Metallurgical operations-Step 3 - Reduction of oxide(Pyrometallurgy of zinc)

Question 1

Name the sulpide ore of zinc

Answer 1

zinc blende-ZnS

Question 2

Name the oxide ore of zinc

Answer 2

Zincite-ZnO

Question 3

Name the carbonate ore of zinc

Answer 3

Calamine- ZnCO3

Question 4

Explain the pyrometallurgy of zinc

Answer 4

The reduction of zinc oxide is done using coke. The temperature in this case is higher than that in case of copper. For the purpose of heating, the oxide is made into brickettes with coke and clay.
ZnO + C (coke) → Zn + CO ; temp- 1673 K
The metal is distilled off and collected by rapid chilling.