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The Improvement Effect of Dispersant in Fluorite Flotation: Determination by the Analysis of XRD and FESEM-EDX. Y. J. Li F. Sun Y. Zhou L. Zeng. Materials Science. 2015. Different dispersants were added in the dispersion process to improve the efficiency of fluorite flotation. The types and dosage of dispersant on the improvement of fluorite ...
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The flotation problem is largely one of impurity removal. The sulphide minerals are generally floated first, and then the fluorite is floated from the silica, calcite, and other impurities. Flowsheet of an operating acid-grade fluorspar plant treating 300 tons of ore per day. Rougher flotation concentrates are ground to —200 mesh prior to ...
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stocks of fluorite (graded) was 98,597 tonnes in 2018-19 as against 97,359 tonnes in 2017-18 (Tables 2 to 5). The average daily labour employed in fluorite mines in 2018-19 …
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Flotation results indicated that ATMP exhibited strong inhibition on the fluorite flotation but did not affect that of scheelite, and a satisfactory separation of scheelite from fluorite was achieved at the reagent regime of 60 mg/L ATMP, 40 mg/L sodium oleate (NaOL) and pH 10.0. Zeta potential measurements and AFM detections …
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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 at the ...
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Abstract The article presents the case-study of flotation of fluorite ore from Kamarposht mine, Iran. The flotation tests allowed optimization of consumption of chemical reagents. The recommended process conditions enable production of flotation concentrate at fluorite content of 61.4% and fluorite recovery of 85.88%.
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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.
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The flotation recovery of fluorite increased slowly with the increase in the ultrasonic pretreatment time, and the flotation recovery of fluorite reached 21.87%, 23.49%, and 23.40% after pretreatment at 0.56, 0.50, and 0.40 W/cm 2 for 27, 33.75, and 45 min.The difference between the flotation recoveries of fluorite and calcite could reach …
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Flotation is widely used in the purification of fluorite from other gangue minerals (Song et al., 2006, Wang et al., 2014). However, gangue minerals such as calcite and barite may cause problems in the flotation of fluorite because of their similar flotation properties (Zhu et al., 2018). Therefore, physical processes (e.g., magnetic or ...
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Effect of Fluoride Ion on the Separation of Fluorite from Calcite Using Flotation with Acidified Water Glass. As a common depressant, acidified water glass (AWG) has strong inhibitory effects on fluorite and calcite. The inhibited fluorite is difficult to be recovered, thus resulting in the waste of….
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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 …
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Fluorspar, also known as fluorite (CaF 2), is commercially important in metallurgical (e.g. used as slag viscosity modifier), ceramic (e.g. used to manufacture glass), and chemical industries (e.g. production of commercial HF).In the present study, a process has been developed to produce a ceramic grade fluorspar by-product from a rare earth …
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The world's current largest production of barite is in China, followed by the U.S, and then India (Clark et al., 2004). Other nations like Kazakhstan, Mexico, ... Effect of active substance content and molecular weight of petroleum sulfonate on fluorite flotation: Molecular dynamics simulation. Miner. Eng., 174 (2021), Article 107257.
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Requirements to reduce global warming by reducing CO 2 emissions bring considerable challenges to mineral beneficiation, especially the development of froth flotation technology. The challenges are both systemic and deposit related, and go from theoretical understanding to plant practices. Challenging themes include resource …
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In this review, analyses of the fundamental reasons for the difficulties of flotation separation of fluorite from calcite are performed, from the similar surface …
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Acid grade fluorite is used as a feedstock in the manufacture of hydrofluoric acid (HF) and to produce aluminium fluoride (AlF 3). The major use of HF is for the production of a wide …
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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 ...
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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 …
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Carbonate-fluorite ore is one of the main types of fluorite ores, usually in coexistence with other gangue minerals like dolomite, calcite, and others. 5, 6 It is difficult to separate fluorite and dolomite efficiently due to their extremely similar floatability. An effective way to improve the flotation separation of fluorite and dolomite lies ...
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Fluorite (CaF 2 ), 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.
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DOI: 10.1016/0301-7516(92)90032-R Corpus ID: 96214879; On the role of the ion composition of the aqueous phase in the flotation of fluorite and calcite @article{Morozov1992OnTR, title={On the role of the ion composition of the aqueous phase in the flotation of fluorite and calcite}, author={V. V. Morozov and Henning Baldauf and …
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My initial research in India was on fine coal beneficiation using the oil-agglomeration technique and established a model for growth ... group molecules on these surfaces provided a satisfactory scientific explanation for the experimental findings of fluorite flotation at two orders less concentration of oleic acid than calcite flotation. ...
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During fluorite flotation, Quebracho and lignin sulphonate mixture (MESB) was used with collector composed of a mixture of oleic acid and phosphoric ester. Collectors used for bastnaesite flotation included tall oil fatty acid modified with three ethylene tetra amine. ... Flotation of the Indian beach sand (monazite) India has very large ...
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Flotation method would be the best ore extraction method that maximizes the recovery of ore and remove the impurities. Based on the data of this study, the Tirremi …
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In the reverse flotation of fluorapatite and dolomite, high-efficiency depressors of fluorapatite have received considerable attention. In this paper, the depression mechanism of hydroxy ethylene diphosphonic acid (HEDP) was studied for the first time as a novel fluorapatite depressant on the surface of fluorapatite. The effect of …
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As a common depressant, acidified water glass (AWG) has strong inhibitory effects on fluorite and calcite. The inhibited fluorite is difficult to be recovered, thus resulting in the waste of resources and low …
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1-hydroxydodecylidene-1,1-diphosphonic acid (HDDPA) was prepared and first applied in flotation of hemimorphite. HDDPA exhibited superior flotation performances for recovery of hemimorphite in comparison with lauric acid, and it also possessed good selectivity against quartz flotation under pH 7.0–11.0. Contact angle results revealed that …
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Flotation of flurotite is reviewed. Collectors, depressants, regulators, modifiers and frothers applied to fluorite flotation are described. Synergistic effect of collectors and depressants in fluorite flotation is elaborated.
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Semisoluble salt minerals are characterized by their ionic bonding and are distinguished from soluble salt minerals by their limited solubility in water. One group of semisoluble salt minerals being considered is the alkaline earth salt minerals, including fluorite (CaF2), calcite (CaCO3) and apatite (Ca5F (PO4)3), as well as celestite (SrSO4) …
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The flotation recovery of fluorite increased slowly with the increase in the ultrasonic pretreatment time, and the flotation recovery of fluorite reached 21.87%, 23.49%, and 23.40% after pretreatment at …
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