Modeling and optimization of spiral concentrator for …
In this study, a three-level Box–Behnken factorial design combined with Response Surface Methodology (RSM) for modeling of process parameters of spiral …
Spiral For Chromite Seperation
Gravity separation of a UG-2 ore secondary sample for the reduction …
Gravity separation of the chromite and silicate particles was investigated. A chromite-rich stream could not be discarded due to high PGE losses (16%). Pilot plant cleaner spiral test work confirmed the laboratory trends. A 32% Cr 2 O 3 reduction and a 3.7% higher PGE recovery were achieved. The inclusion of a spiral circuit reduces the ...
(PDF) Evaluation of Chromite Recovery from Shaking Table …
This study aimed to evaluate the chromite recovery from shaking table tail-ings of Forumad plant by a dry high-intensity magnetic separation. The average feed grade of chromium xide (Cr 2 O 3 ...
Sunil Kumar Tripathy* and Y. Rama Murthy
for separation of ultrafine chromite', Int. J. Mining and Mineral ... Particle separation in the spiral concentrator was simulated on discrete element methodology for the iron ore fines (Mishra ...
A preliminary study of particle separation in spiral concentrators
In the spiral concentrator, which treated chromite ore as feed, the maximum separation efficiency attained was 82% for 178 µm particles.This experimental study provides data to identify the ...
Fine chrome recovery | Commodities | Mineral Technologies
WW6e Spiral Separators – five or seven turn in single or twin start configurations allows enhanced mineral separation due to the addition of wash water and auxiliary con splitters. CS1 Spiral Separators – high performance, and high wear, three turns, and available in a single, twin or triple start configuration. It is the latest Mineral ...
Performance Evaluation of Spiral Separator for Coal …
The spiral classifier, recently, has emerged as the most effective gravity separator since its introduction. The spiral separator also known as spiral concentrator, continues to be the most effective gravity separator, useful in processing a wide variety of minerals such as coal, iron, chromite, gold, zircon and other heavy minerals ores [1, …
A new method for gravity separation: Vibrating table gravity
A recently developed gravity concentration equipment was studied. • Geometrical and operational parameters were disclosed in detail. • Separation performance was investigated with distinct chromite ore tests.. Effect of particle size, ore type, liberation, and desliming were discussed. Up to 93.22% recovery and 50.20% grade values were …
Top 3 Chrome Ore Processing Methods that Get Higher …
The specific gravity of chromite ore is 4.1~4.7g/cm 3, while that figure of associated gangue and iron silicate minerals is generally 2.7~3.2g/cm 3. Therefore, we can utilize the difference in specific gravity between minerals to recover chromite with gravity separation equipment such as shaking tables, spiral
A discussion of magnetic separation techniques for …
In some cases, chromite concentrates can be produced by 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
Spiral Concentrator
During separation, the slurry enters the spiral through a feed box and then flows on to the spiral surface. As the slurry travels down the spiral, mineral grains settle and sort according to size, shape, and specific gravity. Spiral separation uses a flowing film principle based on the size and specific gravity difference present in a mineral ...
Multiobjective optimisation of spiral concentrator for separation …
Chromite beneficiation plants generate large amount of tailings with significant amounts of ultrafine chromite minerals. In the present investigation, Box−Behnken experimental design was used to model the effects of feed rate, feed pulp density and splitter position on the performance of a spiral concentrator for separating the ultrafine chromite values from …
Modeling and Optimisation of Spiral Concentrator for
Spiral concentrator for separation of ultrafine chromite (Sunil Tripathy and Rama Murthy 2012) was successfully tried. Some other scholars studies the effect of wash water on …
Modeling and optimization of spiral concentrator for separation …
DOI: 10.1016/J.POWTEC.2012.01.035 Corpus ID: 98667820; Modeling and optimization of spiral concentrator for separation of ultrafine chromite @article{Tripathy2012ModelingAO, title={Modeling and optimization of spiral concentrator for separation of ultrafine chromite}, author={Sunil Kumar Tripathy and Yanamandra Rama Murthy}, …
Maximizing Chrome Ore Recovery Through Gravity Separation …
Chrome ore is fed into a spiral trough, where the heavier chromite particles spiral downwards and are collected, while lighter gangue materials are discharged. 3.
Improving the Quality of Ferruginous Chromite Concentrates Via Physical
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 …
How to Recover Chromite
To improve chromite recovery with the Humphrey's spiral, a sample of Emma Bell ore was ball mill ground to minus 100 mesh and then processed with the spiral (table 11). This procedure improved the concentrate grade (splits 1 and 2) to 21.6 pct Cr2O3 from 17 pct for the minus 28-mesh test (see table 9), but did not decrease the …
Chromium Processing | Process Flow, Cases
Because chromite is weakly magnetic, the technology of purifying chromium ore with high-intensity magnetic separation has been very mature with the development of high-intensity magnetic separation. ... The 200mesh slurry will be pumped to a gravity separation machine, spiral chute, and shaking table, the spiral chute is for …
(PDF) Magnetic separation studies on ferruginous chromite …
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.
Low-Grade Chromite Beneficiation Through Spiral
In the spiral concentrator, which treated chromite ore as feed, the maximum separation efficiency attained was 82% for 178 µm particles.This experimental study provides data to identify the ...
Process optimization of a chrome ore gravity concentration …
Chromite ore is geologically associated with gangue materials which have lower density compared to pure chromite (FeO.Cr2O3). Gravity separation techniques are very suitable for beneficiation of ...
Multiobjective optimisation of spiral concentrator for separation …
Int. J. Mining and Mineral Engineering, Vol. 4, No. 2, 2012 Multiobjective optimisation of spiral concentrator for separation of ultrafine chromite Sunil Kumar Tripathy* and Y. Rama Murthy Research and Development Department, Tata Steel, Burma Mines, Jamshedpur, Jharkhand, 831 007, India Fax: + 91 (0) 657 227 1510 E-mail: …
Multiobjective optimisation of spiral concentrator for …
In the present investigation, Box−Behnken experimental design was used to model the effects of feed rate, feed pulp density and splitter position on the performance …
A study on the recovery of fine chromite from UG2 tailings
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 ...
Spiral Concentrator | High Performance Gravity Concentration …
DOVE Spiral Concentrators are cost-effective, high performance gravity concentration separators used for separation and recovery of a wide range of heavy minerals: hematite, zircon, ilmenite, rutile, iron ore, chromite, coal, tungsten ore, silica sands.
Evaluation of Spiral Chromite Tailings of South Africa
In this study, beneficiation of the spiral chromite tailings taken from South Africa, which contains 22.5% Cr2O3, were investigated by using combination of gravity units.
Spiral conditions for the recovery of ultra-fine particles
Spiral separators for the recovery of ultra-fine particles have a unique profile, pitch and features to ensure it performs efficiently. The flow on the spiral trough must be controlled …
Size-by-size evaluation of the concentration process in spiral
In the current work, chromite ore (d80 = 290 µm) was treated using spiral concentrators and the performance of spiral concentrators was examined. The design of the separation circuit comprised of ...
Recovery of ultra-fine chrome with spiral concentrators
The spiral uses its unique profile to increase its chromite separation efficiency. Feeding the spiral with a grade of 19.89% Cr2O3, a 35% chromite recovery by mass was …
Low-Grade Chromite Beneficiation Through Spiral …
This review assesses all chromite beneficiation methods, along with a detailed examination of spiral concentrators, which is used as a conventional method for …
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