How is zinc extracted from zinc blende?

1.	How is zinc extracted from zinc blende?
Answer» Zinc blende is ZnS. For the extraction of zinc from zinc blende, the ore is first concentrated by the method of froth floatation. The concentrated ore is then roasted by heating the ore in the presence of oxygen to give ZnO releasing SO₂. The ZnS is further reduced using coke at temperature of 673 k giving zinc metal. 2ZnS + 3O₂ → 2ZnO + 2SO₂ ZnO + C → Zn + CO

Answer»

Zinc blende is ZnS. For the extraction of zinc from zinc blende, the ore is first concentrated by the method of froth floatation. The concentrated ore is then roasted by heating the ore in the presence of oxygen to give ZnO releasing SO₂. The ZnS is further reduced using coke at temperature of 673 k giving zinc metal.

2ZnS + 3O₂ → 2ZnO + 2SO₂

ZnO + C → Zn + CO

Discussion

No Comment Found

Related InterviewSolutions

What is the role of collectors in Froth Floatation process?
Name the method used for removing gangue from sulphide ores.
Name one ore each for iron & copper & give their chemical compositions.
Give an example when an element is extracted by oxidation.
How is zinc extracted from zinc blende?
How is gold extracted from its ore?
Give the reactions that occur after the copper matte have been fed into silica lined converter.
Why is coke preferred over CO for reducing FeO?
Explain the process of magnetic separation for concentration of ores.
What is Ores?

How is zinc extracted from zinc blende?

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment