Pgm chromite fire assay

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Diversity of PGM Assemblages at Kraubath: A Case Study of Mantle-Derived Chromitites from the Eastern Alps, Austria Kreshimir N. Malitch1,2 and Vladimir V. Knauf2 1Institute of Geological Sciences, University of Le oben,Peter Tunner Str. 5, A-8700 Leoben, Austria 2NATI Research JSC, Otechestvennaya 3-3a, St.-Petersburg, 195030, Russia e-mail: [email protected];

The reef includes over 60% chromite (Merkle & McKenzie, 1994). PGM recovery is accompanied by the recovery of fine hydrophilic Cr 2 O 3. If present in amounts of over 1,5%, the chromite negatively impacts the ... Analysis of 6E PGM was carried out by fire assay, while the other elements were determined by ICP – OES (inductively coupled plasma

The six platinum group metals (PGM) are platinum Pt, palladium Pd, rhodium Rh, iridium Ir, ruthenium Ru and ... inclusions in nickel-copper sulphide minerals and chromite, and as flattened, rounded detrital grains in placer deposits ... Preferred analysis method1 Fire assay Fire assay Fire assay Fire assay Fire assay Fire assay Routine

Apr 18, 2018 The focus of field efforts will be detailed geologic mapping and lithogeochemical sampling designed to locate and define both bedded and chromite-related Cu-Ni-PGM mineralization to a degree sufficient to target drilling in year 2. All analytical work will include Pt+Pd+Au by fire assay and multi-element IPC-AES analysis with 4-acid digestion

The PGM assemblages in the analysed chromitite sample are dominated by Os-poor laurite and Os-Ir-(Ru) alloys. These PGM grains are euhedral and occur as inclusions in chromite crystals. They are interpreted as primary PGM formed at the high-T magmatic stage before or during chromite crystallization (e.g. Zaccarini et al., 2005)

platinum-group metals reported in this paper. In this method, fire-assay techniques are used to collect the Pt-Pd-Rh of the sample into a gold bead; this bead is . ... of materials and especially samples rich in chromite are more difficult to fire assay than routine gold ores

Dec 17, 2016 Fire Assay is the most common technique for analyzing precious metals was developed and refined almost to perfection before the 15th century (5). Government, mining and smelting companies, private analytical laboratories, universities, and geochemical exploration companies depend on fire assay techniques to produce accurate results

Corpus ID: 110301189; The systems engineering of automated fire assay laboratories for the analysis of the precious metals @inproceedings{Mcintosh2004TheSE, title={The systems engineering of automated fire assay laboratories for the analysis of the precious metals}, author={Keith Shearer Mcintosh}, year={2004} }

fire-assay technique using nickel-sulfide as the collector National Insitute of Metallurgy, South Africa, Report # 1371, p.1-16. Zereini, F., Skerstupp, B. & Urban, H. 1994. Comparison between the use of sodium and lithium tetraborate in platinum-group element determination by nickel sulphide fire-assay. Geostandards Newsletter, v. 18 p. 105-109

Jan 07, 2022 The graphic below represents a simplified view of precious metal prills obtained by a ‘fire assay’ procedure used in the analysis of a reef sample. Note, in reality the prill is minute in size. The weight of each prill is used to determine the percentage composition of

ICP-OES: Ferrochromium slags and chromite ores: Procedure for the dissolution of ferrochromium slags and chromite ores and analysis by ICP-OES (ASD-MET-OES-SP005); Fire Assay/ PGE Methods: The determination of Individual PGM’s (Pt, Pd Rh,Ru, Ir, Au i.e. 6E) after Nickel sulphide collection by Fire Assay and measurement by ICP-OES

Selective sulfation-roast-water leach process of a complex, chromite-rich Cu-Ni-PGM ore to dissolve water-soluble base metal sulfates contained therein was investigated as an alternative process to remove base metals prior to the extraction of precious metals. Ground run-of-mine ore (P 80 75 μm) was mixed with concentrated H 2 SO 4 (sulfating agent) and Na 2 SO 4 (dual

PGM and gold fire assay typically involves fusing a finely ground ore sample with a suitable flux, which is generally a lead oxide (litharge) based flux, in the presence of a reductant and at high temperatures ( 1200 C.). A reaction occurs that liberates the PGM and separation of the precious metals from the gangue is facilitated

Chromites are notably difficult to dissolve in most fluxes and if the chromite contains some PGM the possibility exists that not all the PGE will be recovered during fusion. In this work, shortcomings in published methods of analysis based on the nickel sulfide fire assay procedure were investigated and a new procedure developed based on the

Analytical techniques: the nickelsulfur fire assay technique, followed by SnCl 2 AE2H 2 O-Te co-precipitation (NiS-FA) Fire assay is a neoclassical technique

The six platinum group metals (PGM) are platinum Pt, palladium Pd, rhodium Rh, iridium Ir, ruthenium Ru and ... inclusions in nickel-copper sulphide minerals and chromite, and as flattened, rounded detrital grains in placer deposits ... Preferred analysis method1 Fire assay Fire assay Fire assay Fire assay Fire assay Fire assay Routine

Nickel Sulfide Fire Assay Collection Method Code PGM-MS25NS A 30g sample is fused with a mixture of soda ash, borax, silica, sulfur and nickel carbonate or nickel oxide at 1000 C to produce a nickel sulfide button. The button is weighed then milled to a fine powder before dissolution in hydrochloric acid