WO2020188527A1
This invention relates to a process for the enhanced recovery of chromite and platinum group metals (PGMs) from a mixed chromite/PGM ore. Ore is ground 12, classified 14, to produce a coarse fraction and a fine fraction 36. The coarse fraction is subjected to gravity separation 16 and coarse particle flotation 20 to obtain a chrome concentrate and a PGM …
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TREATING CHROME TAILINGS FOR PGMs
The process at Millsell involves six stages, the first of which is the obviously the mining that produces the tailings. The mines, in upgrading the chromite content …
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Systematic characterization of historical tailings for …
The proposed conceptual framework for reprocessing historical tailings to remediate the repository and/or recover critical metals and minerals is divided into six steps with defined tasks and sub-steps with associated tasks (Fig. 1).In order to have relevant information and knowledge in each of these steps, it is important to identify the relevant …
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Characterisation and Pre-concentration of Chromite
For recovering chrome values from the Karagedik Concentrate tailings a circuit comprising of wet high intensity magnetic separator and column flotation for producing a concentrate assaying 46 to ...
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Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under the …
The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to …
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PGM recovery from chromite tailings a new art or more …
1 Abstract Recent years has seen an upsurge in the interest for recovering Platinum Group Metal (PGM) concentrates from traditional chrome producer's tailings streams and dams.
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Quantitative mineralogical characterization of chrome …
are beneficiated in chrome ore beneficiation plants in order to obtain high-grade concentrates (Cr2O3: >45wt%). During beneficiation, approximately 50wt% of the total feed is dis-carded as tailings which contain significant amounts of chromite. Several studies have been focused on recovering chromite from the plant tailings [3−4].
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Recover Chromite by Flotation
Recover Chromite by Flotation. Table of Contents. This report describes an investigation by the Bureau of Mines of flotation techniques for the recovery of chromite from fine-grained disseminated ores. Reported work on the concentration of chromiferous materials shows that flotation has been applied almost exclusively to slime-free pulps.
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Processes | Free Full-Text | Recycling of Chrome-Containing …
DOMBP's tailings mineral resources, which have been accumulated since 1938, amount to 2.2 million tons as of 1 January 2018. In total, there are 2.2 million tons at 27.65% Cr 2 O 3, which is 0.6 million tons in terms of chromium oxide [].The technological scheme of chrome ore processing at DOMBP includes standard operations of gravity …
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(PDF) Recovery of Chromite Values from Plant Tailings by …
The Tata Steel Chrome Ore Beneficiation (COB) plant is generating 50 tph of tailings assaying 17% Cr 2 O 3. A critical review on practice of the plant operating personnel is concerned in the grade ...
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Selective Flocculation of Chromite Tailings | Transactions …
Odisha state is the major reserve of the chromite ore. Due to the extensive applications, high-grade chromite ore is getting depleted day by day. Now it is a challenge for the industry to utilize these low-grade ores and tailings. Several attempts were taken to upgrade the low-grade chrome ores and tailings using different gravity separation …
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Chrome ore beneficiation challenges & opportunities – A …
Recovery of ultrafine particles below 75 μm size from process tailings by flotation technique is the subject of recent investigations. ... From the review it can be observed that the research work on tailing losses and ultrafine recovery of chrome ore need more focus in the Indian context. In order to solve the major problems that are ...
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Chrome ore beneficiation challenges & opportunities – A …
Recovery of unrecoverable ultrafine chrome particles. 5.4. Reprocessing of stockpiled tailings containing valuables. 5.5. Concentrate with required Cr 2 O 3 content and Cr/Fe ratio. Conclusion. The recovery of fine chromite values from tailings has been the subject of recent investigations.
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(PDF) Characterisation and Pre-concentration of …
For recovering chrome values from the Karagedik Concentrate tailings a circuit comprising of wet high intensity magnetic separator and column flotation for producing a concentrate assaying 46 to 48% Cr2O3 was …
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Efficient utilization of nickel rich Chromite Ore Processing Tailings …
The tailings generated from the process contains valuable chromite and iron-bearing minerals, loss of which is a matter of concern for the ferrochrome industry worldwide. ... The profit pursued by enrichment with smelting route addresses the problem of chrome recovery but does not promote the concept of circular economy and …
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Chrome ore beneficiation challenges
Research highlights. High tailing losses from the existing chromite plants (9–20% Cr 2 O 3 2 O 3. Chromite ore. Chromite deposits. Chromite beneficiation. Gravity …
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Fine chrome beneficiation and reverse PGM upgrade of …
μm. The tailings were successfully upgraded from 20–22% wt.% Cr 2O 3 to 45–48%, with an overall recovery of 60–65%. Tripathy et al. (2013) reported chromite upgrades from 26.4% to 40.1% Cr 2O 3 with 37.6% recovery using WHIMS on an Indian chrome plant tailings stream. Background Field Intensity versus Field Intensity in the Matrix
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Chrome ore beneficiation challenges
High tailing losses from the existing chromite plants (9–20% Cr 2 O 3 ). Accumulation of huge amount of low and sub-grade fines (10–30% Cr 2 O 3 ). Utilization …
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Eastplats achieves first PGM recoveries from tailings project
The company is using feed from its retreatment project, located at the company's Crocodile River mine, in South Africa, following the recovery of chrome concentrate.
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Fine chrome recovery | Commodities | Mineral Technologies
Using our Wet High Intensity Magnetic Separators (WHIMS) to recover legacy chrome tailings, the unique design produces an additional 10-15% mass yield. Since then, we …
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(PDF) The Challenges and Prospects of Recovering Fine
For recovering copper from tailings, regrinding is needed to liberate copper minerals from locked grains. As a result, liberated but fine copper mineral particles are formed.
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Uranium Extraction from Tailings by Dilute Alkali …
Preliminary extraction research was carried out to develop a suitable dilute alkali pretreatment–sulfuric acid leaching process for uranium recovery from tailings containing 80 ppm uranium. The effects …
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Minerals | Free Full-Text | Comprehensive Utilization of Tailings …
The aim of this study was to develop a comprehensive technology for the utilization of tailings from quartz vein-hosted gold deposits. We investigated the recovery potential and separation process for gold, feldspar, and quartz from tailings samples collected from the Jinqu gold mine in Henan province, China. The sequence of the …
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PGM recovery from chromite tailings
PGM recovery from chromite tailings - a new art or more of the same? November 2011. Conference: Flotation 2011. At: Cape Town, South Africa. Authors: E. Nel. Abstract and Figures. Recent...
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Fine chrome recovery | Commodities | Mineral Technologies
Our low maintenance chrome processing plant designs improve plant capacity, increase wear life and improve overall recovery of ultra fines. In 2015 we designed and delivered the first alternative modular chrome plant of its kind. Using our Wet High Intensity Magnetic Separators (WHIMS) to recover legacy chrome tailings, the unique design produces an …
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(PDF) Characterisation and Pre-concentration of Chromite …
For recovering chrome values ... The tailings generated from the process contains valuable chromite and iron-bearing minerals, loss of which is a matter of concern for the ferrochrome industry ...
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A study on the recovery of fine chromite from UG2 tailings
The recovery of chromite from the tailings streams of South African UG2 platinum concentrators adds significant revenue to these operations. This paper describes exploratory work by Pilanesberg Platinum Mines (PPM) to assess various process options of treating the finer fractions and produce a concentrate assaying at least 40 % Cr 2 O 3 …
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Characterisation and Pre-concentration of Chromite …
Chrome Ore Beneficiation (COB) plant is generating 50 tph of tailings assaying 17% Cr2O3. A critical review on practice of the plant operating personnel is concerned in the grade-recovery characteristics of unit operations. But separation insight and influence of different operating and
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Bioleaching of heavy metals from metal tailings
The tailings will be released and migrated into water bodies and soil through oxidation, weathering, and other effects in the process of tailings storage. Heavy metals cause serious pollution to the surrounding water and soil environment, pose a threat to farmland and other ecosystems, and human health is also endangered ( Nguyen et al., …
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Process development for elemental recovery from …
This extraction process offers the significant advantage of recovering major elements from tailings in a readily-available soluble form, which could be subsequently …
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