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Large amount of are obtained from pyrite CuFeS2 by smelting. containing 4% or more are treated by smelting process. Very poor are treated by hydro-metallurgical process. For latest information , free computer courses and high impact notes visit :
second step, involving either smelting or leaching, removes a large proportion of impurity elements—in particular iron and, in case of sulfide sulfur. final step, refining, removes last traces of impurity elements and produces a copper product of 99.99 percent purity
Pb mixed concentrate regrinding process saves the grinding cost without fine grinding all the are, and it makes further monomer dissociation to create favorable conditions for the separation of and lead
· The ability to from bodies was well-developed by 3000 BCE and critical to the growing use of and alloys. Lake Van, in present-day Armenia, was the most likely source of for Mesopotamian metalsmiths, who used the metal to produce pots, trays, saucers, and drinking vessels
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Copper Mining and Extraction: Oxide Ores Copper is refined from ores in the ground, either through underground or open-pit mines. Most of the copper ores mined today are oxide or sulfide ores
· of directly from sulphide is less favourable than oxide through reduction. Explain. asked Dec 18, 2017 in Chemistry by sforrest072 128k points
tin, lead, and iron are more reactive and must be heated with carbon to the metals. Aluminum, calcium, sodium and other active metals are extracted using electrolysis. can be extracted by reduction. One of the common , malachite
· EXTRACTION OF COPPER • Copper is mainly extracted from its sulfide ores by smelting. • Following steps are involved in the extraction of copper: 4. CONCENTRATION • Finely crushed ore is concentrated by FROTH FLOATATION PROCESS
· Extracting copper from its ores. The method used to extract from its ores ore. Sulfide ores such as chalcopyrite CuFeS_2 are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite also known as copper pyrites and similar sulfide ores are the commonest ores of copper
In the of sulphide ,the metal is finally obtained by the reduction of cuprous oxide with a I sulphide 2 S b sulphur dioxide SO 2 c iron sulphide FeS d carbon monoxide CO Question 55. Aluminium is extracted from alumina Al 2 O 3 by electrolysis of a molten mixture of. Question 56. In
Modern smelters use processed fed into a flash furnace, typically fired by oxygen which produces blister , being further processed in a converter furnace. Molten is poured from here into rectangular moulds, the resulting ingots subjected to electrolysis producing a metal of 99.9% purity. can be recycled indefinitely without the base metal being compromised
The principal of is pyrite and is extracted from this . The different steps in of are: Crushing and Concentration: The obtained from mines are broken down into small piece by jaw crusher and then pulverized. The being sulphide is concentrated by froth floatation process
If a metal is less reactive than carbon, it can be extracted from its compounds by heating with carbon. Copper is an example of this. Copper mostly occurs as sulfide ores, which are heated in air
HYDROMETALLURGY OF This process is used for the of from low grade sulfide . In this process, the crushed and ground in bulk about 100,000 tons is exposed to air and water in big tanks. The air in the presence of water gradually oxidizes and iron sulphides to
Extracting copper from other ores Copper can be extracted from non-sulphide ores by a different process involving three separate stages: Reaction of the ore over quite a long time and on a huge scale with a such as sulphuric acid to produce a very copperII sulphate solution
is extracted in large amounts from the Earth’s crust by mining of sulphide and also oxide . Studies reveal about 80% of is produced by from sulphide . Chalcopyrite is a certain kind of suphide that can be converted to by a different method from silicate, carbonate or sulphate
2.1.6 examine the relationship between the of a metal and position in the reactivity series, for example: aluminium, a reactive metal, is extracted by electrolysis and iron, a less reactive metal, is extracted by chemical… Scotland. National 5. SQA Chemistry. Chemistry in society. Metals. of metals
· Leaching of copper from A sample, 200.0 g, of was weighed and placed into a 1 L beaker and 500.0 ml of 2.0 M HCl was added. mixture was left to equilibrate for 1 h. resulting solution was filtered and filtrate transferred into a volumetric flask then diluted to 1 L