Chromtech: a chrome jewel in the PGM crown with new process …
Large fluctuations in feed size as mentioned, for example, is something ChromTech had to account for during the design, which consequently led to the construction of plant which offers a lot of operating flexibility. "We believe we have created a very bespoke tailings retreatment operation that produces high quality chrome materials."
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Beneficiation of South African chromite tailings using
field gradient as well as high intensity is therefore an important aspect of separator design. In this project, chromite tailings from Western Limb of the South African Bushveld …
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Chapter 4.1 Waste and Materials Management
d. Descriptions of facility design criteria; e. Design report(s); f. Short-term and long-term placement plans and schedules for tailings and waste rock or other facilities that are subject to stability concerns; g. Master tailings placement plan (based on life of mine); 197 See also IRMA Chapter 4.2, criteria 4.2.2
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(PDF) Design, construction and management of …
Tailings are a mixture of coarse-grained and fine-grained particles of ore, including crushed rock, processed water, extraction process additives, and a small amount of valuable minerals (Vick ...
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PGM Ore Processing at Impala's UG-2 Concentrator
The feed to Impala's UG-2 plant contains 22 - 24% Cr2O 3, or roughly 50% chromite. The aluminium silicate mineralisation includes primary magnesium alumino-silicates such as feldspars, pyroxenes and chlorite, and. comprise roughly 70% of the PGM (platinum group minerals) in the UG-2 plant feed, the remainder largely being alloys of iron, lead ...
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Considerations for Preparing Design Criteria for Dewatered Tailings …
Dewatered tailings facilities (thickened, paste, filtered) are generally considered safer alternatives to conventional tailings disposal, primarily due to the lower amounts of water stored as a pond or interstitially within the tailings mass. While it is acknowledged that a risk-based approach to TSF design should always be followed, the pressure to deliver …
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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 financial returns to these operations. Whilst the coarser fractions are amenable to ...
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Tailings dewatering by pressure filtration: process …
The cake dewatering process in a filter press is quite complex and can include a series of steps, such as consolidation by membrane squeezing, desaturation by air blowing, and deliquoring. Each step should be optimised and properly set-up (Stickland et al. 2016, 2017). This versatility makes the filter press design and sizing phase critical.
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PGM recovery from chromite tailings
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. This is evident ...
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Dry Stack Tailings – Design Considerations
The placement of these materials within the dry stack is an important design consideration, which will be discussed in the Section 3. 2.3 Hydraulic Conductivity The hydraulic conductivity (saturated) of filtered tailings tend to be relatively low, typically less than 1 x 10-6 centimeters per second (cm/sec).
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[PDF] Tailings dewatering by pressure filtration: process optimisation
A series of case studies are presented showing how different steps contribute to the design and customisation of the filter presses and describing their main features. Tailings dry stacking is a mine tailings storage method that presents many advantages and is becoming increasingly attractive to the mining industry. Filter presses …
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Considerations for Preparing Design Criteria for Dewatered Tailings …
This paper discusses current practice for evaluating key TSF design criteria, taking as a base leading guidelines such as MAC (2019), ANCOLD (2012) and CDA (2007, 2014), and relates this to the context of dewatered tailings facilities. It identifies important elements to consider, issues likely to be encountered and areas of improvement, and …
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ug2 tailings recovery of chrome ore recovery rate
Jan 03, 2012· From the beneficiation of the chromite ore by table, it is observed that the Cr 2 O 3 can be improved to 48.9% from the feed assaying 40.8% with Cr: Fe ratio of 2.31. The Cr: Fe ratio has varied between 1.7 to 2.3 as there is an increase in the wash water flow rate. The recovery of Cr 2 O 3 in the concentrate fraction is varied ...
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Tailings dewatering by pressure filtration: process …
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Development of PGMs and Chrome Extraction Circuit …
The results obtained indicate that the installation of chrome plant in the middle of flotation circuit reduced the amount of chrome in the final PGM's product and PGMs entrained in …
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A study on the recovery of fine chromite from UG2 tailings
This paper describes the results of a series of physical separation, and chromite bench flotation tests that have been carried out at acidic and natural pH …
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Tailings filtration: integrating process design with …
Tailings filtration: integrating process design with geotechnical outcomes R de Kretser & F Sofra Paste 2023, Banff, Canada 458. 3 Tailings filtration system design. Full design of a tailings filtration and dry stacking system, or the evaluation of it against other candidate management strategies, requires testwork across all the areas outlined ...
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chrome tailings how to in zimbabwe
Chrome Mining Methods In Imbabwe Chrome Mining Methods In Imbabwe Zimbabwe hosts the second largest PGM resource in the world after South Africa on the Great D. ... chrome tailings how to in zimbabwe T10:11:39+00:00 Who we are > Products > Cases > Solutions > Contact Us > Solutions.
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A study on the recovery of fine chromite from UG2 tailings
Chromite is concentrated mostly with shaking tables and spirals. Flotation can be considered as a leading process to beneficiate the fine chromite which cannot be enriched by gravity separation.…. Expand. 6. PDF. Semantic Scholar extracted view of "A study on the recovery of fine chromite from UG2 tailings" by V. Ross et al.
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Design Criteria | Guide to Design
There are a few steps that should be followed when creating design criteria: 1. Define the purpose of the project. 2. Identify the design requirements. 3. Identify the project's special needs. 4. Outline the …
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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 of their ore, produce a tailings stream that contains the majority of the PGMs of the ROM chrome ores. It is these chrome ores with elevated levels of PGMs that are treated.
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ThickenedandPasteTailingsPipelineSystems: Design …
developed over the last decade. This series of papers outlines the process for designing and implementing a typical surface tailings or underground backfill pipeline system. The papers comprise the following parts: Part 1 (presented at Paste06) discussed: o development of the design criteria document, o issues to be considered for the test …
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Bioleaching of heavy metals from metal tailings utilizing …
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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A study on the recovery of fine chromite from UG2 tailings
A study on the recovery of fine chromite from UG2 tailings | Semantic Scholar. DOI: 10.1016/j.mineng.2022.107801. Corpus ID: 251635851.
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Considerations for Preparing Design Criteria for …
The DS248 guidelines outlines a phased stability assessment, with each phase introducing increased complexity in the stability analyses, dependent on the TSF's business importance, risk profile and the level of the study. No guidance is provided with respect to assignment of categories to each of these aspects.
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Modelling and optimization of process parameters for
Abstract. Chromite tailings are generated from chrome ore beneficiation plants, containing substantial quantities of ultrafine particles. Generally these ultrafine …
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OVERVIEW OF PGM PROCESSING
Tailings Purchased Concentrate Concentrate Furnace Matte Smelting Ore Anglo Converting Process (at Rustenburg) Our configuration differs from our competitors - we have a broad footprint across all 3 Bushveld limbs. Consequently, our integrated production system is more complex (i.e.13 concentrator plants, 3 smelters and 2 refineries) g g
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The impact of platinum production from UG2 ore on …
case of the latter process even more UG2 can be used due to the higher chrome recovery of the process. The The pellets are fed in various forms, including pre-reduced, si ntered/pre-oxidised, cold ...
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Technical Report: Design and Evaluation of Tailings …
This document was prepared by the U.S. Environmental Protection Agency (EPA). The mention of company or product names is not to be considered an endorsement by the U.S. Government or the EPA. Sections of this document rely heavily on Steven G. Vick's Planning, Design, and Analysis of Tailings Dams (BiTech Publishers Ltd. 1990).
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GLOBAL INDUSTRY STANDARD ON TAILINGS …
TOPIC III: DESIGN, CONSTRUCTION, OPERATION AND MONITORING OF THE TAILINGS FACILITY PRINCIPLE 4: Develop plans and design criteria for the tailings …
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