PPT - Extracting Metals from Ores PowerPoint Presentation PowerPoint Presentation Metal ore deposits are a finite resource and non-renewable A mineral which contains a high enough percentage of a metal for economic extraction is called a metal ore Extracting Metals Introduction by ksmith88 - Teaching
Microbial ore leaching (bioleaching) is the process of extracting metals from ores with the use of microorganisms This method is used to recover many different precious metals like copper lead zinc gold silver and nickel Microorganisms are used because they can lower the production costs
Title Extraction of metals from their ores 1 Chapter 5 2 Extraction of metals from their ores 2 An ore of a metal metal minerals impurities 3 Processes of obtaining a pure metal from an ore Mining of the ore Concentrating the ore Extraction of the metal from the concentrated ore Purification of the impure metal (refer to pg 89 ) 4 EXAMPLES
Methods of extraction An ore is usually a compound of the metal mixed with impurities When the metal is dug up a method must be used to separate the metal from the rest of the ore This is called extracting the metal The method of extraction depends on how reactive the metal is The more reactive the metal the more difficult it is to extract from its compound
ore extraction process Extractive metallurgy is a branch of metallurgical engineering wherein process and methods of extraction of metals from their natural mineral deposits are studied The field is a materials science covering all aspects of the types of ore washing concentration separation chemical processes and extraction of pure metal and their alloying to suit various applications sometimes for direct use as
Jul 23 2018Extraction of metals The process of extracting metal ores buried deep underground is called Mining The metal ores are found in the earth's crust in varying abundance The extraction of metals from ores is what allows us to use the minerals in the ground! The ores are very different from the finished metals that we see in buildings and bridges Ores consist of the desired metal compound
Teaching resources Observing electrolysis Students are amazed that by simply passing electricity through molten NaCl you can produce the metal sodium and the toxic gas chlorine – neither of which resemble the white solid you started with Electrolysis of molten lead bromide works well in the classroom – use a fume cupboard Creating a model of electrolysis to show electron movement
Iron ore Extraction of Zinc - Zinc is extracted through carbon reduction of the ore Zinc blende (ZnS) ore by specially designed blast furnaces The process contains the following steps 1 Concentration of the ore by froth floatation method - The ore is kept in a large tank containing water and pine oil
Extractive metallurgy of iron Coke which is both reducing agent and fuel providing heat for melting the metal and slag Coke is produced from coking coals by heating them away from air Limestone – calcium silicate fluxes forming a fluid slag for removal gangue from the ore Iron is produced in a blast furnace
Extraction of Metals from their Ores Ores of metals high up in the electrochemical series contain stronger bonds and therefore require more sophisticated and expensive methods of extraction Metals low down in the Electrochemical Series form weak bonds with other elements As a result ores of these metals can broken up easily to obtain the metal 11 Electrochemical Series Must be electrolysed to release metal
Commonly there are three kinds of extraction technologies the fractional step method ion exchange method and solvent extraction method Fractional step method The fractional step method is to extract and purify rare earth elements according to their compounds' different solubility in the solvent
metal The metal content in the ore can vary depending upon the impurities present and chemical composition of the ore Some common steps involved in the extraction of metals from their ores are i Crushing and pulverization ii Concentration or dressing of the ore iii Calcination and roasting of the ore iv Reduction of metal oxides to free metal v
Aug 22 2017Full Lesson PowerPoint (including suggested practical activity) sufficient to teach the GCSE 9-1 specification Chemistry lesson on the extraction of metals from their ores (also encompassing oxidation and reduction) This includes the new Higher-tier material on biological methods of extraction
May 15 2011Extracting copper from copper oxidebr /a Transfer one spatula measure of copper(II) oxide to a hard glass test-tube br /b Carefully add one spatula of charcoal powder on top of the copper oxide without any mixing br /c Strongly heat these two layers for five minutes in a Bunsen flame br /d Allow to cool and then look closely at where the powders meet in the test-tube
Microbial ore leaching (bioleaching) is the process of extracting metals from ores with the use of microorganisms This method is used to recover many different precious metals like copper lead zinc gold silver and nickel Microorganisms are used because they can lower the production costs
Strategies for optimizing heap leaching include ore crushing ore agglomeration low-cost air ventilation of sulfide ore heaps undergoing bio-oxidation using fans and the use of aggregate metal extraction rate constants in making metallurgical business decisions about heap leaching
This report covers need for iron ore extraction and processing of crude ore supply of iron ore volatile prices of iron ore uncertainties in global market major global operating iron ore mines leading players in mining and future of the mining sector over the coming years | PowerPoint PPT presentation |
Feb 17 2007Best Answer you need to extract metals from there ore You can find metals int ehre natural state but they are very low in the reactivity series if you find them in that way You normally find metals combined with other substances like oxygen so they are called iron oxide for example if that happens then you cna react it with carbon to get rid of the oxygen and you are left with just the
Table of ContentsOre SamplesChromite Ore ProcessingShaker Table Concentration of Dry Crushed OreChromium Ore MetallurgyConclusions Chromium has a wide variety of applications in the modern world Its major uses are in stainless steels and the plating of metals Other important uses include alloy steel heating elements pigments leather processing catalysts and refractories
Jul 28 2012There are different steps involved in extraction of metals Let us discuss them one by one 1 Crushing and Grinding First of all ores are crushed into a fine powder in big jaw crushers and ball mills This method is called pulverization
Notes 4 CHEMISTRY MODULE - 6 Occurrence and Extraction of Metals Chemistry of Elements Copper India does not have rich copper ore deposits The total reserves of the ore in the country are estimated around 60 crore tonnes Major ore producing areas are Singhbum district (Bihar) Balaghat
Presentation Summary extraction of metals Metals can be extracted from their ores by electrolysis Electrolysis is an expensive method and is used to extract very reactive metals Electrolysis is an expensive method and is used to extract very reactive metals
Extraction of metals teaching resources Worksheets and lesson ideas to challenge students aged 11 to 16 to think hard about the extraction of metals (GCSE and Key Stage 3) During the extraction of aluminium the dust from the bauxite mines causes breathing difficulties but the mines
Extraction of Metals The occurrence of metals in nature is only a part of the process these metals also have to be extracted Metallurgy is the process of extracting metals The basic step of extracting metals is called concentration of ores Concentration of Ores The
Mar 03 2009Extraction 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
Extraction of mercury from cinnabar The concentrated are is mixed with 2% coke and fed into shaft furnace through a cup and wne Arrangement the furnace is heated by pruning fuel and air is below in cinnabar is first oxidized to mercuric oxide which then decompose into mercury the vapor of mercury are condensed in Y-shaped Earthen condensers cooled by water
Metals in the middle of the activity series like Zn Fe Pb are found as oxide sulphide or carbonate ores It is easier to obtain metals from their oxides than from their sulphides or carbonates So non oxide ores are converted into oxide form before reduction Non oxide ores can be converted into oxide form by roasting or calcination
In this unit students are introduced to basic mining methods and processes This unit also addresses some of the impacts of mining (particularly from mining for metals) on the environment and human health and integrates concepts such as ore grade economics and mining-related decisions with resource use and manufacturing
metals from the ore Commonly used for low-grade ore Process consists of Crushed ore is piled into a heap on a slope (impenetrable layer) Leaching reagent (dilute sulfuric acid) is sprayed and trickles though heap to dissolve copper from the ore Pregnant leach solution and copper sulfate is collected in a small pool Copper compound contains between
Full Lesson PowerPoint (including suggested practical activity) sufficient to teach the GCSE 9-1 specification Chemistry lesson on the extraction of metals from their ores (also encompassing oxidation and reduction) This includes the new Higher-tier material on biological methods of extraction
Here is an Ancient Gold Ore Milling Process used in China in the 1800s We might use it again after WW3 At the time 1890 the Author said "There is of course nothing for us to learn from this imperfect and rudimentary gold-extraction process described here which is doubtless destined to disappear ere long before the progress of scientific mining now making itself slowly felt
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