Question

What is the term given to the extraction of aluminium from bauxite by using electrochemical process?

(a) Baeyer’s process

(b) Hall-Heroult process

(c) Mc-Arthur process

(d) Blasts process

The question was posed to me in quiz.

My question comes from Electrochemical Principles of Metallurgy topic in portion General Principles and Processes of Isolation of Elements of Chemistry – Class 12

Answer 1

Right answer is (b) Hall-Heroult process

The best I can explain: Hall-Heroult process is a smelting process to reduce bauxite to a nearly pure aluminium. Bauxite is dissolved in a molten electrolyte composed of sodium, fluorine and aluminium and is maintained at a high temperature. In this process aluminium is accumulated at the cathode and oxygen gas at the anode.