What are the important ores of copper? How is copper extracted from co

1.	What are the important ores of copper? How is copper extracted from copper pyrites?
Answer» Main Ores of copper is: (i) Copper pyrites (CuFeS₂), (ii) cuprite (Cu₂S) Extraction of copper: Copper is extracted to.the copper pyrite is CuFeS₂. At first free sulphur is oxidies after roasting in laboratory furnance in presence of air S + O₂ → SO₂ 4AS + 3O₂ → 2AS₂O₃ 2CuFeS₂ + O₂ → Cu₂S + 2FeS + SO₂ Smelting in blast furnance in presence of air: 2FeS + 3O₂ → 2FeO + 2SO₂ FeO + SiO₂ → FeSiO₃(Slag) Bessemerisation in bessemer converter in presence of air 2FeS + 3O₂ → 2FeO + 2SO₂ FeO + SiO₂ → FeSiO₃ 2Cu₂S + 3O₂ → 2Cu₂O + 2SO₂ 2Cu₂O + Cu₂S → 6Cu + SO₂ We get blister copper (98% + impurities) Electrolytic refining: Anode → impure copper plates cathode → Pure copper plates Electrolyte → CuSO + Solution + H₂SO₄ Pure copper deposited at cathode.

What are the important ores of copper? How is copper extracted from copper pyrites?

Answer»

Main Ores of copper is: (i) Copper pyrites (CuFeS₂), (ii) cuprite (Cu₂S)

Extraction of copper: Copper is extracted to.the copper pyrite is CuFeS₂.

At first free sulphur is oxidies after roasting in laboratory furnance in presence of air

S + O₂ → SO₂

4AS + 3O₂ → 2AS₂O₃

2CuFeS₂ + O₂ → Cu₂S + 2FeS + SO₂

Smelting in blast furnance in presence of air:

2FeS + 3O₂ → 2FeO + 2SO₂

FeO + SiO₂ → FeSiO₃(Slag)

Bessemerisation in bessemer converter in presence of air

2FeS + 3O₂ → 2FeO + 2SO₂

FeO + SiO₂ → FeSiO₃

2Cu₂S + 3O₂ → 2Cu₂O + 2SO₂

2Cu₂O + Cu₂S → 6Cu + SO₂

We get blister copper (98% + impurities)

Electrolytic refining:

Anode → impure copper plates

cathode → Pure copper plates Electrolyte → CuSO + Solution + H₂SO₄

Pure copper deposited at cathode.

Discussion

No Comment Found

Related InterviewSolutions

What is the difference between multimolecular and macromolecular collids ? Give one example of each . How are associated colloids different from these two types of colloids ?
Gastrointestinal irritation, cardiovascular effects, including tachycardia,arrhythmias, and orthostatic hypotension, mental disturbances, and withdrawalare possible adverse effects of: A. Amantadine B. Benztropine C. Levodopa D. selegiline
Match the column I and IIColumn-IColumn-II(a)Parasitism(i)++(b)Commensalism(ii)+ –(c)Amensalism(iii)0 + (d)Mutualism(iv)0 –(1) (a) - iii, (b) - ii, (c) - iv, (d) - i (2) (a) - i, (b) - ii, (c) - iii, (d) - iv (3) (a) - ii, (b) - iii, (c) - i, (d) - iv (4) (a) - ii, (b) - iii, (c) - iv, (d) - i
Assertion: In commensalism, one organism is benefitted and other is unaffected Reason: Cattle egret bird and cattle is an example of commensalism (1) If both assertion and reason are true and reason is the correct explanation of assertion. (2) If both assertion and reason are true but reason is not the correct explanation of assertion. (3) If assertion is true but reason is false. (4) If both assertion and reason are false.
In charge of Calcutta Mint between 1832 to 1838, he studied and deciphered Ashokan rocks and pillars. His essays on antiquities are considered as classics. Hint: Varanasi. Who are we referring to?
Nature of climax community depends upon(A) Climate (B) Water (C) Soil fertility (D) Temperature
How do biofertilisers enrich the fertility of the soil?
Read carefully the passage and select the correct answer out of given four options:Biofertilizers are organisms that enrich nutrient quality of the soil. The important sources of biofertilizers are bacteria, fungi and cyanobacteria. The symbiotic association of Rhizobium with the root nodules of leguminous plants is the common example. These bacteria convert atmospheric nitrogen into nitrogenous compound and fix in the soil.The organisms which enrich the nutrient quality of the soil are called(a) Microbes(b) Biofertilizers(c) Yeast(d) Biopesticides
Electrophoresis is an essential procedure that needs to be employed in genetic fingerprinting why?
Assertion: Angiosperms form endosperm after fertilization and is diploid. Reason: In gymnosperms, endosperm is formed before fertilization and is triploid. a. Both assertion and reason are true, and reason is the correct explanation of assertion. b. Both assertion and reason are true, but reason is not the correct explanation of assertion. c. Assertion is true but reason is false. d. Both assertion and reason are false.