Semantic Scholar extracted view of "Innovative methodology for recovering titanium and chromium from a raw ilmenite concentrate by magnetic separation after modifying magnetic properties." ... Comparison of the Oxidation Behaviors of High FeO Chromite and Magnetite Concentrates Relevant to the Induration of Ferrous Pellets. …
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Gravity separation is traditionally employed depending on the liberation particle size in order to obtain a saleable chromite concentrate with at least Cr2O3 content of 44% and Cr/Fe ratio of 2.20.
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The heavy mineral placer deposits of the coastal sediments in south Maharashtra stretch for 12.5 km from Pirwadi in the north to Talashil in the south. The area is a sand bar represented by a narrow submergent coastal plain lying between the Achara and Gad Rivers. The sediments in the area are mainly sands which are moderately well …
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As a result, it is expected that enriching of the chromite by magnetic separation will yield favourable results. The chromite content in the courser fraction is much lower at an average of 12.79%. This is typical tailing which will be uneconomical to enrich. Figure 3: Chromite and Silica deportation. 3.5.
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Additional magnetic separation of the non-magnetic fraction at a lower current (0.3 A) improved the recovery of sulphidised chrome spinels. ... Heyes et al. explained a flotation technique for removing chromite and ilmenite from silicates, but knowledge of ilmenite chrome spinel separation is limited. Smith and Bruckard ...
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In this study, possible separation of chromite from serpentine in fine sizes using a magnetic carrier was investigated as a function of pH, dodecylamine (DDA) dosage, and amount of magnetite. First, the zeta potentials of minerals were determined in the absence and presence of DDA, and then magnetic carrier experiments were performed in …
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The invention discloses a separation method for ore containing ilmenite and chromite. The separation method comprises ore separating, roasting and magnetic separating technologies. Specifically, the separation method comprises the steps that the ore containing the ilmenite and the chromite is separated through the reselection or weak …
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As one of the most effective physical separation techniques, high gradient magnetic separators (HGMS) have been widely used for sorting essential metal ores, such as hematite, limonite, ilmenite ...
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separation between ilmenite and chromite: The waste stream with a high chromite content should be. roasted under oxidizing conditions, in a reactor with a well-
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The separation of ilmenite from chromite in crude ilmenite . relies on differences in magne tic properties; the effect of . compositional …
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This paper reviews the literature relating to the flotation of chrome spinel and presents a considered approach to the development of a robust flotation method to separate chrome spinel from ilmenite. Contributor (s): G W Heyes, W J Bruckard, L K Smith. Return to parent product. Flotation of Chromite - A Review With Applications to Upgrading ...
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The Cr:Fe ratio (chromium-to-iron mass ratio) of chromite affects the production of chrome-based ferroalloys. Although the literature contains numerous reports related to the magnetic separation of different minerals, limited work concerning the application of magnetic separation to fine chromite from the Sukinda region of India to …
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Thermodynamic and experimental studies indicated that selective sulfidation of chrome-bearing spinel can be achieved under controlled pO 2 and pS 2 processing conditions thereby making them amenable to separation. Keywords. Weathered ilmenite; Chrome spinel; Chromite; Sulfidation; Thermodynamics
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In total, podiform chromite deposits contain only 4% of the world's Cr reserves. 2.2 Fe-Ti Oxide Deposits. The most important ore minerals are ilmenite, FeTiO 3, and titanian magnetite, both of which can contain economically relevant amounts of vanadium. Titanian magnetite consists of magnetite as a host crystal that contains …
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The separation of heavy minerals was carried out in three size fractions, medium sand (500-250 μm), fine sand (250-125 μm) and very fine sand (125-62.5 μm) using bromoform (specific gravity 2.88). The separated heavy fraction was used for further separation of magnetite, ilmenite and chromite by hand magnet and
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Introduction. Ilmenite is used for titania (TiO 2) pigment production through either the sulphate or chloride route processes (Ranganathan et al., 2012).The chromium (Cr) level in the ilmenite concentrates used for the pigment feedstock must be low (i.e. less than 0.1% Cr) since even a minor amounts of Cr impurities can impart colour to the white …
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In other words, it is very possible that the raw ilmenite concentrate containing Cr will finally become one kind of the most hazardous solid waste. Therefore, the key factor impacting on the commercial exploitation of this heavy sand deposit is how to achieve a clean separation of the ilmenite from the chromite in the initial beneficiation stage.
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However, in practice, the separation is difficult because the physical properties of chromite grains, such as specific gravity, conductivity and magnetic susceptibility, are similar to the ilmenite grains and sometimes, the situation is more …
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Definitions. This invention pertains to purification of ilmenite; more specifically, this invention pertains to purification of ilmenite concentrates whereby the chromite fraction thereof is removed with simple processing steps to the levels found to be acceptable for ilmenite in its various applications. Still further, this invention pertains to a two step magnetic …
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As one of the most effective physical separation techniques, high gradient magnetic separators (HGMS) have been widely used for sorting essential metal ores, such as hematite, limonite, ilmenite, chromite, and rare earth, from non-magnetic gangue minerals (Zhou et al., 2021, Hu et al., 2020, Ross et al., 2022, Gao and Chen, 2010, …
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The ilmenite concentrate recovered from red sediment sample by physical beneficiation process, which included scrubbing, desliming, gravity concentration, magnetic and electrostatic separation ...
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magnetic separation is high-gradient magnetic separators [14]. 2.2 Dry Low-Intensity Magnetic Separators (DLIMS) 31 ... Chromite (Fe,Mg)(Cr,Al)2O4 ... Ilmenite FeTiO3 Paramagnetic Monazite (Ce,La,Y,Th)PO4 Paramagnetic Niccolite NiAs Paramagnetic Olivine (Mg,Fe)2[SiO4] Paramagnetic Siderite FeCO3 Paramagnetic Uraninite UO2 …
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The invention discloses a separation method for ore containing ilmenite and chromite. The separation method comprises ore separating, roasting and magnetic separating technologies. Specifically, the separation method comprises the steps that the ore containing the ilmenite and the chromite is separated through the reselection or weak …
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The process is in two parts: Part 1 shows the selective sulphidation of the chrome spinel grains; Part 2: involves the physical separation of the sulphidised chrome spinels from the reduced ilmenite.
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concentrate by gravity separation methods and low intensity magnetic separation. An ilmenite concentrate is produced from the heavy minerals concentrate by wet high intensity magnetic separation7. Nell and Den Hoed6 found that the bulk of the chromium in the ilmenite concentrate is present in spinel of Kinetics of chromite vs. ilmenite
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110 rowsThe separated heavy fraction was used for further separation of magnetite, ilmenite and chromite by hand magnet and …
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The processes of strong magnetic roughing and electric separation can further improve the concentrate grade and recovery rate. At the same time, strong magnetic separation-flotation is a better method for processing fine-grained ilmenite. 03 Chromite Mineral Processing Technology. Because chromite is a lean ore, it must be beneficiated.
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The ilmenite-hematite (FeTiO 3-Fe 2 O 3) solid solution (Ilm ss) commonly occurs in layered intrusions (Harrison et al. 2000).Ilm ss tends to experience subsolidus re-equilibration and phase transformation during different T-f O 2 cooling paths, forming hematite and/or magnetite exsolution and magnetite-rutile intergrowths in ilmenite …
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chromite where gravity concentration is followed by dry magnetic separation. Case studies Several case studies are presented that describe the testing and flowsheet development work that enabled proper magnetic separation technology selection and flowsheet configuration. Case Study 1: Dry magnetic separation of ilmenite before electrostatic ...
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PDF | On Oct 6, 2003, J.D. Steenkamp and others published Kinetics of chromite vs. ilmenite magnetization during oxidative roasting of ilmenite concentrates | Find, read and cite all the research ...
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