Calcium carbonate is an inorganic compound, commonly known as lime, limestone, marble and so on. The chemical formula is CaCO₃, neutral, basically insoluble in water, soluble in hydrochloric acid. It is a common substance on the earth. It exists in aragonite, calcite, chalk, limestone, marble, limestone and other rocks. It is also the main component of animal skeleton or shell. Calcium carbonate is formed by the combination of calcium ions and carbonate ions. Therefore, calcium carbonate is also carbonate. Calcium carbonate is divided into two categories: heavy calcium carbonate and light calcium carbonate. Heavy calcium carbonate and light calcium carbonate react differently because of their different particle size, crystal shape and interfacial properties. For this reason, active calcium carbonate, papermaking calcium carbonate, plastics calcium carbonate, nanometer calcium carbonate, edible calcium carbonate, medicinal calcium carbonate, chemical calcium carbonate, coating carbonate are also extended. Calcium and many other varieties and different uses of calcium carbonate varieties.

Calcium carbonate Processing technology

Calcium carbonate has a wide range of uses, but must be processed to different fineness before further use. Dry production process of heavy calcium carbonate: first, selected from the quarry of calcite, limestone, chalk, shells, etc., in order to remove gangue; then crushing the stones with crusher, then using calcium carbonate grinder fine limestone powder is crushed and classified by a classifier. The powder which meets the requirement of particle size is packaged and stored as a product. Otherwise, it is returned to the calcium carbonate grinder to grind again. Vanguard calcium carbonate grinding equipment is mainly composed of grinder main engine, powder separator, fan, jaw crusher, bucket elevator, electromagnetic vibration feeder, storage bin, bag dust collector, pipeline device, cyclone powder collector, electric control cabinet, motor and so on. Calcium carbonate grinder is a vertical structure with small footprint and the transmission device adopt sealed gear box and pulley, stable transmission and reliable operation. The machine has high wear-resistant performance, because important parts are made of high-quality steel, meanwhile, wearing parts are made of high-performance wear-resistant materials. The electric system of the grinder adopts centralized control, advanced and reasonable selection, high degree of automation. Vibrating feeder, easy to adjust and save electricity with small volume and light weight.
Calcium carbonate is often used in the construction and paper industry, and it can be used as an additive in the food industry. Calcium carbonate within 200 mesh can be used in various feed additives with a calcium content of more than 55.6 and no harmful ingredients. 250 mesh to 300 mesh calcium carbonate is used for plastics, rubber, paint, waterproof materials factory raw materials and internal and external wall painting, whiteness above 85 degrees. 350 mesh to 400 mesh calcium carbonate is used to make buckle boards, drop pipes, chemical industry, and whiteness is above 93 degrees. 400 mesh to 600 mesh calcium carbonate can be used in toothpaste paste, soap, and whiteness is above 94 degrees. 800 mesh calcium carbonate is used for rubber, plastic, cable, PVC, and the whiteness is above 94 degrees. 1250 mesh calcium carbonate can be used in PVC, PE, paint, coating grade products, paper primer, paper surface coating, whiteness above 95 degrees, with high purity, high whiteness, non-toxic, odorless, low oil quality, low hardness and other characteristics.

Application fields Through the deep processing, Calcium carbonate can be widely used in the following industries.