Chemistry is the foundation for all lime applications

Lime Cycle

The Lime Cycle is one of nature's best known examples of chemistry. This classic series of chemical reactions is the basis for numerous applications, many of which affect our lives every day.


Lime Cycle Infographic

The image above illustrates how chalk or limestone (calcium carbonate) turns into quicklime after heating, then into hydrated lime (slaked lime or calcium hydroxide) after adding water and finally back into chalk by combining with carbon dioxide from the air. The reactions involved in lime manufacture are:


Calcining or burning of chalk to produce quicklime

Precipitated Calcium Carbonate Chemical Formula

Hydration or slaking of quicklime to produce hydrated lime

Hydrated Lime Chemical Formula

Carbonation of hydrated lime to produce chalk (sometimes known as precipitated calcium carbonate or PCC).

Quicklime Chemical Formula

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