what is calicination
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The IUPAC defines calcination as "heating to high temperatures in air or oxygen". However, calcination is also used to mean a thermal treatment process in the absence or limited supply of air or oxygen applied to ores and other solid materials to bring about a thermal decomposition.
Explanation:
Calcination: The ore is heated to a high temperature below its melting point in the absence of air or in a limited supply of air. ... It makes the ore porous. For example, zinc carbonate decomposes to give zinc oxide and carbon dioxide
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