Question

diff. beetween calination and roasting

Answer 1

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➡HEATING OF THE CONCENTRATED ORE IN THE PRESENCE OF AIR BEFORE IT REACHES TO ITS MELTING POINT IS KNOWN AS ROASTING.

➡HEATING OF THE CONCENTRATED ORE IN THE ABSENCE OF AIR BEFORE IT REACHES TO ITS MELTING POINT IS KNOWN AS CALCINATION.



HOPE IT HELPS

Answer 2

calcination is the process of heating or in absence of air so as to remove moisture and volatile impurities and to convert carbonate ores into oxides
roasting is the process in which Ore is heated in the presence of air so as to obtain metal oxide which can be reduced easily to get free metal