Introduction to calcium carbonate

Calcium carbonate is an inorganic compound. The chemical formula is CaCO₃. Commonly known as limestone, limestone, stone powder, marble, etc. Calcium carbonate is alkaline. not soluble in water. Dissolved in hydrochloric acid. It is one of the common substances on the earth. Exist in aragonite, calcite, chalk, limestone, marble, travertine and other rocks. It is also the main component of animal bones or shells. Calcium carbonate is also an important building material. It is widely used in industry.

According to different production methods. Calcium carbonate can be divided into heavy calcium carbonate, light calcium carbonate, colloidal calcium carbonate and crystalline calcium carbonate.

Calcium carbonate is a valuable resource with a wide range of uses. Limestone is the trade name of limestone as a mineral raw material. Limestone has been widely used in the history of human civilization. Because it is widely distributed. It is easily available in nature. As an important building material. It has a long history of mining. In modern industry. Limestone is the main raw material for the manufacture of cement, lime and calcium carbide. It is an indispensable flux limestone in the metallurgical industry. Good limestone is ground with superfine powder. It is widely used in the manufacture of paper, rubber, paint, coating, medicine, cosmetics, feed, sealing, bonding, polishing and other products. According to incomplete statistics. The ratio of limestone consumed in cement production to limestone consumed in construction stone, lime production, metallurgical flux and ultrafine calcium carbonate is 1:3. Limestone is a non-renewable resource. With the continuous progress of science and technology and the development of nanotechnology. The application field of limestone will be further expanded.

Calcium carbonate is mainly used as a paper filler in papermaking. In order to ensure a certain strength and whiteness of the paper. lower the cost. A large amount of calcium carbonate is added to the paper. The widespread application of calcium carbonate in the paper industry is based on the transition of the international paper industry from acidic papermaking processes to alkaline or neutral papermaking processes. Therefore, cheap calcium carbonate can be widely used instead of talc and china clay.