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 …
ABSTRACT Mineral and morphological characteristics of chromite ore strongly affect the separation efficiency while upgrading the low-grade deposits. Usually, chromite ore enrichment is carried out by using gravity separation due to high-concentration criterion between chromite and other minerals. However, chromite ore …
The feed sample to the magnetic separator was 10% wet, the speed of the drum was set at 15 rpm with a vibration feeder of 8 Hz. After separation of the magnetic material (chromite mineral) with the non-magnetic (mostly silica) for every test, it was then dried in the oven at 80°C, weighed and bagged for XRF analysis.
Magnetic separation techniques may be useful after reduction for the beneficiation of low grade chromite ore. The sample collected from the sukinda mines is characterized by XRD which shows predominant phases like maghemite, chromite, silica, magnesia and alumina.
To address this, dry magnetic separation is an alternative approach to separate these iron bearing gangue minerals from the chromite.This work investigated on the application of different dry high ...
3.4 Magnetic Separation of Anka Chromite Ore In this operation, use was made of the cross-belt separator. This technique is a continuous process carried out on a moving stream of particles passing into and through magnetic field. In this technique close control of the velocity of the passage of the particles is ensured to drastically reduce the ...
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 developed ...
The magnetic separation technique with or without reduction roasting method was used by several researchers to upgrade the low-grade chromite ores [21,22,23,24,25,26]. High-intensity magnetic separation technique was used by Tripathy et al. [ 24 ] for improvement of the Cr/Fe ratio in the off-grade chromite ore from Sukinda, …
chromite, should be separated by magnetic methods. Franz-isodynamic separator was used for that purpose. To. estimate the feasibility of the separation results in semi-. industrial scale a ...
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 developed ...
A commonly used magnetic separation equipment for chromite ore beneficiation is a drum magnetic separator. This type of equipment uses a rotating drum surrounded by a magnetic field to separate magnetic particles from non-magnetic particles. Chromite ore is fed into the drum. As the drum rotates, magnetic materials …
Chromite recovery from UG2 tailings by physical separation and flotation was studied. Desliming, magnetic separation and acidic flotation (pH2.5) achieved target grades. Results on deslimed feed at natural pH with various collectors have been promising. Further work is underway on spiral concentrates, collector addition and froth washing.
Wet high-gradient magnetic separation is usually thought to be the most promising method for improved performance. Chromite ore can be separated in a high-strength field, despite the presence of iron impurities. The choice of method depends on several factors, primarily the type of the gangue.
We also attempted to beneficiate the ultrafine chromite using wet magnetic separation by pre-treating the slurry using the carrier coagulation method [16]. High-intensity magnetic …
This study aimed to evaluate the chromite recovery from shaking table tailings of Forumad plant by a dry high-intensity magnetic separation. The average feed grade of chromium trioxide (Cr 2 O 3) was 7.62% by XRF. Also, different mineral phases were determined by XRD, identifying the presence of Chrysotile, Augite, Albite, Chlorite and Chromite ...
Flotation, selective flocculation, as well as magnetic carrier separation studies have also been carried out for different chromite ores to separate chromite from the gangue minerals [32][33][34 ...
3.1 Chrome magnetic separation process. The chrome raw ore is a flotation tail ore, which is mainly formed in the chromite, and the chromite is the target recovering mineral. The dissociation degree of ferrochromium ore is low, and it has a weak magnetic property. First of all, magnetic separation processing to separate chromite.
Magnetic separation of chromite from different types of ores. MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW 197 Downloaded by [Tata Steel] at 20:30 01 June 2016
As a result, a wet magnetic separation technology for recovery of ultra-fine chromite (Cr 2 O 3) from spirals tailings as a scavenger was investigated. The Middle Group Chromitite …
Magnetic separation of cells is a simple, rapid, specific and relatively inexpensive procedure, which enables the target cells to be isolated directly from crude samples containing a large amount of nontarget cells or cell fragments. Many ready-to-use products are available and the basic equipment for standard work is relatively inexpensive.
It can be observed that in magnetic separation both chromite and iron-rich minerals reported to the magnetic stream, whereas diamagnetic particles of silicate-bearing minerals reported to the nonmagnetic stream. So the target was made to discard siliceous/iron-bearing silicates, and the details of the mass balance of the results are …
As a result, a wet magnetic separation technology for recovery of ultra-fine chromite (Cr 2 O 3) from spirals tailings as a scavenger was investigated. The Middle Group Chromitite layer (MG) spiral tailings was characterized using XRF, XRD, SEM and screen sieves with the aim of determining the viability of using the wet high intensity magnetic ...
In this project, chromite tailings from Western Limb of the South African Bushveld Igneous Complex (BIC) was characterised with the objective of recovering fine and ultrafine chromite using wet magnetic separation process. 2. Materials and Methods. Chromite …
The fine chromite was observed to be upgraded to a Cr:Fe ratio of 2.2 with a yield of 55.7% through the use of an induced roll …
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 …
wet gravity concentration alone. In other chromite beneficiation processes, magnetic separation by RED is an essential polishing step. Figure 3 shows a typical flowsheet for upgrading chromite where gravity concentration is followed by dry magnetic separation. Case studies Several case studies are presented that describe the testing
Therefore, concentration of chromite is required. The most commonly used beneficiation methods for chromite ores are gravity separation, such as shaking table, jig, spiral, and Reichert cone ...
chromite ore using magnetic separation process O.K. Abubakre 1, R.A. Muriana 2 and P.N. Nwokike 3 Mechanical Engineering Department, Federal University of Technology, Minna
The separation of chromite ore with lowest particle size fraction was done using Mozley mineral separator followed by the magnetic separation of the sink product by magnetic separator. The results obtained revealed about 77% of the total material containing 300 μm particle size, 52% ˂ 212 μm and 17% below 75 μm.
A petrographic examination was conducted on the minus 100-mesh magnetic separation products to characterize the products and to determine if further grinding would improve liberation of the chromite. The nonmagnetic fraction of the cleaner concentrate consists of approximately 73 to 75 pct chromite, 15-17 pct silicates, and 8 to 10 pct ...
Magnetic separation technique is widely used to improve the Cr:Fe ratio in Turkish magnesian-type chromite ores. 36,37 The recovery of fine chromite particles from the tailings was investigated by high-intensity magnetic separation and Falcon concentrator processes.
In this study, the sample of chromite sand from Konowe-Southeast Sulawesi was only processed using magnetic separator. Cr, Fe and others are transition metal elements that have paramagnetic or ferromagnetic properties. If the material is only processed using a magnetic separator, it will simplify and accelerate the beneficiation …
Magnetic separation studies carried out by Abubakre et al. (2007) on Ankha chromite ore shows that the Cr 2 O 3 content has increased to 48% from ... I., Birlik, M., 2000. Applicability of multi-gravity separation to kop chromite concentration plant. In: Mineral Processing on the Verge of the 21th Century, Balkema, Rotterdam. Proceedings …
Since more than 97% of elements Fe and Cr are basically enriched in chromite, it is difficult to achieve the purpose of improving Cr grade and Cr 2 O 3 /FeO in this chrome ore by using traditional selection and magnetic separation methods. But, the chemical dressing methods aiming to remove iron should be a choice.
The Cr:Fe ratio (chromium-to-iron mass ratio) of chromite affects the production of chrome-based ferroalloys. Although the literature contains numerous …
Chromite, Magnetic Separation, Paramagnetic, Tailing Recovery 1. Introduction Chromite is the major commercial source of chromium metal; this mineral is a
The magnetic separation technique with or without reduction roasting method was used by several researchers to upgrade the low-grade chromite ores …
In this paper, chromium slag obtained from a chromite lime-free roasting plant was used as the raw material. Pellets made of the chromium slag and pulverized coal were reduced at different pre-reduction temperatures and then separated by a melting separation process or magnetic separation process, respectively. ... Magnetic …
Chromite recovery from UG2 tailings by physical separation and flotation was studied. • Desliming, magnetic separation and acidic flotation (pH2.5) achieved …
To address this, dry magnetic separation is an alternative approach to separate these iron-bearing gangue minerals from the chromite. This work investigated on the application of different dry high-intensity magnetic separators to separate the chromite grains from ferruginous chromite ore deposits of India.