difference between calcination nd roasting with examples....it's my pic....
Answers
Answered by
7
calcination
it is the process in which carbonate ore is heated strongly in the absence of air to convert it into metal oxide.for eg ZnCo3 is heated strongly in the absence of air ,that is, it decomposes to firm zinc oxide and carbon doixide.
roastng is the process in which sulphide ore is stringly heated in presence of air to convert it into metal oxide.
for eg when zinc sulphide is strongly heated in air (roasted)it forms zinc oxide and sulphur dioxide.
the metal oxides obtained by calcination or riasting of ores are co verted to free metal by using reducing agets like carbon ,aluminium etc.
it is the process in which carbonate ore is heated strongly in the absence of air to convert it into metal oxide.for eg ZnCo3 is heated strongly in the absence of air ,that is, it decomposes to firm zinc oxide and carbon doixide.
roastng is the process in which sulphide ore is stringly heated in presence of air to convert it into metal oxide.
for eg when zinc sulphide is strongly heated in air (roasted)it forms zinc oxide and sulphur dioxide.
the metal oxides obtained by calcination or riasting of ores are co verted to free metal by using reducing agets like carbon ,aluminium etc.
iloveangle:
I take sorry for all
Bye
And sorry last time
Answered by
5
Roasting is mostly done for sulfide minerals while calcination is mostly applied in decomposition of carbonate ores. Roasting is not used for dehydrating an ore while calcination can be used to drive out moisture from an ore. In roasting, sulfur dioxide is released while in calcination carbon dioxide is released.
Hope it helps u ❤❤
Similar questions