• why is extraction of copper from pyrites more difficult than

    Jun 17, 2007 · It is somewhat complicated. I recommend reading the Wikipedia article below for more detail. A simplified explanation (perhaps overly simplified); the concentration of copper in most ore is fairly low and it needs to be concentrated for extraction, oxide ores can be concentrated relatively inexpensively by leaching with sulfuric acid, while sulfide ores are resistant to leaching and a more

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  • The Extraction of Copper - Chemistry LibreTexts

    The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite (92;(CuFeS_292;)) 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.

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  • METALLURGY OF COPPER-EXTRACTION OF COPPER-BLISTER COPPER

    Blocks of blister copper are used as anodes and thin sheets of pure copper act as cathodes. The cathode plates are coated with graphite in order to remove depositing copper. The electrolyte is copper sulphate (CuSO4) mixed with a little amount of H2SO4 to increase the electrical conductivity.

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  • Copper extraction - Wikipedia

    Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.

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  • Occurrence and extraction of copper form copper pyrites

    Extraction. The extraction of copper also involves many steps. The ore used for extraction is copper pyrites. This ore is crushed, concentrated and then heated in the presence of air. During heating the moisture gets expelled and the copper pyrites gets converted to ferrous sulphide and cuprous sulphide.

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  • How Extraction of Copper from Copper Pyrites? - QS Study

    Sulphide ores such as chalcopyrite are converted to copper by a dissimilar method from silicate, carbonate or sulphate ores. The principal ore of copper is copper pyrite and copper is extracted from this ore. Extraction of copper from copper pyrites involves the following steps Crushing and concentration

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  • Chapter 6 Copper Production Technology

    Chapter 6 Copper Production Technology The last boomin technological innovation for the copper industry occurred in the first two dec-ades of this century, whenopen pit mining, flo- tation concentration,and the reverberatory smelter were adapted to porphyry copper ores. With the exception of leaching-solvent extrac-

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  • What is the role of silica in extraction of Cu from copper

    What is the role of silica in extraction of Cu from copper pyrite ore? Answer: Silica (SiO2) is used in the processes of smelting of copper pyrite (CuFeS2) ore and in conversion of produced copper matte (refined copper sulfide) into a crude metal as a flux (purifying agent).

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  • Extraction of Copper from Copper Pyrite | Lets Learn Nepal

    Copper occurs both in native state as well as in combined state. The chief ore of copper are: Copper Pyrite (CuFeS2) Cuprite (Cu2O) Cupper Glance (Cu2S) Malachite [CuCO3.Cu(OH) 2] Extraction of copper: Copper is extracted from is chief ore, copper pyrite. The various steps involved in the extractions are: a. Crushing and concentration: The

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  • How to Separate Gold from Pyrite

    In general, pyrites yields only a small proportion of its gold contents if it is run over the amalgamated plates, and if it is ground very fine in a pan with mercury the percentage extraction is better. Among the old processes used for the amalgamation of the gold in pyrites may be mentioned the treatment in revolving wooden barrels with

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  • Extraction Of Copper And Zinc From Their Oxides

    As a consequence, the copper so obtained has a blistered appearance. Hence, the product is called blister copper. Blister copper contains 98 per cent copper and is refined through electrolysis. Extraction of zinc: Zinc occurs widely in nature in the form of sulphide, oxide and carbonate ores.

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  • copper extraction and purification

    This page looks at the extraction of copper from its ores, its purification by electrolysis, and some of its uses. Before you get too bogged down in the extraction of copper, make sure that you need it for whatever syllabus you are using.

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  • Chemistry of Copper - Chemistry LibreTexts

    The extraction of copper also involves many steps. The ore used for extraction is copper pyrites, which is crushed, concentrated and then heated in the presence of air. During heating the moisture gets expelled and the copper pyrites gets converted to ferrous sulfide and cuprous sulfide. 92;[ 2CuFeS_2 + O_2 92;rightarrow Cu_2S + 2FeS + SO_2 92;]

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  • Extraction of Copper and Aluminium Study Material for IIT

    Extraction of Copper. The chief and important ore of copper from which the metal is most isolated is copper pyrites (CuFeS 2). Froth floatation process is used for concentrating the ore. The powdered ore is suspended in water and after adding little pine oil is stirred by means of air.

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  • Slag obtained during the extraction of copper from copper py

    Slag obtained during the extraction of copper from copper pyrites is mainly composed of (A) Cu2S (B) FeSiO3 (C) CuSiO3 (D) SiO2. Check Answer and Solution for above question from Chemistry in General Principles and Processes of Isolation of Elements - Tardigrade

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  • Extraction of copper from copper pyrites (CuFeS2) | Mastering

    2. Copper pyrites is converted to a mixture of Cu 2 S and FeS 2CuFeS 2 + O 2-----gt; Cu 2 S + 2FeS + SO 2 3. The sulphides of Cu and Fe are partially oxidized 2Cu 2 S + 3O 2 lt;=====gt; 2Cu 2 O + 2SO 2 2FeS + 3O 2 lt;=====gt; 2FeO + 2SO 2 Smelting in extraction of copper The roasted ore mixed with silica as flux is heated in a blast furnace by a blast of

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  • Chalcopyrite - Wikipedia

    Chalcopyrite (/ k æ l k p a r a t,-k o-/ KAL-ko-PY-ryt) is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has the chemical formula CuFeS 2.It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale.

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  • copper (Cu)

    Extraction. Most copper is extracted from copper pyrites, also known as chalcopyrite. The raw copper extracted from ores is not pure enough for electrical purposes and is further purified by electrolysis.

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  • Extraction of Copper - QS Study

    The extraction process involves the following steps: (i) Condensation of ore: Only 23% Copper (Cu) is present in copper pyrites (CuFeS 2). After concentrating it by oil-froth floatation process, the amount of Cu will be 2030%. copper pyrites) and similar sulphide ores are the commonest ores of copper.

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  • Extraction Of Copper | Mining, Concentration, Smelting

    Copper Mining: The commonest ore used in the extraction of copper is Chalcopyrite (CuFeS 2) also known as Copper Pyrites and other such sulfides.The percentage of copper in the actual ore is too low for direct extraction of copper to be viable.

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  • Why is the extraction of copper from pyrites more difficult

    Therefore, H 2 and C cannot reduce Cu 2 S to Cu. On the other hand, the Gibbs free energy of formation of Cu 2 O is greater than that of CO. Hence, C can reduce Cu 2 O to Cu. C (s) +Cu 2 O (s) 2Cu (s) + CO (g) Hence, the extraction of copper from its pyrite ore is difficult than from its oxide ore through reduction.

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  • Chalcopyrite - Wikipedia

    Chalcopyrite (/ k æ l k p a r a t,-k o-/ KAL-ko-PY-ryt) is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has the chemical formula CuFeS 2.It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale.

    3.5 Scalenohedral (42m), H-M symbol: (4 2m) Opaque TetragonalInquire Now
  • Important Questions for Class 12 Chemistry Chapter 6 General

    Dec 06, 2019 · (b) Why does copper obtained in the extraction from copper pyrites have a blistered appearance? (c) What is the role of depressants in the froth floatation process? (All India 2016) Answer: (a) Electrolytic refining. Here the impure metal is made to act as anode and a strip of the pure metal is used as cathode.

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  • Extraction of Copper from Copper pyrite | Grade 12 Science Notes

    As long as Fes is present in the mixture Cu 2 O cant be formed as copper has higher affinity for sulphur than oxygen. In molten state FeS amp; Cu 2 S are missible and the molten mixture of Cu 2 S and FeS is called copper malte. The lower end of blast furnace has two openings for slag and copper matte.

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  • Notes OCCURRENCE AND EXTRACTION OF METALS

    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

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  • Extraction Of Copper From Copper Pyrites

    Why Is The Extraction Of Copper From Pyrites More . The gibbs free energy formation f g of cu 2 s is less than that of h 2 s and cs 2erefore, h 2 and c cannot reduce cu 2 s to cuon the other hand, the gibbs free energy formation of cu 2 o is greater than that of co hence, c can reduce cu 2 o to cuc s cu 2 o s 2cu s co g hence, the extraction of copper from its pyrite ore is difficult than from

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  • Copper: Occurrence, principles of extraction, Properties and Uses

    ii) Cuprite or Ruby copper, Cu 2 O. iii) Copper glance, Cu 2 S. The chief ore of copper is copper pyrite. It yields nearly 76% of the world production of copper. Extraction from copper pyrites . Extraction of copper from copper pyrites involves the following steps. 1. Crushing and concentration

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  • What are the important ores of copper? How is copper

    The main copper sulphide minerals are: Chalcopyrite (CuFeS2) Chalcocite (Cu2S), Covellite (CuS), Bornite (Cu5FeS4), Tetrahedrite ((Cu,Fe)12Sb4S13) and Tnargite (Cu3AsS4).

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