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Explain smelting process in the extracti...

Explain smelting process in the extraction of copper.

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The roasted ore is mixed with a little coke and sand (Sillica) and smelted in a blast furnace and fused.A blast of air , necessary for the combustion of coke, is blown through the tuyeres present at the base of the furnace. The oxidation of the suphides of copper and iron will be completed further. A Slag of iron silicate is formed according to the reactions given below :
`{:(2FeS+3O_(2)rarr2FeO+2SO_(2)),(FeO+SiO_(2)rarrFe SiO_(3)),("Ferrous Silicate (Slag)"),(Cu_(2)O+FeSrarrCu_(2)S+FeO):}`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-GENERAL PRINCIPLES OF MMETALLURGY-SHORT ANSWER QUESTIONS
  1. Copper can be extracted by hydrometallurgy but not Zinc -explain.

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  2. Why is the extraction of copper form pyries more difficult then that f...

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  3. Explain Zone refining.

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  4. Write down the chemical reactions taking place in the extraction of zi...

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  5. Write down the chemical reactions taking place in different zones in t...

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  6. How is alumina separated from silica in the bauxite ore associated wit...

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  7. Give examples to differentiate roasting and calcination.

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  8. The Value of DeltaG^(@) for the formation of Cr(2)O(3) is -"540KJ mol...

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  9. What is the role of graphite rod in the electromellurgy of aluminium?

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  10. Outline the principles of refining of metals by the following methods....

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  11. Predict conditions under which Al might be expected to reduce MgO.

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  12. Explain the purification of sulphide ore by Froth Floatation Method.

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  13. Explain the process of leaching of alumina from bauxite.

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  14. What is Ellingham diagharm ? What information can be known from this i...

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  15. How is copper extracted from copper pyrites ?

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  16. Explain the extraction of Zinc form Zinc blende.

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  17. Explain smelting process in the extraction of copper.

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  18. Explain electrometallurgy with an example.

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  19. Explain the process of leaching of alumina from bauxite.

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