platinum group behavior

Platinum-group element distribution in the Main Zone and …

The Bushveld Complex of South Africa (Fig. 1) contains the world's largest resource of platinum-group elements (Vermaak, 1995) and a large portion of the world's V and Ti resources (Goldberg et al., 1992).Most of the platinum-group element (PGE) resources are found in narrow layers, known as reefs, in the lower third of the intrusion, …

Temporary Employment & Human Resources | Platinum Group …

Kim Wallace-Watler is Director of The Platinum Group Cayman Ltd. and founder of Intuitive Coaching, an HR Consultancy & Coaching practice. Whether corporate or personal, her 15+ years' experience in human resources management serves as the foundation of understanding people behavior and problem solving at all levels. Having worked with ...

Partitioning behavior of platinum group metals on the γ …

The partitioning behavior of platinum group metals (PGMs) on the γ and γ′ phases of Ni-base superalloys has been investigated with alloys containing 5 mass% Re and 1 at.% PGMs.

Platinum-Group Element

2.10.1 Introduction. The platinum group metals (PGMs) comprise 6 elements, which are platinum, palladium, rhodium, ruthenium, iridium, and osmium. These metals have high …

(PDF) Partition behavior of platinum-group elements …

The behavior of Pt, Pd, Ni and Cu in Se-sulfide system and the role of Se in platinum-group elements (PGE) fractionation have been experimentally investigated at temperatures between 1050 and 700 ...

Influence of refractory and platinum group metals on the …

c) The partitioning behavior of the refractory and platinum group elements between γ and γ҆ is shown by APT for the investigated alloys. For both, solvus temperature and volume fraction ( Fig. 8 a & 8b), a correlation with the partitioning behavior of the platinum group and refractory element is perceived.

A Review of the Behaviour of Platinum Group …

A Review of the Behaviour of Platinum Group Elements within Natural Magmatic Sulfide Ore Systems. January 2010. Platinum Metals Review 54 (1):26-36. …

(PDF) Partitioning behavior of Platinum Group Metals into …

The partitioning behavior of platinum group metals (PGM) into γ matrix and γ′ precipitates for γ′ precipitation hardening Ni-base superalloys has been investigated using electron probe X ...

Properties and behavior of the platinum group metals in …

Two types of platinum group metal particles were found in borosilicate nuclear waste glasses: needle-shaped RuO2 particles and spherical PdRhxTey alloys. They form a dense sediment of high electrical conductivity and relatively high viscosity at the bottom of the ceramic melting furnace. The sludge shows a non-Newtonian flow …

Implications of nano- and micrometer-size platinum-group …

The concentrations of platinum-group elements (PGE) and semimetal elements (As, Sb, Se, Te and Bi) in the base metal sulfides from the Yangliuping deposit were determined using Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICPMS). Mass balance calculation reveals that the base metal sulfides only contain <40 …

[PDF] A review of the behaviour of Platinum Group …

A review of the behaviour of Platinum Group Elements within natural magmatic sulfide ore systems @article{Holwell2010ARO, title={A review of the behaviour of Platinum Group Elements within natural magmatic sulfide ore systems}, author={David A. Holwell and Iain McDonald}, journal={Scopus}, year={2010}, volume={54}, pages={26-36}, url={https ...

Chemical behavior of platinum-group metals in oxide …

Abstract. Solubilities of platinum group metals (Pd, Rh, Pt) in several glasses were investigated by the use of optical absorption measurements. The concentrations of these ions in the glasses were determined by chemical analysis. The absorption cross-sections of the ions were determined by relating the absorption …

Platinum group element behaviour and thermochemical

Platinum group element behaviour and thermochemical constraints in the ultrabasic–basic complex of the Vizcaino Peninsula, Baja California Sur, Mexico. ... The fractionation of platinum-group element (PGE) displays evidence of erratic dispersion throughout the intrusion. PGE patterns of chromitites show high Ir and Ru contents, …

Redox behavior of platinum-group metals in nuclear glass

This study highlights the role of two platinum-group metals, ruthenium and palladium, in the redox equilibria of nuclear waste containment glass. Electrochemical measurements in simplified R7/T7 glass melts were used to develop a thermodynamic model of ruthenium redox equilibrium. The oxygen fugacity at equilibrium, corresponding …

Behavior of Platinum-Group Elements during Hydrous …

Primarily sourced from layered mafic intrusions, platinum-group elements (PGE: Os, Ir, Ru, Rh, Pt, and Pd) are typically found within chromitites and/or Ni-, Co-, and Cu-rich sulfide deposits [1, 2], placers associated with Ural-Alaskan and Aldan type complexes [3, 4], and ophiolitic peridotites [].In each of these occurrences, the majority of …

Oxidation of the platinum-group metals

This work was performed under Contract No. Nonr-2547(OO), NR 039–067, "High-Temperature Properties and Alloying Behavior of the Refractory Platinum-Group Metals", for the Office of Naval Research, U.S. Department of the Navy.The major features of this work were first reported in the Status Report of July 17, 1959, from Battelle Memorial …

Platinum group element (PGE) geochemistry to understand …

Platinum group elements (PGE: Os, Ir, Ru, Rh, Pt, Pd) are important geochemical and cosmochemical tracers. Depending on physical and chemical behaviour the PGEs are divided into two subgroups: IPGE (Ir, Os, Ru) and PPGE (Pd, Pt, Rh). Platinum group elements show strong siderophile and chalcophile affinity. Base metal …

Platinum-group element distribution in the Main …

Platinum-group element behavior in the lower part of the Upper Zone, eastern Bushveld Complex—implications for the formation of the Main Magnetite Layer

Adsorption properties and behavior of the platinum group …

To separate platinum group metals (PGMs) from high level liquid waste (HLLW), a novel silica-based (Crea + TOA)/SiO 2 –P adsorbent was synthesized by impregnating Crea (N′,N′-di-n-hexyl-thiodiglycolamide) and TOA (trioctylamine) two extractants into the macroporous SiO 2 –P support with a mean diameter of 60 μm. …

Redox behavior of platinum-group metals in nuclear glass …

This study highlights the role of two platinum-group metals, ruthenium and palladium, in the redox equilibria of nuclear waste containment glass. Electrochemical measurements in simplified R7/T7 ...

Partition behavior of platinum-group elements during the segregation …

Platinum-group elements (PGE) have shown to have a strong affinity for arsenide melts, but little is known about their partitioning behavior between arsenide and sulfide melts. In this study, we experimentally determine the partition coefficients of PGE (Pt, Pd, Ir, Ru, and Os) between both types of melt in As-saturated sulfide systems …

Partition behavior of platinum-group elements during the …

Open System Re-Os Isotope Behavior in Platinum-Group …

In this short communication, we present preliminary data on the Re-Os isotopic systematics of platinum-group minerals (PGM) recovered from different horizons in the Falcondo Ni-laterite in the Dominican Republic. The results show differences in the Os-isotope composition in different populations of PGM: (i) pre-lateritic PGM yield …

Thixotropic behavior of a glass melt of nuclear interest …

Platinum group metals (PGM) particles are generally found in nuclear borosilicate glasses resulting from the melting, at 1200 °C, of a glass precursor and fission products issued from spent fuel reprocessing. Contrary to some other elements, such as iron, nickel, and chromium, these particles are not incorporated chemically in molten …

Pyrometallurgical Recovery of Platinum Group Metals from …

As an important secondary resource with abundant platinum group metals (PGMs), spent catalysts demand recycling for both economic and environmental benefits. This article reviews the main pyrometallurgical processes for PGM recovery from spent catalysts. Existing processes, including smelting, vaporization, and sintering processes, …

Influence of refractory and platinum group metals …

The effect of alloying with refractory and platinum group elements on the γ′ solvus temperature and volume fraction can be explained by the differences in the γ′/γ …

Platinum-Group Elements—So Many Excellent Properties

The platinum-group elements (PGE) include platinum, palladium, rhodium, ruthenium, iridium, and osmium. These metals have similar physical and chemical properties and occur together in nature. The properties of PGE, such as high melting points, corrosion resistance, and catalytic qualities, make them indispensable to many industrial applications.

Platinum Group Metals and Compounds

The article contains sections titled: 1. History 2. Properties 3. Occurrence 3.1. Abundance 3.2. Ores and Their Origin 3.3. Primary Deposits 3.4. Secondary Deposits 3.5. Recovery...

Platinum Group Elements Mineralogy, Beneficiation, and …

The melting behavior of Platreef and UG–2 platinum group metal (PGM) concentrates was studied under conditions typically found in the black top of PGM smelters.

Numerical Analysis of Platinum Group Particle Behavior in …

2,403. In the vitrification of high-level radioactive liquid wastes, platinum group particles originally included in the liquid wastes are mixed into molted glass and convected with the glass flow in vitrification melters. Though behaviors of the platinum group particles in the melters should be investigated to establish efficient melter ...