Science, asked by akashpriya27, 1 year ago

What is roasting and calcination? Please answer shortly

Answers

Answered by nanudhull464
0

roasting is process of heating a ore in the presence of oxygen......

but calcination is a process of heating a ore in absence of oxygen


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Answered by Ataraxia
0

CALCINATION IS THE PROCESS OF HEATING CONCENTRATED ORE IN THE ABSENCE OF AIR AT A TEMPERATURE BELOW ITS MELTING POINT.CARBONATES AND HYDROXIDES OF METALS DECOMPOSE TO FORM OXIDES.

ROASTING IS THE PROCESS OF HEATING CONCENTRATED ORE IN A CURRENT OF AIR AT A TEMPERATURE BELOW ITS MELTING POINT.WHWN THE CONCENTRATED ORE IS SUBJECTED TO ROASTING ,THE MOISTURE PRESENT IN IT IS REMOVED AS VAPOUR.

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