MetallurgyHardBloom L3
Question
The major role of fluorspar (CaF2) which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6) is
Options
A.as a catalyst
B.to make the fused mixture very conducting
C.to lower the melting temperature of the mixture
D.to decrease the rate of oxidation of carbon at the anode.
Solution
Sol. CaF2 + Na3AlF6 are added during electrolytic reduction of Aluminnium to lower to M.P. & to increase the conductivity.
Create a free account to view solution
View Solution Free