1.

Write the different stages involved in metallurgy.

Answer»

a. Concentration of the ore methods are: 

  • Levigation/hydraulic washing 
  • Froth floatation 
  • Magnetic separation 
  • Leaching 

b. Extraction of metal from the concentrated ore has 2 stages. 

  • Conversion of ore into its oxide. The different methods are Calcination, Roasting etc. 
  • Reduction of oxidised ore using suit-‘ able reducing agents.

c. Refining of metals. Different methods are: 

  • Liquation 
  • Distillation 
  • Electrolytic refining


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