Understanding the sequential flotation separation of fluorite…
The flotation separation of fluorite, barite and calcite with OEBA collector was performed. Based on the findings and discussion, we could draw the following conclusions. OEBA realized the efficient flotation separation of fluorite and barite from calcite at pH ∼ 9.0, and that of barite from fluorite at pH ∼ 11.0.
1-Hydroxyethylidene-1,1-diphosphonic acid used as pH
Single mineral flotation tests were conducted in an XFG flotation machine at a spindle speed of 1700 rpm (Wang et al., 2016).The XFG machine configuration has been reported in our previous publication (Gao et al., 2016a).The mineral suspension was prepared by adding 2.0 g of single mineral or mixed binary mineral samples (1 g fluorite …
The exploration of tannin extract as a green …
Microflotation results showed that the high recoveries of both fluorite and calcite flotation could be obtained when the NaOl was over 38 mg/L; the addition of > 50 mg/L TE could completely depress the floatability of calcite while it slightly affected the …
The anionic flotation of fluorite from barite using gelatinized starch
The flotation performance of barite and fluorite at pH 7.5 as a function of GS dosage was presented in Fig.3. It shown that the flotation recovery of barite decreased significantly from 90% to less than 5% with the increasing GS dosage. However, the flotation recovery of fluorite was almost not affected in the presence of GS.
Selective adsorption mechanism of SHMP onto fine fluorite …
In each flotation test, a total mass of 2 g of mixed minerals (at a mass ratio of 1:1 of bastnaesite and fluorite) was dispersed in 35 mL distilled water (Mlipore deionized, resistivity of 18.25 MΩ cm). Fig. 1 shows the flotation circuits of artificially mixed minerals. The pH of the suspension was modified by the addition of HCl or NaOH at 8.5.
(PDF) Reverse Flotation Separation of Fluorite …
A series of our single mineral flotation tests prov ed that reverse flotation separation of fluorite. from calcite can be achieved by using a novel re agent scheme of 3 × 10 − mol/L of HEDP and ...
Comparison of Sodium Oleate and Sodium Petroleum …
Fluorite, a kind of critical non-metallic minerals, is the primary source of industrial fluorine. Sodium oleate (SO) is commonly used as the collector of fluorite ores. However, because of its some features (such as the low solubility, high solidifying point, and poor dispersion of SO) at low temperatures, it profoundly inhibits its collecting ability as …
Fluorite Tailings Flotation Process
To address the complex composition of fluorite tailings, flotation technology is commonly used for processing. The main steps of flotation processing include: Ore Crushing and Grinding: Firstly ...
Investigation on the flotation separation of fluorite from …
Sulfate minerals have gradually become the main gangue minerals of fluorite deposits, and the flotation separation of fluorite and sulfate minerals is difficult with commonly used depressants. In this paper, the high selectivity of a novel depressant sodium polynaphthalene formaldehyde sulfonate (SPS) for the flotation separation …
Selective flotation separation of fluorite and calcite by …
The fluorite and calcite samples used in the tests were natural mineral crystals collected from Hunan, China. The mineral crystals were burst, picked, crushed, ground, and screened through standard sieves of 0.074 mm and 0.037 mm. Samples with a particle size of 0.037–0.074 mm were used for the flotation tests and analyses.
Improving fluorite flotation under low temperature and …
Fig. 7. E®ect of oleic acid dosage on °otation grade and. recoveries of °uorite at 22 C and pH ¼9. Improving Fluorite Flotation under Low Temperature and Neutral pH Conditions. December 5 ...
Rheological investigations on the hetero-coagulation …
Combined with the rheological investigations on the flotation pulp in 3.1 The hetero-coagulation between the fine fluorite and quartz in aqueous suspension, 3.2 The hetero-coagulation between the fine fluorite and quartz under flotation conditions, it can be concluded that it is the hetero-coagulation that exhibits the negative effect on the ...
Investigation of two-stage depressing by using
The technology (dextrin + tannin) produced an excellent result, simplifying the flow during fluorite flotation, which can led to a reduction in power consumption as well as reduction in production costs for each ton of 105% sulfuric acid of $3.24 (t/t) for the entire production chain lifecycle. The new technology was an efficient, economic and ...
Minerals | Free Full-Text | Flotation Behavior of Different Colored
Using sodium oleate (NaOL) as a collector, the flotation characteristics of natural colorless fluorite (CF), green fluorite (GF), and purple fluorite (PF) were investigated through micro-flotation tests, collector adsorption measurements, and surface tension measurement. The micro-flotation results indicated that CF had a much better …
Froth flotation of fluorite: A review
It has been well appreciated that the froth flotation is of the most importance. However, to the best of the authors' knowledge, it lacks a thorough and critical review on the recent developments in fluorite flotation. This article begins with introducing the deposits and unique physical and chemical properties of fluorite from the perspective ...
an effective modifier in fluorite flotation
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 …
INFLUENCIA DE LA CONCENTRACIÓN DE DEPRESORES Y …
taninos en la depresión de carbona tos presentes junto con fl uorita, destacando el quebracho como un tanino . ... two new collectors for fluorite flotation DP-OMC-1033 (DP-I) and DP-OMC-1234 (DP ...
Fluorite flotation separation from bastnaesite via an eco …
Fig. 2 indicates the fluorite & bastnaesite recoveries within separate mineral flotation at pH 4–12 (the amount of SO is fixed at 80 mg/L). When the pH value falls between 6.71 and 12.0, the fluorite recovery rate is greater than 95 %. In terms of the bastnaesite recovery rate first increases and then drops as the pH value increases.
Effect of dissolved fluorite and barite species on the flotation …
The flotation recovery of bastnaesite was significantly affected by dissolved fluorite and barite species. After treatment with fluorite and barite supernatants, the flotation recovery sharply decreased from 62.16% to 8.11% and 24.09%, respectively, at pH 3 and from 90.00% to 9.68% and 39.61%, respectively, at pH 11.
[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, …
Fluorite | Crystals, Uses, Properties | Britannica
fluorite, common halide mineral, calcium fluoride (CaF 2 ), which is the principal fluorine mineral. It is usually quite pure, but as much as 20 percent yttrium or cerium may replace calcium. Fluorite occurs most commonly as a glassy, many-hued vein mineral and is often associated with lead and silver ores; it also occurs in cavities, in ...
Application of Raman spectroscopy to the flotation process of fluorite
1. Introduction. Flotation is a treatment process of ores and with about two billion tonnes of floated crude ore per year it is one of the most important processes for the enrichment of valuable minerals (Yianatos, 2003).Fluorite (CaF 2) is separated by means of flotation from gangue particles such as barium sulphate (BaSO 4) and silica (SiO 2).It is …
Mechanism of collector adsorption in fluorite flotation
As a common derive of fatty acid, sodium oleate (NaOl) is used in the flotation separation of quartz-fluorite and calcite-fluorite, given its unique advantages like low cost, readily available ...
Effect of an Environment-Friendly Depressant on the Flotation …
To overcome the difficulty of separating bastnaesite from fluorite through the flotation technique, the present study examined the suitability of sodium alginate (SA) as a depressant in the flotation process. The effect of SA on the flotation separation of bastnaesite and fluorite was evaluated using micro-flotation tests, zeta potential …
Activation mechanisms of sodium silicate-inhibited fluorite …
In this study, the activation mechanisms of fluorite inhibited using Na 2 SiO 3 by adjusting the solution pH to neutral and slightly alkaline conditions were investigated. The solution chemistry of sodium silicate and microflotation tests showed that SiO(OH) 3 − in the Na 2 SiO 3 solution strongly inhibited fluorite flotation, while H 4 SiO 4 and SiO …
Intensifying fine-grained fluorite flotation process with a …
For fluorite ores, fatty acid and sodium silicate are frequently used as a collector and depressant, respectively [19], [20], [21]. Innovations and combinations of various additives comprise a significant share of the advanced investigations in fluorite flotation [22], [23], [24]. In some situations, effective flotation could be realized with ...
Pb-water glass as a depressant in the flotation separation of fluorite …
Fig. 2 shows the effect of the amount of water glass and pH on the separation of fluorite from calcite when using NaOL (80 mg/L) as a collector and water glass as a depressant. Fig. 2 a shows that in the pH range of 7–11, the flotation recoveries of calcite and fluorite both initially increased with increasing solution pH and then …
Coagulación de finos en la flotación de la fluorita …
Para la obtención de concentrados comerciales, más de 95 % de CaF2, el mineral se procesa en. plantas de flotación donde se usa ácido oleico como colector de la fluorita. Para que el ácido oleico actúe selectiva-. mente es común el uso de reactivos …
Coagulation of fines in fluorite froth flotation
Fluorite, a valuable mineral in the metallurgical industry, can be found together with silicates, carbonates and oxides in ore deposits. Commercial concentrates with more than 95 % of CaF2 are obtained processing the mineral in flotation plants and using oleic acid as fluorite collector. Depressor reagents such as sodium silicate, tannin …
Adsorption and depression mechanism of an eco-friendly …
The fluorite (CaF 2) lump and calcite (CaCO 3) lump used in this study from a fluorite mine in Hunan province and the Ye's mineral specimen group in Guangdong province, China, respectively.After manual crushing, agate grinding and wet screening, the –150 + 37 µm size fractions were used for flotation experiments, FTIR spectroscopy and …