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The collector is the most important reagent used in the iron ore flotation process. The function of the collector reagent is to promote affinity between mineral particles and air bubbles by formation of a water-repellent coating on the surface of the mineral particle. Most collectors in current use are heteropolar; i.e., they contain both a polar
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as magnesium, iron and aluminum oxides. For more than 40 years, we have designed customized flotation collectors and boosters to enhance phosphate recovery for …
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Alumina reduction in Rajhara iron ore slimes essentially involves separation of hematite from gibbsite in relatively coarser fraction and from kaolinite in the finer fraction. Selective dispersion flocculation studies on synthetic mixtures clearly indicated that while it was possible to achieve almost perfect separation of hematite from kaolinite using starch and …
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Minerals. 2021. This work describes the concentration of iron ore slimes on a pilot scale by using a 500-mm diameter flotation column and a novel collector, which …
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Current Situation and Future Development of the Collector for Reverse Flotation of Iron Ore. Citation: ZHANG Chao-hong, DAI Hui-xin. Current Situation and Future Development of the Collector for Reverse Flotation of Iron Ore [J]. Multipurpose Utilization of Mineral Resources, 2012, (2): 3-6. doi: 10.3969/j.issn.1000-6532.2012.02.001.
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References (19) Figures (6) Abstract and Figures. The role of reagents utilised in iron ores flotation is reviewed. Desliming and flotation stages should be performed at pH levels as low as ...
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Objective of this study is to investigate the synergistic effect of dodecylamine kerosene as a collector in the reverse cationic flotation of iron ore slime. The hematite slime used in the ...
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Five main classes of collectors are used in iron ore flotation: (Fig. 2) On the basis of selective removal of iron oxide and gangue, direct flotation (in which iron minerals are …
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Fatty acids are widely used as a collector in the reverse anionic flotation of iron ores. The most popular anionic collectors used in iron ore flotation practice are oleic acid and its soaps [16,26]. The oleate in aqueous solution forms different species and which species dominate is dependent on pH.
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Surprisingly, the ether diamine 2 (Flotigam 2835-2L) performed best as a collector for the Brazilian iron ore although it failed to perform in the flotation of the South African iron ore. A hematite concentrate with an iron grade of 65% …
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The plant practice of the reverse cationic flotation of iron ores started in Brazil in 1977. Starch is used as depressant for iron minerals and amine acts as quartz collector and also as frother. Amine is an expensive reagent and its consumption tends to be higher with the increasing contents of quartz in the ores being processed.
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DOI: 10.1016/J.SEPPUR.2012.10.015 Corpus ID: 94301866; Utilization of novel ester-containing quaternary ammonium surfactant as cationic collector for iron ore flotation @article{Weng2013UtilizationON, title={Utilization of novel ester-containing quaternary ammonium surfactant as cationic collector for iron ore flotation}, …
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Abstract. The present work has evaluated the hematite direct flotation of an itabiritic ore of low iron content (26.0%) from the iron quadrangle, Minas Gerais, Brazil. The collecting reagents used in the investigation were the oleic acid, two commercial reagents and an industrial vegetable oil. The work considered the investigation of sodium ...
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For iron ore flotation, different applications, such as anionic-anionic collectors, anionic-cationic collectors, and ionic-nonionic surfactants became common in reverse anionic and cationic flotation to increase solubility in order to reduce collector consumption and improve metallurgical results (Rao and Forssberg, 1997, Filippov et al., …
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Five main classes of collectors used in iron ore flotation. 3.1.2. Collectors in Direct Iron Ore Flotation. Hematite, goethite and magnetite are the iron oxide minerals, which are separated from the gangue mineral by direct flotation. Iron ore flotation started with direct flotation of iron oxides using selected anionic collectors such as ...
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This work describes the concentration of iron ore slimes on a pilot scale by using a 500-mm diameter flotation column and a novel collector, which renders the use of a depressant unnecessary. The pilot column was operated in series with the industrial plant Vargem Grande 2 (Iron Quadrangle, Brazil) receiving, as feed, part of the underflow from …
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To explore the flotation feasibility and flotation law of iron minerals from amphibole-type iron oxide ore with full-size minerals, a systematic study on the flotation behaviors of single minerals hematite, quartz, and amphibole was carried out with the anionic reverse flotation system. The effects of collectors, depressants, activators, and …
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The conventional amines used in the reverse flotation of iron ore (e.g., etheramine) are cationic collectors, meaning that when in water they adopt a positive …
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This paper aims to propose a new amidoamine collector N-[3-(Dimethylamino)propyl]dodecanamide for iron ore reverse flotation with a potential of …
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In the flotation of iron ores, the difference in flotation rates between iron oxides and gangue minerals needs to be enlarged, which can be achieved by changing …
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The flotation results with oleic acid and dodecylamine show better recovery of iron values in the hematite–quartz mixture as well as in the naturally occurring high silica ore compared to the hematite–clay mixture and the high alumina ore respectively. Similarly results on a variety of iron ores show that high silica content as quartz in ...
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ABSTRACT Objective of this study is to investigate the synergistic effect of dodecylamine kerosene as a collector in the reverse cationic flotation of iron ore slime. The hematite slime used in the investigation contains 56.32% Fe, 5.3% SiO2, and 5.79% Al2O3. Iron recovery could be enhanced to 64.58% by the mixed dodecylamine …
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Interest-ingly, the phosphorous is reduced to 0.010% at 50 g/t total mixed collectors dosage which is better or coincides to 0.012% phosphorous reduction when 50 g/t Atrac is used alone. It was also the case at 20 g/t of mixed collector or 20 g/t of Atrac alone where phosphorous in magnetite concen-trate is 0.028%.
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The FTIR date shows that collectors contains lively carboxyl functional groups and The GC-MS date reveals that those carboxyl functional groups exist in single unsaturated fatty acid and three unsaturated fatty acid. The collectors can be applied to iron ore reverse flotation, apatite flotation, and fluorite flotation.
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In the flotation of iron ores, the di erence in flotation rates between iron oxides and gangue minerals needs to be enlarged, which can be achieved by changing …
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The main routes of iron ore flotation were reviewed. Reverse cationic flotation is the most used flotation method of iron ore beneficiation. Ether amines and starches are usually used as collectors and depressant, respectively. Selective depressants for Fe-bearing silicates deserve further investigations.
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In this process, oleic acid was a collector for P-bearing minerals and starch was a depressant for reducing the rising velocity of iron minerals. Therefore, a qualified concentrate with a high Fe grade and low P content could obtained at the final. ... Effect of amine and starch dosages on the reverse cationic flotation of an iron ore. Miner ...
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The flotation of iron ore was first investigated in America ... grade of 36.5% to 65.4% while maintaining an 82.5% iron recovery. The flotation collector consists of approximately
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Fatty acids (a distilled tall oil containing approximately 91% oleic and linoleic acids, 6% rosin acid and 3% unsaponifiables) are used as the collector of iron oxides, the dosage of which is usually in the range of 0.45-0.67 kg/t [4, 5]. Conditioning was reported to be of critical importance for the direct flotation process.
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Overview of the beneficiation process used by the Yuanjiacun iron ore concentrator, utilizing anionic reverse flotation (based on Chen, Ge and Yu 2005; Mao, Huang and Zhao 2005). Figures ...
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