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flotation fluorite depressing po
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Depressing behaviors and mechanism of an eco-friendly …
It could be found that GM could strongly depressed the flotation of cassiterite but nearly affected the fluorite flotation, and an excellent separation effect (fluorite recovery of 97.43%, cassiterite recovery of 4.54%) could be obtained at the conditions of pH 8.00, GM dosage of 1.0 mg/L and SPA dosage of 80 mg/L.
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Flotation Separation of Scheelite from Fluorite Using …
The depressing properties of sodium polyacrylate (PA-Na) for scheelite and fluorite were studied by micro-flotation tests, infrared spectroscopy (IR), zeta potentials, X-ray photoelectron ...
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Flotation separation of fluorite from calcite by using …
The flotation separation of fluorite from calcite is realized when the adsorption amount on calcite surface is higher than that on fluorite surface (Tian et al., 2019a). Nevertheless, the depressive effect is greatly affected by the pH value ( Tian et al., 2019a ), with the excellent selective depressive effect only achieved in the pH range of ...
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Investigation of the depressants involved in the selective …
In this study, a model of the scheelite-fluorite flotation system was constructed to investigate the interaction between sodium silicate and sodium oleate in …
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Flotation separation of bastnaesite from fluorite with an …
As the depressant of fluorite, a chemically pure PESA with a molecular weight between 400 and 1500 was provided by Shandong Yousuo Chemical Technology Co., Ltd., and its chemical structure was given in Fig. 2.The analytical-grade Octyl hydroxamic acid purchased from Shanghai Macklin Biochemical Co., Ltd. was employed …
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Flotation separation of fluorite from calcite by using …
The flotation of mixed minerals showed that 94% of the calcite was successfully depressed by the valonea extract, and 95% recovery of the fluorite was achieved in the subsequent flotation with ...
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Replacing Petrov's process with atmospheric flotation using …
DOI: 10.1016/J.MINENG.2019.106053 Corpus ID: 108593691; Replacing Petrov's process with atmospheric flotation using Pb-BHA complexes for separating scheelite from fluorite @article{Han2019ReplacingPP, title={Replacing Petrov's process with atmospheric flotation using Pb-BHA complexes for separating scheelite from fluorite}, author={Hai …
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Solution Chemistry Study of Salt-type Mineral Flotation …
Selective depressing conditions for different salt-type minerals using Na 2 SiO 3 and Na 3 PO 4 as depressants were determined on the basis of solution chemistry calculations of the systems. ... Flotation of fluorite from ores by using acidized water glass as depressant. Minerals Engineering 2013, 45, 142-145.
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Selective adsorption mechanism of SHMP onto fine fluorite …
The flotation results indicated that when sodium oleate (NaOL) was used as the collector, SHMP was 2.5 × 10 −6 M, showing an outstanding flotation separation of bastnaesite from fine fluorite. The contact angle and zeta potential results showed that SHMP selectively increased the surface hydrophobicity and decreased the surface …
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Effect of an Environment-Friendly Depressant on the …
To overcome the difficulty of separating bastnaesite from fluorite through the flotation technique, the present study examined the suitability of sodium alginate (SA) …
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Selective flotation separation of fluorite from calcite by …
In this study, the effect of flaxseed gum (FG) on selective flotation separation of fluorite from calcite using sodium oleate (NaOl) as collector was investigated.
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Improving the finely disseminated carbonate-fluorite ore flotation …
The article presents experimental research into intensification of fine-disseminated carbonate-fluorite ore flotation by adding FLOTOL-7,9 agent. It is shown that the optimal agent modes allow the yield of the saleable fluorite product of above 90% CaF2 grade at higher than 60% fluorite extraction.
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Solution Chemistry Study of Salt-type Mineral Flotation …
The surface precipitation of calcium silicate or phosphate on fluorite and calcite was identified as a major depression mechanism. Selective depressing …
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Evaluation of 2-phosphatebutane-1, 2, 4-tricarboxylic acid as …
It is hard to separate barite from fluorite due to their similar surface properties. In this work, to achieve the separation of barite from fluorite, 2-phosphatebutane-1, 2, 4-tricarboxylic acid (PBTCA) was used to depress fluorite, and the floatability, separation efficiency and mechanism were researched by micro-flotation …
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Role of calcium ions and their interaction with depressants in
The commonly utilized flotation scheme in phosphate industry is reverse flotation using fatty acids in acidic media adjusted by H2SO4. The acidity of the flotation pulp results in presence of different ionic species that play a crucial role in modifying the minerals' surfaces. Therefore, the flotation of pure phosphate was investigated in …
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Flotation separation of fluorite from calcite using …
Micro-flotation tests of the two minerals were studied to show the depressing effect of sulfonated lignite on fluorite and calcite. The mechanism of sulfonated lignite was investigated by Fourier transform infrared spectroscopy (FTIR) measurement, contact angle measurement and X-ray photoelectron spectroscopy (XPS) measurement.
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Depressing effect of sodium hexametaphosphate on apatite in flotation
The separation of rutile from apatite by flotation and the mechanism of depressing the apatite of sodium hexametaphosphate were studied. The results showed that rutile and apatite could be separated by using alkyl-mino-bismethylene phosphoric acid and sodium hexametaphosphate as a collector and a regulator, respectively. ... (H 2 PO …
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Optimal Depressants and Collector Dosage in Fluorite Flotation …
Alternative processes have been proposed for selective separation of fluorite and gangue minerals (carbonates and silicates) present in fluorspar ores. Calcination and gravity separation processes are methods that have low efficiency and high cost. Flotation is a chemical process that becomes important when high ore grades are …
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Effect of an Environment-Friendly Depressant on the Flotation …
The flotation results showed that the recovery of fluorite decreased by 89.71% when 4 mg/L PESA was added to the flotation system, while the bastnaesite recovery only exhibited a slight reduction ...
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Acidized sodium silicate
Flotation tests on fluorite ores with various carbonate content (CaCO 3 contents from 4.43% to 74.40%) were carried out using acidized sodium silicate (A.S.S.) as modifier and oleic acid as collector. A high purity fluorite concentrate (99% CaF 2 ) was obtained. It was demonstrated that A.S.S. has an activating effect on fluorite and a selective …
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The flotation separation of fluorite from calcite using …
The floatability of fluorite and calcite as a function of NaOl dosage at pH 8.0 is shown in Fig. 4.As seen in Fig. 4, flotation recoveries of fluorite and calcite significantly increased with increasing dosage of NaOl and remained constant at high collector concentration.The flotation recovery of both fluorite and calcite was over 90 % using …
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Flotation separation of fluorite from calcite using sulfonated …
In this study, the pyrolysis liquid of pine (PLP) was used as a novel depressant to separate fluorite from calcite. Flotation experiments revealed that the PLP …
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[PDF] Study on synergistic inhibition and mechanism of flotation …
At present, the separation technology of fluorite and calcite is still immature, and the research in this paper can promote the improvement of the separation technology of fluorite and calcite. The selective inhibition mechanism of tannin and humate sodium on calcite was studied by means of actual ore flotation test, single mineral flotation test, …
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Experimental and density functional theory studies of the …
Cu 2+ was found to have intensive and selective depressing effects on fluorite in the flotation separation of cassiterite from fluorite using 2-carboxyethylphenylphosphinic acid (CEPPA) as a collector at pH 4.0. The depressing mechanism was investigated by flotation tests, zeta potential measurements, X-ray …
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Investigation of two-stage depressing by using hydrophilic …
Flotation experiments indicated that GG exhibited strong depressing effect on the barite flotation, whilst it showed little impact on the fluorite flotation. Zeta potential tests and surface wettability analyses demonstrated that GG intensely adhered onto barite and strongly prevented the subsequent NaOL adsorption, while it barely affected the ...
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The effect of sodium alginate on the flotation separation of scheelite
Flotation results showed that sodium alginate could selectively depress the flotation of calcite and fluorite in pH range of 7–12 when it was added before sodium oleate. ... Liu et al., 2016). Phosphates, such as sodium phosphate (Na 3 PO 4), sodium pyrophosphate (Na 4 P 2 O 7) and ... The mechanism of sodium silicate depressing …
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Optimal Depressants and Collector Dosage in Fluorite …
Depressants in fluorite flotation, which are used for decreasing the floatability of calcite and silica, mainly include some inorganic salts. Sodium silicate commonly known as water …
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Flotation Depressants
First let's change the amount of the Flotation Depressants used. The valuable mineral that isn't liberated from the unwanted mineral will begin to be depressed along with the waste. For the floatation operator, the change that will become most apparent is, that the color of the froth will begin to reflect more of the wanted mineral's ...
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Comparison Between Performance of Fluorite Flotation …
Fluorite is an important industrial mineral composed of calcium and fluorine (CaF2). This mineral is widely distributed through different deposits. However, in most cases, fluorite is tightly associated with gangue, such as calcite and quartz. In this paper, different depressants are tested in the flotation of fluorite in two different laboratory …
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Froth flotation of fluorite: A review
It is followed by a systematic review of common reagents involved in fluorite flotation, including collectors, depressants, regulators, modifiers, and frothers. Specifically, the synergistic effect of collectors and depressants on the recovery of fluorite is …
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1-Hydroxyethylidene-1,1-diphosphonic acid used as pH …
The results of flotation experiments show that the reverse flotation separation of fluorite from calcite at pH 6.0 can be well achieved with the reagent scheme of 3 × 10 −5 mol/L HEDP and 6 × 10 −5 mol/L NaOL. Moreover, by adjusting the pH to 8.0, the fluorite flotation depressed at pH 6.0. Declaration of Competing Interest
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Flotation separation of fluorite from calcite by a new …
Floatation test results showed that the flotation difference between fluorite and calcite was expanded by curdlan, thus enabling the flotation separation of fluorite/calcite. The …
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Depressing behaviors and mechanism of an eco
DOI: 10.1016/j.molliq.2020.114898 Corpus ID: 229445199; Depressing behaviors and mechanism of an eco-friendly depressant on flotation separation of cassiterite and fluorite @article{Lv2021DepressingBA, title={Depressing behaviors and mechanism of an eco-friendly depressant on flotation separation of cassiterite and fluorite}, author={Liang Lv …
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Selective adsorption mechanism of SHMP onto fine fluorite …
The agglomeration of bastnaesite and fine fluorite severely reduces the recovery of bastnaesite, and a method to address this issue is urgently needed. Using measurement techniques such as micro-flotation, contact angle, zeta potential, in situ attenuated total reflectance-Fourier transform infrared (In situ ATR-FTIR) spectroscopy, …
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The role of gellan gum in the selective flotation separation …
Semantic Scholar extracted view of "The role of gellan gum in the selective flotation separation of fluorite from calcite: An experimental and molecular dynamics simulation study" by Long Wang et al. ... The mechanism of sodium silicate depressing fluorite in scheelite heating flotation. Shitong Xu Haiwei Huang Baiqing Wang Sili Ren. …
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1-Hydroxyethylidene-1,1-diphosphonic acid used as pH …
DOI: 10.1016/j.ces.2019.115369 Corpus ID: 213265441; 1-Hydroxyethylidene-1,1-diphosphonic acid used as pH-dependent switch to depress and activate fluorite flotation I: Depressing behavior and mechanism
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