Question

The Hall-Heroult process is carried out at a temperature of __________ industrially.

(a) 940-980°C

(b) 200-300°C

(c) 10,000-50,000°C

(d) 50-70°C

The question was posed to me in an internship interview.

This interesting question is from Chemical Processes of Aluminium topic in division Wrought Aluminium Alloys of Aerospace Materials & Processes

Answer 1

Right option is (a) 940-980°C

The best I can explain: The Hall-Heroult process is an extraction process of metals that involves the usage of heat. For this process, when it is being carried out industrially for a large quantity, the temperature at which it is done is between 940-980°C.