what is difference between Calcination and roasting?
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what is difference between Calcination and roasting?
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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❤️
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.