Light grade CAS No 2090-64-4 Magnesium carbonate Flooring & Fireproofing,Toothpaste industry

Shanghai liangjiang titanium white product Co., LTD is the name that is trusted by the clients for the manufacturing of Light Magnesium Carbonate in the most precise manner. Our Light Magnesium Carbonate is a Industrial Product, which is mainly used in preparing Antacid Preparations, Talcum/Face Powder, Rubber, Glass, etc. Based on its applicability in various industrial applications, we have claimed a topnotch position in the nationwide markets.

Description:
1,Liangjiang brand – light magnesium carbonate, also called basic magnesium carbonate. Appearance is white monoclinic crystal or amorphous powder. Non-toxic, tasteless, and stable in air. Density ratio is 2.16. slightly soluble in water, aqueous solution present alkalescence. Solubility in water is 0.02%(15℃). Easily soluble in acid and ammonium salt.
2,Liangjiang brand – light grade magnesium carbonate, mainly used as medical intermediate, antacid, color fixative, carrier, anticaking agent; food filler, magnesium compensator; also can be used as filler and fortifier for rubber products, heat resisting fireproofing material. It is widely used in many industries, electric wire, magnesium salt, pigments, paints, daily cosmetics, shipbuilding, boiler producing, sports etc.

Specifications:

Basic data

Typical technical index( Standard:HG/T2959-2010 )

Adopted plastic woven bags or paper and plastic compound bags, net weight is 20kg, or packaged as customer’s request in 500kgs or 1000kgs bags.

Store in a cool, dry, well-ventilated area away from incompatible substances
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid breathing dust.


Liangjiang brand magnesium carbonate manufacture process:


Manufacture process of MgCO3, is different based on different route of raw materials. The process is divided into 4 kinds, brine carbonization method, magnesite carbonate method, Asbestos tailings carbonization method, bicarbonate method.
fundamental of brine carbonization method
This method takes brine, seawater and other magnesium chloride solution, magnesium sulfate solution as materials, calcined with dolomite or limestone to produce CO2, dolomite lime or lime, and then digesting, carbonization, pyrolysis to get light grade magnesium carbonate.
Dolomite or limestone, after being calcined, watered, and reacted with brine, to get precipitated magnesium hydroxide. And then through carbonization, pyrolysis, washing, dehydration, dry, and smashing, then get finished magnesium carbonate products. The equations as follow:
Calcining dolomite MgCO3·CaCO3→MgO·CaO+2 CO2↑
Or calcining limestone: CaCO3→CaO+2 CO2↑
Digestion: MgO·CaO+2 H2O→Mg(OH)2+Ca(OH)2
Precipitate: MgCl2+Ca(OH)2→Mg(OH)2+CaCl2
Carbonization: Mg(OH)2+ 2 CO2→Mg(HCO3)2
Pyrolysis Mg(HCO3)2→4 MgCO3·Mg(OH)2·4H2O+6 CO2↑
Dolmitic lime in this method, can improve producing capacity of light magnesium carbonate, and reduce content of CaCL2, CaSO4 and other spinoff.
Producing magnesium carbonate through magnesite carbonization method
Put magnesite ( particle size 100-300mm ) and anthracite (calorific value 20000-25000 KJ/KG ) into calcining kiln in proportion (7-10):1. Control the temperature at 200-250 degree during pre-heating period, 700-800 degree during calcined period, 100-150 degree during refrigerstion period. Release the kiln gas out from kiln crown, CO2 concentration more than 28%. Get Light burned magnesia from kiln bottom. Smashed magnesia reacts with water to get Mg(OH)2, then carbonation reaction with CO2 to get magnesium bicarbonate. Then trough settling, separating, pyrolysis, filter to get light magnesium carbonate. The chemical equations as follow:
calcine MgCO3→MgO+CO2↑
digestion MgO+ H2O→Mg(OH)2
carbonization Mg(OH)2+2CO2→Mg(HCO3)2
pyrolysis 5Mg(HCO3)2→4MgCO3·Mg(OH)2·4 H2O+6 CO2↑

The process of getting magnesium compound in this method is same as dolomite carbonation. Because of lower Calcium content in magnesite, it needn’t set recycle system of CaCO3 which contains magnesium, and also lower calcium content in finished product magnesium carbonate, so quality is better, cost is lower, more competitive. It is a new technology, need to be paid more attention by factories.
Asbestos tailings carbonization method
Chemical component in asbestos tailings is similar to dolomite. Different proportion of calcium and magnesium in different tailings. In some tailings, MgO≦20%,CaO≦29% but SiO2≧20%, LOI≦30%. So should clear way solution in HCL when take this method to produce magnesium carbonate. Energy consumption of unit product is higher than dolomite carbonization method. The chemical equations as follow:
Calcining dolomite MgCO3·CaCO3→MgO·CaO+2 CO2↑
Digestion MgO·CaO+2 H2O→Mg(OH)2+Ca(OH)2
Carbonization Mg(OH)2+ Ca(OH)2+3 CO2→Mg(HCO3)2+ CaCO3↓+ H2O
pyrolysis Mg(HCO3)2→4 MgCO3·Mg(OH)2·4H2O+6 CO2↑

Applications:
According to different applications of magnesium carbonate, it can be divided into industry grade MgCO3, food grade MgCO3, medical grade MgCO3, transparent MgCO3, electrical grade MgCO3, bulk MgCO3 and aciculiform MgCO3 etc.
Applications :
Flooring & Fireproofing
Fire extinguishing compositions
Cosmetic industry
Dusting powder industry
Toothpaste industry
Filler material industry
Ceramic industry
Light magnesium carbonate is widely used in many fields. In pigments, paints and printing ink industries, MgCO3 can be used to produce high purity magnesium compound. MgCO3 also be used in fireproofing, extinguishant, floor and insulating material industries. In plastic and rubber industries, MgCO3 is used as filler and smoke inhibitor. In addition, in glass, ceramics and chemical medicine producing, MgCO3 also can be used in little. CPU grade MgCO3 can be used as salt additive, antacid in toothpaste and biscuits.

We aspire to be the world's leading manufacturer, supplier of raw chemical materials, to create the value of China manufacturing!

Shanghai Liangjiang Titanium white product Co., Ltd. was founded in 2000,as a large enterprises originally engaged in produce and process chemical raw materials,mainly the surface treatment of titanium dioxide (coated).After restructured to a diversified high-tech enterprise of produce and sale raw chemical material in 2006, we engaged in developing and produce powder materials. The company now consisting of five plants of Titanium Dioxide Factory, Barium Mines Factory, lithopone Factory,zinc products Factory, alumina Factory, "Liangjiang" as the brand, the main products are Titanium Dioxide , Barium Sulfate, Lithopone, Zinc Oxide, Alumina,Aluminum Hydroxide, Manganese Carbonate, Antimony Trioxide and others, totally more than 20 kinds. Professional technicanand manager with strong technical and scientific management of long period of accumulation and development let us achieved the advantage and market leadership of the industry.

Liangjiang Chemical implement international management system and follow the philosophy that customer is the most important so that we can service customers better. The company has passed ISO9001: 2000 international quality system certification, and to compliance with international environmental standards requirements, all products have reached the pollution requirements by the SGS heavy metal detection. Continuously improve product quality and increase brand construction strength and also consummate marketing channel, "Liangjiang" brand enjoy a high reputation both at home and abroad.

Liangjiang Chemical adhering to the "people-oriented, technological innovation "business philosophy, dedicated to develop and research fine chemical products.
Raw materials of titanium dioxide from domestic and abroad and then surface coating treatment of silicon, aluminum, zinc, zirconium and other organic and inorganic so that the quality will be more better. Also the products have powerful dispersion, long-term weather resistance and excellent gloss after activation, modification and coating treatment so that the index and application performance can be comparable with the import products. After a significant reduction in the cost of raw materials, our improvement of the quality and reduction of the costs with advanced technology and environmental-friendly craftwork completely changed the situation that domestic high-grade titanium dioxide depend on import products.

Liangjiang Chemical and embarked on rapid sustainable development and make unremitting efforts to create the make our products of first-class in domestic,internationally competitive and well-known company. Through constant technological innovation and increasing brand management so as to build a normative powder chemicals company with high quality, great ability. Now the marketing channel has covered all China's provinces, more than 60% of the products are exported to Europe, America, Southeast Asia and other regions, and established long-term stable cooperative relations with the world top 500 enterprises.

Business philosophy: first-class quality, first-class service.

Quality Management: we develop a complete quality control system of the whole process of the manufacturing, inspection, shipping, customer service. We create high-quality products by rigorous scientific management system and modern industrial equipment with advanced professional staff.

Sales Range: to respond to new demands of domestic and foreign customers, we
constantly strive to research and development of supplying first-class products. The mainland as the center, popular in Taiwan, Hong Kong, South Korea, Japan, Italy, Southeast Asia, North America and other countries and regions.

Research and development: to create high-quality products, we established specialized research institute with the latest technology equipment and excellent talent so that we lay a solid foundation for future long-term development and production.

Customer Service: we combined the production, marketing, research and development and other departments as an organic system to ensure that we can meet the needs of customers, to develop new products with customers, achieve our "first-class service".