It is used as a building material, and not only the rock itself, but also calcium oxide contained in limestone is used for various purposes, so mining is active worldwide.
The places where limestone is most commonly used are places that make cement and smelting iron ore. Other than that, it is used to purify wastewater, and limestone powder is sprayed to remove blood stains from the accident site. It is also used to harden the eggshells by mixing them when feeding chicken. In addition, beautiful limestone is also used as a sculpture stone because it has a characteristic that is easy to carve, and white limestone is used as a bleach to make paper white.
What is used for agricultural purposes is to neutralize soil when it becomes acidic with fertilizers or pesticides or lacks nutrients, and to supplement nutrients.
In engineering, it is used in the process of making sodium carbonate. The sodium carbonate manufacturing process includes the Leblanc process and the Solvay process, but now only the Solvay process is used. The solbay process makes sodium carbonate from sodium chloride and calcium carbonate, and the previous LeBlanc process makes sodium carbonate from sodium chloride, sulfuric acid, charcoal, and calcium carbonate. Sodium carbonate produced in this way is used for glass production.
