Question

what is roasting and calcination?

Answer 1

roasting and calcination are two types of obtaining pure metal from their ores
in case of calcination the ore is put in reaction to melt in absense of air and in roasting the ore is melted down in presence of air

Answer 2

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here is ur answer##

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✔ roasting

it is the process in which a sulphide ore is strongly heated in the presence of air to convert into metal oxide.

2zns +3o2 ----------> 2zno + 2so2.


✔ calcination

it is the process in which a carbonate ore is heated strongly in the absence of air to convert into metal oxide,

znco3 -------------> zno +co2.


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