The reduction of Iron oxides takes place in different temperature ranges .It is carried out in
Open Hearth process
Blast furnace
Electrolytic cell
Bessemer convertor
The method has been used for removing the gangue from sulphide ore’s is
Froth floatation
Smelting
Magnetic seperation
Zone refining
_________ is the most swignificant thermodynamic concept which help the metallurgical transformations .
Internal energy
Enthalpy
Gibb's energy
Activity
The slag formed in blast furnace is
CaO
CaCO3
CaSiO3
FeO
______ is a type of gravity separation.
Concentration
Hydracilic washing
Magnetic separation
Froth floatation method
Van Arkel method is used for the refining of
Zn
Zr
Ti
both a and c
The impurities are more soluble in the melt than in the solid state of the metal .This principle is base on
Electrolytic refining
Liquation
Distillation
Heating of ores are called
Leaching
Calcination
Zone refining is carried out in
Ge
Si
Both a and b
An eg of an oxide ore is
Cryolite
Bauxite
Chalcopyrite
malachite
