fluorite flotation tanino

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 ...

However, oleic acid exhibits poor selectivity and limited solubility at low temperatures. A novel fluorite flotation collector, N,9,10-trihydroxyoctadecanamide (THODA), is developed through the modification of the polar functional group of oleic acid, carboxyl, to an N-hydroxy amide group. Additionally, two hydroxy groups are introduced …

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 …

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 ...

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, …

In this study, curdlan was used as an efficient and eco-friendly calcite depressant for flotation of fluorite/calcite. Firstly, the structure and molecular weight of curdlan were characterized. Floatation test results showed that the flotation difference between fluorite and calcite was expanded by curdlan, thus enabling the flotation …

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 …

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 …

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 …

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 ...

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 …

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 …

Fig. 6 shows the effects of the XG concentration on the bastnaesite and fluorite flotation. Because the pH value of the pulp inevitably changed after reagents were added, maintaining the natural pH value of the pulp after adding the XG and then adjusting the pH value after adding the OHA ensured that it worked under appropriate pH …

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 …

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 …

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.

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 …

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 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 ...

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 ...

Corpas-Martinez et al. 21 modified Hallimond tubes for flotation of fluorite and determined the effectiveness of each collector, both in mechanical and pneumatic cell flotation. In this study, a self-developed Hallimond flotation tube was used for single …

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.

The flotation of fluorite mineral from ores by using acidized water glass as depressant has been studied for substitution of the commonly used depressant. It was found that the acidized water glass could achieve higher selectivity of fluorite minerals against gangue minerals in the fluorite flotation. The experimental results showed that YF ...

In this study, fluorite flotation tests were performed by using a mixture of tannin and sodium humate as a depressant of calcite.

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 ...

The next stage, i.e., the flotation of the mixed concentrates, has two options: a) regular flotation, where the fluorite is floated using fatty acid as the collector, while barite is depressed by dextrin, tannin or malysite; b) reverse flotation, where hydroxy …

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 …

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.

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 …

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 ...

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 …

The authors provide insight into the problem of selective flotation of fluorite from carbonate-fluorite ores. It is found that oxyhydrate collectors used in combination with sodium fluoride provide rather high level of selectivity in fluoride flotation from poor high-carbonate ores and make it possible to eliminate high-temperature pulp treatment with …

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.

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 ...

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.

The above results present that TE could be used as a selective depressant to depress calcite flotation while allowing fluorite flotation when using collector fatty acid. Download : Download high-res image (140KB) Download : Download full-size image; Fig. 3. The flotation behaviors of fluorite and calcite as a function of TE dosage.

The removal of fine quartz in fluorite concentrate is the main problem in fluorite flotation. In this study, the flotation tests on fluorite, quartz and a weight equivalent mixture (all less than 10 µm) using water glass (with different modulus) as depressants and sodium oleate as collector were conducted. The mechanism of fine quartz entering ...

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.

The flotation recovery of fluorite and calcite with 3 × 10 −4 mol/L OBHA or 4 × 10 −4 mol/L OHA as a function of slurry pH is shown in Fig. 5. According to Fig. 5, when OBHA and OHA were used as the collectors, the recovery of fluorite gradually increased with increasing pulp pH, and the maximum recovery was obtained in an alkaline ...

DOI: 10.1016/S0301-7516(96)00027-0 Corpus ID: 97025309; The significance of collector colloid adsorption phenomena in the fluorite/oleate flotation system as revealed by FTIR/IRS and solution chemistry analysis