Define extractive metallurgy.
[3 marks]List different advantages & Limitations of pyrometallurgical extraction process.
[4 marks]Discuss fluidized bed roasting process and describe importance of Fluidization curve.
[7 marks]What is the purpose of roasting in Copper extraction?
[3 marks]Differentiate in Matte smelting and Reduction smelting.
[4 marks]Write a note on Gaseous reduction of aqueous solutions.
[7 marks]List factors lead to a lower current efficiency in electrolysis of fused salts. Suggest methods to minimize it.
[7 marks]Why carbothermic reduction not used for extraction of Aluminium on commercial scale?
[3 marks]How the metal losses in slag minimized in blast furnace smelting of lead ore.
[4 marks]Explain importance of Ellingham diagrams diagram in pyrometallurgy.
[7 marks]Write limitations of Ellingham diagrams.
[3 marks]Enlist the properties and function of a flux and slag in smelting process.
[4 marks]Write a note on predominance area diagrams.
[7 marks]Differentiate in horizontal and vertical retorts in pyrometallurgical extraction of Zinc.
[3 marks]Explain the Pidgeon process for extraction of magnesium.
[4 marks]Using suitable examples, describe theory of absolute reaction rate.
[7 marks]Why MgO cannot be reduced by carbon to produce magnesium?
[3 marks]Describe the electrolytic refining of nickel.
[4 marks]Discuss Bayer process for alumina production and give the flow sheet.
[7 marks]Define: Drying and Calcination.
[3 marks]Write a note on Electrowinning.
[4 marks]Describe process flow sheet of Cu extraction with all important parameters involved in the process.
[7 marks]Discuss role of cryolite in Electrolysis of Aluminium.
[3 marks]Discuss the different stages in copper converting.
[4 marks]Using flow sheet explain process of tin extraction from its concentrate. Why tin is produced by three stages process?
[7 marks]