Since Lime is found everywhere in the world and in all countries, lime is exported to many countries. Countries such as the United States, China, India, Russia, Iran and Brazil are among the main producers and exporters of lime to world markets. These countries have used their rich lime resources and can meet the international demand for lime. Lime has a significant export value due to its wide use in various industries. As an important source of calcium oxide (CaO), lime is used in the production of cement, steel, glass, paper, Chemicals and other industries. Therefore, countries that have rich resources of lime can export to world markets as suppliers of lime.

The Chemical formula of lime is CaO. Lime is a chemical compound known as calcium oxide. Lime is used as an alloying material in Steel production. Calcined lime is used as a molten material in the process of steel production and exhaust gas purification. Therefore, the steel industry in countries with high steel production can lead to the export of lime. Lime is used as a main ingredient in Glass production. Calcined lime is used as the main material in the process of glass production and regulation of glass properties. Countries that have a strong glass industry can produce and supply lime as an export product. Lime is used as a main ingredient in the production of Building materials such as cement, mortar and limestone. Cement and mortar are used as the main materials in the construction and repair of buildings.

The most and most important application of lime is in the construction industry and cement consumption. Lime is used as a raw material in the production of cement. In the cement production process, lime along with other limestones and raw materials such as limestone ash and Aluminum ash is thermally calcined to convert into calcium oxide (CaO). Calcium oxide is then converted into calcium hydroxide (Ca(OH)2) and other cement compounds by using other citrus fruits and raw materials, along with water. This process plays a vital role in the production of cement and is widely used in the construction industry as the main ingredient of cement.

Cement is one of the basic materials in construction and is used in making concrete, mortar, cement spraying and all kinds of building structures. Also, cement is used as an important factor in various industries such as water and sewage industry, oil and gas industry, and Food industry. The use of lime in the production of cement and the wide use of cement in the construction industry are considered as the most and most important use of lime.

The second most important application of lime is in the steel industry. Lime is used as an alloying material in the steel production process. In steelmaking, lime in the form of calcium oxide (CaO) or calcium oxide is used as an active substance in absorbing impurities and pollutants in steel refining processes. In the process of steel production, lime is created as an alloy material in raw materials including iron ore, coke and limestone. Lime combines with impurities in iron , such as silica (SiO2) and phosphorus (P), to form insoluble compounds such as calcium silicate (CaSiO3) and calcium phosphate (Ca3(PO4)2). These insoluble compounds in Metal form lava and are separated as inclusions or slag.

Production and export of lime to countries with active construction and strong cement industry can have an export advantage. Lime is used as a material used in the water and sewage industry. Lime is used as a purifying agent in the water and wastewater treatment process. Therefore, exporting lime to countries in need of advanced water and wastewater treatment technologies can be profitable. Lime is used as an alloying material in paper production. Lime is used in paper bleaching process and paper pH control. Countries with a strong paper industry can provide the necessary raw materials to this industry by producing and exporting lime.