cyanide leaching of platinum group metals

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Recovery of PlatinumGroup Metals from an Unconventional

The pressure autoclave leaching of PGMs with the biogenic cyanide solution yielded the maxima of 91% Pt, 94% Pd, and 87% Rh at 150°C, which remarkably increased with pOa higher accumulation of platinumgroup metals (PGMs) in exhausted autocatalytic converters, their recycling through an integrative biosolvochemical technique has beenRecovery of PlatinumGroup Metals from an Unconventional
A new technique for extraction of platinum group metals

2006年8月1日· At room temperature and pressures, the reaction between sodium cyanide and platinum group metals (PGMs) does not occur because of poor kinetics However,2015年12月10日· This paper provides an overview of the various processes used in the recovery of platinum group metals (PGMs) from spent catalysts PGM recovery isRecovery of platinum group metals from spent catalysts:
Hydrometallurgical recovery/recycling of platinum by the

2013年2月1日· Platinum Leaching Recycling Hydrometallurgy 1 Introduction Platinum (Pt) is a costly precious metal with applications in the manufacturing of catalysts,Recovery of PlatinumGroup Metals from an Unconventional Source of Catalytic Converter Using Pressure Cyanide Leaching and Ionic Liquid Extraction JOM (1989) 2022 JanRecovery of PlatinumGroup Metals from an Unconventional
The application of activated carbon for the adsorption

SYNOPSIS The research presented in this paper investigated the practical aspects of the recovery of platinum group metals (PGMs) from a dilute cyanide leach solution containing base metals, in a manner similar to2018年1月6日· Platinum group metals (PGMs) comprises of six noble metals namely Ruthenium (Ru), Rhodium (Rh), Palladium (Pd), Osmium (Os), Iridium (Ir), Platinum (Pt) which are found together in the dblock ofCommercial Processes for the Extraction of Platinum
Recovery of platinum group metals from spent catalysts: A

2015年12月10日· HighTemperature Cyanide Leaching of Platinum Group Metals from Automobile CatalystsPlant Unit US Bureau of Mines (1995) Google Scholar Ezawa, 1993 Ezawa N, 1993 Process of recovering platinum group metal US papent Google Scholar Feng and Yu, 1997 CW Feng, JH Yu2015年12月10日· Abstract This paper provides an overview of the various processes used in the recovery of platinum group metals (PGMs) from spent catalysts PGM recovery is interesting due to their vast industrial applications and high market prices From the use of renewable resources and environmental protection viewpoints, recycling of PGMsRecovery of platinum group metals from spent catalysts: A
A new technique for extraction of platinum group metals by

2006年8月1日· In this work, a new technique to treat Pt–Pd sulfide flotation concentrates and spent autocatalysts by pressure cyanidation is put forward, and the results of 5 kgscale batch experiments in a 50 L autoclave are reported for process development The cyanide leaching reaction mechanism is also discussed2013年2月1日· High temperature cyanide leaching of platinumgroup metals from automobile catalystspilot plant US Bureau of Mines RI 9543 (1995) (18 pp) Google Scholar Letowski and Distin, 1985 FK Letowski, PA Distin Platinum and palladium recovery from spent catalysts by aluminum chloride leachingHydrometallurgical recovery/recycling of platinum by the leaching
Full article: Benign recovery of platinum group metals from spent

It is demonstrated that with addition of small amounts of an oxidizing agent, deep eutectic solvents can act as excellent leaching media for the quantitative extraction of platinum group metals Despite its inertness towards acidic and oxidizing agents, Rh can be leached in a considerable amount which can be further increased by physical pretreatment of the2019年11月26日· Compared with traditional cyanide leaching and aqua regia dissolution, more environmentally friendly leaching methods have been developed in recent years, including chlorination Kim E, et al Leaching of platinum group metals (PGMs) from spent automotive catalyst using electro‐generated chlorine in HCl solution J Chem废催化剂中铂族金属回收现状与研究进展 USTB
Direct leach approaches to Platinum Group Metal (PGM) ores

2015年7月31日· Platinum Group Metals (PGMs), often with associated gold, too refractory to direct cyanide leaching even after ﬁne grinding The refractoriness of precious metal ores/concentrates to convenKeywords: PGMs, heap leaching, lowgrade ore concentrate, cyanide, thermophiles, bioleaching 1 Introduction During the milling and flotation of platinum group metal (PGM) concentrates, particularly of Upper Group 2 (UG2) ores, cleaning flotation can often deliver both a highgrade and a low gradeA conceptual flowsheet for heap leaching of platinum group metals
(PDF) Potential Processing Routes for Recovery of Platinum Group Metals

2017年11月6日· This study reports on the microwaveassisted leaching behavior of platinum group metals (PGMs) and light rare earth elements (LREEs) from two representative endoflife automotive ceramic catalyst我国铂族金属（Platinum group metals, Kuczynski R J, Atkinson G B, Walters L A Hightemperature cyanide leaching of platinumgroup metals from automobile catalystsprocess development unit // Report of Investigations (United States Bureau of废催化剂中铂族金属回收现状与研究进展 USTB
Cyanide leaching chemistry of platinumgroup

1994年1月1日· Tempemture Cyanide Leaching of PlatinumGroup Metals From Automobile CatalystsProcess Development Unit BuMines RI 9428, 1992,11 pp Recovery of PGM from Virgin Automotive Catalysts byA method for recovering platinum group metals from a catalyst material comprises leaching the material with a cyanide solution at a temperature greater than about 100° C to form soluble platinum group metalcyanide complexes in solution Solids are removed from the resulting pregnant leach solution, and the pregnant leach solution is then heatedCyanide leaching method for recovering platinum group metals
Bioleaching of platinum, palladium, and rhodium from spent

2022年6月1日· Bioleaching of platinum group metals (PGM) from spent automotive catalyst (SAC) was studied using two mesophiles, Pseudomonas fluorescens and Bacillus megateriumLeaching studies under different conditions were carried out to investigate the formation of biocyanide and its role in PGM solubilisationSYNOPSIS The research presented in this paper investigated the practical aspects of the recovery of platinum group metals (PGMs) from a dilute cyanide leach solution containing base metals, in a manner similar to that used for gold extraction in a typical CIP process, and focuses on both the adsorption and elution stagesThe application of activated carbon for the adsorption and
Direct leach approaches to Platinum Group Metal (PGM) ores

2015年7月1日· Platinum Australia Limited (PLA) in conjunction with Lonmin Plc have developed the Panton process, in which lowgrade flotation concentrates are subjected to lowtemperature calcination followed by cyanide leaching at elevated temperature to dissolve the PGMs, gold and base metals as per the simplified flowsheet presented inComplexation/oxidation leaching is a favorable approach regarding economical and environmental purposes This technique is based on the ability of PGM to form stable aqueous complexes with ligands such as cyanide, halide, sulfite, and thiosulfate ions (Table I)5 Leaching PlatinumGroup Metals in a Sulfuric Acid/Chloride Solution MHHLeaching PlatinumGroup Metals in a Sulfuric Acid/Chloride
A new technique for extraction of platinum group metals by

2006年8月1日· Similarly, in the cyanide dissolution of platinum group metals, the reaction rate is proposed to be controlled by a surface chemical reaction Hightemperature cyanide leaching of platinum group metals from automobile catalysts — laboratory test Report of Investigations, vol RI9384, United States Bureau of Mines (1991)2006年8月1日· For flotation concentrates containing about 80 g/t Pt and Pd, after pretreating by pressure acid leaching, followed by two steps of pressure cyanide leaching, up to 90–94% Pt and 99% PdA new technique for extraction of platinum group metals by
Recovery of platinum from spent automotive catalyst based on

2022年12月28日· This was followed by two stages of pressure cyanide leaching under the optimum conditions of liquidtosolid ratio of 4:1, temperature of 160 Yakoumis I, Moschovi A, Panou M, Panias D Singlestep hydrometallurgical method for the platinum group metals leaching from commercial spent automotive catalysts J Sustain Metall 年1月6日· Platinum Group MetalsPlatinum group metals (PGMs) play a significant role in the manufacturing of catalysts, super alloys, electronics, Cyanide leaching of PGMs requires special equipment as well as proper management of the toxic waste generated which may lead to severe environmental mercial Processes for the Extraction of Platinum Group Metals