Name: Light Magnesium Carbonate
Molecular Formula: 3MgCO3@ Mg(OH) 2@ 3H2O
Molecular Weight: 365.31
Properties:
Magnesium carbonate is a white monoclinic crystalline or amorphous powder, odourless, tasteless, and stable in the air. Its composition is x MgCO3@ y Mg(OH) 2@ z H2O.
The ratio of x, y, z can be 4: 1: 4, 4: 1: 5, 4: 1: 6, 4: 1: 7, 3: 1: 3, 3: 1: 4. The relative density is 2.16. Magnesium carbonate is slightly soluble in water and solubility is 0.02%. Its aqueous solution is slightly alkaline. Magnesium carbonate is soluble in acid and ammonium salt solution. MgCO3 decomposes and releases carbon dioxide when reacting with dilute acid. MgCO3 decomposes and produces water, carbon dioxide and magnesium oxide.
Application:
Magnesium carbonate can be used as desiccant, colour agents, carriers, anti-caking agent, antacids in medicines, filler and reinforcing agents for rubber products, fireproofing insulation material with the characters like heat insulation, high temperature resistance. Asbestos light magnesium carbonate is an excellent insulation material for shipbuilding, boiler manufacturing and other fields. Magnesium carbonate can be used for manufacturing advanced glass products, magnesium salt, pigments, paints and chemicals.
Preparation method:
Magnesium carbonate can be produced with brine, limestone carbonation, soda or ammonium bicarbonate. Qianghong magnesium carbonate is produced by reacting of high purity magnesium hydroxide and ammonium bicarbonate. The quality is excellent.
Technical Index:
Item Index
Magnesium oxide(MgO)% 42-44.5%
Calcium oxide(CaO)% ≤ 0.04%
Sulfate% ≤ 0.04%
Residue (75Um test sieve)% ≤ 0.01
Iron(Fe)% ≤ 10ppm
Heavy metals% ≤ 10ppm
Chloride (Cl)% ≤ 0.04%
Loss on ignition% 55-58%
Bulk density(g/mL)% ≤ 0.15
Pb(Mg/g) ≤ 2ppm
Established in 2006, Gongyi Qianghong Magnesium Technology Co., Ltd. is a professional manufacturer committed to research, develop, manufacture and market magnesium products. The company is located in Gongyi City, Henan Province with very convenient transportation and rich mineral resources. Annual productions are 3, 000 tons high- purity magnesium hydroxide, 1, 000 tons high- purity magnesium oxide, 1, 500 tons magnesium carbonate. Gongyi Qianghong Magnesium Technology Co., Ltd. Occupies 30682 square meters, including standard factory building area of 9820 square meters and office and staff quarters of 4970 square meters. There are 120 staffs in Qianghong Magnesium, including 3 senior engineers and 9 technicians with college degree or above. The company registered capital is 20 million RMB. The total asset is 49.27 million RMB, including 18.53 million RMB in fixed asset.
