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 …

Feldspar minerals (KAlSi 3 O 8, NaAlSi 3 O 8, CaAl 2 Si 2 O 8) are the most abundant of aluminosilicate rock forming minerals, comprising 60% of the earth's crust.They are widely applied in the production of glass, ceramics, and as fillers and extenders [1,2] in the paper and paint industries.In order to improve the purity or the whiteness of feldspar, …

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)

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. ... Fig. 5a shows the flotation behaviors of spodumene and feldspar as a function of pH in the …

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 …

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.

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 ...

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 ...

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 ...

The pure mineral samples were taken from Jiangxi, China. The samples were manually broken and cleaned, and then ground with an agate proofing machine for about 1 mm. ... The flotation recovery of spodumene and feldspar in effect of collector type and concentration are shown in Fig. 6. Table 7 is the flotation separation results of …

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 ...

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 ...

Abstract. An improved method for producing high-purity quartz (Qtz) and potassium feldspar (Kfs) concentrates was developed using various chemical reagents. …

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 ...

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 …

The micro-flotation tests showed that the negative effect of feldspar slime on spodumene flotation could be reduced by using the mixed NaOL/DDA collector with mole ratio of 9/1. The scanning electron microscopic images and the adsorption test results indicated that the decrease of spodumene recovery was attributed to collector …

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 ...

Flotation is the most popular method for removing these impurities in the size range of −250 to +38 μm.Very fine size particles known as slimes in flotation (for feldspar usually −38 μm size) represent large surface areas and result in excess collector consumption. Slimes are usually discarded before flotation as they adversely affect ...

The micro-flotation tests revealed that there was little difference in the flotation of feldspar and quartz at pH 2, using H 2 SO 4 as pH regulator. After HF pretreatment, the floatability of feldspar …

The flotation performance of spodumene and feldspar with four size ranges (0–19, 19–38, 38–45 and 45–75 μm) are investigated in single mineral micro-flotation tests.

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 ...

Compared to coarse minerals, feldspar slime exhibits low flotation efficiency and selectivity due to its low mass, ... Analytically pure hydrochloric acid, supplied by Sinopharm Chemical Reagents Co. Ltd. was used as the leaching agent. Zirconia beads (NanorZr-93, Ø 0.6–0.8 mm), supplied by Guangzhou Pleased Grinding Media Co. Ltd. …

Abstract Flotation is the only technique that enables the selective separation of Na and K feldspar minerals from each other. In this study, the flotation separation of Na-feldspar (albite) and K ...

Froth Flotation. After being rinsed, if the sample contains feldspar and mica it will be frothed. To efficiently separate feldspar and mica from quartz, we have developed a procedure that makes feldspar and mica hydrophobic and the quartz becomes hydrophilic. By adding a carbonated solution to the sample, we can separate up to 95% of the 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.

Pure samples of spodumene and feldspar were all obtained from the Jia Ji Ka lithium mine in Ganzi District, Sichuan Province, China. The hand-sorted mineral crystals were crushed and then ground in a porcelain ball mill (XMB Φ240 × 90 mm, Prospection Machinery Factory, Wuhan). ... As the SA concentration increased, the feldspar …

This phenomenon explains the results of pure mineral micro-flotation of quartz and feldspar at pH 10.5 with low concentrations of CaCl 2 and NaOL. The dissipation shift line indicates that a low concentration of CaCl 2 formed a stable, rigid adsorption layer on both the quartz and feldspar sensor surfaces. With the further …

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 …

Analytically pure DTAB and NaOL were used as collectors, H 3 PO 4 and NaOH as pH regulators, and H 3 PO 4 as an apatite inhibitor. The flotation tests were performed with deionised water (ρ=18.3 μs/cm). All reagents used in the experiments were obtained from the Aladdin Chemical Reagent Network, and were analytically pure.

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, …

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.