Question

Difference between roasting and calcination​

Answer 1

Here's your answer mate

1. ROASTING: :-

The sulphide ores are are converted into oxides by heating strongly in the presence of excess air.The Process is called roasting.

2ZnS+3O2 ----------> 2ZnO+2SO2

2. CALCINATION: -

The carbonate ores are changed into oxides by heating strongly in limited air. This process is called Calcination.

ZnCO3 ---------->ZnO+CO2

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Answer 2

Answer:

RAOSTING IS CARRIED OUT BY THE HEATING ORE IN THE PRESENCE OF OXYGEN TO FORM METAL OXIDE .

CALCINATION IS CARRIED OUT BY THE HEATING ORE IN THE ABSENCE OF AIR TO FORM METAL OXIDES

ROASTING - SULPHIDE ORE CONVERTED INTO ITS OXIDE

CALCINATION- CARBONATE ORE CONVERTED INTO ITS OXIDE

Explanation:

OR

THE SULPIDE ORES ARE CONVERTED INTO ITS OXIDE BY HEATING STRONGLY IN THE PRESENCE OF EXCESS AIR IS CALLED ROASTING

THE CARBONATE ORE CONVERTED INTO ITS OXIDE BY HEATING STRONGLY IN LIMITED AIR IS CALLED CALCINATION