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Extraction of Platinum Group Metals IntechOpen

2018-2-21  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 chrome feed, alternative routes to smelting

Solvent extraction of platinum using amine based

2014-2-1  Tri-butyl phosphate (TBP) and tri-octylamine (TOA) can extract Pt and have been commercially used for platinum refining. However, the drawback of using TBP is the co-extraction of iron with Pt over a wide range of acid concentrations. The stripping efficiency of Pt from the organic phase is known to be rather low.

(PDF) Extraction of Platinum Group Metals

2018-7-4  The refining process undergoes a series of dissolution and precipitation stages or total leaching techniques. The solvent extraction process helps to separate the

Extraction and Refining of the Platinum Metals

only platinum producer in South Africa and the only major producer in the world whose prime activity is the extraction of the platinum metals. From the outset Johnson Matthey has been associated with Rustenburg, $rst in developing methods for the extraction of the platinum metals from these OTCS, and thereafter as smelters

How Is Platinum Extracted? Reference

2020-4-13  Because platinum is so rare, it must be extracted after being mined through a process that involves crushing it into incredibly small particles and separating these particles from one another.

Extraction and Stripping of Platinum from Hydrochloric

2014-12-25  By reductive stripping, Pt (IV) in the organic phase can be stripped in the form of platinum powders using hydrazine hydrate; at the same time [C 16 mim]Cl is regenerated in the organic phase. The mixed [C 16 mim]Cl/ [C 8 mim]PF 6 ionic liquids can be reused to extract Pt (IV).

(PDF) Commercial Processes for the Extraction of Platinum

2018-1-6  The extraction of platinum and rhodium from scrapped honeycomb autocatalyst into hydrochloric acid/aluminum chloride/nitric acid solutions is described.

Liquid-Liquid Extraction of Platinum from Chloride Media

2012-6-26  Platinum can be effectively extracted by DMDCHTDMA without addition of tin(II) chloride, since extraction percentages (%E) of 88% and 99% have been achieved from 6 M and 8 M HCl, respectively. Moreover, platinum can be successfully stripped through a

How Is Platinum Extracted From a Catalytic Converter? It

The platinum, which appears as a silvery, bronze color located on the outer surface of each piece of catalyst, can be picked and peeled off by hand or by using a flat-head screwdriver or pair of box cutters. The platinum normally flakes off in small pieces or nuggets.

Extraction and Stripping of Platinum from Hydrochloric

2014-12-25  Extraction and separation of multiple platinum group metals from hydrochloric acid solution with sole 1-hexyl-3-methylimidazole-2-thione using microextraction method. Hydrometallurgy 2017, 174,

Direct Extraction of Platinum Group Metals from Nitric

2018-2-15  Direct extraction of platinum group metals (PGMs) from nitric acid solutions by using the phase transition phenomenon of thermoresponsive poly(N-isopropylacrylamide) (PNIPAAm) were realized.The trivalent PGMs such as rhodium and ruthenium could be extracted onto PNIPAAm gel as the dissociated cationic complexes with hydrophobic soft donor ligands by controlling just temperatures

Extraction of platinum-group metals from chloride

Literature data are given on the extraction of platinum-group metals from hydrochloric acid solutions by salts of quaternary ammonium bases, as well as the authors’ data on the binary extraction of platinum metals from chloride solutions. The possibility is shown of using binary extractants based on quaternary ammonium bases (QABs) for efficient extraction and separation of platinum-group

(PDF) " PLATINUM EXTRACTION AND PURIFICATION, USES

" PLATINUM EXTRACTION AND PURIFICATION, USES AND ITS ENVIRONMENTAL IMPACTS "Offoro Kimambo. Platinum (Pt)Platinum (Pt) is a transition metal in Group 10 (VIIIB) of the periodic Platinum FactsThe annual supply of platinum is only about 130 tonswhich is equivalent to only 6% (by weight) of the total Western World's annual mine production of gold

Liquid-liquid extraction/separation of platinum(IV) and

2009-8-30  The percentage extraction of platinum(IV) and rhodium(III) increased with increase in acid concentration up to 8 mol L(-1). However, at 10 mol L(-1) HCl concentration, the extraction behavior was reversed, indicating the solvation type mechanism during extraction.

Platinum Exploration and Extraction

2002-4-3  Platinum (Pt), a very rare substance, is very less abundant than gold. It exists in very few commercially viable deposits on earth. Most of the platinum mining is carried out in three leading producing regions in South Africa, Russia, and North America.

platinum mining and extraction methods by Greg Campbell

2014-1-15  Platinum should platinum still be mined Platinum refining and issues platinum mining and extraction methods platinum description and uses Improved separation and refining procedures have become available for all of the precious metals. These commonly involve operations such as

Platinum Mining and Refining Education

Platinum ores such as sperrylite and cooperite may be mined when they are found in quantities that make extraction economically feasible. In other situations, platinum is obtained as a by-product when ores of other metals, such as copper and nickel, are refined. Modern Platinum Mining Techniques

The Properties and Applications of Platinum

2020-8-21  Anglo Platinum (Amplats), Norilsk Nickel and Impala Platinum (Implats) are the largest individual producers of platinum metal. Applications For a metal whose annual global production is a mere 192 tons, platinum is found in, and critical to the production of, many everyday items.

Platinum group chemical element group Britannica

Extraction and refining. The separation chemistry of the platinum-group metals is among the most complex and challenging of metal separations. A brief description of procedures for isolating the platinum-group metals is set forth below, followed by descriptions of assaying and scrap-refining techniques. Individual solubilization

Commercial Processes for the Extraction of Platinum

2018-1-6  Chen J, Huang K (2006) A new technique for extraction of platinum group metals by pressure cyanidation. Hydrometallurgy 82:164–171 CrossRef Google Scholar. 14. Eksteen JJ (2011) A mechanistic model to predict matte temperatures during the smelting of UG2-rich blends of platinum group metal concentrate.

Liquid-liquid extraction of platinum from acidic solutions

2011-11-30  Liquid-liquid extraction (LLE) of platinum is a most important topic in separation science. The platinum separation process is a challenging task to researchers. The present review article is the first discussion on LLE of platinum and the review pertains to the literature review on the LLE of platinum

Liquid-liquid extraction of platinum(II) with cyclic

2000-4-28  The liquid-liquid extraction of platinum(II) with 12-, 14- and 16-membered cyclic tetrathioethers from chloride solution was studied. Bromocresol Green ion as a counter anion and 1,2-dichloroethane as an extraction solvent were used. The effect of thiourea on the extraction rate of platinum(II) was examined.

Platinum Exploration and Extraction

2002-4-3  Platinum (Pt), a very rare substance, is very less abundant than gold. It exists in very few commercially viable deposits on earth. Most of the platinum mining is carried out in three leading producing regions in South Africa, Russia, and North America.

Extraction Studies in the Platinum Metals Group.

2020-10-13  platinum metals group utilizing extraction methods. Osmium and ruthenium were excluded since they are easily separated from plati­ num, palladium, rhodium and iridium as the volatile tetroxides. The distribution coefficients for platinum, palladium, rho­ dium and iridium were measured in a hydrochloric acid-sodiura chloride-

PGM Platinum Mining & Extraction 911 Metallurgist

2016-2-16  Platinum-based alloys for high temperature and special applications; Development of alternative techniques for matte level measurements in sulphide smelting furnaces; Keynote Address Seismic method applied to platinum exploration, a success story; Breakeven extraction factors for the Merensky Reef using stope width and market price simulation

The Properties and Applications of Platinum

2020-8-21  Platinum is always found alongside other PGMs. In South Africa's Bushveld complex and a limited number of other ore bodies, PGMs occur in sufficient quantities so as to make it economical to exclusively extract these metals; whereas, at Russia's Norilsk and Canada's Sudbury deposits platinum and other PGMs are extracted as by-products of nickel and copper.

Recovery by hydrometallurgical extraction of the platinum

2012-2-27  At 90 °C the extraction ef?ciencies of platinum, palladium and rhodium increased. These results indicated that metal extraction improved by increasing reaction time but plateaus above 6 h. 3.3.

Platinum Mining and Refining Education

Platinum ores such as sperrylite and cooperite may be mined when they are found in quantities that make extraction economically feasible. In other situations, platinum is obtained as a by-product when ores of other metals, such as copper and nickel, are refined. Modern Platinum Mining Techniques

THE PRIMARY PRODUCTION OF PLATINUM GROUP

2020-1-24  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