Calcium carbonate

Calcium carbonate introduction

Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite (most notably as limestone, which is a type of sedimentary rock consisting mainly of calcite) and is the main component of pearls and the shells of marine organisms, snails, and eggs. Calcium carbonate is the active ingredient in agricultural lime and is created when calcium ions in hard water react with carbonate ions to create limescale. It is medicinally used as a calcium supplement or as an antacid, but excessive consumption can be hazardous.

The main use of calcium carbonate is in the construction industry, either as a building material, or limestone aggregate for road building, as an ingredient of cement, or as the starting material for the preparation of builders’ lime by burning in a kiln. However, because of weathering mainly caused by acid rain, calcium carbonate (in limestone form) is no longer used for building purposes on its own, but only as a raw primary substance for building materials.

Calcium carbonate processes and equipment

According to the different requirements, our company can provide several production processes and equipment:


Limestone (calcium carbonate) is the most important raw material for cement production. By continuously technical innovation, research and development, we have finished more than 30 projects with consummate technique, first-class quality and overall service. Based on our endeavor, we have already possessed independent intellectual property rights on main process technologies and equipment.


It can be used to produce lime. Lime can be divided into quick lime and hydrated lime. Calcination with rotary kiln and other equipment can not only shorten the firing time, but also improve the output and quality of lime firing, and greatly improve the production efficiency of enterprises. In addition, it can be used to produce active lime, but the activation process needs to be added.


Micro powder production line, providing a complete set of process and equipment for the production of ground calcium carbonate. Our products have been delivered to around the country, and gain a good reputation of product quality. The whole system has high automation, stable operation, and can achieve Long-term continuous operation.

What can we do for you?

LCDRI has strong technical skills. It has been nominated as one of the Ten Best Design and Research Institutes of Cement Industry in 2009, there are 126 technical staff in our institute, among which 46 of them have senior professional title and 61 of them have middle-class professional title. In recent years, 3 centers have settled down: Luoyang Cement Engineering Research Center, Henan Special Cement Engineering Research Center as well as Cement Technology Innovation Platform of Science and Technology ministry. Our company is a well-known and high-praised company in building material industry. We possess 12 National Excellent Engineering Design awards, more than 20 provincial science and technology awards and more than 100 patents.