Slaked lime is an important material to control air pollution. Lime is also important as a raw material in chemical manufacture, water treatment, papermaking and as concrete in the construction industry. The largest use of plaster of Paris is in the building industry as wall plasters and wall boards. It is used for architectural decorations and in the medical field for the setting of broken bones. In addition it is used as moulds in the production of ceramics and of metallic jewellry.
Calcium is also presence in our bodies.
In an adult, there is about 1 kg calcium in the teeth and bones. Calcium also plays a role in regulating heartbeat.