Calcium in its elemental form has fewindustrial uses, but its compounds with other elements are widely used.
Calcium compounds, rocks, and minerals such as limestone are also used in construction.
Gypsum is used to make plaster of Paris and drywall.
Calcium carbonate is used medicinally to make antacid. It is also used as a phosphate binder which is use to treat hyperphosphatemia.
It is also used as an alloying agent for aluminium, beryllium, copper, lead and magnesium alloys.
Other applications include toothpaste, and fertilizer production.