Calcium carbonate is a kind of inorganic compounds, commonly known as CaCO: limestone, limestone, limestone, marble etc.. Main ingredients: calcite, is a kind of compound, chemical formula is CaCO, neutral, basically insoluble in water, soluble in hydrochloric acid. It is common on the earth substances exist in aragonite, calcite, chalk, limestone, marble, Shi Huihua rock, also is the main component of animal bones or shell. Calcium carbonate is an important building material, widely used in industry. Calcium carbonate is composed of calcium and carbonate ions combine to form, so it is also calcium carbonate

Light calcium carbonate
Also known as precipitated calcium carbonate, calcium carbonate is referred to as, limestone and other raw materials of calcined lime (mainly calcium oxide) and carbon dioxide, and water digestion lime lime (mainly calcium hydroxide), and then pass into the carbonization of milk of lime to produce calcium carbonate carbon dioxide precipitation, finally by dehydration, drying and crushing the system. Well. Or sodium carbonate and calcium chloride were used to carry out the complex decomposition reaction to produce calcium carbonate precipitation, and then through the dehydration, drying and crushing and made. The settlement volume (2.4-2.8mL/g) of the light calcium carbonate is larger than that of the ground calcium carbonate (1.1-1.9mL/g), so it is called the light calcium carbonate.
Properties: white powder. Tasteless, without odor. Specific gravity of about 2.71. Decomposition at 896.6 ~ 825. Melting point 1339. There are two shaped morphology of amorphous and crystalline, crystal shape can be divided into six orthorhombic and hexagonal columnar or diamond. Difficult to dissolve in water and alcohol. Soluble in acid, while the release of carbon dioxide, an exothermic reaction. Also soluble in ammonium chloride solution. Stable in the air, there is a slight moisture absorption capacity.
Use: can be used for rubber, plastics, paper, paint and ink and other industries of the filler. Widely used in the production of organic synthesis, metallurgy, glass and asbestos. Acid poisoning agent, gastric and duodenal ulcer disease antacids, can also be used as an antidote to the industrial wastewater containing SO, emissions SO elimination agent, dairy feed additive and anti adhesive felt. Can also be used as a dentifrice, toothpaste and other cosmetics raw materials.
Manufacturing process and process
Carbonization method: Department of the limestone and anthracite mixed according to a certain proportion after calcination at high temperature, water digestion, carbon dioxide, and then by centrifugal dewatering, drying, cooling, crushing and sieving to obtain the product.