The micro-flotation tests results show that compared with dodecylamine (DDA), the separation effect of PAE on fayalite and magnetite was significantly improved. When pH was 6.5 and PAE dosage was 20 mg/L, the selective separation of fayalite and magnetite can be achieved by reverse flotation without depressant.
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1. Introduction. Froth flotation is one of the main mineral processing approaches for the separation and purification of valuable minerals from ores (Nagaraj and Farinato, 2016).With the increasing demand for magnetite in the steel industries and the depletion of its reserves, low-grade iron ores with complex mineral properties are …
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The mechanisms of quartz activation and anionic reverse flotation have been investigated by a number of authors by means of adsorption isotherm, zeta-potential and contact angle measurements, FTIR ...
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The effect of magnetite as a magnetic seed on the flotation separation of fine hematite and quartz was studied by reverse micro-flotation and sedimentation. The results demonstrate that fine magnetite could selectively report to the pulp product with hematite particles, forming aggregates that avoided attachment to quartz particle surfaces.
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The reverse flotation of magnetite ore was improved using a pulse magnetic field. ... The high amine flotation recovery of iron was considerably impaired in the …
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The routine method of reducing the content of impurities in magnetite concentrate involves flotation [3], particularly, reverse cationic flotation using amines as a collector for the silicates [4 ...
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Reverse flotation studies on magnetite samples have revealed that the use of starch as a depressant of Fe-oxides has a hydrophilic effect on the surface of Fe-bearing silicates and significantly ...
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Gouvêa Junior, J. T. et al. Biodegradable ether amines for reverse cationic flotation separation of ultrafine quartz from magnetite. Sci. Rep. 13, 20550 (2023).
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Magnetite is an essential iron-bearing mineral. The primary method of magnetite ore beneficiation involves successive steps of crushing, grinding, and magnetic separation. Reverse cationic flotation is used at the final stage to remove silicate and aluminosilicate impurities from the magnetite concentrate and reduce silica content to …
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Semantic Scholar extracted view of "Improving reverse flotation of magnetite ore using pulse magnetic field" by Yinfei Liao et al. Skip to search form Skip to main content Skip to account menu ... Inhibiting the amine flotation of magnetite through aggregation with uniform low magnetic fields and no chemical depressants.
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The reverse flotation tests were focused on the separation of iron mineral from nickel mineral using amine complex, ARMAC-C, a commercially available amine thioacetate as collector. Influences of pulp pH, dosages of collector amine complex and frother, and also solid percent of pulp on the reverse flotation of calcine laterite ore were ...
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[Show full abstract] hematite and magnetite – and mainly quartz as gangue mineral, was submitted to reverse flotation using different types of amines as collectors and starches as depressant ...
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Dodecylamine is one of the most commonly used amine collectors for the reverse flotation of magnesite ore. Through a combination of experimental research …
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In this paper, a Gemini surfactant, ethane-1,2-bis(dimethyl-dodecyl-ammonium bromide) (EBAB), was introduced as a collector for reverse cationic flotation separation of quartz from magnetite, and its adsorption mechanisms on the two minerals and air/water interface were also investigated by FTIR spectra, zeta potential, density …
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A considerable amount of ultrafine magnetite as the iron source will end up in the tailing dams since the magnetic separation process markedly drops as the particle size. Cationic reverse flotation could be one of the main alternatives for recovering ultrafine magnetite. As a systematic approach, this study explored the flotation …
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[Show full abstract] hematite and magnetite – and mainly quartz as gangue mineral, was submitted to reverse flotation using different types of amines as collectors and starches as depressant ...
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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, …
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Dodecylamine (DDA) can only be used with acidification in the reverse flotation of iron ore. To solve this problem, this paper proposed a novel water-in-oil microemulsion with DDA prepared using ...
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To evaluation the coal beneficiation using reverse flotation and the quaternary amines were found to be convincing ash collectors and frothers. Alonso et al. ... Figure 9.10 presents a typical flow sheet for processing a magnetite ore using a combination of drum LIMS and reverse flotation. The ore is composed of magnetite and gangue minerals ...
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With the depleting reserves of high-grade iron ore in the world, froth flotation has become increasingly important to process intermediate- and low-grade iron ore in an attempt to meet the rapidly growing demand on the international market. In over half a century's practice in the iron ore industry, froth flotation has been established as an …
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Cationic reverse flotation could be one of the main alternatives for recovering ultrafine magnetite. As a systematic approach, this study explored the …
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Flotation is the most effective solution, both technologically and economically, when upgrading iron concentrates. Research regarding iron ore flotation began in 1931, demonstrating that reverse ...
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Reverse flotation technology is one of the most efficient ways to improve the quality and reduce impurity of iron concentrate. Mineral processors dealing with hematite face a challenge that the flotation results of reverse flotation of hematite are poor in presence of siderite using fatty acid as collector, starch as depressant of iron …
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Iron ore is typically represented in the form of hematite and magnetite in nature, and its main gangue minerals are silicate minerals characterized by quartz [1], [2]. ... Reverse flotation of iron ore is normally applied in practice. Quartz is floated while iron oxide is depressed using a depressant. ... Effect of amine and starch dosages on ...
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This concept was theoretically substantiated in [13]. The method, termed "combined microflotation", proved its effectiveness in quartz flotation [14,15], in the reverse cationic flotation of real magnetite concentrate at the Ferrexpo concentrator (Horishni Plavni, Ukraine) [16], and fine-grained sulfide minerals [17,18].
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Mixed mineral flotation tests were carried out to assess the performance of the two ether amines on a model ore composed of magnetite (67%) plus quartz (33%), …
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Biodegradable ether amines for reverse cationic flotation separation of ultrafine quartz from magnetite
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A simple, green and efficient separation process magnetization flotation has been paid more and more attention by mineral processing workers. Based on the …
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Abstract: Reverse flotation studies on magnetite samples have revealed that the use of starch as a depressant of Fe-oxides has a hydrophilic effect on the surface of Fe-bearing silicates and significantly decreases Fe in the silica-rich stream when used in combination with an amine (Lilaflot D817M). In this study, the effect of reverse ...
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