K-feldspars are the preferred source of potassium in porcelain industry. Microcline and orthoclase, important K-feldspar minerals, are separated from other minerals by the flotation. In this study, a series of systematic zeta potential and microflotation tests were performed with two different microcline samples.
1. Introduction. Froth flotation is the selected method for the separation of quartz and feldspar. In the conventional process, feldspar is floated from quartz by using hydrofluoric acid (HF) as activator for the feldspar and a cationic collector (amine) at pH 2–3 (O'Meara, 1939). (1979) reported that HF creates a large difference in the …
the feldspar surface while depositing fluoride ions [15]. As a result of this mechanism, feldspar tends to be effectively depressed in the presence of collectors. Quartz could be easily floated, without using collectors, with HF solution and frother Brij C58 [19]. Selective flotation can be performed on feldspar from other impurities in the ...
The results of the flotation test showed that the yield of quartz products was 24.51% with a grade of 96.04% SiO 2, and the yield of feldspar products was 41.77% with a grade of 14.06% K 2 O and Na 2 O. The economic analysis demonstrated that the flotation process in this study yields a profit of 50.96 USD per ton of treated tailings.
The K-feldspar flotation was performed in alkaline environment (pH 10.5–11.6) with only the addition of NaOH as a modifier and non-ionic Brij58 as a frother, on a fluorine-amine activated bulk ...
DOI: 10.1016/S1003-6326(18)64878-2 Corpus ID: 104382288; Effects of BaCl2 on K-feldspar flotation using dodecyl amine chloride under natural pH @article{Song2018EffectsOB, title={Effects of BaCl2 on K-feldspar flotation using dodecyl amine chloride under natural pH}, author={Chao Song and Yuan-yuan Zhou and Quan …
Flotation technology without fluorite was studied to separate low-grade K-feldspar with quartz. It is shown in the results that qualified K-feldspar concentrate can be gained by grinding ...
Use of polyoxyethylene compounds in flotation of fluorite with fatty acids; K. Hanumantha Rao et al. Solution chemistry of mixed cationic/anionic collectors and flotation separation of feldspar from quartz; K. Hanumantha Rao et al. Flotation of mica minerals and selectivity between muscovite and biotite while using mixed anionic /cationic ...
The K-feldspar flotation was performed in alkaline environment (pH 10.5–11.6) with only the addition of NaOH as a modifier and non-ionic Brij58 as a frother, on a fluorine-amine activated bulk ...
4 Physicochem. Probl. Miner. Process., 59(6), 2023, 174724 3. Results and discussion 3.1. Micro-flotation Fig. 2 illustrates the effect of pH on the flotation recovery of K-feldspar, using 6×10-4 mol/L NaOL as a collector, both with and withoutmetal ions.Data analysis reveals a less floatability of K-feldspar
Effects of bivalent salts on the flotation separation of Na-feldspar from K-feldspar, Miner. Eng., 16, 551–554. Crossref. Web of Science. Google Scholar. Dogu I., Arol A.I. 2004. Separation of dark-colored minerals from feldspar by selective flocculation using starch, Powder Technol., 139, 258–263. Crossref.
Flotation separation (direct or reverse) followed by de-sliming and magnetic separation is the most important beneficiation technique for upgrading feldspar.
(a) Zeta potential of K-feldspar and K-feldspar in the presence of sodium silicate (b) zeta potential of chalcopyrit e and chalcopyrite in the presence of sodium silicate at pH 10.0 .
ELSEV:[ER Int. J. Miner. Process. 51 (1997) 67-79 IHTERIIRTI~,IOUMRL HInERRL PRO[ESSlUr. Mixed collector systems in flotation K. Hanumantha Rao *, K.S.E. Forssberg Division of Mineral Processing, Lule& University of Technology, S-971 87 Lule&, Sweden Accepted 14 April 1997 Abstract The interactions between differently structured …
Orthoclase is the most common potassium feldspar, forming the majority of potassium feldspar found in felsic plutonic igneous rocks, some high temperature veins, and higher-grade metamorphic rocks. Sanidine has a less ordered crystal structure than orthoclase and is primarily found in volcanic igneous rocks where magmas cooled more rapidly and ...
As shown in Fig. 8, the flotation of feldspar is enhanced by adding Fe 3+, and similar flotation recovery trends are observed in the four particle size ranges. The flotation recovery of feldspar increases gradually with an increase in pH and then decreases sharply after reaching a peak at a pH of approximately 7.5. In contrast with …
Selective separation of Na- and K-feldspar from weathered granites by flotation in HF medium Ceramics – Silikáty 54 (1) 60-64 (2010) 61 multivalent salts, a required selectivity in flotation is achieved [1]. Sodium ions depress Na-feldspar during the flotation of alkali feldspar at natural pH and in HF
It is now possible to free feldspar from all kinds of gangue minerals, e.g. mica, quartz and heavy minerals in addition to separation of both K and Na feldspars from each other [2]-[4]. Cationic flotation of feldspar (amine + HF) in presence of NaCl was conducted by CengizDemir of Turkey in 2010 to separate both Na- and K-feldspar [3].
Zeta potential measurement was performed with slurries of pure K-feldspar and chalcopyrite . In the absence of sodium silicate, the pulp pH was adjusted from 2 to 10 for tests with K-feldspar and chalcopyrite Zeta potential curves for K-feldspar with and without sodium silicate are shown in Fig. 4a.
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 …
1. Introduction. Elemental lithium is a desirable raw material, especially for the application in lithium-ion batteries and fuel cells that are currently attracting considerable interest worldwide [1], [2], [3].Spodumene (LiAl[SiO 3] 2), mainly found in silicate minerals, is regarded to be a lithium-rich ore of primary economic value [4].Froth flotation is one …
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-feldspar (microcline) minerals were investigated in the presence of K + ion as counter ion. In order to identify the role of K + ions on the selective separation …
The feldspar contained 18.13 % Al 2 O 3, 2.26 % Na 2 O, 9.57 % K 2 O and 68.39 % SiO 2 %. X-ray. Micro-flotation results. The floatability of apatite and feldspar using DMB and DDA are plotted in Fig. 3. It is observed that both apatite and feldspar had no natural floatability without a collector.
Flotation methods have been exploited for the extraction of potassium values by concentrating the K-feldspar mineral. In froth flotation, both cationic and anionic collectors are being used to ...
Larsen et al. (2021) stated that K-feldspar could float better than Na-feldspar in alkaline conditions using 2-3.10 -3 mol/dm 3 NaOH (pH: 11) and HF on the feldspar concentrate obtained from the classical feldspar-quartz separation.
The present study investigates the effects and mechanisms of aluminum (Al(III)) and iron (Fe(III)) ions on the flotation efficiency of potassium feldspar (K-feldspar) within oleate collector systems.
In this study, a selective flotation process for the separation of K-feldspar from Na-feldspar was developed for the beneficiation of a Norwegian microcline-quartz pegmatite sample.
Vidyadhar reported a mechanism of feldspar flotation from quartz with mixed alkyl diamine/ sulfonate collectors at pH = 2 (Vidyadhar and Rao, 2007). For alkaline flotation, El-Salmawy reported the ...
Albite/CaCl 2 system exhibits a distinct minimum around 10 −2 M CaCl 2 addition and provides the widest window of separation (Fig. 2).The flotation results reveal an order of hydrophobicity as (F, Na and K respectively denote feldspar, albite and microcline whereas Ba and Ca represent the added ions) KF–Ca > KF–Ba > NaF–Ba > …
The present study investigates the effects and mechanisms of aluminum (Al(III)) and iron (Fe(III)) ions on the flotation efficiency of potassium feldspar (K-feldspar) within oleate collector systems. The study employs micro-flotation experiments, solution chemistry calculations, zeta potential measurements, and FT-IR and XPS analyses to …
DOI: 10.1016/0892-6875(93)90101-R Corpus ID: 94717770; The role of alkaline earth cations in flotation separation of quartz from feldspar @article{ElSalmawy1993TheRO, title={The role of alkaline earth cations in flotation separation of quartz from feldspar}, author={M. S. El-Salmawy and Yoshitaka Nakahiro and Takahide Wakamatsu}, …
Selective separation of Na-feldspar (NaAl 3 SiO 8) from K-feldspar (KAl 3 SiO 8) by flotation appears to be the only alternative in commonly found mixed-type ore formations.For this purpose, various mechanisms in various studies have been proposed by which selective separation can be achieved in the presence of salt ions.
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 ...
This study demonstrates a high flotation separation selectivity between quartz and different types of feldspar, and that quartz can be readily floated from feldspar in diluted solutions of hydrofluoric acid (HF) by the aid of a frother.
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.
The study also develops adsorption models for the flotation of K-feldspar activated by Al(III) and Fe(III), revealing the synergistic impacts of metal ion hydrolysis products and sodium oleate in ...
The development of a process for the selective flotation of K-feldspar from Na-feldspar in alkaline environment has shown that it is possible to produce high grade K-feldspar concentrates at high recoveries from a 0–100 µm …