Roasting
Heating ore upto red hot below its Melting point.
Removing volatile impurities.
Formation of metla oxide
Calcination
Heating ore upto red hot below its Melting point.
Removing volatile impurities.
Formation of metla oxide
Roasting
Heating ore upto red hot below its Melting point.
Removing volatile impurities.
Formation of metla oxide
Calcination
Heating ore upto red hot below its Melting point.
Removing volatile impurities.
Formation of metla oxide