Beneficiation of Konya-Beyşehir Chromite for Producing Concentrates Suitable for Industry

Öztürk, Fatma Deniz; Temel, Halime Abakay

doi:10.1007/s11837-016-1983-1

Cited by 7 publications

(8 citation statements)

References 5 publications

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“…Wilfley Shaking Table was used for gravity separation to remove gangue mineral as it is more economical and easier to exercise. 25 Further beneficiation is done by passing the particles through a Boxmag Magnetic Separator. During magnetic separation desirable chromite particles that are susceptible to magnetic field get deflected by permanent magnetic roller and collected on the inner side of the hopper.…”

Section: Methodsmentioning

confidence: 99%

“… 24 Beneficiation is required for further processing of chromite mineral, which involves comminution and concentration. 25 Chromium oxide (Cr 2 O 3 ) that is one of the constituent of chromite has been extensively studied as a coating material for thermal protection, wear resistance, and refractory applications. 26 − 29 Thin chromite coating has been produced in past with HVOF technique which shows good corrosion resistance and adequate wear resistance but coating thickness was very low (20 μm) due to temperature limitation in the HVOF technique.…”

Section: Introductionmentioning

confidence: 99%

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Development and Characterization of Natural Chromite Coating on Metal Substrate Using the Plasma Spray Process

et al. 2023

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Natural materials are gaining interest as coating feedstock because their “quality to cost” ratio is better and they are more environmentally friendly than most of the synthetic ceramics. They give sufficient protection to metal surfaces against harsh conditions such as corrosion, wear, and high temperature. In the current study, chromite mineral was beneficiated and reduced to two different sizes to be used as feedstock material for thermal spray coating. Powders were upgraded by gravity and magnetic separation, respectively, and thermally sprayed onto mild steel samples by using atmospheric plasma spray (APS) equipment. Morphology, structure, phases, elemental distribution of chromite powder, and coatings were studied using field emission scanning electron microscopy, X-ray diffraction, X-ray fluorescence spectroscopy, and energy-dispersive X-ray spectroscopy. Tribological properties of APS chromite coatings were investigated by using a ball-on-disk tribometer, and corrosion resistance properties were evaluated by carrying out potentiodynamic polarization testing in 3.5% NaCl solution. It is observed that the coating has better wear and corrosion resistance and is worn by abrasive wear that includes scratching and particles pull out. Coating efficiency, surface morphology, and microhardness of the coating developed by fine powder were better than those of coarse powder coating.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Natural Chromite Coating on Metal Substrate Using the Plasma Spray Process

et al. 2023

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“…Chromite (FeCr 2 O 4 ) is the main economic source of chromium metal and a raw material required by the metallurgical industry (about 90% of the extracted chromite ore is converted to ferrochrome by the metallurgical industry), chemicals, and refractories [5,6]. Chromite deposits are classified into three groups of high chromium with a grade of at least 46% Cr 2 O 3 , high iron with 40-46% Cr 2 O 3 , and high aluminum with less than 40% Cr 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

“…Chromite deposits are classified into three groups of high chromium with a grade of at least 46% Cr 2 O 3 , high iron with 40-46% Cr 2 O 3 , and high aluminum with less than 40% Cr 2 O 3 . Another classification method is based on Cr/Fe ratio, and the ores are divided into three groups: metallurgical grade (Cr/Fe > 2.5), chemical grade (Cr/Fe ≈ 1), and refractory grade, which contain a large amount of Al 2 O 3 ((Al 2 O 3 + Cr 2 O 3 ) > 60%) [6]. Therefore, chromite processing method depends on the type of the ore in terms of application and target industry.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Particle Size Distribution and Liberation Degree on the Separation Performance of Industrial Spirals in Low-grade Chromite Processing

Bahrami

Farajzadeh

Kazemi

2020

Mining, Metallurgy & Exploration

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Spirals, the most common equipment for the separation of heavy minerals such as chromite, are greatly affected by size distribution and the liberation degree (hence the specific gravity and size) of the feed particles. In this study, the efficiency of spirals in separation of low-grade chromite particles has been investigated by studying the distribution of grade, size distribution and liberation degree of feed, concentrate, and tailings of spiral. For this purpose, mass balance constraints were applied to the spiral-containing chromite processing circuit. Afterwards, the grade variations and size distributions have been investigated. According to the results, when the feed to the spiral has a larger size distribution, the enrichment ratio of the feed is 1.32 and, with the smaller feed size, this value has increased to 1.99. When the spiral feed has a larger size distribution and higher specific gravity, the recovery of chromite increases with increasing particle size up to 250 microns, and then with increasing particle size, recovery decreases with a relatively steep slope. Evaluation of spiral efficiency with respect to particle liberation degree has also shown that despite the high degree of liberation of spiral feed in size fractions smaller than 75 microns (88.9%), the liberation degree of spiral concentrate and tail in this faction is equal to and less than that of feed, which can indicate poor spiral performance in these size fractions.

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“…There are few published data available about processing low-grade deposits or tailings in order to beneficiate chromite. Publications relevant to the gravity separation of different chromite deposits as well as tailing fraction were studied [10,[14][15][16][17][18][19][20]. Most of these studies are limited to the flowsheet development, as well as recovery of the chromite particles.…”

Section: Introductionmentioning

confidence: 99%

Improving the Quality of Ferruginous Chromite Concentrates Via Physical Separation Methods

et al. 2019

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The low chromium‐to‐iron ratio of chromite ores is an important issue in some chromite deposits. The value of the chromite ore is indeed dictated in the market by its iron, as well as its chromium content. In the present study, a chromite concentrate was reprocessed by gravity (spiral concentrator) and magnetic separation to enhance the chromium‐to‐iron ratio. Also, detailed characterization studies including automated mineralogy were carried out to better understand the nature of the samples. Enhancing the chromium‐to‐iron ratio was achieved by using advanced spiral separators which will be discussed in this paper.

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Beneficiation of Konya-Beyşehir Chromite for Producing Concentrates Suitable for Industry

Cited by 7 publications

References 5 publications

Development and Characterization of Natural Chromite Coating on Metal Substrate Using the Plasma Spray Process

Development and Characterization of Natural Chromite Coating on Metal Substrate Using the Plasma Spray Process

The Effect of Particle Size Distribution and Liberation Degree on the Separation Performance of Industrial Spirals in Low-grade Chromite Processing

Improving the Quality of Ferruginous Chromite Concentrates Via Physical Separation Methods

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