Which of the following are used in aluminium extraction? Cryolite feld – InterviewSolution

1.	Which of the following are used in aluminium extraction? Cryolite feldspar, carbon, ferrosilicon, iron, Nal, Calcium carbide, nitrogen gas, NaOH.
Answer» SOLUTION :In the extraction of .Al.. Cryolite USED to decrease the M.pt. of `Al_(2)O_(3)` and increases it.s conductivity. Gas carbon lined in side the iron tank acts as cathode. Anode is BUNCH of Carbon RODS. NaOH used as leaching agent. In serpecks process `Al_(2)O_(3)` heated with coke at `1800^(@)C` in the PRESENCE of `N_(2)` gas `Al_(2)O_(3)+3C+N_(3) to 2AIN+3CO` `:. 5` components are used in Al extraction.

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