What are roasting and calcination? – InterviewSolution

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1.	What are roasting and calcination?
Answer» Solution :ROASTING : Roasting is the method, USUALLY applied for the conversion of sulphide ORES into their oxides. In this method, the concentratedore is oxidized by heating it with excess of oxygen in a suitable furnace below the melting point of the metal. CALCINATION : It is the process in which the concentrated ore is strongly heated in the absence of air. Hence ore is CONVERTED into their oxides.

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