , and it decreased significantly with the increase in the value of S b . Even though the lowest flotation rate constant was observed for a 4 L/min aeration rate, it steeply increased with the increase in the S b value, as suggested by [14,25,26]. In addition, it is clearly shown that the maximum rate constant of 2.17 min −1 was observed at a maximum S b value 101.58 s −1 for a higher aeration rate.…”

Section: Effect Of the Bubble Surface Area Flux On The Copper Rate Comentioning

confidence: 84%

The Effect of Hydrodynamic Conditions on the Selective Flotation of Fully Liberated Low Grade Copper-Nickel Ore

et al. 2021

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Low grade sulfide ores are difficult to process due to their composite mineralogy and their fine grained dissemination with gangue minerals. Therefore, fine grinding of such ores becomes essential to liberate valuable minerals. In this research, selective flotation was carried out using two pitched blade turbine impellers with diameters of 6 cm and 7 cm to float copper and nickel. The main focus of this research was to generate optimum hydrodynamic conditions that can effectively separate nickel and copper from gangue minerals. In addition, we investigated the effects of superficial gas velocity, impeller speed, bubble size distribution, and bubble surface area flux on the flotation recovery and rate constant. The results demonstrated that a 7 cm impeller comparatively produced optimum hydrodynamic conditions that improved Cu-Ni recovery and the rate constant. The maximum copper and nickel recoveries in the 7 cm impeller tests were observed at 93.1% and 72.5%, respectively. However, a significant decrease in the flotation rate of nickel was observed, due to entrainment of nickel in copper concentrate and the slime coating of gangue minerals on the nickel particle surfaces.

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“…The difference between the two may be that actual flotation, as in Figure 2, works with bubble and particle size distributions that hide the relationships apparent when idealized systems are tested. Hernandez-Aguilar et al [92] measured k-S b on micro-scale with bubble size distributions and found that a linear k-S b (i.e., k-(d b ) −1 ) was adequate but cautioned that the data, even though collected using closely controlled conditions, could be fitted to other d b functions as well.…”

Section: Bubble-particle Attachmentsmentioning

confidence: 99%

The Effects of Frothers and Particles on the Characteristics of Pulp and Froth Properties in Flotation—A Critical Review

Zhang¹

2016

JMMCE

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The pulp and froth zones are the main components of froth flotation as it defines both quality of the end product and overall efficiency. The importance of the properties of the two zones, which include pulp hydrodynamics, froth bubble coalescence rate, water overflow rate, air recovery, etc., is being increasingly recognized. The properties are depending not only on the type and concentration of the frother but also on the nature and amount of the particles present in the flotation system, and as well as the frother-particle interactions and potentially of bubble-particle interactions. To date, there is no specific criterion to quantify pulp and froth properties through the interactions between frothers and particles because the various related mechanisms occurring in the pulp and froth are not fully understood. Linking the properties to the metallurgical performance is also challenged. In order to better understand the effect of these issues in flotation, in this review paper, the past and recently published articles relevant to characterizations of pulp and froth properties are widely reviewed; the findings and the gap of knowledge in this area are highlighted for further research.

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Testing the k–Sb relationship at the microscale

Cited by 28 publications

References 8 publications

Benchmarking flotation performance: Single minerals

Benchmarking flotation performance: Single minerals

The Effect of Hydrodynamic Conditions on the Selective Flotation of Fully Liberated Low Grade Copper-Nickel Ore

The Effects of Frothers and Particles on the Characteristics of Pulp and Froth Properties in Flotation—A Critical Review

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