Innovative methodology for recovering titanium and …
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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Evaluating separation efficiencies of Multotec's new …
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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US3935094A
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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Chemical variability in chrome spinel grains from …
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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Selective sulfidising roasting for the removal of chrome …
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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A study on the recovery of fine chromite from …
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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(PDF) Recovery of Chromite from Processing Plant …
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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An innovative process for recovery of ilmenite using mineral …
Gravity separation, flotation, high gradient magnetic separation (HGMS) and their combinations are commonly applied to separating fine-grained ilmenite. HGMS is used for …
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Removal of chrome spinels from Murray Basin ilmenites by …
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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Refining of ilmenite by removal of excess chromite
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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Analysis of Sulfidation Routes for Processing Weathered Ilmenite …
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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Selective sulfidising roasting for the removal of chrome …
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.
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Innovative methodology for recovering titanium and …
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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Kinetics of chromite vs. ilmenite magnetization during …
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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A discussion of magnetic separation techniques for …
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 …
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Spiral (Concentrators)
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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Centrifugal high gradient magnetic separation of fine ilmenite
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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An innovative process for recovery of ilmenite using mineral …
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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Innovative methodology for recovering titanium and …
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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Reflections on ilmenite roasting and magnetic separation
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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Removal of chrome spinels from Murray Basin ilmenites by …
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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Kinetics of chromite vs. ilmenite magnetization during …
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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BENEFICIATION OF MAGNETITE RICH CHROMITE ORE WITH MAGNETIC SEPARATION
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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(PDF) Recovery of Chromite from Processing Plant Tailing …
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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Exploratory Study of Separation of Sulphidised …
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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BENEFICIATION OF MAGNETITE RICH CHROMITE …
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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Exploratory Study of Separation of Sulphidised …
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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An innovative process for recovery of ilmenite using mineral …
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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A discussion of magnetic separation techniques for …
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 …
WhatsApp: +86 18221755073
Innovative methodology for recovering titanium and …
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