1,2,3, Qiwu Zhang 1,*, Hongchao Li 2,3 and Chao Wang

In this review, analyses of the fundamental reasons for the difficulties of flotation separation of fluorite from calcite are performed, from the similar surface …

Flotation chemistry of scheelite and its practice: A …

The crystal structure of scheelite belongs to the tetragonal system, with a space group of I4 1 /a and cell parameters of a = b = 0.5243 nm, c = 1.1376 nm, α = β = γ = 90°, and Z = 4 (Gao et al., 2016b).As shown in Fig. 1 (a), the complex anion in the crystal is a W–O 4 tetrahedron, formed by the combination of W 6+ and four O 2-and Ca 2+ ions, …

Flotation of fluorite from ores by using acidized water glass …

Flotation tests were carried out using a Denver laboratory flotation cell. Tests were conducted at a solid content of 25%. The chemical reagents were added to the cell and condition for 10 min before flotation.The chemical scheme where AWG was used as depressant was termed as the new scheme and that where soda ash and sodium …

Flotation studies of fluorite and barite with sodium …

Two grams of particles was placed in a 40-mL Plexiglas cell, which was then filled with a certain amount of deionized water. ... the presence of SHMP obviously depressed fluorite rather than barite and SHMP exhibited good selective inhibition to fluorite. Flotation results of artificially mixed minerals indicated that the reagent scheme …

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 …

Selective Flotation of Calcite from Fluorite: A Novel Reagent …

In addition, the flotation results of the tailings from Jiangxi containing fluorite and calcite, indicated that the grade and recovery of fluorite increased from 87.18% and 40.99% for 0 days to 93 ...

What are the Differences in Flotation of 7 Types …

Flotation Cell Quartz-type Fluorite Quartz-type fluorite is based on fluorite and quartz as the main minerals, and the content of fluorite can reach 80% to 90%, containing a small amount of ...

Difficulties and Recent Achievements in Flotation Separation …

In this review, analyses of the fundamental reasons for the difficulties of flotation separation of fluorite from calcite are performed, from the similar surface …

The Role of Water Glass in the Flotation Separation of Fine Fluorite …

Fluorite is the principal mineral of fluorine and usually coexists with quartz in deposits. 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 …

Interaction mechanism of 2-hydroxy-3-naphthyl

The flotation experiment process is presented as follows. 2.0 g of single bastnaesite or fluorite particles and approximately 35 mL deionized water were first added into the flotation cell to prepare the flotation pulp. Then, the 2-OH-3-NHA (or 1-OH-2-NHA) collector and the frother were added in turn to the flotation pulp.

Investigation of the Flotation Separation of …

The recovery of scheelite from calcium-bearing carbonate ores by flotation is challenging due to its low separation efficiency. This study investigated the effect of pentasodium …

The exploration of tannin extract as a green depressant in …

For each flotation experiment, 2.0 g of mineral particles and 40 mL of ultrapure water were added to a flotation cell, ... the effect of pH on the fluorite flotation was performed under different NaOl concentrations, and the optimum concentration of NaOl achieved is shown in Fig. 2. As can be seen from it, with the addition of 38 mg/L NaOl, …

Flotation separation of fluorite from calcite using …

The mineral samples of fluorite and calcite were ground to −2 μm. 1.0 g of the mineral sample was added to 40 mL flotation cell, and the pH was adjusted to about 8.5 like in the flotation test. Then, the depressant and the collector were added and the slurry was reacted for 20 min.

(PDF) Froth flotation of fluorite: A review

Froth flotation of fluorite: A review. February 2021. Advances in Colloid and Interface Science 290:102382. DOI: 10.1016/j.cis.2021.102382. License. CC BY 4.0. Authors: Zhiyong Gao. …

Combing Seeding Crystallization with Flotation for Recovery …

The flotation of the precipitates after seeding crystallization precipitant can recover 83.14% of CaF 2 with a grade of 64.42%, and the products can be used to replace parts of metallurgical-grade fluorite. As a result, the fluorine in the wastewater changed into useful products.

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.

Utilization of gellan gum as a novel eco-friendly depressant …

1. Introduction. Fluorite is the main mineral source of fluorine in the industry (Liu et al., 2022).It is extensively utilized in the fields of metallurgy, glass, chemical industry, ceramics and medicine, etc (Gao et al., 2021, Zhu et al., 2021).Many countries have listed fluorite as an important strategic resource due to its crucial role in relevant areas and …

Flotation separation of fluorite and calcite using anhydrous …

The micro-flotation experiments demonstrated that glucose had a significant depression effect on the flotation of calcite, whereas it had a minor effect on the flotation of fluorite. Hence, it can be used as a potential depressant for the flotation separation of fluorite and calcite. Download : Download high-res image (166KB)

Comparison Between Performance of Fluorite …

Flotation of fluorite in the column (pneumatic cell) has shown better results than in the mechanical cell for all depressants studied. When the feed has a content of 25.98% in particles smaller than 36 μm, …

A practical approach to plant-scale flotation optimization

Most sites make use of manonometers to measure air entering a flotation cell. These instruments are generally unreliable and at best give only a relative indication of the amount of air entering a cell. The only way to reliably know the amount of air entering a flotation cell is to physically measure it with some kind of probe.

On the impact of grinding conditions in the flotation of …

These were dry-, wet-, and wet conditioned-ground before flotation in a laboratory mechanical cell. Results were evaluated with bulk- and particle-specific methodologies. The selectivity of the process is higher after dry grinding for the fluorite and apatite ores and irrelevant for the scheelite ore.

Froth flotation of fluorite: A review

Flotation results using AK-2 showed that a significant improvement in fluorite flotation was achieved, compared to that when using the single oleic acid collector. In addition, the combination of anion and cation collectors, such as the mixed collector of …

The unit cell structure of fluorite [10].

Fluorite was the only fluorine mineral that could form industrial deposits, and flotation was the most important separation method in the process of low-grade fluorite ore (Gao et al., 2021 ...

The Effect of Oleic Acid Emulsification using SPE …

An effective way to improve the flotation separation of fluorite and dolomite lies in the development of a collector system with strong collection capacity and high selectivity. The most commonly used …

Frothers in flotation: A review of performance and function …

Another group of frothers showing collecting activity are sulfates having a long alkyl chain such as sodium dodecyl sulfate and sodium petroleum sulfonate. They find their application in the flotation of fluorite or barite and zinc, respectively (Chen et al., 2018, Harvey et al., 2005, Hoseinian et al., 2018). Long-alkyl chain fatty acids and ...

Fundamentals of froth flotation | ChemTexts

Froth flotation is a physicochemical process that is used to separate fine mineral particles from aqueous suspensions by selective attachment of some types of …

Froth flotation of fluorite: A review

This article begins with introducing the deposits and unique physical and chemical properties of fluorite from the perspective of the crystal structure. It is followed by a …

XCF/KYF Flotation Cell

XCF/KYF Flotation Cell/Machine Structure XCF/KYF flotation machine is composed of a tank, large isolation plate impeller with top and bottom blades, seat stator radial blade, split disc cover, split center tube, connecting tube with air-bleed hole, bearing body, hollow main shaft, and the air adjustable valve.. XCF/KYF Flotation Cell/Machine Working Principle …

Study on synergistic inhibition and mechanism of flotation

Flotation is the most efficient method to recover this type of fluorite. Fluorite and calcite contain Ca 2+. During flotation, the physical and chemical properties of the …

Minerals | Free Full-Text | Selective Separation of Fluorite …

Fluorite and scheelite, which are strategic calcium-bearing minerals, have similar active sites (Ca2+); as a result, the efficient separation of the two minerals is still one of the world's most difficult problems in the field of flotation. In this work, N-decanoylsarcosine sodium (SDAA), a non-toxic and low-cost amino acid surfactant, was …