Calcining
In calcination, materials are heated in a controlled environment and under a controlled temperature in the presence of oxygen and air to remove volatile components. The release of volatile components during calcination minimizes internal shrinkage in later processing steps that can lead to the development of internal stresses, cracking or warping. In industrial applications, the goal of calcining is to drive off water, remove other volatile materials such as carbon dioxide or to oxidize a material.
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