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The flotation experiments demonstrate the superior selectivity of N–OH-9-ODA in the separation of bastnaesite and one of its associated gangue minerals, fluorite, when compared to OA. The zeta potential experiments reveal a significantly greater adsorption capacity of N–OH-9-ODA on bastnaesite surface compared to fluorite, resulting in its ...
The flotation separation of magnesite from calcite under Pb-BHA collector system is difficult due to the same action site of CO 3 2– anion. Surface transformation of fluorite particles present great selectivity for different calcium containing minerals, which is due to the selective adsorption of slowly-released fluoride ions (F-
Fluorite ore beneficiation is a complex process involving various stages of extracting the fluorspar mineral from its original form. The process typically involves crushing, grinding and flotation methods to separate valuable fluorspar from other impurities. An interesting aspect of fluorspar ore beneficiation is the use of advanced …
DOI: 10.1016/j.jcis.2017.10.043 Corpus ID: 12972318; Selective adsorption of tannic acid on calcite and implications for separation of fluorite minerals. @article{Zhang2018SelectiveAO, title={Selective adsorption of tannic acid on calcite and implications for separation of fluorite minerals.}, author={Chenhu Zhang and Sun Wei …
The purified mineral samples of celestite, fluorite and calcite were supplied by Tongliang of Chongqing city (China). To study the chemical characteristics and mineral compositions of celestite, fluorite and calcite, the chemical composition and X-ray diffractometry of these three minerals were shown in Fig. 1 and Table 1, …
The combination of Fe 2+ /Fe 3+ sulfate was used as selective depressant for the flotation separation of fluorite and calcite.. Ferrous and ferric species were in-situ generated on calcite surface to hinder the adsorption of NaOL. • Fluorite concentrate with CaF 2 grade of 80.29 % and recovery of 90.79 % was obtained using 1:1 mixed minerals.
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 diethylenetriaminepentaacetate (PD) on the surface properties of scheelite and fluorite. For this purpose, we performed micro-flotation tests and carried out zeta …
Mineral Processing. Mineralogy. Geoscience. Flotation. Article PDF Available. Reverse Flotation Separation of Fluorite from Calcite: A Novel Reagent Scheme. July 2018. Minerals 8 (8):313....
1. Introduction. Fluorite (CaF 2) is an important nonrenewable mineral that is primarily used for the production of hydrofluoric acid and as a flux agent in steel making.As current fluorite resources exhibit increasingly complex mineralogical compositions, separation of fluorite is difficult.
The flotation separation of calcite with other calcium-containing minerals has been extensively investigated. In the flotation separation of scheelite, fluorite, and apatite from calcite, depression of calcite is the most commonly used method, and the most commonly used depressants are tannin and water glass ( Ai et al., 2017, Chen et al ...
Fluorite is an important strategic mineral. In general, fluorite ores will contain a certain amount of calcite gangue mineral. Thus, they need to be separated from each other. For an economic …
However, when the gangue mineral content in fluorite is high, this selectivity will be weakened [18,19,20]. Therefore, other auxiliary reagents need to be introduced to improve the selectivity of acidified sodium silicate further. ... In this study, the pH range is 7–11, including the optimal pH for the separation of fluorite and calcite [15 ...
Separation of scheelite from calcite and fluorite. Commonly used thick slurry high-temperature method. First, concentrate the pulp to a concentration of 60~70%, then add water glass, heat the pulp to above 80°C, stir for 30-60 minutes, then dilute with water, and flotate scheelite at room temperature. The product in the tank is Fluorite and ...
It is known that the flotation separation of fluorite/calcite is extremely difficult because of their similar surface features. In this research, the combination of FeSO 4 ·7H …
However, low-quality fluorite ores usually contain a large amount of calcite in nature [7], then causing the difficult separation result of fluorite from calcite due to the similar surface properties when using fatty acid (such as NaOl) as the common collector [8], [9]. Therefore, a highly selective depressant needs to be added to the flotation ...
Request PDF | On Oct 3, 2022, M. B. E. Andargoli and others published Separation of Fluorite Mineral from Its Ore by Flotation Method and Optimal Use of Chemical Reagents | Find, read and cite all ...
Scheelite is often associated with calcium- and magnesium-bearing minerals such as fluorite and calcite [].In the flotation process of scheelite, phosphate agents are often added to inhibit the associated gangue mineral, and sodium oleate is used as a collector to preferentially achieve scheelite flotation [2,3,4]; while the flotation …
The efficient separation of complex associated fluorite and calcium-containing gangue minerals is difficult to achieve using a traditional fatty acid collector due to the poor selectivity and adaptability of such collector. This study utilised a novel anionic/nonionic collector, namely, a mixture of sodium oleate (NaOL) and oleamide, to …
The separation of barite from fluorite (and calcite) can be realized by adding >3 × 10 −5 mol/L sodium fluosilicate to depress the barite and to float fluorite. This developed flotation separation process exhibits a …
The pure minerals of fluorite and calcite were obtained from Hubei Province and Hunan Province, China. In order to obtain the mineral samples for micro-flotation experiments, zeta potential, FTIR and XPS analysis. ... Selective adsorption of tannic acid on calcite and implications for separation of fluorite minerals. Colloid Interface Sci., …
This separation is based on differences in the wettability of minerals, as the hydrophobic minerals tend to adhere to the bubbles while the hydrophilic ones remain in the suspension [13], [14], [15]. As the most common mineral separation processing method, froth flotation is considered crucial for obtaining high-grade fluorite.
However, for fluorite-calcite type mineral deposits, the separation of fluorite from calcite with fatty acid collectors is difficult because they share the same reactive metal atoms and similar chemical and physical properties (Hanumantha Rao and Forssberg, 1991, Marinakis and Shergold, 1985, Pugh and Stenius, 1985).
Therefore, the equilibrium concentration of collectors and tannins is critical for the selective separation of fluorite and gangue minerals and has been repeatedly authenticated [140, 141]. Based ...
Introduction. Fluorite (CaF 2 ), which is a major resource of fluorine, has been considered to be an important strategic mineral in recent years. Fluorite mineral are often associated with calcite (CaCO 3 ), and …
Fluorite and scheelite, which are strategic calcium-bearing minerals, have similar active sites (Ca 2+ ); 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.
Fluorite (CaF2), as an important strategic mineral source, is usually separated from calcite by the common froth flotation method, but this separation is still not selective enough. The development of a selective collector and/or depressant is the key to achieving high selective separation. 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP …
Fluorite, barite and calcite are important industry minerals. However, they often co-exist, presenting difficulty in selectively separating them due to their similar surface properties. In this study, valonea extract and sodium fluosilicate were used as depressants to selectively separate them by flotation, with sodium oleate as the collector. The single …
1. Introduction. Fluorite is one of the most important fluorine-containing minerals in Earth's crust, and it is composed of calcium and fluorine [1], [2].As an important non-metallic strategic mineral resource, fluorite plays an irreplaceable role in traditional industries such as metallurgy, chemical engineering, and building materials, and in …
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 and …
Scheelite and fluorite are important industrial minerals used as raw materials to produce spaceflight items, catalysts, ceramics, optical glass, and fine chemicals [].However, Flotation separation of scheelite from fluorite is difficult because of the existence of the same cation in the minerals and similar physicochemical characteristics …
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