The flotation of diaspore, kaolinite, pyrophyllite, illite and the diaspore-kaolinite mixture were studied with a new cationic organosilicon quaternary ammonium collector entitled QAS222. The acting mechanism of the collector with the four minerals was analyzed by Zeta potential measurement and FT-IR spectrum analysis. The results indicate that the QAS222 was effective in the reverse flotation ...
Get priceEffect of coarse quartz scalping on the reverse cationic flotation of …slower and they require longer residence time in the reactor, while fine particles interfere with the … Keywords: Quartz, reverse cationic flotation, iron ore.»More detailed
Get priceA process for concentrating manganese from the tailing of a manganese-carrying mineral including removing a coarse particle size fraction from the tailing, desliming and conducting an acidic or a basic reverse cationic flotation. The manganese-carrying minerals are ...
Get priceRequest PDF | On Jan 1, 2009, L.O. Filippov and others published The use of collectors mixture of various molecular structure in the reverse cationic flotation of magnetite ore ...
Get price· Reverse cationic flotation removes quartz using ether amine as a collector, while depressing iron oxide with the use of corn starch in alkaline pulp adjusted by NaOH. In most cases, the pH ranges from 10 to 10.5. In early years, primary fatty amines such as
Get priceA process involving the use of mixed anionic and cationic collectors for muscovite mica was studied [13]. The flotation recovery could be enhanced using a mixture of dodecylamine acetate with sodium oleate. The adsorption of both the cationic and anionic A ...
Get priceto Filippov et al (2010), the use of a mixture of collectors in the reverse fl otation of magnetite ore could improve the fl otation of Fe-bearing silicates.
Get priceReagents of a large group of amines are mainly used as cationic collectors. Fatty primary alkylamines and their acetates and chlorohydrates have been used only at early stages of industrial reverse …
Get priceFlotation is the most effective solution, both technologically and economically, when upgrading iron concentrates. Research regarding iron ore flotation began in 1931, demonstrating that reverse cationic flotation is a very efficient method for beneficiating oxidised iron ores. This method can also be applied to reduce the silica content in magnetite concentrates obtained using wet low ...
Get priceCollectors are commonly divided into three types – nonionic, anionic or cationic. Non-Ionic collectors: These are simple hydrocarbon oils which are needed to increase the water-repelling nature of those minerals which have low hydrophobic strength such as coal.
Get priceA method is disclosed for separating phosphate minerals from a mineral mixture, particularly from high-dolomite containing phosphate ores. The method involves conditioning the mineral mixture by contacting in an aqueous in environment with a collector in an ...
Get priceBatch laboratory scale reverse cationic flotation was employed to concentrate low-grade Fe ore, found in fluorspar tails in the form of hematite. This study used two types of depressants (soluble starch and dextrin) and two types of amines (primary mono-amine and tertiary mono-amine).
Get price· @article{Veloso2018InvestigationOT, title={Investigation of the interaction mechanism of depressants in the reverse cationic flotation of complex iron ores}, author={C. H. Veloso and Lev Filippov and I. Filippova and S. Ouvrard and A. C. Ara{''u}jo}, journal={Minerals Engineering}, year={2018 ...
Get priceWe examined the flotation behaviour of francolite and calcite with a variety of cationic collectors. Only a few primary amines were found to be strong and selective collectors for francolite. In the present work we examined the flotation behaviour of francolite and calcite, using primary amines as collectors in test tube floatability tests and by a microelectrophoretic technique.
Get priceL.O. Filippov, I.V. Filippova, V.V. Severov. The use of collectors mixture of various molecular structure in the reverse cationic flotation of magnetite ore.. Minerals Engineering, Elsevier, 2009. hal-00414611
Get priceintroduction of cationic charges (e.g., hydrolysis of polyvinylformamide to polyvinylamine or "click" chemistry), addition of salts to screen charges, synthesis in reverse micelles or the use of anionic radical initiators have been published [12,36,41–45].
Get priceThe use of a magnetic field in flotation is commonly defined iron ores can be floated with both anionic and cationic collectors as ''''magnetic flotation or magnetoflotation" by various researchers (Houot, 1983; Uwadiale, 1992; Papini et al., 2001
Get price· use of chiral phosphate anions for phase-transfer catalysis, in which undesired background reaction is minimized through the use of poorly soluble cationic reagents.10 We hypothesized, in the case of a redox-driven deracemization, that the undesired
Get priceThe cationic reverse flotation of quartz is preferred for iron ores, due to the high selectivity achieved and the fact that the iron-bearing minerals are in greater portion than the gangue, minimizing collector consumption (Costa, 2009). Another relevant fact on reverse
Get priceThe invention relates to a reverse froth flotation process for treating a calcium carbonate ore containing silicates. The process comprises the use of two collectors selected from the group consisting of fatty tri-lower-alkyl quaternary ammonium compounds, fatty di ...
Get priceCollector, g/Mg Cationic Anionic* Fuel oil+kerosene, g/Mg 100 -- Dowfroth 1012, g/Mg 75 75* Flotation Solids, % 20 20 Time, min 10 10 Impeller speed, rpm 1200 1200 * in second stage, collectors were added into the cell in 2 steps as 1:1 w/w.
Get priceThe behaviour of cationic amine collectors used in the reverse cationic flotation of quartz from iron oxide minerals appears to change from one mineral system to the other, deviating from ...
Get priceThe use of collectors mixture in the reverse cationic flotation of magnetite ore: The role of Fe-bearing silicates
Get priceHowever, a HF-free flotation process using a mixture of the cationic and anionic collectors for the separation of feldspar from sand was described by Katayanagi [4] and the process was reported to be applied in industrial practice [2] [4]. In an aqueous medium the
Get priceDownload Citation | Reverse flotation of ultrafine magnetic concentrate by using mixed anionic/cationic collectors | Compared to reverse cationic flotation, the advantages of reverse anionic ...
Get priceAbstract Copolymerization of cationic monomer and nonionic macromonomer in water‐ether mixture solution is useful for preparing the functional polymer. Copolymer of …
Get priceThe paper describes effective reagent combinations for removal of silicates by reverse cationic flotation from magnetic concentrate in magnetite ores processing. This work is based on a hypothesis that a further development in reverse cationic flotation of iron ores implies, a more detailed consideration of the nature of the Fe-bearing gangue minerals. Thus, the choice of reagent regime has ...
Get price· Reagents of a large group of amines are mainly used as cationic collectors. Fatty primary alkylamines and their acetates and chlorohydrates have been used only at early stages of industrial reverse flotation of iron ores.
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