Concentration of K-feldspar from a pegmatitic feldspar ore by flotation
The K-feldspar flotation resulted in a K-feldspar concentrate of 14.3% K 2 O at 77% K-feldspar recovery and K 2 O/Na 2 O ratio of 10.4. The NaOH conditioning of the fluorine-amine activated feldspars resulted in rapid desorption of fluorine, and the selectivity of the process was assumed to result from the more rapid desorption of fluorine ...
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Flotation separation of feldspar from quartz using …
The results of flotation tests on the pure minerals of feldspar and quartz and the flotation test results on actual minerals showed that the selective flotation …
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The Use of Flotation and High-Intensity Magnetic …
The Use of Flotation and High-Intensity Magnetic Separation to Improve Feldspar Concentrate Quality. MINERAL DRESSING. Published: 12 March 2024. …
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Selective flotation of quartz from feldspar using …
These results indicated that HPS leaned towards complex formations with Al-sites on the surface of feldspar, thereby reducing the adsorption of NaOL and inhibiting …
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Selective flotation of K-feldspar from Na-feldspar in …
The K-feldspar flotation resulted in a K-feldspar concentrate of 14.3% K 2 O at 77% K-feldspar recovery and K 2 O/Na 2 O ratio of 10.4. The NaOH conditioning of the fluorine-amine activated feldspars resulted in rapid desorption of fluorine, and the selectivity of the process was assumed to result from the more rapid desorption of fluorine ...
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In situ adsorption of mixed collectors BHA/DDA in spodumene-feldspar
It is notable that the differences in flotation recoveries are 63.74% and 53.92% at molar ratios of 6:1 and 8:1, respectively, showing a tendency of diminution with increasing BHA:DDA molar ratio. The flotation recoveries of spodumene and feldspar are 88.31% and 24.57% at pH 8–9, respectively, at BHA:DDA molar ratio of 6:1.
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Amine–oleate interactions in feldspar flotation
Flotation tests show that the amine concentration ought to be kept lower than 1.47 × 10 −5 mol/l (≈5 ppm) to prevent feldspar loss during metal-oxides flotation stage and hence dewatering/washing operation after mica flotation seems to be a crucial step. Feldspar recovery in the concentrate, being 86.67% without dewatering/washing ...
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Adsorption mechanism of mixed cationic/anionic collectors in feldspar
The pure crystalline microcline and quartz mineral samples purchased from Gregory, Bottley & Lloyd Ltd., UK were used in the investigations. ... The mechanism of selective feldspar flotation from quartz in mixed alkyl diamine/sulfonate collectors at pH 2 is distinguished. The charge difference between microcline and quartz at pH ⩽ 2 with ...
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A Comparative Study of Quartz and Potassium Feldspar Flotation …
An improved method for producing high-purity quartz (Qtz) and potassium feldspar (Kfs) concentrates was developed using various chemical reagents. Froth flotation experiments on a Qtz–Kfs mixture showed that quartz could be selectively floated from Kfs in diluted hydrofluoric acid (HF) using a frother. Similarly, feldspar could be …
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Selective flotation of quartz and feldspar using non-ionic surfactant
A new flotation process separating feldspar from quartz was introduced and its principle was investigated. In this new flotation process, feldspar was floated from silica using n-alkyltrimethylene ...
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Chapter 6 Concentration of Feldspars Based on Specific
The lowest values are found in rather pure potassium feldspars; the highest values pertain to anorthite. Pure albite has a specific gravity of about 2.62. ... do not offer much useful information for feldspar flotation on a laboratory level. Exact formulas are needed for this type of separation. The published flow sheets, in most cases, do ...
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Selective flotation separation of spodumene from feldspar …
The pure mineral samples of spodumene and feldspar (albite) were obtained from the Jiajika Lithium Mine, Ganzi District of Sichuan province, China. The samples were hand-picked, crushed and ground in a laboratory porcelain mill, and −0.074 mm fractions were used in the experiments.Chemical composition analysis (Table 1) and X-ray …
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Flotation results of artificial mixture of feldspar and quartz …
The effect of hydrofluoric acid (HF) pretreatment on flotation of feldspar and quartz using dodecylamine (DDA) as collector was investigated by micro-flotation, zeta potential, pyrene fluorescence ...
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Review of flotation of feldspar
This paper reviews the application of flotation for the separation of feldspar from the other minerals with which it naturally occurs (such as quartz, clay minerals, …
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Mechanisms of amine–feldspar interaction in the
Flotation of pure minerals was performed to characterize the conditions for separation of silicates (palygorskite, quartz, orthoclase, albite, biotite, and muscovite) and Ca-bearing minerals ...
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Adsorption of N-tallow 1,3-propanediamine-dioleate …
Selective flotation of albite is accomplished from a natural feldspar material with tallow diamine-dioleate collector at pH 2 using sulfuric acid, only when the feed is deslimed prior to the bench scale flotation tests. An albite recovery exceeding 85% is achieved from a feed material containing about 50% albite.
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Effects of metal ions on the flotation separation of …
Pure spodumene, feldspar, and quartz were manually selected, crushed, ground, and wet-sieved to a size fraction of −74 + 38 μm. ... Moreover, the effects of these ions on the flotation of feldspar and quartz were different from those on the flotation of spodumene. Download : Download high-res image (447KB)
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Separation of Feldspar from Quartz: Mechanism of Mixed …
The results of pure minerals flotation under condition of pH=2.0 show that the hydrophobicity of feldspar is stronger than that of quartz in both single and anion-cation collector at the same ...
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Synergistic effect and co-adsorption mechanism of a
Pure samples of spodumene and feldspar were purchased from Yichun, Jiangxi Province, China. The two samples were crushed and ground using a porcelain mill and then dry-sieved to obtain the maximum amount of –74 + 38 µm size fraction. ... the positive influence of the mixed collector NaOL/CTAB on flotation separation process,a …
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The selective adsorption and flotation separation of …
Analytically pure OHA, SDS, and ferric chloride (FeCl 3. 6H 2 O) were. Flotation results analysis. Fig. 3 depicts the recovery differences between spodumene and feldspar treated with Fe-OHA or Fe-OHA-SDS under different conditions. Fig. 3(a) illustrates the recovery of spodumene and feldspar reduced with the enhanced ratio of …
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Effects of grinding media on the flotation behavior of …
The results of pure scheelite flotation show thatscheelite ground by CB has a better floatability than that ground by CIB, and the deleterious effect of CIB grinding on the flotation behavior of scheelites is verified by the actual scheelITE ore flotation experiments. ... In situ adsorption of mixed collectors BHA/DDA in spodumene-feldspar ...
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Effects and Mechanism of Fe3+ on Flotation …
Through flotation experiments, adsorption measurements, zeta potential testing, FTIR analysis and X-ray photoelectron spectroscopy (XPS), the mechanism of Fe 3+ on the surface of feldspar and epidote …
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Flotation of quartz from quartz-feldspar mixtures by the …
Flotation experiments performed on a quartz-feldspar mixture demonstrate that quartz can be floated selectively from feldspars in diluted solutions of hydrofluoric acid (HF) simply by the aid of a frother. High grades and good recoveries were obtained for both quartz and feldspars. A feldspar concentrate of 99.9% at a recovery of 95.6% was ...
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Selective flotation separation of spodumene from feldspar …
Micro-flotations of pure spodumene and feldspar were performed on an XFG flotation machine (spindle speed 1602 r/min) with a 40 mL small cell volume. The experimental steps were as follows: 2 g pure minerals and 38 mL ultrapure water were first added to the flotation cell; after stirring for 1 min, dilute hydrochloric acid or sodium …
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Feldspar flotation as a quartz-purification method in …
After the froth flotation, these small amounts of feldspar will be dissolved during further chemical treatment, e.g., the first leaching cycle for the removal of atmospheric 10 Be by concentrated HF. Our cell has been successfully applied to obtain pure quartz and feldspar used in CN and OSL dating [20,23]. Samples of up to 90 g allow for good ...
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KGS--Bull. 96, Pt. 6--Feldspar and Silica from River Sands in …
Originally published in 1952 as Kansas Geological Survey Bulletin 96, Part 6. Abstract. Six river and flood-plain sand samples from the vicinity of Kansas City, Wichita, Concordia, and Salina were treated by flotation methods to determine the feasibility of producing a feldspar concentrate and a silica concentrate for use in glass, glass fiber ...
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Mechanisms for the selective separation of spodumene from feldspar …
The pure spodumene was obtained from Minas Gerais, Brazil. In addition, the pure feldspar was obtained from Shandong, China. The pure spodumene and feldspar samples were hand selected to remove impurities, crushed, ground, and passed through standard Taylor sieve series to obtain the samples of −74 + 38 μm for flotation testing.
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Maximizing resource use—modified starch aids in selective …
For this study, the researchers used HPS in combination with magnesium chloride as the activator* and sodium oleate as the collector. They conducted micro-flotation tests on pure quartz and feldspar samples as well as bench-scale flotation tests on granite tailings.
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A New Flotation Technique for Feldspar-Quartz Separation
In this paper, the authors introduce a new flotation technique, a double collection flotation precess, which succeeds in separating feldspar from quartz effectively in weak acidic …
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Flotation Behavior, Collector Adsorption Mechanism of …
The mineral samples of feldspar-quartz associated ore (FQA) and pure quartz in this study were obtained from Sanming, Fujian province, China. Whether the samples are floated or ... terial was mixed with ultra-pure water in a 1500 mL flotation cell for 2 min. Then, 1500 μL 0.1 M cationic collector PEA solution was added into the slurry ...
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