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Assay for platinum metals in ore concentrates

In the following report platinum metals ores and concentrates have been examined by direct assaying ... 1957. Each method is evaluated from the point of view of the optimum concentration range ...

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THE PRIMARY PRODUCTION OF PLATINUM GROUP METALS …

For example, in South Africa, PGM-bearing ores generally have a low PGM content of between 2 and 6 grams per tonne and it will typically take up to six months and between 10 and 40 tonnes of ore to produce one ounce (31.1035g) of platinum.2 ...

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DETERMINATION OF PLATINUM, PALLADIUM, RHODIUM AND GOLD IN ORES …

DETERMINATION OF PLATINUM, PALLADIUM, RHODIUM AND GOLD IN ORES AND CONCENTRATES USING IRIDIUM AND RUTHENIUM AS CO-COLLECTORS BY FIRE ASSAY. BY FUNGAI NDOVORWI (R062120P) SUPERVISOR: Mr A

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Platinum is produced in South Africa by Amplats, Impala …

Platinum mining on a large scale began around 1926, and before the 1920s were over, no less than seven mining operations had started in South Africa. The platinum ores were mostly processed by traditional milling and gravity-table concentration.

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PRECONCENTRATION OF UG2 PLATINUM ORE: ECONOMIC …

Mining and plant disciplines can benefit from pre-concentration of UG2 platinum ores in a dense medium separation (DMS) plant. The main benefit of DMS is the selective discard of waste from the feed stream, thus improving project economics while reducing ...

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What Makes a World Class Silver Deposit? | INN

Silver is an extremely rare metal only occurring in igneous rock at a concentration of only 0.07 parts per million. For comparison, copper is approximately 785 more prevalent. Due ...

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The primary magmatic concentration and secondary …

The primary magmatic concentration and secondary remobilisation of platinum-group elements in Ni-Cu sulphide ores - CORE Reader

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Platinum - Wikipedia

Platinum arsenide, sperrylite (PtAs 2), is a major source of platinum associated with nickel ores in the Sudbury Basin deposit in Ontario, Canada. At Platinum, Alaska, about 17,000 kg (550,000 ozt) was mined between 1927 and 1975. The mine ceased

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PRECONCENTRATION OF UG2 PLATINUM ORE: ECONOMIC …

Mining and plant disciplines can benefit from pre-concentration of UG2 platinum ores in a dense medium separation (DMS) plant. The main benefit of DMS is the selective discard of waste from the feed stream, thus improving project economics while reducing ...

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Gold and platinum group elements in cobaltarsenide …

Published: May 1990 Gold and platinum group elements in cobaltarsenide ores: Hydrothermal concentration from a serpentinite source-rock (Bou Azzer, Morocco) Gold und Platingruppen-Elemente in Kobalt-Arsenid Erzen: Hydrothermale Anreicherung aus einem

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Ore Deposits of the Platinum-Group Elements | Elements …

The formation of ore deposits of the platinum-group elements (PGE) requires that their concentrations be raised about four orders of magnitude above typical continental crustal abundances. Such extreme enrichment relies principally on the extraction capacity of sulfide liquid, which sequesters the PGE from silicate magmas.

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Improvement of technology of concentration of …

Ingrained ores of Norilsk copper-nickel deposits, which are involved into the extraction process, contain the most large quantity of concentration of platinum group metals, than all copper-nickel deposits and most every platinum-metallic deposits in the world.

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Chemistry - Platinum - Tutorialspoint

Platinum usually occurs in the ores of nickel and copper. Platinum also occurs naturally in the alluvial sands (commonly found in rivers). Platinum occurs with the concentration of only (about) 0.005 ppm in the Earth's crust. Alloys of Platinum Platinum-iridium is

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Platinum - an overview | ScienceDirect Topics

Palladium is usually associated with platinum, nickel, copper, and mercury ores. Palladium is commercially produced from nickel–copper deposits of South Africa and the Province of Ontario, Canada. The processing of large volumes of nickel–copper ore technically makes this extraction profitable despite its low concentration in these ores.

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Flotation Concentration Of Tantalite Ores | …

Concentration Of Ores By Flotation, I ilotation is a nevlstep in the separation of valueble minerals from eanene 1lris process has only been in commercial use for about six years Flotation Concentration Of Tantalite Ores

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Gold and platinum group elements in cobaltarsenide …

Published: May 1990 Gold and platinum group elements in cobaltarsenide ores: Hydrothermal concentration from a serpentinite source-rock (Bou Azzer, Morocco) Gold und Platingruppen-Elemente in Kobalt-Arsenid Erzen: Hydrothermale Anreicherung aus einem

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Method of determination of content of palladium and …

FIELD: methods of determination of content of palladium and platinum in ores containing considerable amount of iron, copper, zinc and other metals. SUBSTANCE: proposed method includes decomposition of ore by hydrofluoric and nitric acids followed by further decomposition by aqua regia, boiling-off to moist salts, dissolving of them in hydrochloric acid and extraction.

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How to Identify Platinum in Ore Deposits | Sciencing

The concentration of Pt in the anode slime sample solutions was below the detection limit. Therefore, measurement of the platinum concentration in the samples was not possible when 1:1 (v:v) adsorption–desorption cycles were used.

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Platinum group - Wikipedia

The platinum-group metals (abbreviated as the PGMs; alternatively, the platinoids, platinides, platidises, platinum group, platinum metals, platinum family or platinum-group elements (PGEs)) are six noble, precious metallic elements clustered together in the periodic table. These elements are all transition metals in the d-block (groups 8, 9 ...

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Platinum - Wikipedia

Platinum arsenide, sperrylite (PtAs 2), is a major source of platinum associated with nickel ores in the Sudbury Basin deposit in Ontario, Canada. At Platinum, Alaska, about 17,000 kg (550,000 ozt) was mined between 1927 and 1975. The mine ceased

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Ore Deposits of the Platinum-Group Elements | Elements | …

The formation of ore deposits of the platinum-group elements (PGE) requires that their concentrations be raised about four orders of magnitude above typical continental crustal abundances. Such extreme enrichment relies principally on the extraction capacity of sulfide liquid, which sequesters the PGE from silicate magmas.

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The Determination of Platinum in Ores and Mineral …

An assessment of methods currently available for the accurate determination of low concentrations of platinum in ores and mineral concentrates indicated that prior treatment of the sample by fire assay procedures is necessary. To enable rapid determinations to be carried out, instrumental methods applied to the metallic bead produced from the fire assay treatment have...

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Simultaneous determination of platinum group metals …

Extraction–atomic absorption spectrometric method for the determination of the platinum group elements and gold in copper–nickel ores using an autoclave sample decomposition technique. The Analyst 1996, 121 (4), 489 F. ZEREINI, B

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Process for recovering platinum group metals from ores …

22/8/1978· Platinum group metals (hereinafter sometimes referred to as "PGM") may be associated in ores and their concentrates with iron, copper and nickel sulfides. It has been known in the past to separate and refine these ores by conventional pyrometallurgical techniques, in which the various other materials (notably iron) are removed at intermediate steps in the process, leaving a PGM residue as …

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Methods of recovering platinum-group metals from …

Synopsis As part of its strategic and critical minerals program, the U.S. Bureau of Mines investigated methods for beneficiating and recovering platinum-group metals (PGM) from ores found in the Stillwater Complex, the only primary resource of platinum-group metals located in the United States.

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Gold processing - Refining | Britannica

Gold processing - Gold processing - Refining: Gold extracted by amalgamation or cyanidation contains a variety of impurities, including zinc, copper, silver, and iron. Two methods are commonly employed for purification: the Miller process and the Wohlwill process. The Miller process is based on the fact that virtually all the impurities present in gold combine with gaseous chlorine more ...

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A comparison of methods for the determination of …

The entire ore sample, weighing 1-2 lb, was placed on Determination of platinum in ores Table 1. Previous analyses of ores for platinum 993 Concentration of platinum, ppm Method S0 Float concentratel USBM 31" Fire assay and flame atomic-absorption Fire ...

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