The effect of particle size and some operating parameters in the separation tank and the downcomer on the Jameson cell recovery

Taşdemir, Adem; Taşdemir, Tuba; Öteyaka, Bahri

doi:10.1016/j.mineng.2007.08.007

Cited by 17 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One study by Tasdemir et al (2007) considered the effect of variation in operating parameters on particle size in a Jameson cell, with increasing concentrate flowrate associated with increased coarse particle recovery, and an increased jet length and velocity resulting in the increase of fine particle recovery at the expense of coarse particles. One of the challenges of investigating the effect of particle size at industrial scale is that there is typically little control over the feed particle size, with fluctuations being driven by changes in the milling circuit.…”

Section: Introductionmentioning

confidence: 99%

The effect of particle size distribution on froth stability in flotation

Norori-McCormac

Brito-Parada

Hadler

et al. 2017

Separation and Purification Technology

View full text Add to dashboard Cite

Separation of particles of different surface properties using froth flotation is a widely-used industrial process, particularly in the minerals industry where it is used to concentrate minerals from ore. One of the key challenges in developing models to predict flotation performance is the interdependent nature of the process variables and operating parameters, which limits the application of optimising process control strategies at industrial scale. Froth stability, which can be quantified using air recovery (the fraction of air entering a flotation cell that overflows in the concentrate as unburst bubbles), has been shown to be linked to flotation separation performance, with stable froths yielding improved mineral recoveries. While it is widely acknowledged that there is an optimum particle size range for collection of particles in the pulp phase, the role of particle size on the measured air recovery and the resulting link to changes in flotation performance is less well understood. This is related to the difficulty in separating particle size and liberation effects.In this work, the effects of particle size distribution on air recovery are studied in a single species (silica) system using a continuous steady-state laboratory flotation cell. This allows an investigation into the effects of particle size distribution only on froth stability, using solids content and solids recovery as indicators of flotation performance. It is shown that, as the cell air rate is increased, the air recovery of the silica system passes through a peak, exhibiting the same froth behaviour as measured industrially. The air recovery profiles of systems with three different particle size distributions (d80 of 89.6, 103.5 and 157.1 m) are compared. The results show that, at lower air rates, the intermediate particle size distribution (103.5 m) yields the most stable froth, while at higher air rates, the finest particles (89.6 m) result in higher air recoveries. This is subsequently linked to changes in flotation performance. The results presented here highlight, for the first time, the link between particle size distribution in flotation feeds, air recovery and flotation performance. The results demonstrate that there is an optimal air rate for each particle size distribution, therefore changes in particle size distribution in the feed to flotation cells require a change in air rate in order to maximise mineral recovery.

show abstract

Section: Introductionmentioning

confidence: 99%

The effect of particle size distribution on froth stability in flotation

Norori-McCormac

Brito-Parada

Hadler

et al. 2017

Separation and Purification Technology

View full text Add to dashboard Cite

show abstract

“…However, the cause for the same change within the downcomer was due to the inadequate quantities of air bubbles and insufficient retention time of particles in the downcomer. The relationship between jet velocity (cm s −1 ) and air entrainment rate (L m −1 ) for various jet lengths, nozzle diameters and downcomer diameters was discussed in coal flotation by Taş demir et al [31] who stated that gas hold-up and air entrainment rate increased as the jet velocity increased. It was pointed out that an increase in the total combustible recovery obtained about 7.8% using the low jet velocity (11.3 m s −1 ) and normal operating range (V j ; 18.0 cm s −1 ) [29].…”

Section: Parametermentioning

confidence: 99%

“…Today, Jameson cell is used for the beneficiation of Pb/Zn and coal slimes in various mineral processing facilities particularly in Australia, America, India and South Africa [29]. While there are several literature studies regarding its application to industrial mineral samples such as pure quartz [30,31], barite [32] and calcite [32], there are no studies regarding the selective flotation of industrial materials. Jameson cell generates 400-600 m bubbles in size [33].…”

Section: Introductionmentioning

confidence: 99%

“…Since lack of collision is the biggest problem in fine particles, flotation efficiency of particles is higher compared to other methods, particularly mechanical cells [34,35]. Studies carried out on Jameson cell on the effect of particle size showed that fine particles were able to float at higher efficiencies compared to large particles [30,31].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stage-wise flotation for the removal of colored minerals from feldspathic slimes using laboratory scale Jameson cell

Karagüzel

Çobanoğlu

2010

Separation and Purification Technology

View full text Add to dashboard Cite

“…The fine particles and particulate matters are efficiently separated by flotation method (Zamboulis et al, 2011). The grade of flotation and recovery process is mostly affected by different parameters (Taşdemir et al, 2007). Such parameters include particle size, bubble volume, solution pH, pulp density, concentration of the collector and time of conditioning.…”

Section: Introductionmentioning

confidence: 99%

Processing of Malachite from the Shigar Region of Gilgit-Baltistan by Optimizing Some Operational Parameters of Floatation

Qureshi

Ababs²,

Khan

et al. 2020

IJEEG

View full text Add to dashboard Cite

In this study, optimal operation parameters for the extraction of copper (Cu) from malachite ore of the Shigar region of Gilgit-Baltistan were identified. The effects of some operational parameters on Cu recovery has been identified. The pulp density (25%) and other parameters are kept constant throughout the process. Crushing and grinding were carried out and obtained the desired size range of flotation. The sample of malachite ore has been overwhelmed using roll and jaw crushers. The final product of roll crusher was finer than that of jaw crusher. It has been observed that more fines were obtained with increasing grinding time. After a certain time, there is little effect on grinding. With decreasing particle size, copper recovery increased. At 50 µm the recovery is almost 90% while at 325µm, recovery decreased to 46%. With increasing pH copper recovery is increased and at 12.5% pH, maximum recovery (up to 90%) has been achieved. The optimum parameters for the copper extraction from malachite ore of the Shigar valley are the pH 12.5%, 50-micron particle size and grinding time of 25 minutes.

show abstract

The effect of particle size and some operating parameters in the separation tank and the downcomer on the Jameson cell recovery

Cited by 17 publications

References 11 publications

The effect of particle size distribution on froth stability in flotation

The effect of particle size distribution on froth stability in flotation

Stage-wise flotation for the removal of colored minerals from feldspathic slimes using laboratory scale Jameson cell

Processing of Malachite from the Shigar Region of Gilgit-Baltistan by Optimizing Some Operational Parameters of Floatation

Contact Info

Product

Resources

About