Chemistry, asked by priyanshukrgupta, 11 months ago

what is calcination and roasting?

Answers

Answered by shweta016

Explanation:

Roasting :-

Roasting is the process in which the ore is heated below its melting point in presence of air to oxidise the impurities.

Calcination :-

Calcination is the process of heating the ore below its melting point an absence of air to remove volatile impurities like arsenic etc.

I hope you understand .

Answered by Ataraxia

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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