Home--->flotation processing of pgms

  • Extraction of Platinum Group Metals IntechOpen

    2018-2-21 · Processing of PGM involves comminution, flotation, smelting, converting, base metals refinery and precious metals refinery. Due to increasing chrome content

    The PGM flotation predictor: Predicting PGM ore

    2012-10-1 · Mintek’s Mineralogy Division is currently developing PGM flotation prediction software that uses data from automated mineralogy systems to provide valuable information to the plant metallurgist. Each PGM-bearing particle detected by the automated mineralogy system is individually evaluated.

    Recovery of PGMs from an oxide ore by flotation and

    2021-3-26 · Froth flotation is the process used in the Platinum Group Metal industry to upgrade the run-of-. mine ore for subsequent processes such as smelting and hydrometallurgical PGM refining. The. PGM concentrator plants achieve high PGM recoveries (>85%)

    OVERVIEW OF PGM PROCESSING Anglo American

    2015-1-12 · Platinum Group Metals (PGMs) are recovered through underground and open pit mining from poly-metallic sulphide ores containing PGMs, Nickel, Copper and other metals: • Platinum (Pt), Palladium (Pd), Rhodium (Rh) and Ruthenium (Ru) are the most prevalent of the six PGMs, with Iridium (Ir), and Osmium (Os) found in much smaller quantities

    PGM extraction from oxidized ores using flotation and

    2019-12-12 · for flotation recovery of PGMs into the rougher concentrates. Concentrates were collected manually by scraping off the froth every 15 seconds into collection trays for 20 minutes of cumulative flotation time. All flotation products were filtered, dried, weighed, and analysed for PGMs by fire assay with an ICP-OES finish. Leaching tests

    THE PRIMARY PRODUCTION OF PLATINUM GROUP

    2020-1-24 · Wet chemical treatment known as froth flotation produces a concentrate which is dried and smelted in an electric furnace at temperatures over 1,500°C. A matte containing the valuable metals is transferred to converters to remove iron and sulphur. PGMs are then separated from the base metals nickel, copper and cobalt, and refined to a high level

    FUNDAMENTALS OF THE FLOTATION BEHAVIOUR OF

    2017-4-4 · Previous mineralogical investigations (QemSCAN) performed on all effluent flotation streams of Mimosa mine (Zimbabwe) indicated the presence of appreciable amounts of platinum group minerals (PGMs), which are not recovered. Most, generally in excess of

    Investigating Ways of Improving Recovery of Slow

    2021-3-26 · slow floating minerals in a single stage (MF1) Platinum Group Metal milling and flotation plant at the Zimplats Selous Metallurgical Complex. This study was conducted with an aim of improving flotation of PGMs by measuring the slow floating ratio (SFR) and analysing the effect on grade and recoveries as dosages of flotation reagents are altered.

    1 Froth Flotation Fundamental Principles

    2009-8-27 · 1 Froth Flotation Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air bubbles are then carried to the surface and

    Potential Processing Routes for Recovery of Platinum

    2017-11-6 · The beneficiation of platinum group metals (PGMs) from pristine (unweathered) sulfide ores has conventionally been conducted through froth flotation, which typically achieves platinum recoveries of over 85%. The achieved successes of PGM concentration by flotation from the pristine sulfide ores are largely due to the occurrence of PGMs in close association with base metal sulfide minerals like

    PGM extraction from oxidized ores using flotation and

    2019-12-12 · using flotation and leaching R. Sefako1, V. Sibanda1, and K. Sekgarametso1 Synopsis Flotation and leaching were investigated as possible processing routes for improving PGM recovery from a Southern African oxidized PGM ore. Different flotation reagent schemes and lixiviants were evaluated and their PGMs extraction response measured.

    FUNDAMENTALS OF THE FLOTATION BEHAVIOUR OF

    2017-4-4 · to be exploited due to its relative ease of processing given the fairly large quantities of sulphides hosting the well-associated platinum-group minerals (PGMs) (Jones, 1999). Recent developments in flotation technology have led to the exploitation of the more difficult to process chromite-bearing UG-2 reef. New expansions are focused on

    THE FLOTATION OF HIGH TALC-CONTAINING ORE FROM

    2014-12-10 · flotation of talc prior to flotation of PGMs was tested to compare the two methods and the process flowsheet for this is shown in Figure 5.6. 1.2. PROBLEM STATEMENT There are two problems identified at the Mimosa Mine. They are: (i) Low PGE recoveries (79% compared to the South African Merensky operation’s recoveries of between 80% and 95%

    Reagent Optimization across a UG2 Plant iaeng.org

    2013-4-30 · large PGMs processing operations because the correct improvement opportunities to flotation recovery and grade [5,6]. Also, the cost of reagents typically runs into tens of millions of dollars per annum for a large PGMs operation, and therefore reagent optimization presents a good

    Effect of pH on the Recovery and Grade of Base Metal

    2011-9-10 · flotation performance. The Bushveld complex which is the world’s largest known source of PGMs with very complex sulfides and PGMs mineralogy was studied in this work. Depending on the type of reef and geography the Bushveld complex is the predominant PGM mineral types and their association and can vary to a great degree [3].

    A Complementary Milling and Flotation Advanced

    2013-10-1 · without violating the circuit’s operational constraints. Additionally, the frequency of flotation concentrate sump overflows was markedly decreased and the sump discharge was stabilised. The most interesting aspect of the control system was the linking of the milling and flotation circuits through a flotation feed density controller.

    THE PRIMARY PRODUCTION OF PLATINUM GROUP

    2020-1-24 · Mineable deposits of PGMs are very rare in the Earth’s crust. PGM mining is a capital, energy and labour intensive industry. Primary production of PGMs the transfer of metal from below ground resource to above ground material stock should be regarded as an investment. Primary and secondary production (recycling) of PGMs are complementary

    1 Froth Flotation Fundamental Principles

    2009-8-27 · 1 Froth Flotation Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air bubbles are then carried to the surface and

    The effect of copper sulphate addition on the recovery of

    2009-8-27 · flotation. The DOW 200 frother was added at a concentration of 30 g/ton to create a suitably stable froth phase where the valuable minerals could be collected for further processing. Batch flotation procedure The flotation experiments were performed using a 3-litre Leeds batch cell in the Mineral Processing Laboratory at UCT.

    Potential Processing Routes for Recovery of Platinum

    2017-11-6 · The beneficiation of platinum group metals (PGMs) from pristine (unweathered) sulfide ores has conventionally been conducted through froth flotation, which typically achieves platinum recoveries of over 85%. The achieved successes of PGM concentration by flotation from the pristine sulfide ores are largely due to the occurrence of PGMs in close association with base metal sulfide minerals like

    Flotation of platinum group metal ore materials

    2002-10-17 · Flotation is a critical operation in PGM mineral processing operations, because a high quality concentrate is required for smelting operations and there is significant potential for loss of valuable PGMs to flotation tails during the preparation of such high quality concentrates.

    THE FLOTATION OF HIGH TALC-CONTAINING ORE FROM

    2014-12-10 · flotation of talc prior to flotation of PGMs was tested to compare the two methods and the process flowsheet for this is shown in Figure 5.6. 1.2. PROBLEM STATEMENT There are two problems identified at the Mimosa Mine. They are: (i) Low PGE recoveries (79% compared to the South African Merensky operation’s recoveries of between 80% and 95%

    Characterisation and Flotation of a Weathered Platinum

    2020-1-8 · the PGE grade in the flotation concentrate is reduced with significant consequences for the downstream processes [7, 8]. In this study, a comprehensive characterisation of the weathered UG2 ore is presented and the effects of weathering on PGMs flotation efficiencies from MG4 are investigated.

    The Environmental Costs of Platinum-PGM Mining: An

    2009-9-22 · (g/t) but the processing is more akin to base metals (at percent). The typical scheme for a PGM project is a mine, flotation concentrator, smelter and refinery. The environmental costs could therefore expected to be more significant than gold mining in contrast to the uses for PGMs in many environmentally focussed technologies.

    Effect of pH on the Recovery and Grade of Base Metal

    2011-9-10 · flotation performance. The Bushveld complex which is the world’s largest known source of PGMs with very complex sulfides and PGMs mineralogy was studied in this work. Depending on the type of reef and geography the Bushveld complex is the predominant PGM mineral types and their association and can vary to a great degree [3].

    Ammonia Leaching as a Pre-Treatment for the Processing

    2020-12-8 · conventional mineral processing technologies for the treatment of low grade oxidised PGM ores. The exposure of the ore to the atmosphere leads to the formation of an oxidation layer (consisting of base metal oxides) which inhibits the flotation process that requires a

    A Complementary Milling and Flotation Advanced

    2013-10-1 · without violating the circuit’s operational constraints. Additionally, the frequency of flotation concentrate sump overflows was markedly decreased and the sump discharge was stabilised. The most interesting aspect of the control system was the linking of the milling and flotation circuits through a flotation feed density controller.

    1 Froth Flotation Fundamental Principles

    2009-8-27 · 1 Froth Flotation Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air bubbles are then carried to the surface and

    Physicochemical Problems of Mineral Processing

    Since the PGMs are often associated with sulphides, copper sulphate is widely used as an activator in PGM flotation but can inadvertently activate the gangue minerals as well as reduce the recovery of PtTe2 which accounts for up to 40% of the Pt in the Platreef ore body.

    Characterisation and Flotation of a Weathered Platinum

    2020-1-8 · the PGE grade in the flotation concentrate is reduced with significant consequences for the downstream processes [7, 8]. In this study, a comprehensive characterisation of the weathered UG2 ore is presented and the effects of weathering on PGMs flotation efficiencies from MG4 are investigated.

    [PDF] Kell hydrometallurgical process for extraction of

    Synopsis The Kell Process has been developed for the extraction of platinum group metals (PGMs)and base metals from sulphide flotation concentrates. The process has been successfully tested on several different sulphide flotation concentrates, including those from the UG2 chromitite horizon and the Platreef mafic/ultramafic layer. It has been shown to provide high (>95 per cent) and selective

    A conceptual flowsheet for heap leaching of platinum

    2017-6-19 · when the PGMs occur as slow-floating minerals, or when the PGMs are difficult to liberate, the secondary cleaner flotation cells often produce a low-grade concentrate, that can be associated 1 Tel +00 27 21 650 3804, Fax + 00 27 21 650 5501, [email protected] 2 Dr. JJ Eksteen is a Visiting Professor to the University of Stellenbosch, South Africa

    Effect of pH on the Recovery and Grade of Base Metal

    2011-9-10 · flotation performance. The Bushveld complex which is the world’s largest known source of PGMs with very complex sulfides and PGMs mineralogy was studied in this work. Depending on the type of reef and geography the Bushveld complex is the predominant PGM mineral types and their association and can vary to a great degree [3].

    DOI: 10.1595/147106704X1667 Treatment of Platinum

    metallurgical processing. Therefore, the develop-ment of complex hydrometallurgical technology to recover pgms and non-ferrous metals from low-sulfide pgm-bearing ores has considerably simplified the treatment, decreased the operating costs and improved the environmental conditions. Our investigations involved flotation concen-

    Kell hydrometallurgical extraction of precious and base

    2019-6-27 · Kell is a hydrometallurgical treatment option for the recovery of platinum group metals (PGMs), gold, silver, and base metals from flotation concentrates to refined products on site. The process is cyanide-free, while eliminating emissions of sulphur dioxide, arsenic trioxide, and other toxic species often emitted by smelters and roasters.

    Recovery of Platinum Group Metals from Spent

    2018-5-7 · The recovery of platinum group metals (PGMs) from spent automobile catalysts is a difficult process because of their relatively low contents in the scrap. In this study, to improve the efficiency of the existing recycling techniques, a novel physical concentration method involving treatment with FeCl2 vapor has been examined. The reactions occurring between typical catalyst components and

    Ammonia Leaching as a Pre-Treatment for the Processing

    2020-12-8 · conventional mineral processing technologies for the treatment of low grade oxidised PGM ores. The exposure of the ore to the atmosphere leads to the formation of an oxidation layer (consisting of base metal oxides) which inhibits the flotation process that requires a

    Kell Process

    2021-6-12 · Kell Technology. The Kell Process has been developed for extraction of platinum group metals (PGM), gold, silver and base metals from PGM sulfide flotation concentrates without smelting. The hydrometallurgical process has been successfully demonstrated on several different PGM and polymetallic concentrates, including those from the UG2, Merensky and Platreef in South Africa, Great

    A Complementary Milling and Flotation Advanced

    2013-10-1 · without violating the circuit’s operational constraints. Additionally, the frequency of flotation concentrate sump overflows was markedly decreased and the sump discharge was stabilised. The most interesting aspect of the control system was the linking of the milling and flotation circuits through a flotation feed density controller.

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