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 Important Points


 👀Metallurgy is defined as a process that is used for the extraction of metals in their pure form.


   👀The compounds of metals mixed with soil, limestone, sand, and rocks are known as minerals.


👀Metals are commercially extracted from minerals at low cost and minimum effort. These minerals are known as ores.



    👀The concentration of ores:

     👀Concentration is when we remove the unwanted materials like sand, dust, etc.                from  the ores, so we get concentrated ore full of our required metals.



  •  Roasting: In this process, the ore is warmed in a continuous air supply in the furnace at any temperature lower than their melting point.

Eg: 2ZnS + 3O2 → 2ZnO + 2SO2 ( During Sulphide ore Roasting will be there)





  • Calcination: Calcination involves heating when the volatile matter escapes leaving behind the metal oxide. 
  • E.g:

ZnCO3 (s) → ZnO(s) + CO2 (g)  (During Carbonate ore Calcination will be there)



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