extraction of metals of low reactivity silver platinum gold

extraction of metals of low reactivity silver platinum gold

  • Collect information about extraction of metals of low

    Low reactivity metals like silver, mercury, platinum and gold are after sound in free state. Their reactivity with other atoms is very low. Oxides of these metals can be reduced to metals by heat alone and sometimes by displacement from their aqueous solution.

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  • Chemistry metals Flashcards Quizlet

    Metals above carbon in the reactivity series must be extracted using electrolysis, Metals less reactive than carbon can be extracted from their ores by reduction, Copper, silver, gold and platinum can occur native and do not need to be extracted. Sometimes copper needs to be extracted from an ore.

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  • Separating the Platinum Group Metals by Liquid Liquid

    Separating the Platinum Group Metals by Liquid Liquid Extraction NEW PROCESS HAS POTENTIAL ECONOMIC ADVANTAGES OVER CONVENTIONAL SELECTIVE PRECIPITATION By P. Charlesworth Marthc. Kuqtenhurg Refiners (IK) Limited, Rogt;ston, England To extract the platinum group metals from ore, and to refine them to the very high purity required for their many applications,

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  • Metal extraction and the reactivity series bbc

    The method used to extract metals depends on the reactivity of the metal. Metals are used for a variety of purposes. An alloy is a mixture of a metal and another element.

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  • Extraction of Low Reactivity Metals Metals and Nonmetal

    Extraction of Low Reactivity Metals. Metals like copper, mercury, silver and gold are less reactive. Metals at the bottom of the reactivity series can be obtained by heating their compounds. For example, when cinnabar (HgS) is heated in a furnace, it is reduced to metallic mercury. Metals in the middle of the series like zinc, iron, nickel,

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  • extraction of metals of low reactivity silver platinum and

    Native metal. Only gold, silver, copper and the platinum metals occur in nature in larger the less reactive metals such as gold and platinum are found as native metals. since the process of extracting metals from their ores, smelting, is thought to . of the iron nickel alloys taenite (high nickel content) and kamacite (low nickel content).

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  • Platinum

    Pure platinum is a lustrous, ductile, and malleable, silver white metal. Platinum is more ductile than gold, silver or copper, thus being the most ductile of pure metals, but it is less malleable than gold. The metal has excellent resistance to corrosion, is stable at

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  • gcse 1. Introduction to the Extraction of Metals method

    1. Introduction to the extraction of metals. What methods can be used in extracting metals from mineral ores? The Earth's crust contains many different rocks Rocks are a mixture of minerals and from some we can make useful substances A mineral can be a solid metallic or nonmetallic element or a compound found naturally in the Earth's crust.

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  • Extraction of Reactive Metals patana.ac.th

    Carbon can be used to reduce the oxides of metals below aluminium in the Reactivity Series. (Reduction is the removal of oxygen.) For example, carbon is used in the extraction of zinc, iron, and lead. However, it can't be used to extract metals near the top of the Reactivity Series.

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  • Information about extraction of metals of low reactivity

    Information about extraction of metals of low reactivity silver, platinum and gold. 2.Ag2S is dissolved in KCN solution to get dicyanoargentate (I) ions. From these ions silver is obatined in the form of Precipitate by treating it with Zinc dust. Gold is extracted from the ore called as Electrum by treating the ore with weak cynaide solution. Zinc is added and gold separates from the ore.

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  • A Novel Technique for Silver Extraction from Silver

    Precious metals such as gold and silver have traditionally been recovered from ores by leaching with alkaline cyanide solution13. By reaction with oxygen and cyanide ions, silver is converted into a stable cyanide complex ion which is recovered from the leaching solution by di erent methods.

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  • Chemistry of Elements National Institute of Open Schooling

    explain different methods for refining of metals poling, liquation, distillation and electrolytic refining. 18.1 Occurrence of Metals. Metals occur in nature in free as well as combined form. Metals having low reactivity show little affinity for air, moisture, carbon dioxide or other non metals present in nature.

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  • The Metal Reactivity Series Compound Interest

    The metal reactivity series is a commonly taught concept in chemistry, placing the metals, as its name suggests, in order of reactivity from most reactive to least reactive. It's also a useful tool in predicting the products of simple displacement reactions involving two different metals, as well as providing an insight into why different metals are extracted from their ores in different manners.

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  • Precious metals gold, silver and platinium

    A precious metal is rare and of high economic value. Precious metals are also less chemically reactive than most elements. They have high lustre, and higher melting points than most other metals. The best known precious metals are gold, silver and platinum, although plutonium and uranium could also be considered as precious metals. The latter two will not be discussed in this section.

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  • extraction of metals of low reactivity silver platinum and

    Native metal. Only gold, silver, copper and the platinum metals occur in nature in larger the less reactive metals such as gold and platinum are found as native metals. since the process of extracting metals from their ores, smelting, is thought to . of the iron nickel alloys taenite (high nickel content) and kamacite (low nickel content).

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  • Collect information about extraction of metals of low

    Metals like copper, mercury, silver and gold are less reactive. Metals at the bottom of the reactivity series can be obtained by heating their compounds. For example, when cinnabar (HgS) is heated in a furnace, it is reduced to metallic mercury. Metals in the middle of the series like zinc, iron, nickel, tin, lead, etc., are reduced by a chemical reducing agent like carbon or carbon monoxide.

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  • Principles of Metallurgy 13 Sakshi Education

    Metals of low reactivity such as silver, mercury, platinum and gold are often found in free state ii. Their reactivity with other atoms is very low. iii. The Oxides of these metals can be reduced to metals by heat alone and sometimes by displacement from their aqueous solution.

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  • Extraction and Refining of the Platinum Metals

    basic process for extraction of the platinum metals has remained essentially the same. Rustenburg converter matte contains about 46 per cent of nickel and 28 per cent copper, together with some other base metals and sulphur. The platinum group metals, together with some gold

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  • Precious metals gold, silver, platinum, palladium and

    Metals. Platinum (PT) Platinum is more precious than gold, it is a very strong dense metal that never corrodes. In its pure form it is harder than gold and silver so for jewellery it is alloyed with 5% of other metals, usually Iridium (another even rarer metal in the platinum family) to make it more workable.

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  • Extraction Of Metals SlideShare

    Mar 03, 20090183;32;Extraction Of Metals 1. Extraction of metals Only some unreactive metals such as silver, gold and platinum can occur freely in nature. Most metals react with other elements to form ores. 2.

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  • The Metal Reactivity Series Compound Interest

    For the metals highest in the reactivity series, extraction using carbon simply isnt a possibility. Instead, a different method altogether is used. This method, electrolysis, involves passing an electric current through the molten metal ore. This decomposes the ore, splitting it into its component elements, and allowing the metal to be extracted.

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  • 50.5 EXTRACTION OF METALS METALLURGY Chemistry

    On the basis of reactivity we can group the metals into the following three categories (i) Metals of low reactivity. (ii) Metals of medium reactivity. (iii) Metals of high reactivity. Different reduction processes are to be used for obtaining the metals falling in each category.

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  • Native metal

    Most gold is mined as native metal and can be found as nuggets, veins or wires of gold in a rock matrix, or fine grains of gold, mixed in with sediments or bound within rock. The iconic image of gold mining for many is gold panning , which is a method of separating flakes of pure gold from river sediments due to their great density .

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  • Metal extraction and the reactivity series bbc

    The method used to extract metals depends on the reactivity of the metal. Metals are used for a variety of purposes. An alloy is a mixture of a metal and another element.

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  • Chemistry Tutorial Metal Extraction Concepts

    A metal ore is a mixture of minerals containing the metal, and other materials in the rock, from which it is economically viable to extract the metal. A high grade ore produces a high yield of metal. A low grade order produces a low yield of metal. Most metal ores occur as a metal oxide, a metal sulfide or a metal

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  • Hydrogen in the Reactivity Series patana.ac.th

    However, two non metals (hydrogen and carbon) can be included in our 'league table'. In this unit we will find out the position of hydrogen in the Reactivity Series and how it can be used in the extraction of tungsten metal. (Carbon is dealt with in the unit Reduction of Metal Oxides by Carbon in the chapter Extraction of Metals).

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  • extraction of metals of low reactivity silver platinum and

    The Reactivity Series of Metals. The implications of a metal's reactivity and method of extraction are also mentioned. Silver has no reaction with dilute hydrochloric acid or dilute sulphuric acid. Gold's extremely low reactivity makes it a valuable jewellery metal as it doesn't corrode Platinum has no reaction with cold water or when heated in steam.

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  • Extraction of metals SlideShare

    Sep 26, 20160183;32;Some examples of metals with low reactivity are 1. Gold, 2. Copper, 3. Silver and 4. Platinum. 7. Gold Silver Platinum Some types of low reactivity metals 8. The highly reactive metals The highly reactive metals are the most difficult to extract from their ores.These metals are found in very stable compounds.

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  • Principles of Metallurgy 13 sakshieducation

    Eg Gold (Acl), silver (Ag) and copper (Au). Most of the metals are found in nature in the combined form due to their move reactivity. The compounds of the metals which occur in nature in the earth crust are called minerals. The compounds of the metals which occur in

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  • Metal Reactivity and Extraction Metals Google

    Metal Reactivity and Extraction. Metals with low reactivity can be found as elements silver, gold and platinum. Metals up to and including zinc are extracted by heating with carbon (zinc, iron, tin, lead and copper). Metals above zinc in the reactivity series (high reactivity) are extracted from their compounds by electrolysis of the molten compound (melted compound).

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  • Extraction of Gold from Platinum Group Metal Ores

    Gold is typically associated with platinum group metal (PGM) ores and is ultimately recovered in the precious metals refineries. This chapter summarizes the extraction and refining of gold from PGM bearing concentrates and secondary materials.

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  • THE RECOVERY OF PLATINUM, PALLADIUM, AND GOLD

    Gold was selectively recovered with the use of Minix, while effective recovery of gold, platinum, and palladium over the base metals, copper, and iron, was achieved with Amberlite PWA 5. Successful elution of these metal cyanides was possible from both Minix and Amberlite PWA 5,

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  • Extraction Of Metals SlideShare

    Mar 03, 20090183;32;Extraction of metals Only some unreactive metals such as silver, gold and platinum can occur freely in nature. Most metals react with other elements to form o Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.

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  • Extraction of metals SlideShare

    Sep 26, 20160183;32;Gold Silver Platinum Some types of low reactivity metals 8. The highly reactive metals The highly reactive metals are the most difficult to extract from their ores.These metals are found in very stable compounds.

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  • Gold extraction

    Gold extraction refers to the processes required to extract gold from its ores.This may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of

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  • The Chemistry of the Extraction of Gold SAIMM

    The Chemistry of the Extraction of Gold M.J. Nicol, C.A. Fleming and R.L. Paul 1S.1 General Principles 15.1.1 The chemistry of gold compounds Gold is the most noble of all the metals and this .is the key to both its eternal romance and its many practical uses in industry. It is the only metal, for

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