What is the role of flux in metallurgical processes?
To remove gangue, certain substances are mixed with it. These are called fluxes. A flux can be basic or acidic. Acidic flux removes basic impurity and basic flux removes acidic impurity.
Flux is also used for increasing conductivity.
SiO2 (Acidic flux)+CaO (Basic impurity) → CaSiO3(Slag)
MgO(Basic flux) + SiO2 (Acidic impurity) → MgSiO3 (Slag)