• Quick Search:

platinum group concentration

Comments

Chapter 6.11 Platinum World Health Organization

Platinum, together with the other platinum group metals, is present at low levels in the lithosphere, with an average platinum concentration of 0.001–0.005 mg/kg (4). Concentrates of economic importance are present in the Transvaal, South Africa, in Siberia and in the Urals at up to 500 mg/kg, and in Sudbury, Canada, in copper-nickel sulfide ores at an average concentration of 0.3 mg/kg. The

get price

Concentration of platinum-group elements by magmatic

These observations, as well as the association of the J-M reef at the first significant stratigraphic break in the Cl/(Cl + F) ratio of apatite and the relatively high solubility of Pt and Pd as aqueous Cl complexes, are consistent with the formation of the J-M reef by exsolution of Cl- and volatile-rich fluids from footwall intercumulus liquids which leached and transported ore components

get price

Determination of platinum group metals in dust, water

16/05/2020 The purpose of this study was to determine the concentration of platinum group metals (PGMs) emitted with cement dust on a dust suppressed roadway next to a cement factory in Waterberg, South Africa. The concentrations of PGMs were determined using inductively coupled optical emission spectrometry. This region is well known for large reserves and mining of PGMs such as Pt, Rh, Ru

get price

Platinum Group Metal an overview ScienceDirect Topics

The adsorption of bromine species on platinum group metals depends on their concentration, the electrode potential, pH, catalyst crystal facet, surface defects, and temperature. Thus, not all catalysts can be used for both hydrogen evolution (in electrolyzers) and hydrogen oxidation (in fuel cells). What is sought are lower cost and stable catalysts for both hydrogen and bromine electrodes

get price

Review Methods for the determination of platinum group

Anthropogenic emission of platinum group elements (PGEs) from the abrasion of automotive catalytic converters into the environment has significantly increased. However, the concentration level of these PGEs (i.e. Pd, Pt, Rh) is still very low in the nature. Accordingly, their determination and speciation in various environmental

get price

Extraction and Refining of the Platinum Metals Johnson

From this stage onwards the concentration of the platinum group metals is more rapid and the processes entirely chemical. First the slime is subjected to roasting and leaching attacks to remove the last of the copper, nickel, iron and sulphur. This produces an enriched slime running approximately 65 per cent of the platinum group metals and gold. At this point the platinum-bearing gravity

get price

THE PRIMARY PRODUCTION OF PLATINUM GROUP METALS (PGMs)

The six platinum group metals (PGMs) occur together in nature alongside nickel and copper. Mineable deposits of PGMs are very rare, with annual production amounting to around 400 tonnes, several orders of magnitude lower than many common metals. Due to their economic values and higher quantities, platinum and palladium are the most important metals of the PGMs. The other four, rhodium

get price

Separating the Platinum Group Metals by Liquid-Liquid

Refining of platinum group metals consists of several stages: I. Ore concentration by physical techniques such as flotation 2. I’vrometallurgical concentration producing copper-nickel sulphide matte, and hydro- metallurgical concentration 3. Final refining to

get price

A review of methods of separation of the platinum-group

01/12/2005 The platinum-group metals (PGM) are technologically important metals which are becoming increasingly relevant in reducing harm to the environment. The separation and purification of the PGM is largely carried out by exploiting differences in the chemistry of their anionic chloro-complexes. These differences include ligand substitution kinetics, ammonium salt solubility, ion-exchange

get price

OVERVIEW OF PGM PROCESSING Anglo American

PLATINUM Platinum Group Metals (PGMs) are recovered through underground and open pit mining from poly-metallic sulphide ores containing PGMs, Nickel, Copper and other metals: • Platinum (Pt), Palladium (Pd), Rhodium (Rh) and Ruthenium (Ru) are the most prevalent of the six PGMs, with Iridium (Ir), and Osmium (Os) found in much smaller quantities • Gold is often associated with PGM deposits

get price

Concentration of the Platinum-Group Elements in South

The platinum-group elements, Re and Au were determined by instrumental neutron activation analysis (INAA) at the University of Quebec at Chicoutimi, after pre-concentration in a Ni-sulphide bead from 50 g of rock powder. Sample irradiation was carried out at the École Polytechnique in Montreal in a SLOWPOKE II reactor.

get price

Concentrations of Platinum Group Elements in 122 U.S. Coal

In order to accurately determine the concentration of the platinum group elements (PGE) in coal, additional data were obtained by inductively coupled plasma mass spectroscopy, an analytical method having part-per-billion (ppb) detection limits for these elements. These data indicate that the PGE in coal occur in concentrations on the order of 1 ppb or less.

get price

Concentration of Platinum Group Elements during the Early

Concentration of Platinum Group Elements during the Early Earth Evolution: A Review*() Arkady Pilchin 1, Lev Eppelbaum 2. 1 Universal Geoscience and Environment Consulting Company, Willowdale, Ontario, Canada. 2 Department of Geosciences, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel.

get price

The concentration of platinum-group elements and gold in

02/04/2012 We have determined the concentrations of the platinum-group elements and gold in 111 mantle xenoliths from more than 20 kimberlite pipes in southern Africa and the Karelian craton, Fennoscandian Shield, with the aim to constrain the composition of the Archean- early Proterozoic primitive mantle. Average noble metal contents of the southern African peridotite

get price

Determination of platinum group metals in dust, water

16/05/2020 The purpose of this study was to determine the concentration of platinum group metals (PGMs) emitted with cement dust on a dust suppressed roadway next to a cement factory in Waterberg, South Africa. The concentrations of PGMs were determined using inductively coupled optical emission spectrometry. This region is well known for large reserves and mining

get price

Platinum group

The platinum-group metals (abbreviated as the PGMs; alternatively, The huge volume of nickel-copper ore processed makes this extraction profitable in spite of its low concentration in these ores. Production. Process flow diagram for the separation of the platinum group metals. The production of individual platinum group metals normally starts from residues of the

get price

Processes leading to concentration of platinum-group

S ESSION 2.PGE MINERALIZATI ON IN MAFIC-ULTRAMAFIC INTRUSIONS OF R USSIA: GEOLOGY AND PETROGENESIS 59 PROCESSES LEADING TO CONCENTRATION OF PLATINUM-GROUP ELEMENTS IN CHROMITE RICH ROCKS Barnes, S-J. 1,Page, P.,Prichard, H.M2., Zientek, M.L.3 & Fisher, P.C.2 I Sciences de la Terre, Universite du Quebec

get price

Extraction and separation of multiple platinum group

01/12/2017 In this study, palladium (II), platinum (IV), rhodium (III) and iridium (IV) were sequentially separated with 1-hexyl-3-methylimidazole-2-thione (HMImT) from aqueous hydrochloric acid media by adjustment of hydrochloric acid concentration or in the presence of tin (II) chloride using environmental-friendly microextraction method. It is the first time to use

get price

OVERVIEW OF PGM PROCESSING Anglo American Platinum

PLATINUM Platinum Group Metals (PGMs) are recovered through underground and open pit mining from poly-metallic sulphide ores containing PGMs, Nickel, Copper and other metals: • Platinum (Pt), Palladium (Pd), Rhodium (Rh) and Ruthenium (Ru) are the most prevalent of the six PGMs, with Iridium (Ir), and Osmium (Os) found in much smaller quantities • Gold is often

get price

Platinum Element information, properties and uses

The very properties of platinum that had made it so hard to work with became valued and platinum was used for lab equipment, and other applications where its broad chemical resistance was required. Johnson Matthey perfected the techniques of separating and refining the platinum group metals and in 1879 Matthey produced a standard metre measure made of a platinum

get price

Concentration of the Platinum-Group Elements in South

The platinum-group elements, Re and Au were determined by instrumental neutron activation analysis (INAA) at the University of Quebec at Chicoutimi, after pre-concentration in a Ni-sulphide bead from 50 g of rock powder. Sample irradiation was carried out at the École Polytechnique in Montreal in a SLOWPOKE II reactor.

get price

Concentration of platinum-group elements by magmatic

These observations, as well as the association of the J-M reef at the first significant stratigraphic break in the Cl/(Cl + F) ratio of apatite and the relatively high solubility of Pt and Pd as aqueous Cl complexes, are consistent with the formation of the J-M reef by exsolution of Cl- and volatile-rich fluids from footwall intercumulus liquids which leached and transported ore components

get price

Concentrations of Platinum Group Elements in 122 U.S. Coal

In order to accurately determine the concentration of the platinum group elements (PGE) in coal, additional data were obtained by inductively coupled plasma mass spectroscopy, an analytical method having part-per-billion (ppb) detection limits for these elements. These data indicate that the PGE in coal occur in concentrations on the order of 1 ppb or less.

get price

The concentration of the platinum-group elements in south

The concentration of the platinum-group elements in south African komatiites: Implications for mantle sources, melting regime and PGE Fractionation during crystallization. Journal of Petrology 44 (10),pp. 1787-1804. 10.1093/petrology/egg059

get price

Platinum group

The platinum-group metals (abbreviated as the PGMs; alternatively, The huge volume of nickel-copper ore processed makes this extraction profitable in spite of its low concentration in these ores. Production. Process flow diagram for the separation of the platinum group metals. The production of individual platinum group metals normally starts from residues of the

get price

Processes leading to concentration of platinum-group

S ESSION 2.PGE MINERALIZATI ON IN MAFIC-ULTRAMAFIC INTRUSIONS OF R USSIA: GEOLOGY AND PETROGENESIS 59 PROCESSES LEADING TO CONCENTRATION OF PLATINUM-GROUP ELEMENTS IN CHROMITE RICH ROCKS Barnes, S-J. 1,Page, P.,Prichard, H.M2., Zientek, M.L.3 & Fisher, P.C.2 I Sciences de la Terre, Universite du Quebec

get price

THE ENVIRONMENTAL PROFILE OF PLATINUM GROUP METALS

The six platinum group metals (PGMs) platinum, palladium, rhodium, ruthenium, iridium and osmium occur together in nature alongside nickel and copper. Along with gold and silver, the PGMs are precious metals and are very rare elements in the Earth’s crust. The annual production of PGMs amounts to around 400 tonnes, several orders of magnitude lower than many

get price

Recovery of Platinum Group Metals from Spent Catalysts

07/05/2018 The recovery of platinum group metals (PGMs) from spent automobile catalysts is a difficult process because of their relatively low contents in the scrap. In this study, to improve the efficiency of the existing recycling techniques, a novel physical concentration method involving treatment with FeCl2 vapor has been examined. The reactions occurring between typical

get price

Platinum Element information, properties and uses

The very properties of platinum that had made it so hard to work with became valued and platinum was used for lab equipment, and other applications where its broad chemical resistance was required. Johnson Matthey perfected the techniques of separating and refining the platinum group metals and in 1879 Matthey produced a standard metre measure made of a platinum

get price

Magmatic Ore Deposits in Layered Intrusions—Descriptive

The platinum group elements, their atomic numbers, chemical symbols, and value .. 44 Table 2. Tonnage and grade characteristics of reserves and resources associated with reef-type platinum-group elements deposits. Past production is not included. Large igneous province (LIP) names and ratings from Ernst and

get price
  • active gold mines in the us
  • gold mining in ghana actors alliances and power
  • butuh crusher bandung
  • stone crusher shibang china crusher price
  • available stone crushers in kenya
  • Jaw Crusher Salesmall
  • feldspar rock crusher feldspar rock crusher for sale
  • capacity of 7 simons cone crusher
  • segmentation of grinding and grinding system for cement plant
  • grinding balls grinding mill
  • high performance pew series cyanite crushing plant
  • German Technical Cone Crusher Supplier Price
  • high quality intelligent crusher
  • dl mobile crusher
  • grinder safety administration
  • main appliion of hammer mill
  • jhamarkotra rock phosphate mines
  • problems facing mining industry
  • iron ore flotation plant from china
  • glaucophane raymond roller mill supplier
  • manufacture refine gold equipment
  • welline high energy small ball mill grinding
  • wiring diagrams for hydraulic cone crushers
  • list of mining quarry in oyo state coal surface mining
  • bead grinding machines
  • crusher for sale in south africa low price
  • allis chalmers model 500 cone crusher
  • hanson quarry crushing hanson quarry customers
  • mineral grinding mill from china
  • india manufacturers ton impact crusher