The difference between kaolin and calcium carbonate
Then the carbonation of lime milk to produce calcium carbonate carbon dioxide precipitation, finally by dehydration, drying and crushing the system, or first with sodium carbonate and calcium chloride to precipitate calcium carbonate metathesis reaction, followed by dehydration, drying and crushing the system.
Small flake, tubular, laminated and kaolinite mineral kaolin is mainly composed of a cluster of less than 2 microns (kaolinite, dickite, nacrite, halloysite etc.), chemical formula and ideal for AL2O3-2SiO2-2H2O, the main mineral is kaolinite kaolinite and water, in addition to kaolinite cluster mineral, montmorillonite, and Ye Lashi, illite, quartz and feldspar and other associated minerals. The chemical composition of kaolin contains a large amount of AL2O3, SiO2 and a small amount of Fe2O3, TiO2, and trace amounts of K2O, Na2O, CaO and MgO.
Because the precipitated volume (2.4-2.8mL/g) of light calcium carbonate is larger than the settling volume (1.1-1.4mL/g) of heavy calcium carbonate, it is called light calcium carbonate.The main components of talc are as follows: SiO2, MgO, Fe2O3, CaO. In case of water, there should be Ca (OH) 2 production, there is no impact on calcium carbonate. So I think the precipitation is light calcium carbonate
Calcium carbonate precipitated calcium carbonate (also known as Precipitated Calcium Carbonate, referred to as PCC), is the period of burning limestone and other raw materials to produce lime (mainly calcium oxide) and carbon dioxide, and water digestion lime lime milk (the main component of calcium hydroxide)
