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Heating of pyrites in air for oxidation ...

Heating of pyrites in air for oxidation of sulphur is called
Heating of ore in presene of air to remove sulphure impurities is called

A

Roasting

B

Calcination

C

Smelting

D

Slagging

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The correct Answer is:
A
Roasting involves heating of the ore either alone or with some other material usually in presence of air below its fusion temperature. In roasting, definite chemical changes like oxidation, chlorination etc., take place
`S + O_2 rarr SO_2`
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ERRORLESS-GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS-NCERT BASED QUESTIONS (ROASTING & CALCINATION)
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