تعتبر شركة Olux شركة رائدة ومتميزة على المستوى الدولي في مجال البحث والتطوير وتصنيع وبيع محطات التكسير والغربلة واسعة النطاق ومعدات الطحن الصناعية ومصانع الاستفادة.
This chromite reports with the ilmenite product (upon magnetic separation) resulting in an acceptably high Cr2O3 content of the final product. There was therefore no reason to further investigate the bimodality of these curves. Gouws and Van Dyk1 assumed that the bimodality in the Cr2O3 curve was due to analytical error Kinetics of chromite vs ...
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In order to recover the ultra fine chromite particles from the Karagedik Concentrator tailings, a new process, including Wet High Intensity Magnetic Separation and column flotation, was...
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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 complex due to variable physical properties [6], [7], resulting in considerable amounts of chromium ...
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Spiral chute, also known as a spiral separator, is commonly used in iron ore, ilmenite, chromite, pyrite, zircon, rutile, monazite, tungsten ore, chrome, tin ore, niobium ore, and other non-ferrous metals, rare metals and non …
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High gradient magnetic separation (HGMS) has been used in a variety of technical processes, such as for biochemical separation and pollutants purification (García et al., 2015, Hayashi et al., 2010, Hoffmann et al., 2002, Menzel et al., 2012).But, this method has gained the most applications in the field of mineral processing (Watson and Beharrell, 2006), and it is now …
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Ilmenite concentrates from the Murray Basin deposits of southeastern Australia contain discrete grains of chrome spinels as a major impurity that must be removed for the ilmenite to become …
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In this paper, processes to remove the sulphidised chrome spinels from the bulk ilmenite concentrates were investigated using flotation and magnetic separation techniques.
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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 separation of ilmenite ...
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Gravity separation, flotation, high gradient magnetic separation (HGMS) and their combinations are commonly applied to separating fine-grained ilmenite. HGMS is used for industrial-scale pre-separation of low-grade fine-grained ilmenite, which can effectively remove non-magnetic minerals such as kaolin and feldspar.
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Separation between the ilmenite and the chromite could be achieved by oxidizing roasting followed by magnetic separation. Temperature and oxide extent played important …
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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 and Bulatovic also studied froth flotation for …
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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. Chromite occurs generally with olivine and serpentine. Chromite can be also found with magnetite with a less frequency.
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But for the raw ilmenite concentrate separated from the Promenade deposit, chromium represented a particular problem for processing. Previous mineralogical investigations have shown that chromium mainly occurs as free chromite particles and in principle, they can be separated along with other separate minerals such as zircon, rutile and monazite from the …
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In this paper, processes to remove the sulphidised chrome spinels from the bulk ilmenite concentrates were investigated using flotation and magnetic separation techniques.
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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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In the present study, a chromite concentrate was reprocessed by gravity (spiral concentrator) and magnetic separation to enhance the chromium‐to‐iron ratio.
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IMPC 2020: XXX International Mineral Processing Congress, Cape Town, South Africa, 18-22 October 2020 1 Evaluating separation efficiencies of Multotec's new SC25 spiral on coarse chromite H.S. Baloyia, J.J. Rusta* aMultotec Process Equipment (Pty) Ltd, 28 Forge Road, Spartan, Kempton Park, South Africa *Corresponding author: jeanteller@multotec
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Gravity separation, flotation, high gradient magnetic separation (HGMS) and their combinations are commonly applied to separating fine-grained ilmenite. HGMS is used for …
WhatsApp: +86 18221755073
Oxidative roasting is applied on an industrial scale to beneficiate ilmenite concentrates from South African East Coast heavy minerals deposits - the aim is to increase the magnetic...
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Ilmenite concentrates from the Murray Basin deposits of southeastern Australia contain discrete grains of chrome spinels as a major impurity that must be removed for the ilmenite to become a satisfactory feedstock for the sulphate route to titania pigment production.
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This chromite reports with the ilmenite product (upon magnetic separation) resulting in an acceptably high Cr2O3 content of the final product. There was therefore no reason to further …
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Effect of sodium silicate on the magnetic separation of ilmenite from titanaugite by magnetite selective coating. Powder Technol., 344 (2019), pp. 233-241. ... Kinetics of chromite vs. ilmenite magnetization during oxidative roasting of ilmenite concentrates. J. S. Afr. Inst. Min. Metall., 103 (2003), pp. 501-507. View in Scopus Google Scholar
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The presence of chromite in significant amount in ilmenite downgrades the market value of the ilmenite. A substantial amount of the chromite may be removed, firstly by a reduction step, secondly by a leaching, aeration or oxidation roasting step and finally by a physical separation step. An optional preoxidation may precede the reduction step and an optional physical …
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As examples, the ilmenite tailings case study presented in this paper shows how advances in technology have allowed for increased recovery of -45 μm ilmenite by utilizing a multi-stage SLon® wet magnetic separator circuit equating to an additional 30 000 tons of ilmenite …
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Extensive application is the treatment of heavy mineral beach sand consisting of monazite, ilmenite, rutile, zircon, garnet, and upgrade chromite concentrate. Two or more spirals are constructed around one central column to increase the amount of material that can be processed by a single integrated unit.
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They proposed that the addition of sulphur to chrome-contaminated ilmenite concentrates under Becher-type reduction roast conditions could be a potential route for …
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Processing of weathered ilmenite however, is complex, especially when chrome-bearing impurities are present since minor chromium downgrades the SR market value as it imparts color to the final TiO 2 pigment, Chrome-bearing spinels are a problem in weathered ilmenites from the Murray Basin, Australia as their physical and chemical properties ...
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In order to recover the ultra fine chromite particles from the Karagedik Concentrator tailings, a new process, including Wet High Intensity Magnetic Separation and column flotation, was...
WhatsApp: +86 18221755073
They proposed that the addition of sulphur to chrome-contaminated ilmenite concentrates under Becher-type reduction roast conditions could be a potential route for chrome spinel separation from weathered ilmenite concentrates.
WhatsApp: +86 18221755073
Oxidative roasting is applied on an industrial scale to beneficiate ilmenite concentrates from South African East Coast heavy minerals deposits - the aim is to increase the magnetic...
WhatsApp: +86 18221755073
As examples, the ilmenite tailings case study presented in this paper shows how advances in technology have allowed for increased recovery of -45 μm ilmenite by utilizing a multi-stage SLon® wet magnetic separator circuit equating to an …
WhatsApp: +86 18221755073
In the present study, a chromite concentrate was reprocessed by gravity (spiral concentrator) and magnetic separation to enhance the chromium‐to‐iron ratio.
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The asymmetrical pulsation curve with a faster upward stroke and slower downward stroke was found to achieve a TiO 2 concentrate grade of 23.94 %, a recovery of 66.78 %, and a separation efficiency of 50.46 % for the separation of ilmenite. When the concentrate grade is slightly higher, this new curve shows an increase of 5.68 % in recovery and ...
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Separation between the ilmenite and the chromite could be achieved by oxidizing roasting followed by magnetic separation. Temperature and oxide extent played important parts in improving magnetic property of the ilmenite.
WhatsApp: +86 18221755073