Flotation of quartz using ionic liquid collectors with different
In continuation of the work related to the ILs as flotation collectors, the present paper explores the application of ionic liquids with functional groups such as imidazolium, pyridinium and organic group attached to the quaternary nitrogen atom in the flotation of quartz.Materials. Pure quartz (> 99% SiO 2) and magnetite (> 96% Fe 3 O 4) samples (Fig. 1) were obtained from VWR, Sweden.The samples were ground using a laboratory-scale ball mill to produce flotation feedBiodegradable ether amines for reverse cationic flotation
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武汉理工大学资源与环境工程学院欢迎您
梅光军，男，69年9月生，湖南常德人，武汉理工大学资源与环境工程学院教授、博导。. 国家自然科学基金通讯评审专家，国家科技奖励评审专家，教育部、福建省、重庆市科技评审专家。. 2000年毕业于中南大学并获得矿物加工工程博士学位，2001～2003年在日本秋In general, the flotation of quartz has two common methods: cationic flotation using fatty amines, quaternary ammonium salts, ether amines, etc., and flotation with metal ions activation and using anionic collectors, such as sodium oleate, sodium alkyl sulfonate, and sodium alkyl sulfate with metal ions as activators, such as Ca 2+, Cu 2+, Activation mechanisms of quartz flotation with calcium ions
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Flotation and adsorption of quartz with the new collector
It has been innovatively used as a collector in the flotation of quartz. In this present study, the flotation behaviors of quartz with BHLD were investigated by micro-flotation of quartz. It was found that the recovery of the quartz reaches 98.9%.The results of pure quartz flotation using ILs as collectors and DDA are shown in Fig. 1. It is observed that when the DMH concentration rises to 4*10 −5 mol*L −1, 97.15% of the quartz has been floated. For the other three ILs, the quartz recovery rate rises to more than 95% at the concentration of 8*10 −5 mol*L −1.Flotation of quartz using imidazole ionic liquid collectors
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Insight into anionic and cationic flotation discrepancy of quartz
The flow chart of quartz flotation is shown in Fig. 1.A 40 mL XFG tank flotation machine was used to conduct the flotation experiments [19]. 2.00 g of quartz particles and 30 mL of DI water were poured into the flotation tank and stirred to adjust the pulp for 2 min, after which pH regulator, activator (only present in anionic flotation), and Flotation results of pure quartz using ionic liquids are found to be better compared to the conventional collectors such as dodecylamine (DDA) or cetyltrimethylammonium bromide (CTAB). It isFlotation of quartz using ionic liquid collectors with different
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Flotation of Iron Oxides and Quartz—A Review
Abstract. Froth flotation of iron oxides and quartz is reviewed over the broad range of particle sizes. The review, which embraces laboratory-, pilot plant- and industrial operations, encompasses (i) surface chemistry of iron oxides and quartz flotation (ii) relevant collectors and their adsorption mechanism and (iii) activation/depression in selective flotation, in Tricaprylmethyl ammonium salicylate (TOMAS), an ionic liquid has been employed as a collector for the flotation of quartz. The sign reversal of zeta potential of quartz from negative to positive values and increase in contact angle from 8 0 to 70 0 by the addition of TOMAS have substantiated the interaction of TOMAS with the quartz surface. Use of the ionic liquid-tricaprylmethyl ammonium
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Synergistic Effect of DBP with CTAB on Flotation
Collophane is difficult to upgrade by reverse flotation of quartz with amine collector alone due to its low grade, complex structure, fine dissemination grain size, etc. This investigation was conducted to The most favourable pH for the flotation of quartz in the size ranges under investigation was pH 9.0 for both types of amine used, ether monoamine and ether diamine. Ether monoamine was more efficient than ether diamine in the flotation of fine quartz. At higher pH levels, ether diamine yielded better results than ether monoamine in the case The effect of amine type, pH, and size range in the flotation of quartz
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Study on the influence of particle size on the flotation
The influences of particle size on the flotation separation of kaolinite and quartz was explored by flotation tests of full-size and various sizes, zeta potential analysis. The flotation separation effects of kaolinite and quartz mixed minerals under different conditions were analyzed by calculating the characteristic parameters such as K, R ∞, Section snippets Materials. Pure kaolin (< 10 μm) used in single flotation tests was obtained from a kaolin mine of Suzhou, Jiangsu province, PR China.Pure quartz, having a SiO 2 grade higher than 99.8%, was purchased from Suqian (Jiangsu province, PR China). In order to obtain a fine size fraction of quartz the sample was passed through a Removal of fine quartz from coal-series kaolin by flotation
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Collecting Agent–Mineral Interactions in the Reverse Flotation
Froth flotation has been widely used in upgrading iron ores. Iron ore flotation can be performed in two technical routes: direct flotation of iron oxides and reverse flotation of gangue minerals with depression of iron oxides. Nowadays, reverse flotation is the most commonly used route in iron ore flotation. This review is focused on the reverse Experimental studies concerning the dissolved air flotation (DAF) of fine (d p < 100 μm) quartz particles, using two different flotation cells (setups), are presented. Pure and well characterised quartz samples were treated with a commercial amine as collector prior to flotation and bubbles were characterised by the LTM-BSizer technique.Effect of carbonate alkalinity on flotation behavior of quartz
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Flocculation and flotation characteristics of fine hematite
The flotation tests found that the flotation recovery of fine hematite increased observably to 94.51% from 68.69% by adding 4 mg/L PAAS before NaOL at pulp pH 7.3; in the separation of mixedEfficient recovery of fine mineral particles is challenging for minerals flotation due to a small particle mass and high specific surface area. This work innovatively applied a multifunctional surfactant 2-dodecanoylamino-pentanedioic acid (DPA) for achieving flocculation and recovery of fine rhodochrosite.Flocculation of quartz by a dual polymer system
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Electroflotation of quartz fines ScienceDirect
Fine bubbles generated by electroflotation enhance flotation response of fine minerals such as chalcopyrite, quartz, sphalerite, kaolinite, silica, and cassiterite [7–12]. The size of bubbles produced by electroflotation is affected by several factors, such as the type of electrode material, curvature of the electrode surface, current densityThis study investigates the hydrophobic aggregation of fine quartz particles through shear flocculation induced by dodecylamine in aqueous solutions. The effect of stirring speed, collector concentration, flocculation time, and pH were investigated. The results showed that the impact of stirring speed on particle aggregation in the absence of Minerals Free Full-Text Quartz Fine Particle Processing
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Collecting Agent–Mineral Interactions in the
Froth flotation has been widely used in upgrading iron ores. Iron ore flotation can be performed in two technical routes: direct flotation of iron oxides and reverse flotation of gangue minerals with Introduction. Small particle aggregation and flotation are of importance in the minerals industry. During the last few decades, various approaches to fine particle aggregation have been reported Laskowski and Ralston, 1992, Elimelech et al., 1995, Subrahmanyam and Forssberg, 1990, Rubio and Hoberg, 1993, Gardner and Theis, 1996.Agglomerate flotation of fine oxide particles ScienceDirect
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Intensification of fine apatite flotation with microbubble generation
The flotation of fine apatite particles is performed in a lab-scale column with a novel membrane distributor for microbubble generation. A large number of microbubbles are continuously produced by the large-area membrane distributor. Flotation separation of quartz from apatite and surface forces in bubble-particle interactions: Role Collophane is difficult to upgrade by reverse flotation of quartz with amine collector alone due to its low grade, complex structure, fine dissemination grain size, etc. This investigation was conducted to explore the synergistic effect of dibutyl phthalate (DBP) as a surfactant with cetyltrimethyl ammonium bromide (CTAB) as the collector on the Synergistic Effect of DBP with CTAB on Flotation Separation of Quartz
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Investigations on reverse cationic flotation of iron ore by
The flotation recovery of quartz increased gradually with increasing pH but decreased at pH > 10 when DAC was used. However, for EBAB, the recovery of quartz increased with increasing pH values and maintained >90% even when the pH values were over 12. At natural pH 6.56, the flotation recovery of quartz was 93.03% and. Conclusionsminerals are different from that of quartz, so they are often treated separately in the flotation process. To date, several review papers [1,9,10,14,18,24,25] either discuss the collector–mineralCollecting Agent–Mineral Interactions in the Reverse
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Synthesis of N,N-Bis(2-hydroxypropyl)laurylamine and its flotation
Dodecylamine (DDA) is a commonly used cationic collector in the reverse flotation of apatite and quartz but has poor selectivity. To improve the selectivity of DDA, two 2-hydroxy-3-chloropropyl groups are introduced to the structure of DDA to create a novel cationic collector N,N-bis(2-hydroxy-3-chloropropyl) dodecylamine (BHCPDA).Flotation The molecular structure of cationic surfactants is closely related to their flotation performance. In this paper, three cationic surfactants with different head group structures were selected as collectors of kaolinite, and the substituent effects were studied by the DFT method. The DFT calculation results showed that increasing the number of Substituent Effects in Kaolinite Flotation Using Dodecylamine
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Quartz Ore Beneficiation by Reverse Flotation for Silicon
In this work the reverse flotation as beneficiation process for high-purity silica valorization from Draissa quartz deposits (Algeria) is studied as a potential raw material for photovoltaic silicon production and starting charge for crystal growth material for a large wide of applications such laser and scintillation. The samples are investigated by
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