Question

What is the difference between roasting and calcinations? Give one example for each?

Answer 1

Answer:

rotting required presence of O2 molecules but in calcination don't required aired conditions

Explanation:

examples can be found in www.google.com

Answer 2

Dear Student,

◆ Roasting -

• Roasting is heating of metal ore in excess oxygen.
• Preferred for sulphide ores.
• SO2 is produced during the process.
• For example,

2PbS + 3O2 + ∆ --> 2PbO + 2SO2

◆ Calcination -

• Calcination is heating of metal ore in limited oxygen.
• Preferred for carbonate ores.
• CO2 is produced during the process.
• For example,

CaCO3 + ∆ --> CaO + CO2

Thanks dear. Hope that was helpful...