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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 2 O and Fe 2 (SO 4) 3 (FF) as depressant for possible flotation separation of calcite/fluorite was systematically investigated, with sodium oleate (NaOL) as collector. Besides large …
The pulp was conditioned for 1 min with an impeller rotation speed at 2000 rpm. Flotation was performed using the collector 3418 A and MIBC as frother. The separation was performed for 6 min at room temperature . Flotation products were reviewed by ToF-SIMS for mineral surface chemistry . ToF-SIMS Surface Chemistry
As an important strategic non-metallic mineral resource, fluorite has been widely used in various industrial fields, such as metallurgy, optics and semiconductor manufacturing, as well as fluorine-related chemical engineering. Since the major gangue minerals of fluorite ore are silicate and carbonate ones, flotation is the main …
Seasonal fluctuations in water, gas, and froth phases. Interactions between equipment, water, and ore in different seasons. Flotation reagents and their competition under seasonal constraints ... In Chinese fluorite flotation plants, it is common to heat up the pulp to 40°C to improve the flotation performance of oleic acid through the ...
The best results are obtained using a combination of quebracho and white dextrin as depressants, reaching 74% of fluorite grade for modified column flotation and 70.5% for cell flotation.
In this study, OBHA was used as collector for the flotation separation of fluorite and calcite. Under a natural slurry pH environment, the recovery of fluorite reached 80 % while calcite recovery was less than 5 % with 3 × 10 −4 mol/L OBHA. The flotation separation of fluorite from calcite can be achieved without the addition of depressants.
This investigation aims to demonstrate the effects of hydrophobic tails on the affinity and relevant flotation response of sulfonate-based collectors for fluorite. For this purpose, a series of alkyl sulfonates with different hydrophobic tails, namely sodium decanesulfonate (C10), sodium dodecylsulfate (C12), sodium hexadecanesulfonate (C16), and sodium …
2.2. Microflotation experiments. Micro-flotation experiments on the single minerals and an artificial mixed ore were carried out using an RK/FGC5-35 (Wuhan Lok Milling Equipment Manufacturing Co. LTD, Wuhan, China) flotation machine, with a stirring speed of 1600 rpm and an air flow rate of 15 cm 3 /min.. In each test, 2 g of a single …
2.1. Pure Scheelite Flotation Performance. To investigate the effects of NaOl concentration on the flotation behavior of scheelite ground by CB and CIB in parallel, pure scheelite flotation experiments were conducted as a function of NaOl concentration, and the results are shown in Figure Figure1 1 a. It can be seen that when the NaOl …
Froth flotation is a physicochemical process that is used to separate fine mineral particles from aqueous suspensions by selective attachment of some types of …
Fluorite (calcium fluoride—CaF2), also known as fluorspar, is an industrial mineral used in metallurgy, hydrofluoric acid production, and ceramics manufacturing. Based on the results from a previous study, a low-grade fluorspar by-product (20.0% CaF2) originating from the exploitation of a rare earth carbonatite deposit can be improved to …
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.
Request PDF | Separation of Rare Earth and Fluorite Phases from Bayan Obo Ore at Low Temperature by Super-Gravity | The iron-slag separation of gaseous reduced Bayan Obo ore was conducted at a low ...
The combined application of STPP and EDTMPS further enhanced the selective inhibitory of fluorite and calcite. The results of micro-flotation tests confirmed that scheelite can be efficiently separated from fluorite and calcite at a pulp pH of 9.5, CP (mixed by STPP and EDTMPS at a 1:1 M ratio) of 3 × 10-5 mol/L, and NaOL of 1.5 × 10 …
Oleic acid plays a crucial role as the primary collector in fluorite flotation. N-hydroxy-9,10-epoxy group-octadecanamide (N-OH-9,10-O-ODA) is synthesized by modifying the structure of oleic acid.This modification involves converting the carboxyl group, the polar functional group of oleic acid, into an N-hydroxy amide group and …
Column flotation cells were found to be amenable to the recovery of high-grade CaF 2 from the Fish Creek deposit in Nevada (Mc Key et al., 1987). The improvement in grade and recovery of fluorspar by column flotation was significant compared to several stages of conventional flotation. An acid-grade fluorite product of99%
The XRD patterns of magnetic separation concentrate show that the main mineral phases in concentrate are magnetite (Fe 3 O 4) and fluorite (CaF 2), which can be removed by grinding and reverse flotation fluorite to obtain a high-grade iron concentrate. The REO grade of magnetic separation tailings is 11.98 %, and its recovery rate is 97.96 …
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 molybdenum and fluorite were obtained in different phases with the flotation of fluorite ore containing molybdenum obtained from Karaamağaradere-Keban-Elazığ district in Turkey. It has been ...
The molybdenum and fluorite were obtained in different phases with the flotation of fluorite ore containing molybdenum obtained from Karaamagaradere-Keban-Elazig district in Turkey. It has been found that the original ore contains 1.08 % Mo, 0.05 %Cu, 1.20 % Pb, 1.12 % Zn and 12.0 % F. It was determined that molybdenum and fluorite could not be ...
The flotation behavior and surface chemistry by which the XG interacted with the bastnaesite and fluorite were investigated via analyses of micro-flotation tests, adsorption density measurements ...
During the crushing and grinding stages, calcite and fluorite minerals expose similar calcium sites on their surface. ... First, the impact of PLP obtained at different temperatures on the flotation of fluorite and calcite was studied, as illustrated in Fig. 4. In the NaOL system, the PLP produced at temperatures of 800 °C (800 ℃ PLP ...
Flotation results showed that, in the presence of sodium oleate (NaOL) and SPS, the flotation recovery difference between fluorite and celestite reached 76.26% and the grade of fluorite ...
Abstract The material constitution and structure of mineral particles in fluorite ore mill waste at Yaroslavskaya Mining Company are estimated. The set of factors having influence on the efficiency of sample preparation for flotation is determined. Alongide with the complex mineralogy and structure of primary ore, dressability of mining waste is …
Seasonal fluctuations in water, gas, and froth phases. Interactions between equipment, water, and ore in different seasons. Flotation reagents and their competition under …
phases in concentrate are magnetite (Fe 3O 4) and fluorite (CaF 2), which can be removed by grinding and reverse flotation fluorite to obtain a high-grade iron concentrate. The REO grade of magnetic separation tailings is 11.98 %, and its recovery rate is 97.96 %. Consequently, rare earth can be effectively extracted
Innovations and combinations of various additives comprise a significant share of the advanced investigations in fluorite flotation [22], [23], [24]. In some …
Through the flotation process of primary roughing, primary sweeping and four-stage selection of fluorite ore, a qualified fluorite concentrate with CaF 2 grade of …
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 …
Abstract The article presents the case-study of flotation of fluorite ore from Kamarposht mine, Iran. The flotation tests allowed optimization of consumption of …
The molybdenum and fluorite were obtained in different phases with the flotation of fluorite ore containing molybdenum obtained from Karaamağaradere-Keban-Elazığ district in Turkey. It has been found that the original ore contains 1.08 % Mo, 0.05 %Cu, 1.20 % Pb, 1.12 % Zn and 12.0 % F.
Fluorite (CaF 2) is by far the most important fluorine-bearing mineral phase in the Earth's crust.It is mostly used for manufacturing …
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 …
Froth flotation has been regarded as one of the most effective physicochemical techniques for the separation and utilization of fluorite ores (Zhou et al., 2013; Gao et al., 2015) Fatty acids are the most commonly used anionic collectors for the flotation of the mineral fluorite, and thus, have been widely studied for fluorite flotation.