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hf free flotation of feldspar
Systematic review of feldspar beneficiation and its
Hydrofluoric acid (HF), which is the main regulator used in the flotation of feldspar, may cause serious environmental and health-related problems. Therefore, to Feldspar HF-free flotation method for feldspars separation from quartz January 2012 Conference: 26th International Mineral Processing Congress, IMPC 2012: HF-free flotation method for feldspars separation from quartz
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The comparison of non-hydrofluoric acid flotation methods used
In this study, non-hydrofluoric acid flotation methods used in feldspar-quartz separation were compared with each other and conventional HF/amine method. These results indicated that HPS leaned towards complex formations with Al-sites on the surface of feldspar, thereby reducing the adsorption of NaOL and Selective flotation of quartz from feldspar using hydroxypropyl
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Flotation Behavior, Collector Adsorption Mechanism of
A novel green cationic surfactant Poly (propylene glycol) bis (2-aminopropyl ether) (PEA) with multiple amine groups was utilized as a collector for Selective Flotation of Quartz and Feldspar Using Non-Ionic Surfactant In order to develop the HF-free flotation reagent system, the main objective of this investigation was to Selective Flotation of Quartz and Feldspar Using Non-Ionic
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Flotation of quartz from quartz-feldspar mixtures by the HF
Flotation of quartz from quartz-feldspar mixtures by the HF method Semantic Scholar. Semantic Scholar extracted view of "Flotation of quartz from quartz Cationic flotation of feldspar from this pre-concentrate was then carried out using a locally produced amine at pH 2.5 3.0 in presence of HF as a free silica depressant and a feldspar activator. Final feldspar concentrates assaying 80.8% to 89.5% feldspar mineral, 0.119% 0.127% Fe 2 O 3 and 16.84% 18.65% Al 2 O 3 that satisfy the requirements of the Differential Flotation of Some Egyptian Feldspars for Separation
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Flotation of quartz from quartz-feldspar mixtures by the HF
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).TON (1979) reported that HF creates a large difference in the HF-free feldspar flotation in producing a ceramic-grade feldspar concentrate from this material was tested. 2.3. Methods A sample of the Scottish granite was examined using both petrological microscope and electron microprobe to determine the liberation characteristics and chemistry of the feldspar.BRITISH GEOLOGICAL SURVEY Mineralogy Petrology Group
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Application of mixed collectors on quartz-feldspar by fluorine-free
Quartz and feldspar are usually exist in symbiosis in nature, and they are difficult to be separated effectively by conventional physical methods owing to their similarities in crystal structures and surface characteristics. Flotation is the most resultful method, and especially, flotation with hydrofluoric acid (HF) is the most efficient way. A HF free flotation process using a mixture of cationic and anionic collectors for the separation of feldspar from quartz was described by Katayanagi [8] and this process was reported to be applied in industrial practice [9]. The mixed collectors were composed of cationic alkyltrimethylene diamine and anionic petroleum sulfonate.Adsorption mechanism of mixed cationic/anionic collectors in feldspar
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Flotation and adsorption characteristics of albite and quartz with
So, to eliminate the harmful effects of HF use, flotation reagent producers and researchers have focused on an alternative HF-free flotation scheme for feldspar-quartz separation. This has been accomplished from time to time with success by the use of collector mixtures at again acidic pH conditions [45], [28], [41], [52].These reagent systems open up possibility for HF-free flotation separation of quartz from feldspar.Special importance is attached to the addition of suitable neutral organic molecules in this context.The comparison of non-hydrofluoric acid flotation methods used
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Understanding the flotation separation of Na and K feldspars in
In order to understand the mechanism of selective feldspar flotation, the amount of released Na + ions from microcline and albite minerals were measured in the presence of KCl, and the results are shown in Fig. 1.As seen from Fig. 1, the amount of Na + ions released from microcline and albite increased with increasing KCI concentration, In this study, non-hydrofluoric acid flotation methods used in feldspar-quartz separation were compared with each other and with the conventional HF/amine method.(PDF) Beneficiation of feldspar ore for application in the ceramic
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Revisiting flotation mechanisms of the selective separation of
2-) on feldspar surfaces at acidic pH as stated in the literature (Fuerstenau et al., 1985). Morever, Wang et al. (2018) stated that feldspar samples pretreated with HF showed more negative surface charge leading to better particle dispersion. Fig. 1. Zeta potential-pH profile of feldspar minerals (Karagüzel, 2005; Rattanakawin and Thacom, 2019)However, a HF-free flotation process using a mixture of the cationic and anionic collectors for the separation of feldspar from sand was described by Katayanagi [4] and the process was reported toReview of flotation of feldspar Request PDF ResearchGate
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Selective Flotation of Quartz and Feldspar Using Non-Ionic
PDF Size: 0.759 Mb. In order to develop the HF-free flotation reagent system, the main objective of this investigation was to study the possibility of separation of quartz from feldspar using non-ionic surfactants as the collector. The non-ionic surfactants used were polyoxyethyl cethyl ether (PECE) and polyethylene glycol monocethyl ether (PGME).It has been demonstrated that quartz could be floated in the presence of Ca 2 +, Ba 2 + and Sr 2 +, but feldspar does not respond to flotation with these reagent systems. These reagent systems open up possibility for (PDF) Selective Flotation of Quartz and Feldspar
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(PDF) Developing Effective Separation 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 fluorescenceIt has been demonstrated that quartz could be floated in the presence of Ca 2 +, Ba 2 + and Sr 2 +, but feldspar does not respond to flotation with these reagent systems. These reagent systems open up possibility for HF-free flotation separation of (PDF) Selective Flotation of Quartz and Feldspar Using Non-Ionic
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Effects of Ultrasound on Desliming Prior to Feldspar Flotation
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 Request PDF On Jan 1, 2012, Lev Filippov and others published HF-free flotation method for feldspars separation from quartz Find, read and cite all the research you need on ResearchGateHF-free flotation method for feldspars separation from quartz
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Flotation recovery of feldspar (a) and quartz (b) as a function of
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 fluorescencePDF An anionic-cationic flotation of two Egyptian feldspar samples, was delivered to another cond itioning tank for addition of HF acid (0.3 kg/t) as a free silica depressant at pH 2.5Differential Flotation of Some Egyptian Feldspars for Separation
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Separation of feldspar from quartz using EDTA as modifier
For the sink products, the feldspar content of 4-S-Fsp reaches 94.77% and the SiO 2 grade is 69.50% at a feldspar flotation recovery of 87.45%. methods that resort to HF-free reagents are used, especially for minerals composed essentially of K-feldspar and quartz (Bonansea and Ferrero, 2008; Jakobs and Dobias, 1991;
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