Platinum group metals (PGMs) are a group of six metals with high market value and key importance to many industrial sectors. Due to their low prevalence in the Earth's crust and high demand, these metals have been recognized as critical materials for many years. Along with economic development, the natural resources of the platinum …Web
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The former IL is very well known for decades in hydrometallurgical solvent extraction, named as Aliquat ®336, and its properties towards PGMs recovery from hydrometallurgical solutions have been ...Web
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It has been shown to provide high (>95 per cent) and selective extraction efficiencies for the key valuable metals, i.e. Pt, Pd, Rh, Au, Ni, Co, Cu. Discover the world's research 25+ million membersWeb
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Most research on the use of ionic liquids for the liquid extraction of platinum group metals focuses on the use of their dilute organic solutions, in which the role of the …Web
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Hydrometallurgical processes have been proposed as an alternative to pyrometallurgical ones, with leaching and separation by solvent extraction being core …Web
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The route of Pt recovery from SAC mainly consists of three steps, including pretreatment, enrichment and refining, among which enrichment and refining are the key steps for the recovery of Pt from SAC [2, 19, 20].The enrichment of PGMs from SAC can be achieved through pyrometallurgical or hydrometallurgical methods [].Although the …Web
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Zhang B, Shi P, Jiang M (2016) Advances towards a Clean hydrometallurgical process for chromite. Minerals 6:1–7. ... Charlesworth P (1981) Separating the platinum group metals by liquid-liquid extraction. Platinum Met Rev 25(3):106–112. MathSciNet Google Scholar Bateman (2005) Extracting PGMs from …Web
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Considering economics and environmental sustainability, recycling of critical metals from end-of-life devices should be a priority. In this work the hydrometallurgical treatment of a spent automotive catalytic converter (SACC) using HCl with CaCl2 as a leaching medium, and solvent extraction (SX) with a thiodiglycolamide derivative, is …Web
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These materials are usually processed by pyro/hydrometallurgical processes consisting of thermal treatment followed by leaching, precipitation or solvent extraction. This paper reviews platinum leaching from such resources using acidic and alkaline solutions in the presence of oxidizing agents, such as nitric acid and hydrogen peroxide, sodium ...Web
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The selective reactive extraction of platinum, palladium and rhodium from a 6 M HCI collector solution of spent autocatalysts and from a model solution containing large amounts of iron and nickel was investigated. ... This paper proposes a hydrometallurgical process to recover platinum from diesel catalysts, based on a first leaching step with ...Web
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Platinum Lake Technology Inc., Canada has successfully developed a hydrometallurgical process for the recovery PGMs (95% Pt and 98% Pd) from spent …Web
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The hydrometallurgical process consists of two main stages, the leaching stage, where metals are leached from their ores in an aqueous media, and the …Web
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Platinum Group Metals (PGMs) play a significant role in the manufacturing of catalysts, super alloys, electronics, space materials, biomedical equipments, jewellery, etc. due to their excellent electrical and thermal conductivity as well as chemical resistivity. The rising demand of PGMs in industrial applications and their limited natural resources have …Web
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Extraction and separation of platinum group metals (PGMs) from secondary raw materials are usually carried out via hydrometallurgical …Web
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In the present review, all major PGM recovery techniques are presented and discussed. Hydrometallurgical processes could gain a foothold in industrial scale recycling, by adopting a direct ...Web
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pyro/hydrometallurgical Pt recycling technologies used t he existing facilities of the same . ... gas mixture to completely extract platinum from the catalysts. A r eco ver y o f up to 9 5.9 % o f ...Web
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In the typical PGMs recovery process, PGMs are extracted from scraps by smelting them with collector metals such as copper, or dissolving the scraps in strong …Web
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Process Details Lonmin Platinum Anglo Platinum Impala Platinum Technology Precipitation Solvent extraction, SX Ion exchange, IX Feed 65–75% PGMs 30–50% PGMs 60–65% PGMsWeb
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Recovery by hydrometallurgical extraction of the platinum-group metals from car catalytic converters. Miner. Eng. (2011) T.V. Acker Method Development for Determination of Platinum Group Metals using Tandem ICP-mass Spectrometry and Application to Measure their Dispersion in Urban Areas, Master dissertationWeb
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Hydrometallurgical methods such as chloride leaching with oxidants possess a high selectivity of palladium and low consumption of energy, and are cost-effective and flexible for different volume feeds compared with pyrometallurgical methods. ... Ramachandra used LIX 841 and Alamine 336 to extract platinum and palladium (A/O = …Web
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To concentrate and/or purify the leaching solutions loaded with PGMs, solvent extraction (SX) (or liquid–liquid extraction) is one of the unit operations mostly applied in hydrometallurgy to recover palladium and platinum from leaching solutions of spent catalysts . Accordingly, SX is the chosen unit operation to be explored in this review.Web
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Demand for platinum (Pt), palladium (Pd) and rhodium (Rh) as parts of platinum group metals (PGMs) has continued to increase as a consequence of increase in their applications. Various extraction methods have been developed to produce the metals including leaching-based process using halides, sulfate–chloride and cyanide, which …Web
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Further, liquid-liquid extraction with quaternary phosphonium ionic liquid (Cyphos IL 101) was applied to recover PGM from the leach solutions (after leaching with a mixture of HCl, H 2SO 4, and H 2O 2) and to separate Pt(IV) from Rh(III). Keywords: leaching, platinum group metals (PGM), recovery, spent automotive converters, liquid-Web
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The current paper presents an innovative hydrometallurgical methodology for recovery of precious metals from different waste streams. The used hydrometallurgical process, which has been already patented (Birloaga and Francesco Veglio, 2019), consists of a single leaching system (HCl, H 2 O 2 and C 2 H 4 O 2) of all elements and then …Web
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Therefore, e-waste management is an essential issue. In this study, we critically have reviewed the existing extraction processes and compared among different processes such as physical, biological, supercritical fluid technologies, pyro and hydrometallurgical, and hybrid methods used for metals extraction from e-waste.Web
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The general methods of extracting and separating platinum from spent catalysts include pyrometallurgy and hydrometallurgy.Web
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Recovery by hydrometallurgical extraction of the platinum-group metals from car catalytic converters. Miner. Eng. (2011) J.G. Kim Material flow and industrial demand for palladium in Korea. Resour. Conserv. Recycl. (2013) J.-Y. Lee et al. Liquid–liquid extraction/separation of platinum(IV) and rhodium(III) from acidic chloride …Web
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The common extraction process refers to pyrometallurgy combined with hydrometallurgy, where platinum group metal ores (e.g. Merensky Reef ore grades …Web
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The extraction methods can be classified in three groups: hydrometallurgical, volatilization and pirometallurgical methods (Mishra, 1993). The method we have proposed belongs to the hydrometallurgical methods group ( Gupta and Mukherjee, 1990 ).Web
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A hydrometallurgical approach to recover palladium from a spent industrial hydrogenating catalyst is described. The work aimed to enhance palladium and minimize aluminum recoveries.The efficiency of chloride leaching has been evaluated by varying the most determinant parameters affecting the leaching process. HCl solutions and mixtures …Web
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Consequently, the development of integrated environmentally-friendly and cost-effective hydrometallurgical processes for PGMs recycling typically count on this separation technique. ... Gupta B, Singh I (2013) Extraction and separation of platinum, palladium and rhodium using Cyanex 923 and their recovery from real samples. …Web
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DOI: 10.1016/J.MINENG.2010.12.009 Corpus ID: 98111930; Recovery by hydrometallurgical extraction of the platinum-group metals from car catalytic converters @article{Aberasturi2011RecoveryBH, title={Recovery by hydrometallurgical extraction of the platinum-group metals from car catalytic converters}, author={Dorleta Jimenez de …Web
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platinum an d rhodi um, f rom spent automotive c onverters using hydrometallurgical techniques such as leaching and liquid - liquid extraction. The XRD analysis confirm ed the presen ce of ...Web
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After verified the presence and distribution of PGMs in the samples, a hydrometallurgical extraction method was studied to recover those PGMs. Section snippets Materials. ... (TWCs) have focused on the extraction of platinum group metals (PGMs), with less characterization and analysis of their properties. This can lead to an …Web
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The extraction of PGMs from waste TWCs using hydrochloric acid (HCl) has been extensively researched. However, the addition of oxidizing agents like H 2 O 2 …Web
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Recovery by hydrometallurgical extraction of the platinum-group metals from car catalytic converters. May 2011; Minerals Engineering 24(6) ... As hydrometallurgical solvent extraction (SX) methods ...Web
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