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

Karagüzel, Cengiz; Çobanoğlu, Gülşah

doi:10.1016/j.seppur.2010.05.012

Cited by 14 publications

(8 citation statements)

References 28 publications

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“…As is well known, particle liberation plays an important role in flotation processes, as demonstrated by many flotation studies of various types of ores [4][5][6][7][8][9]. This issue in turn is of significant importance for determining the grinding cost for an industrial-scale process.…”

Section: Determination Of the Optimum Particle Sizementioning

confidence: 99%

“…Therefore, in order to ensure these qualifications, the removal of iron and titanium-bearing minerals (mica, iron oxides, titanium oxides, tourmaline) and also the removal of quartz from feldspar is required. In the literature, numerous papers have been devoted to investigating the effect of different parameters such as methods, reagent type, pH adjusters, different flowsheets with/without the usage of hydrofluoric acid (HF) and other flotation-related parameters, in order to obtain higher quality feldspar and quartz products [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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An Alternative Source for Ceramics and Glass Raw Materials: Augen-Gneiss

et al. 2017

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Due to the depletion of well-known feldspar reserves in the forms of granite, trachyte and pegmatite, many investigations are focused on new and economic alternatives to these resources. Of these, gneiss is a metamorphic rock type, which is characterized by dark and light colored minerals including feldspar and quartz. In this study, Augen-Gneiss rock was subjected to flotation tests to produce alkali (Na + Ca) feldspar and quartz concentrates by adapting different flotation conditions with/without hydrofluoric acid (HF). During these tests, the effect of particle size and different reagent combinations were investigated. The results of these tests showed that, in the presence of HF, a saleable feldspar concentrate with 0.04% Fe 2 O 3 content and a saleable quartz concentrate with 98.45% SiO 2 content were obtained. Products with similar qualities to a feldspar concentrate with 0.13% Fe 2 O 3 and a quartz concentrate with 92.53% SiO 2 content were produced without HF. The results of these tests clearly showed that, compared to other types of origin, saleable quality feldspar and quartz could well be enriched with/without HF from Augen-Gneiss rock.

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Section: Determination Of the Optimum Particle Sizementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Alternative Source for Ceramics and Glass Raw Materials: Augen-Gneiss

et al. 2017

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“…The negative effects of slimes during froth flotation for feldspar ores were also revealed by many researchers [4,15,[26][27][28]. It was stated that fine particle minerals not only effect as slime coating but also affect pulp rheology and the subsequent mineral flotation.…”

Section: Introductionmentioning

confidence: 90%

“…In feldspar flotation, the minerals causing slime formation have similar mineralogical properties to other minerals trying to be floated during the mica and and heavy mineral removal flotation stage. This causes unsuccesful selective separation and also excessive reagent consumption [19,27,[30][31][32]. For these reasons, removal of slimes for feldspar ore flotation is a necessity prior to mica and heavy mineral separation [10,13,16,19,[33][34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Effects of Ultrasound on Desliming Prior to Feldspar Flotation

Malayoğlu

Özkan

2019

Minerals

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In this study, the effects of ultrasound on removal of impurities from raw feldspar were investigated by testing with a newly developed flotation cell with various frequency and power intensities prior to multistage feldspar flotation. Particularly, the quality of feldspar concentrates, the volume of removed slimes and the content of impurities were taken into account to reveal the impacts. Two representative feldspar ore samples taken from the Milas-Mugla region in Turkey were separately tested for desliming and flotation by conventional and ultrasonic methods under similar conditions and the results were compared to each other in terms of the quantity and the quality of the removed slimes and the final feldspar flotation concentrate. As a result, during desliming stage by using ultrasound, the volume of removed slimes was reduced by approximately 45% when compared to the conventional slime removal methods. Moreover, the impurity contents were doubled inside slimes when ultrasound was used. These outcomes lead to significant success in terms of reducing losses during the desliming stage and production of high quality feldspar concentrates by froth flotation assisted by ultrasound.

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“…Extensive studies on the suction capacity and bubble size distribution (BSD) of traditional mechanical flotation machines have indicated that these functions are easily influenced by the structural parameters of an "impeller stator" [8], which has higher energy consumption due to mechanical agitation [9] and larger bubbles, compared to nanobubble column flotation [10]. For the Jameson cell, air in the suction mode is continuously pumped and carried by the velocity difference between the high-speed pulp flow and air flow, where air is suctioned at low pressure around the core area of the jet flow [11]; a large portion of the bubbles generated in the jet suction mode have a small size [12], such as nanobubbles, and were two orders of magnitude smaller than conventional the bottom of the axis for adjusting the dispersion of mineral particles, the uniformity of bubbles, and the degree of turbulence of the slurry; (4) a round mixing tank for mixing the slurry; (5) a draft tube for draining the slurry to the stirring impeller; and (6) a canopy hood for dispersing the slurry evenly into the stirring impeller and circulating tank.…”

Section: Introductionmentioning

confidence: 99%

Bubble Size Distribution Characteristics of a Jet-Stirring Coupling Flotation Device

et al. 2019

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In this study, a new jet-stirring coupling flotation device that incorporates the advantages of three conventional flotation machines (specifically, Jameson cell, mechanical flotation cell, flotation column) was designed based on jet suction. The suction capacity of a double cosine self-aspirated nozzle utilized by the device was analyzed under different feeding pressures, and the effects of frother concentration, feeding pressure, suction capacity, and height of sampling location on the bubble size distribution (BSD) were investigated using a high-speed video system. It was found that a large amount of air was sucked into the flotation cell by the self-aspirated nozzle arranged in a non-submerged manner, which met the requirements of flotation in terms of the suction amount of air. The suction capacity showed a positive linear correlation with negative pressure inside the nozzle. When the Methyl isobutyl carbinol (MIBC) concentration reached the critical coalescence concentration (CCC), the bubble size stabilized at approximately 0.31 mm, which was smaller than the bubble size produced by the conventional flotation machine. This indicated that bubbles suitable for flotation were generated. D 32 linearly decreased with increasing of feeding pressures and conversely increased with increasing suction capacities and sampling location heights, independent of the frother concentration. sized bubbles [10]. A Venturi type bubble generator can produce a large number of micro bubbles [13] and the Jameson cell has a low energy consumption [14]. It has been found that a rotational flow in the cyclonic-static micro-bubble flotation column is a benefit for the particles colliding with and attaching to the bubbles, and the probability of particle attachment substantially increased [15]. A non-uniform filling method was proposed to optimize the flow field. Filling with a non-uniform sieve in the cyclonic-static micro-bubble flotation column was proved to be more effective on bubble size distribution equalization [16]. In addition, it was found that rotational flow improves the effect of mineralization and increases the recovery of coarse coal particles in the cyclonic-static micro-bubble flotation column [17]. Moreover, a nozzle equipped with a long throat and arranged in a submerged manner was studied [18]. It was observed that the suction capacity of the nozzle increased with the nozzle distance and cross-section ratio. Furthermore, it resulted in a high jet kinetic energy dissipation rate. However, when exposed to air, either the suction capacity decreased significantly, or the nozzle failed to work properly.As we all know, the processes of collision, detachment, and attachment between the bubbles and the coal particles complete the final coal slime flotation process [19]. The bubble is the main carrier of the flotation process. The bubble size distribution has a significant influence on the selectivity of the bubble and the ability to carry the target mineral [20]. Bubbles of different sizes have different abilities to sepa...

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

Cited by 14 publications

References 28 publications

An Alternative Source for Ceramics and Glass Raw Materials: Augen-Gneiss

An Alternative Source for Ceramics and Glass Raw Materials: Augen-Gneiss

Effects of Ultrasound on Desliming Prior to Feldspar Flotation

Bubble Size Distribution Characteristics of a Jet-Stirring Coupling Flotation Device

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