Question

Differences between calcination and roasting

Answer 1

Answer:

hlo frnd here is ur answer...

Explanation:

roasting is heating of metal or ore in the presence of oxygen .....

calcination is the heating of ore in the absence of oxygen....

hope it helps u friend.....

Answer 2

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Roasting :

• Process is done in presence of air.

• Sulphide ores are converted into oxides.

• Sulphur Dioxide is produced.

• $\large{\sf{2ZnS + 3O_2 \longrightarrow 2ZnO + 2SO_2}}$

$\rule{200}{2}$

Calcination :

• Process is done in absence of air.

• The carbonate ores are converted into oxides.

• Carbon dioxide is produced.

• $\large{\sf{ZnCO_3 \longrightarrow ZnO + CO_2}}$