Recovery of Platinum Group Metals from Leach …

Tshentu, Z.R. Recovery of Platinum Group Metals from Leach Solutions of Spent Catalytic Converters Using Custom-Made Resins. Minerals 2022, 12, …

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AECI Mining: Innovating reagents for beneficiation

Coal Diamonds & Gemstones Gold Magazine Articles Platinum Group Metals. ... These reagents play a vital role in the extraction and processing of minerals, and AECI Mining Chemicals is renowned for its precision in manufacturing and delivering them. One of its standout offerings is the on-site reagent management system, which ensures …

Recovery of dissolved platinum group metals from copper …

Increasing the reagent quantity and temperature did, however, also result in increased copper and nickel co-precipitation. ... producers utilise multiple leaching stages to recover nickel and copper by-products while producing a high grade platinum group metal (PGM) concentrate from nickel–copper converter matte. ...

Determination of platinum group elements and gold in …

Concentrations of some platinum group elements, namely Pt, Pd, Rh and Ru, in volcanic fluids were investigated [3]. Condensed samples in three different matrices were prepared for analysis. These were sodium hydroxide and sulfuric acid solutions, and elemental sulfur. Sulfur samples were dissolved in Teflon bombs.

On the path of recovering platinum-group metals and …

Platinum-group metals are widely used in many industrial sectors; their popularity is attributed to their chemical inertness to various chemical reagents and their excellent catalytic properties (Fogg and Cornellisson, 1993).

Flotation of Platinum Group Elements Ores: A Review

Platinum-group elements (PGE), gold, and silver have occupied a special position and considerable economic importance in the world's mineral history (Potts 1992). ... of platinum group element deposit types and their mineralogical characteristics create a challenge to choose a proper reagent suite. The present article critically discusses all ...

The use of electrochemical measurements in the flotation of a platinum …

In platinum group mineral (PGM) bearing sulphide ores from the Bushveld complex, South Africa, the combined sulphide grade is typically less than 1%. ... These reagents were supplied by Senmin and were used as received. Acrol IMP4 (guar gum) supplied by Trohall was used as the depressant. All batch flotation tests were conducted …

Electrochemical interactions of some platinum group …

The mode of occurrence of platinum-group minerals ranges from being predominantly associated with base-metal sulphides (either locked within, or at the grain boundaries of, sulphide minerals) to ...

Potential Processing Routes for Recovery of …

Platinum group metals (PGMs), including palladium, play a pivotal role in various industries due to their unique properties. ... The nano flotation reagent was characterized using Fourier ...

Hydrometallurgical recovery of platinum-group metals from …

Platinum group metals (PGMs), being rare and very valuable, fall into this demand, and the catalytic converters that contain them are recognized as one of the main sources. ... Stripping phases were arranged using the following reagents: Thiourea (99%, Sigma-Aldrich); Malonic acid (ReagentPlus®, 99%, supplied by Sigma-Aldrich); NH 3 …

Potential Processing Routes for Recovery of …

Significant variability of platinum group element deposit types and their mineralogical characteristics create a challenge to choose a proper reagent suite.

Transmetalation: a fundamental organometallic reaction …

However, attempts to apply this to the halides of copper, silver, and platinum were unsuccessful. ... In general, these methods utilize a transmetalation step in which a main group organometallic reagent transfers an alkyl or aryl group to the transition metal catalyst. In turn, the main group organometallic species applied is also typically ...

Investigating the recoveries and grades of individual platinum group …

An extended reagent strategy is required to address the individual elements that make up the production basket for Sibanye Stillwater. For major contributing elements - platinum, palladium, and rhodium - the aim is to increase elemental recovery at a higher, or similar grade compared to the current reagent setup.

Flotation of platinum group metal ore materials

Provided is a method involving flotation of a feed of platinum group metal ore material to prepare a platinum group metal concentrate during mineral processing operations. Prior to and/or during the flotation, a lead-containing activator reagent and a xanthate collector reagent are added to the slurry and during the flotation, an oxygen-deficient flotation …

US5542957A

Platinum group metals and rhenium are extracted from their elemental state, complex ores, and other materials such as catalysts by leaching them with a solution containing ammonium halogen salts--iodide and bromide in the presence oxygen and/or sulfuric acid. The invented process is particularly effective for spent catalysts containing precious …

A mineralogical perspective on the recovery of platinum …

Mineralogy and mineral chemistry of detrital heavy minerals from the Rhine River in Germany as evidence to their provenance, sedimentary and depositional …

Flotation Reagents by Ore | Syensqo

Advanced Solutions for Mineral Processing. Used extensively for the flotation of sulfide minerals, Syensqo's flotation mining reagents are well-suited for the recovery of precious and base metals, such as gold, silver, platinum group metals, nickel, cobalt, lithium, molybdenum, phosphate, polymetallics, and copper.

Determination of platinum group elements and gold in …

The platinum group elements are pre-concentrated and separated from a large amount of matrix elements by Te co-precipitation. The detection limit of this method is 1–9 pg g−1 when 10 g of sample are weighed and 10 mL is the final volume used. Results obtained for the reference materials, WGB1,SARM7 and GBW07288-GBW07294, are in agreement ...

On the path of recovering platinum-group metals and …

Platinum-group metals are widely used in many industrial sectors; their popularity is attributed to their chemical inertness to various chemical reagents and their excellent catalytic properties (Fogg and Cornellisson, 1993).They are used in chemical, automotive, refining, glass, dentistry, electronic, electrical, photovoltaic, fuel cell, …

Evaluation of alternative reagent schemes for the flotation of platinum …

DOI: 10.1016/S0892-6875(03)00240-1 Corpus ID: 96369461; Evaluation of alternative reagent schemes for the flotation of platinum group minerals from various ores @article{Bulatovic2003EvaluationOA, title={Evaluation of alternative reagent schemes for the flotation of platinum group minerals from various ores}, author={Srdjan M. …

Single-Step Hydrometallurgical Method for the Platinum Group …

Abstract Platinum group metals (PGMs) are considered critical raw materials, thus their recycling and re-use is of outmost importance. Among the PGMs, platinum (Pt), palladium (Pd) and rhodium (Rh) are the basic metals used in catalytic converters. Concerning the stringent EU standards for emission control imposed to car …

Palladium on Carbon (Pd/C) for Catalytic Hydrogenation of …

Catalytic Hydrogenation of Alkenes With Pd/C (And Friends) Alkenes (and alkynes) will undergo addition of hydrogen (H 2) in the presence of a metal catalyst such as Pd, Pt, Ni, or Rh.; These metals are typically finely divided and adsorbed on the surface of a high surface-area material such as activated carbon (most common) or alumina (Al 2 O …

Solvent Extraction as a Method of Recovery and Separation …

Platinum group metals (PGMs) are a group of metals with high market value and low prevalence in the Earth's crust. Physically, they are grayish-white metals …

Platinum-Group Element

Platinum Group Metals: Alloying, Properties, and Applications. M. ElGuindy, in Encyclopedia of Materials: Science and Technology, 2001 1 Chemical Properties of PGM. PGM are resistant to attack by common aqueous chemical reagents. However aqua regia (a 3:1:1 mixture of concentrated hydrochloric and nitric acids and water) readily …

An electrochemical investigation of Platinum group …

An investigation into electrochemical interactions between platinum group minerals and xanthate: Voltammetric Study M Tadie, K. C. Corin, J. G. Wiese, M. Nicol, C. T. O'Connor Minerals Engineering 70 (2015) 148–155 Electrochemical interactions of some platinum group minerals with flotation reagents

Flotation of Platinum Group Elements Ores: A Review

Platinum-group minerals are usually beneficiated by flotation or gravity separation followed by flotation. Due to poor liberation characteristics and interstitial attachment of these minerals with ...

What is a group reagent? Name the group reagents …

Group reagent for II, III and IV are :-. 1. In group II, cations are P b 2 +, C u 2 +, A s 2 + and group reagent is H 2 S in the presence of dil. H C l.

Extraction of Platinum Group Metals | IntechOpen

About 80% of the worlds' reserves for platinum group metals (PGMs) are in South Africa's Bushveld Igneous Complex. Processing of PGM involves comminution, flotation, smelting, converting, base metals refinery and precious metals refinery. Due to increasing chrome content in the feed and the challenges associated with operating high …

Nano-Silica based mineral flotation frother: Synthesis

The beneficiation of platinum group metals (PGMs) from pristine (unweathered) sulfide ores has conventionally been conducted through froth flotation, which typically achieves platinum recoveries ...

Platinum Group Metals and Compounds

Platinum Group Metals and Compounds - Renner - - Major Reference Works - Wiley Online Library. Other versions of this article. Hermann Renner, Günther …

Direct leach approaches to Platinum Group Metal (PGM) …

Platinum group metals are conventionally recovered from high-grade concentrates (typically assay of 200 to over 2000 g/t PGM with 0.4–2.8% Cr 2 O 3) by the traditional matte–smelting–refining technique depicted in Fig. 2 (Cole and Joe Ferron, 2002).Ore is first ground by conventional multistage crushing and ball milling, or by semi …

Nano-Silica based mineral flotation frother: Synthesis and flotation …

The recovery of platinum group elements (PGEs) from waste is of high importance due to losses incurred during their processing, high input costs and diminishing primary resources. The recovery of Pd(II), Ir(III) and Rh(III) by bentonite functionalised with 3-aminopropyl(diethoxy)methylsilane (APDEMS) was investigated.

THERMOCHEMICAL TREATMENT OF PLATINUM …

The first stage involves solid-solid thermochemical treatment of PGM tailings in the presence of ammonium sulphate ((NH4)2SO4), a widely available, low-cost, recyclable chemical agent. The chemical affinity between (NH4)2SO4 and major elements present in the tailings leads to the formation of water-soluble sulphate-metal species.

Benzene methylation by acetic acid with platinum-loaded …

In this work, we examined the methylation of benzene to form toluene by using acetic acid as a promising methylation reagent with platinum-loaded TiO 2 photocatalysts (Pt/TiO 2) ... Direct introduction of OH group to sp 2-carbon on platinum-loaded titanium oxide photocatalyst. Top. Catal., 57 (2014), pp. 984-994. CrossRef View …

Determination of platinum group elements by inductively

A method was developed for the determination of trace platinum group elements (PGEs) by nickel sulfide fire assay inductively coupled plasma-mass spectrometry (ICP-MS). With isotope dilution, the improved technique gives precise Os content data. Through the purification of the reagent nickel oxide, reagent blank was greatly reduced. …