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Why copper matte is put in silica lined ...

Why copper matte is put in silica lined converter?

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The copper matte containing `Cu_2 S` and FeS is put in silica lined convertor. Some silica is also added and hot air blast is blown to convert remaining FeS to FeO, which is removed as slag with silica.
`2FeS + 3O_2 to 2FeO + 2SO_2`
`FeO + SiO_2 to FeSi O_3`
`Cu_2 S ` or `CuO` gets converted to copper .
`2Cu_2 S + 3O_2 to 2Cu_2 O + 2SO_2`
`2Cu_2 O + Cu_2 S to 6Cu + SO_2`
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-NCERT FILE (Ncert Textbook Exercises)
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  2. State the role of silica in the metallurgy of copper.

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  3. What is meant by the term "chromatography"?

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  4. What criterion is followed for the selectrion of the stationary phase ...

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  5. Describe a method for refining nickel.

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  6. How can you separate alumina from silica in a bauxite ore associated w...

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  7. Giving examples differentiate between roasting and calcination.

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  8. How is ‘cast iron’ different from ‘pig iron”?

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  9. Differentiate between “minerals” and “ores”.

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  10. Why copper matte is put in silica lined converter?

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  11. (a) Give an example of zone refining of metals. (b) What is the role ...

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  12. How is leaching carried out in case of low grade copper ores?

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  13. Why is zinc not extracted from zinc oxide through reduction using CO?

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  14. The value of Deltaf G^@ for the formation of Cr2 O3 is -540 KJ mol^(-1...

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  15. Out of C and CO, which is better reducing agent for ZnO?

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  16. The choice of a reducing agent in a particular case depends on thermod...

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  17. Name the processes from which chlorine is obtained as a by-product. Wh...

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  18. What is the role of graphite rod in the electrometallurgy of aluminium...

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

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

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