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    • THE PRIMARY PRODUCTION OF PLATINUM GROUP METALS .

      Primary production at Impala Platinum mine in South Africa. IMAGE CREDIT: Mining Operations, Implats. 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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      Platinum - Palladium Flotation

      Distribution of palladium values in the concentrates ranged from 26 to 63 pct and that of platinum from 72 to 90 pct. Best platinum and palladium recoveries were obtained from diethyl xanthogen formate as the collector. Increasing the amount of each collector to 0-2 lb/ton .

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      THE PRIMARY PRODUCTION OF PLATINUM GROUP METALS .

      Primary production at Impala Platinum mine in South Africa. IMAGE CREDIT: Mining Operations, Implats. 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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      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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      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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      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

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      Occurrence of Metals: Metal Ores, Methods of Extraction ...

      The basic step of extracting metals is called concentration of ores. Concentration of Ores. The ores contain a lot of impurities that need to be filtered. The filtration of these impurities from ores is known as concentration. Concentration can be done by gravity separation .

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      Methods of recovering platinum-group metals from ...

      Because the ore is sulfidic in nature, it was concentrated by froth flotation. A 45 kg/h process development unit (PDU) was constructed and 85 to 95% of the platinum and palladium were recovered from the ore by using mercaptobenzothiazole or sodium isobutyl xanthate as collectors.

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      Production - South Africa - PMM

      Mill-head grades of BIC ore (a measure of the ore's pgm content as it enters the first stage of processing) are typically between 2 and 6 grams of combined platinum, palladium, rhodium and gold per tonne.

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      Treatment of Platinum Flotation Products | Johnson Matthey ...

      A flowsheet has been developed for the production of rich concentrates of precious and non-ferrous metals by a complex treatment of the flotation products from South African platinum-containing chrome ores. The procedure involves: autoclave leaching, roasting, hydrochlorination and precious metal recovery by sorption. Autoclave oxidative leaching of the initial material allows the non-ferrous ...

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      Analysis of Platinum Group Metals with the iCAP 7400 ICP-OES

      acid concentration as the samples and may be matrix matched to major base metal components, if so required. An internal standard was not used for this experiment but could be used where the maximum precision is required. Figure 1. Microwave digestion program. Method development and analysis The platinum group metals industry often utilizes

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      Extraction of Metals: Ores and Minerals - BYJUS

      The ores are very different from the finished metals that we see in buildings and bridges. Ores consist of the desired metal compound and the impurities and earthly substances called Gangue. The extraction of metals and its isolation occurs over a few major steps: Concentration of Ore; Isolation of metal from concentrated Ore; Purification of ...

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      Gravity Separation System,Equipment,Method | Prominer ...

      Shaking table is one type of main equipment of gravity concentration, which is widely used in heavy minerals recovering project such as iron, ilmenite, chromite, pyrite, tungsten ore, tin ore, tantalum-niobium ore, placer gold, alluvial sand, coastal sand, gravel mine, zircon and rutile as well as other nonferrous metals, rare metals and ...

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      PRECONCENTRATION OF UG2 PLATINUM ORE: ECONOMIC .

      PRECONCENTRATION OF UG2 PLATINUM ORE: ECONOMIC BENEFITS TO MINE, PLANT, AND SMELTER F. Smit DRA Mineral Projects V. Coetzee DRA Mineral Projects M. Seymour DRA Mining S. Notnagel DRA Mining Abstract Mining and plant disciplines can benefit from pre-concentration of UG2 platinum ores in a dense medium separation (DMS) plant.

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      New technologies in the concentration of PGM values from ...

      from it in the early days. The Merensky ore had all higher base metal credits anyway, and you needed them to get a matte fall, so there was no driving force to look seriously at the UG-2 reef. Platinum demand at this time could be easily met from the Merensky ore, so the motivation to tackle more complex ores was not there. The low price of ...

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      Selling Platinum from Ore - Gold Refining Forum

      Dec 11, 2019· Basically, what I have is an ore that is very high in metallic platinum. I have a proprietary process for extracting it and I have found that I can make it precipitate by itself as PtCl6 without the use of ammonium chloride simply by keeping the concentration very high and adjusting the PH.

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      A New Way to Find Platinum Group Metals - US

      The average grade of platinum-group elements (PGEs) in ores mined for their PGE concentrations range from 5 to 15 ppm. In most rocks, platinum-group minerals range in size from less than a micron to a few hundred microns in diameter, so the presence of PGEs must be confirmed by laboratory analysis.

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      Treatment of Platinum Flotation Products | Johnson Matthey ...

      A flowsheet has been developed for the production of rich concentrates of precious and non-ferrous metals by a complex treatment of the flotation products from South African platinum-containing chrome ores. The procedure involves: autoclave leaching, roasting, hydrochlorination and precious metal recovery by sorption. Autoclave oxidative leaching of the initial material allows the non-ferrous ...

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      50.5 EXTRACTION OF METALS- METALLURGY | Chemistry .

      the ore and they are collected in the form of a heap near it. The non-magnetic part of the ore flies off and forms a heap away from the impurities. 4. Leaching: It is a chemical method for the concentration of the ore. In this process the powdered ore is dissolved selectively in acids, bases or other suitable reagents.

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      Platinum group - Wikipedia

      Platinum can occur as a native metal, but it can also occur in various different minerals and alloys. That said, Sperrylite (platinum arsenide, PtAs 2) ore is by far the most significant source of this metal. A naturally occurring platinum-iridium alloy, platiniridium, is found in the mineral cooperite (platinum sulfide, PtS).

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      Chapter 6.11 Platinum - World Health Organization

      The average concentration of platinum in the lithosphere has been estimated to be in the region of 0.001-0.005 mg/kg derived from the ores in the magmatic and sedimentary deposits near the earth's crust (6). Approximately 1400 tonnes of platinum have been mined up to the present. It

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      Learn About Rhodium, a Rare Platinum Group Metal

      Jun 25, 2019· The first step in extracting rhodium from the ore is precipitating precious metals such as gold, silver, palladium, and platinum. The remaining ore is treated with sodium bisulfate NaHSO 4 and melted, resulting in rhodium (III) sulfate, Rh 2 (SO 4) 3.

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      US4295881A - Process for extraction of platinum group ...

      A process for treating chromite-bearing ores to obtain useful mineral values, especially platinum group metal, therefrom wherein the ore is separated into magnetic and non-magnetic fractions; the non-magnetic fraction, containing a substantial portion of the platinum group metals, is concentrated and smelted to produce a metal layer containing platinum group metals; and the platinum group ...

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      niobium processing | History, Ores, Mining, & Extraction ...

      Ores. Niobium occurs mostly as an oxide and has a strong geochemical coherence with tantalum. Major minerals of niobium are pyrochlore [(Na, Ca) 2 Nb 2 O 6 F] and columbite [(Fe, Mn)(Nb, Ta) 2 O 6], consisting of niobate, tantalate, iron, and manganese.Pyrochlore occurs usually in carbonatites and in pegmatite derived from alkalic rocks, commonly in association with zirconium, titanium ...

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      About Platinum

      Assaying ores and concentrates for platinum-group metals is extremely difficult, since the concentration of any particular metal may be less than one part per million. Initial concentration is achieved by fire assay. The assay bead is dissolved in aqua regia and the metals separated and concentrated, often by solvent extraction.

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      US4295881A - Process for extraction of platinum group ...

      A process for treating chromite-bearing ores to obtain useful mineral values, especially platinum group metal, therefrom wherein the ore is separated into magnetic and non-magnetic fractions; the non-magnetic fraction, containing a substantial portion of the platinum group metals, is concentrated and smelted to produce a metal layer containing platinum group metals; and the platinum group ...

    Get Price

      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 the power and water requirements for processing.

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      Chemistry - Platinum - Tutorialspoint

      Platinum is commonly found as the native (natural) platinum and as alloy with the other platinum-group. 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

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      Assay Determination of Platinum in Ore & Gold Bullion

      By the old method of determining platinum in ores and bullion, the silver-alloy first obtained in the regular course of assay is parted in strong sulphuric acid and the residual metal weighed. This is re-alloyed with silver by a second cupellation and parted in nitric acid, the residual metal being again weighed. Any difference shown between the two weighings is assumed to be, and is called ...

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      Platinum group | chemical element group | Britannica

      Assaying ores and concentrates for platinum-group metals is extremely difficult, since the concentration of any particular metal may be less than one part per million. Initial concentration is achieved by fire assay. The assay bead is dissolved in aqua regia and the metals separated and concentrated, often by solvent extraction. ...

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