Lime Kilns were used to produce quicklime through the calcination of limestone (calcium carbonate).

This reaction takes place at 900 °C but a temperature around 1000 °C is usually used to make the reaction precede quickly.

Quicklime was used to make plaster and mortar for building construction.

Lime Kilns date back to the time of the Romans who developed the burning of limestone to make lime for use in building as a mortar.