Extraction of Zinc | Application Of Zinc Refining Process
The reaction of the final step of extraction of zinc is (2 ZnO + C > 2 Zn + CO^{2}) Since, the boiling point of Zinc is way back at 1180 K, the zinc formed immediately vaporizes and distills over leaving behind nonvolatile impurities such as Cadmium, Lead and Iron. This gas containing zinc vapours is collected and cooled to yield solid zinc.