Editing Industrial processes (section)

===Cement (the paste within concrete)===
* '''[[Calcination]]''' – [[Limestone]], which is largely composed of fossilized [[calcium carbonate]] (CaCO<sub>3</sub>), breaks down at high temperatures into useable [[calcium oxide]] (CaO) and carbon dioxide gas ({{CO2}}), which gets released as a [[by-product]]. This chemical reaction, called calcination, figures most prominently in creating [[cement]] (the paste within [[concrete]]). The reaction is also important in providing calcium oxide to act as a chemical [[flux (metallurgy)|flux]] (removal of impurities) within a [[blast furnace]].
:{{chem2|CaCO3(s) → CaO(s) + CO2(g)}}