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No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
The continental flood basalts of the East Greenland volcanic rifted margin were extruded during continental breakup above the ancestral Iceland mantle plume at 55 Ma. Three distinct magma types, the low-Ti, high-Ti and very high-Ti series (LTS, HTS and VHTS respectively), are found intercalated in the ~6-km-thick Plateau Lava sequence. Incompatible trace elements indicate …
The thermodynamics and kinetics of high-temperature gas/metal reactions are important for the processing and application of the group IVa, Va, VIa and VIIa refractory metals—Zr, Hf V, Nb, Ta, Mo, W…
The necessity, economics, and sustainability of recycling platinum-group metals (PGMs) from spent automotive catalysts (SAC) have stimulated the emergence of many relevant treatment technologies.
Ruthenium shows a particular behaviour in comparison with the other platinum group metals, which results in a modification of several macroscopic properties of the glass.
A new approach to recover platinum-group metals from spent catalytic converters via iron matte. Author links open overlay panel Mehmet Hakan ... Dong et al. (2015) summarized that the flux ratio is a key factor in the behavior of the PGM particles in the collector metal. In this section, the highest PGM recovery rates were observed at a ...
Semantic Scholar extracted view of "Geochemical behaviour of platinum-group elements (PGE) in particulate emissions by automobile exhaust catalysts: experimental results and environmental investigations" by F. Zereini et al.
Much of the variation in Behaviour of Platinum-group elements 3599 Table 1. PGE abundances for komatiites and peridotites. Sample Komatiites WAP46 909.0 Mineralised 94-077 Unmineralised Peridotites 2642 2669 2700 2728 Average of two Genalysis, Perthb Sylvester & Bennettc Average of three One analysis only Mitchell & Keaysd One analysis only ...
The platinum group element (PGE) composition of a suite of anhydrous spinel peridotite xenoliths from five different localities in eastern China were determined in order to evaluate the geochemical behaviour of these elements during mantle processes. ... Sulphur isotope systematic and platinum-group element behaviour in REE-enriched metasomatic ...
The partitioning behavior of platinum group elements in magmas is critical for their use as tracers of planetary accretion and in understanding magmatic sulfide deposits. Here we use laboratory ...
Nickel-copper and platinum group element (Ni-Cu and PGE) mineralization is typically associated with mafic and ultramafic rocks in layered mafic-ultramafic intrusions, magma conduits, or lava ...
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 ... the partition behavior of PGE between both arsenide and sulfide melts, particularly in the case of IPGE (i.e., Os, Ir, and Ru). Wood (2003) estimated a minimum partition
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 …
The synthesis process hence introduced variables that may impact PGM behaviour. Platinum Group Mineral variability in terms of speciation and grain size is expected in Platreef ore (Carelse, et al., 2020). These variables should be considered to fully understand the flotation behaviour of the PGM species.
ELSEVIER The Science of the Total Environment 206 (1997) 137-146 the Science of the Total Environment |~md Jou~al for SnUflR~h into the Envlrowent ~d Its Relstlop~ldp wtlh Man Geochemical behaviour of platinum-group elements (PGE) in particulate emissions by automobile exhaust catalysts: experimental results and environmental investigations Fathi …
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, …
The Platinum Group Elements (PGE: Osmium, Iridium, Ruthenium, Rhodium, Platinum, and Palladium), also known as platinum group metals and platinoids, are transition …
The extraction process routes to recover high purity of platinum group elements are also reviewed. The classification briefly describes the different types of ore deposits. The mineralogical analysis gives a general idea about the distribution and behavior of the platinum group element ores; also it helps to choose the beneficiation techniques.
This study also provides additional evidence that the behavior of Pt in sulfide liquids is influenced by thermodynamic conditions and As, and suggests a potential for Pt-rich sulfide ores exploration in the Zhengziyanwo deposit. ... Platinum-group elements (PGE) are widely used in tracing various geological processes, such as the origin and ...
Platinum-group element (PGE) geochemistry may be used to constrain the timing of sulfide saturation in magmas, which influences the Cu and Au fertility of evolving magmatic systems. …
Rhodium (Rh) is present at the Earth's surface at ultra-trace concentrations (0.06 ng g); however, its use in catalytic converters has increased its deposition nearby traffic pressure and therefore the interest in analytical techniques for Rh determination has increased in the recent years. In this study we propose an improvement of Rh measurement by adsorptive voltammetry applying …
The six platinum-group metals are ruthenium, rhodium, palladium, osmium, iridium, and platinum.They have similar physical and chemical properties, and tend to occur together in the same mineral deposits. [2] However, they can be further subdivided into the iridium-group platinum-group elements (IPGEs: Os, Ir, Ru) and the palladium-group platinum-group …
'Platinum Group Elements' published in 'Encyclopedia of Geochemistry' Three radiogenic isotope decay systems include the PGE as a parent element (107 Pd → 107 Ag), daughter element (187 Re → 187 Os), or both (190 Pt → 186 Os).A key feature of these systems is that they track the unique behavior of the PGE during planet formation and differentiation …
Abstract The paper considers the current state of Platinum Group Elements (PGEs) geochemistry in the ocean. The behavior of PGEs in the aquatic environment is defined by their oxidation state, the ability to change it, and complexation. The difference in chemical properties leads to PGEs fractionation in the ocean. This is their characteristic feature, along with their …
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 glasses. During the …
Behaviour of the PGEs and Re vary, with Os abundances showing a broad negative correlation with Al 2 O 3, Ir and Rh showing no correlation, ... Platinum-group element and Re analyses of both whole rock and minerals indicate that for fertile mantle the PGEs do not significantly partition into silicate phases or spinel. Approximately 20–80% of ...
Platinum group metals (PGMs), which have high melting temperatures and high chemical durability, are widely used as catalysts and electronic materials. It is important to develop their recycling processes in order to create a sustainable utilisation of the PGM resources. In high-temperature extractive processes with slag treatment, however, some …
A commercial pyrometallurgical process for the extraction of platinum-group metals (PGM) from a feedstock slag was analysed with the use of a model based on computational fluid dynamics. The results of the modelling indicate that recovery depends on the behaviour of the collector phase.
Dissolution behaviour of platinum group metals into molten slags Kazuki Morita Institute of Industrial ScienceThe University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan Correspondence [email protected]
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 187Os/188Os varying from 0.11973 …
Contradictory information on the behaviour of gold, silver, and platinum group metals during the pyrometallurgical processing of copper-sulphide and copper-nickel concentrates is presented in ...
