|Place of Origin:||CHINA|
|Minimum Order Quantity:||1ton|
|Price:||1 usd per ton|
|Packaging Details:||in 25kg bag|
|Payment Terms:||T/T, L/C|
|Name:||Calcium Carbonate Powder||Color:||White|
|Packing:||25 Kgs Bag||Location:||Hezhou, Guangxi|
calcium carbonate white powder china factory building material manufacturing cement, lime, and calcium carbide
Calcium carbonate is an inorganic compound with the chemical formula CaCO 3, and is the main component of limestone, marble, and other materials. Calcium carbonate is usually a white crystal, odorless, insoluble in water, and easily reacts with acids to release carbon dioxide. It is one of the common substances on Earth, found in rocks such as aragonite, calcite, chalk, limestone, marble, and limestone. It is also the main component of certain animal bones or shells. Calcium carbonate is also an important building material with a wide range of industrial applications.
Used in departments such as papermaking, metallurgy, glass, alkali production, rubber, pharmaceuticals, pigments, organic chemicals, etc
Calcium carbonate is a white fine crystalline powder, odorless and odorless. There are two forms: amorphous and crystalline. In the crystal form, it can also be divided into rhombic and hexagonal crystal systems (anhydrous calcium carbonate is a colorless rhombic crystal, and hexahydrate calcium carbonate is a colorless monoclinic crystal ), which are columnar or rhombic in shape, with a density of 2.93g/cm3. The melting point is 1339 ℃ (decomposed at 825-896.6 ℃), and the melting point is 1289 ℃ at 10.7 MPa. Almost insoluble in water, soluble in water containing ammonium salts or iron trioxide, insoluble in alcohols
According to different production methods of calcium carbonate, it can be divided into heavy calcium carbonate, light calcium carbonate, colloidal calcium carbonate, and crystalline calcium carbonate. According to the average particle size (d) of calcium carbonate powder, it can be divided into particulate calcium carbonate (d>5 μ m) Micropowder calcium carbonate (1-5 μ m) Fine calcium carbonate (0.1-1 μ m) Ultrafine calcium carbonate (0.02-0.1 μ m) Ultra fine calcium carbonate (d ≤ 0.02 μ m) . According to the regularity of the arrangement of atoms and ions that make up calcium carbonate, it can be divided into crystalline calcium carbonate and amorphous calcium carbonate. In addition, there are nano calcium carbonate and others.
Heavy calcium carbonate
Heavy calcium carbonate (commonly known as heavy calcium carbonate) is produced by directly crushing natural calcite, limestone, chalk, shells, etc. using mechanical methods (such as Raymond mill or other high-pressure mills). 
Light calcium carbonate
Light calcium carbonate (commonly known as light calcium carbonate), also known as precipitated calcium carbonate, is obtained by calcining raw materials such as limestone to produce lime (mainly composed of calcium oxide) and carbon dioxide, then adding water to digest the lime to produce lime milk (mainly composed of calcium hydroxide), and then adding carbon dioxide to carbonize the lime milk to generate calcium carbonate precipitate. Finally, it is obtained through dehydration, drying, and crushing. Alternatively, sodium carbonate and calcium chloride can be used for double decomposition reaction to generate calcium carbonate precipitate, which is then dehydrated, dried, and crushed to obtain. 
activated calcium carbonate
Colloidal calcium carbonate, also known as activated calcium carbonate, modified calcium carbonate, surface treated calcium carbonate, colloidal calcium carbonate, or white brilliant, is prepared by surface modification of light or heavy calcium carbonate with surface modifiers. Due to the fact that calcium carbonate modified by surface modifiers generally has a reinforcing effect, known as "activity", it is customary to refer to modified calcium carbonate as active calcium carbonate.
Property: Colloidal calcium carbonate is an extremely fine white powder, odorless and tasteless, with particles resembling spheres and a particle size below 0.1um. Due to the adsorption of a layer of fat soap on the surface of the particles, it has colloidal activation performance and is an excellent white reinforcing filler. Soluble in water, decomposes when exposed to acid, turns into a burnt black color upon ignition, releases carbon dioxide, and generates calcium oxide. The specific gravity ranges from 1.99 to 2.01. 
Crystalline calcium carbonate
Calcium hydroxide reacts with hydrochloric acid to generate calcium chloride, which is decolorized and impurities removed by activated carbon. Calcium chloride is carbonated with carbon dioxide in the presence of ammonia to obtain calcium carbonate, which is then crystallized, separated, washed, dehydrated, dried, and screened.
Property: Pure white, hexagonal crystalline powder. Specific volume 1.2-1.4 milliliters per gram. Soluble in acids, almost insoluble in water. 
Usage: Used in toothpaste, medicine, and other fields, as well as as as insulation materials and the production of other chemical raw materials.
Calcium carbonate is a valuable resource with a wide range of uses. Limestone is a trade name used as a mineral raw material. Limestone has been widely used in the history of human civilization due to its wide distribution and easy accessibility in nature. As an important building material with a long history of mining, limestone is the main raw material for manufacturing cement, lime, and calcium carbide in modern industry. It is an indispensable flux limestone in the metallurgical industry. After ultrafine grinding, high-quality limestone is widely used in the manufacturing of products such as paper, rubber, paint, coatings, pharmaceuticals, cosmetics, feed, sealing, bonding, polishing, etc. According to incomplete statistics, the ratio of the total consumption of limestone and building stones, lime production, metallurgical flux, and ultrafine calcium carbonate in cement production is 1:3. Limestone is a non renewable resource. With the continuous progress of science and technology and the development of nanotechnology, the application fields of limestone will be further expanded. 
Guangxi Changhong Biological Material Co., Ltd. was established in January 2023 with 41 million USD registered capital. Guangxi Changhong has two marble mines, with more than 200 million tons reserves and 4 million tons/year raw ore supply capacity , plans to build 100 KT/year of high-end modified calcium carbonate production line, 600 KT/year shoe material masterbatch production line, 100 KT/year degradable products and agricultural mulch. After completion, the company will have four major products,such as calcium carbonate powder series, modified filler masterbatch series, bio eco-friendly degradable material series, large board, sheet and so on. Products are widely used in paper, plastic products, rubber, paint coatings, daily chemicals, wires and cables, paint chemicals, green building materials, ceramics, highway marking and other industries.
The construction of the project will help Keyuan group build upstream calcium carbonate masterbatch chain, realize the whole industry chain layout of the company from the BDO, PBAT products, PBAT, PBAT modified to biodegradable products, speed up the frequency of subsequent biodegradable plastic production line, continuously strengthen the upstream raw material advantages, and form the integration of upstream and downstream industry synergy.
Contact Person: Mrs. Kim Xie