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Uses of limestone. Limestone, quicklime and slaked lime are all used to neutralise excess acidity-which may be caused by acid rain-in lakes and in soils. Limestone is used as a building material, and to purify iron in blast furnaces.It's also used in the manufacture of glass, and of cement (one of the components of concrete).he main uses of limestone and its products. 1  Limestone (CaCO 3) can be used as a building material and in the manufacturing of iron. 2  Glass-heated with sand and soda (sodium carbonate). 3  Cement-heated with clay in a kiln. 4  Concrete-mixed with sand, water and crushed rock. 5  Mortar-mixed with sand and water. 6  Quicklime-heated.
People have used calciumâs compounds for thousands of years â in cement, for example. Limestone [calcium carbonate] was called calx by the Romans. The Romans heated calx, driving off carbon dioxide to leave calcium oxide.To make cement, all you have to do is mix calcium oxide with water.The Romans built vast amphitheaters and aqueducts using calcium oxide cement to bond stones together. (1). Despite the long history of calciumâs compounds, the element itself was not discovered until electricity was available for use in experiments.alcium is used to remove oxygen, sulfur and carbon from alloys. Calcium from limestone is a vital component of Portland cement. Quicklime (CaO) is used in many applications in the chemical industry, such as treatment of drinking water â especially for water softening and arsenic removal, animal waste and wastewater.