how is platinum extracted and purified

  • How is gold mined

    In placer mining the gold is retrieved by metal detecting panning cradling sluicing and dredging. Using gravity and water to separate the dense gold from the other materials that surround it this is the most common gold mining category for amateur gold hunters. Hard rock mining is the process of using open pit or underground mining tunnels

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  • The pilot test of Pt-Pd and Pt-Rh feeds extracted and

     · Platinum palladium and rhodium of the raw feeds extracted and separated with a new sulfoxide extractant (MSO) were studied in the paper. The pilot test results showed that the percentage extractions are more than 99 for platinum and palladium in Pt-Pd feed and the percentage strippings are 100 and 99.2 with HCl and ammonia respectively.

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  • Exampro GCSE Chemistry NameMount Grace School

    Metals are extracted from their ores. Many copper ores contain only 2 of copper compounds. (a) €€€€Copper is now extracted from ores containing a low percentage of copper compounds. Platinum 0. Iron 216 4.1 Gold 0. (a)€€€€ Use information in the table to suggest why gold and platinum are very

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  • The Environmental Costs of Platinum-PGM Mining An

     · The platinum group of metals (PGMs) possess a range of unique chemical and physical properties The concentrate is then smelted to produce a PGM-rich Ni-Cu matte with the PGMs extracted and purified at a precious metals refinery. The processing is therefore more analogous to base metals rather than Au-Ag mills which use cyanide-based

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  • UCSB Science Line

    Question Date . Answer 1 Gold is made in the interior of massive stars. When these stars end their lives they often blow up and produce SUPERNOVA. During these giant explosions many elements that have high atomic number get made. This is where the gold (Au) comes from. Au is the way to write the symbol for gold.

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  • Extracted Opium Purification. Drugs-Forum

     · The filter aid can be used again without further purification. The other opiate alkaloids that were extracted into the substantially water-immiscible solvent may be combined with the alkaloids which precipitated from the aqueous extract at pH 11.5 to 11.9 and further purified by other known methods.

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  • Platinum Mining and Refining Education

    Platinum Processes Uses. A solid platinum nugget. Image from popsci. Nuggets or grains of pure platinum can be found in nature but more frequently platinum is found alloyed with other metals such as iron copper gold nickel and the other PGMs.The size of platinum grains or nuggets varies from small granules to pebbles weighing up to 20 pounds (9 kg) or more.

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  • How are metals with different reactivities extracted

    2 days ago · Unreactive metals such as gold are found in the Earth s crust as uncombined elements. However most metals are found combined with other elements

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  • Gold processingRefining Britannica

    Gold processingGold processingRefining 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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  • Thorium processing Britannica

     · Thorium processing preparation of the ore for use in various products. Thorium (Th) is a dense (11.7 grams per cubic centimetre) silvery metal that is softer than steel. It has a high melting temperature of approximately 1 750 °C (3 180 °F). Below about 1 360 °C (2 480 °F) the metal exists in

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  • How are metals with different reactivities extracted

    2 days ago · Unreactive metals such as gold are found in the Earth s crust as uncombined elements. However most metals are found combined with other elements

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  • The Environmental Costs of Platinum-PGM Mining An

     · The platinum group of metals (PGMs) possess a range of unique chemical and physical properties The concentrate is then smelted to produce a PGM-rich Ni-Cu matte with the PGMs extracted and purified at a precious metals refinery. The processing is therefore more analogous to base metals rather than Au-Ag mills which use cyanide-based

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  • How Is Platinum Extracted Reference

     · Platinum is an incredibly rare metal that is mined and extracted in a variety of different ways depending on the technological sophistication of the miners attempting to extract it. It is incredibly difficult to find in large pure quantities so it needs to be extracted

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  • Exampro GCSE Chemistry NameMount Grace School

    Metals are extracted from their ores. Many copper ores contain only 2 of copper compounds. (a) €€€€Copper is now extracted from ores containing a low percentage of copper compounds. Platinum 0. Iron 216 4.1 Gold 0. (a)€€€€ Use information in the table to suggest why gold and platinum are very

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  • UCSB Science Line

    Question Date . Answer 1 Gold is made in the interior of massive stars. When these stars end their lives they often blow up and produce SUPERNOVA. During these giant explosions many elements that have high atomic number get made. This is where the gold (Au) comes from. Au is the way to write the symbol for gold.

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  • How is platinum extracted from its oreSlideShare

     · An ore is a naturally occurring mineral from which a pure metal can be extracted. For Platinum the two- chief minerals are sperrylite or platinum arsenide (PtAs2) and co-operate or platinum sulfide (Pts). Extracting Platinum from these ores is arguably one of the most capital and labour intensive operations in the world.

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  • Extraction of Aluminium (Aluminium Ore)Hall-Heroults

    Extraction of Aluminium (Aluminium Ore)To generate aluminium oxide from aluminium ore called bauxite is purified a white powder form which aluminium can be extracted. Occurrence and uses of Aluminium. Hall-heroult process for the production of aluminium.

    Gold processingRefining Britannica

    Gold processingGold processingRefining 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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  • Extracting aluminiumIron and aluminiumGCSE Chemistry

    Extracting aluminium. Aluminium is the most abundant metal on Earth. But it is expensive largely because of the amount of electricity used in the extraction process. Aluminium ore is called

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  • purification of copper by electrolysis metal extraction

     · 4C. Purification of Copper by Electrolysis (extraction from ore above). The impure copper from a smelter is cast into a block to form the positive anode.The cathode is made of previously purified copper.These are dipped into an electrolyte of copper(II) sulphate solution. When the d.c electrical current is passed through the solution electrolysis takes place.

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  • GCSE CHEMISTRYCopperPurification by Electrolysis

     · Extraction of Metals. Extraction of CopperPurification by Electrolysis.. In the purification of copper the rate at which the copper ions enter the electrolyte from the anode is the same as the rate at which the copper ions leave the electrolyte at the cathode.The concentration of the copper(II) sulfate solution therefore remains unchanged.. As copper is transferred from the anode to the cathode

    How can metals be extracted AskingLot

    Likewise people ask why do metals need to be extracted Once the ores have been excavated the metals themselves must then be extracted from the ore a process that depends on the metals reactivity according to BBC.Less reactive metals like iron can be extracted with reduction where oxygen is removed from the ore through a reaction with carbon or carbon dioxide.

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  • Palladium element extraction methodDeep underground

     · Palladium is otherwise extracted from platinum ores after platinum and gold have been removed. The metal is first converted to palladium chloride (PdCl 2) and then purified as pure palladium. Applications Palladium is used in various applications. Few of them are listed below Catalysis

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  • How is Silver processed / madeextracted purified

     · How is silver processed made extracted purified. How is Silver processedSilver is most conductive and reflective metal on our earth. People have been making silver jewelry and other objects since about 4000 BC. Silver is not only used in jewelry. As 80 of silver is mined for industrial purposes.

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  • Gold processingRefining Britannica

    Gold processingGold processingRefining 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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  • gcse 1. Introduction to the Extraction of Metals method

     · How are metals extracted from mineral ores How do we make iron steel other alloys aluminium sodium copper zinc titanium and chromium. The six linked pages include an introduction to metal extraction or metal manufacture and production. There are detailed notes on the extraction of iron and its conversion to steel. The extraction and manufacture of aluminium and sodium are described.

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  • Extraction of Platinum Group Metals IntechOpen

     · About 80 of the worlds reserves for platinum group metals (PGMs) are in South Africa s Bushveld Igneous Complex. 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 of PGM are

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  • gcse 1. Introduction to the Extraction of Metals method

     · How are metals extracted from mineral ores How do we make iron steel other alloys aluminium sodium copper zinc titanium and chromium. The six linked pages include an introduction to metal extraction or metal manufacture and production. There are detailed notes on the extraction of iron and its conversion to steel. The extraction and manufacture of aluminium and sodium are described.

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  • Extraction and Refining of the Platinum Metals Johnson

    2 days ago · A major development in the world s platinum industry took place in the early nineteen twenties when large deposits of platinum bearing ore were discovered in the Transvaal in South Africa. This led to the formation in 1931 of Rustenburg Platinum Mines Limited to work these deposits and this company remains to this day the only platinum producer in South Africa and the only major producer in

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