Petroleum & Products
Description
CAS No. 546-93-0 Light magnesium carbonate Used in Ceramic 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.
?
Used in Preparation Of :
# Antacid preparations
# Talcum/face powder
# Rubber
# Glass
# Gutka
# Inks
# Readymade foods products # Vada mix
# Idli mix
# Onion
# Garlic powder
# Free flow salts
# Fry pumps
# Asanti-caking agent
# Fragrance retainer
?
Properties :
# Very Light
# White in appearance
# Mesh powder in form
?
Applications :
# Flooring & Fireproofing
# Fire extinguishing compositions
# Cosmetic industry
# Dusting powder industry
# Toothpaste industry
# Filler material industry
# Ceramic industry
?
Specifications:
Basic data
?
- - - -
Chemical name | Light?magnesium?carbonate |
CAS NO. | 13717-00-5 |
EINECS NO. | 231-817-2 |
Formula | MgO3 |
Appearance | white powder |
apparent density | 2.16 g/cm3 |
Manufacturer | Shanghai Liangjiang titanium white product co.,LTD |
- - - -
Typical technical index( Standard:HG/T2959-2010 )
- - - -
NO. | ITEM | UNIT | INDEX |
Grade A | Grade B | Grade C |
1 | MgO content | % | ≥41 | ≥40 | ≥38 |
2 | Moisture | % | ≤2.0 | ≤3.0 | ≤4.0 |
3 | CaO content | % | ≤0.43 | ≤0.7 | ≤1.0 |
4 | Iron | g/100g | ≤0.02 | ≤0.05 | ≤0.08 |
5 | Chloride content | ? | ≤0.1 | ≤0.15 | ≤0.30 |
6 | Sulfate content | % | ≤0.1 | ≤0.15 | ≤0.30 |
7 | Mn content | % | ≤0.004 | ≤0.004 | - |
8 | g/ml Bulk density | % | ≤0.12 | ≤0.14 | - |
9 | Residue on sieve(150mesh) | % | ≤0.025 | ≤0.03 | ≤0.05 |
- - - -
?
?
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.
?
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.
?
3,?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.
?
1. 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.
?
2,?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.
?
3,?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.
?
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.
?
Medical grade magnesium carbonate can be used as antiacid. Antiacid is used for hyperacidity and duodenal ulcer in clinic. Because of small volume, it is suit for compounding powder.
In food industries, it is used for flour ameliorant, and content reaches 10%-15%, for improve dispersibility and mobility. In addition, it also can used in producing magnesium salt, magnesium oxide, fireproofing material, rubber, ceramics, glass, cosmetic, toothpaste, and pigments etc.
?
Food grade magnesium carbonate mainly used for flour ameliorant. In formula of flour ameliorant, magnesium carbonate is very important auxiliary parts. It’s mainly is to improve dispersibility and mobility. MgCO3 content in flour ameliorant is about 10%-15%. In order to get better mobility, MgO content should be about 40% - 43%, moisture should be less than 1%, specific volume should around 1.4-2.5 ml/g. In addition, it is also used in food, cosmetic and medical industries.
?
Electronic grade magnesium carbonate is used as materials for electronic components. Besides, it is also main material for producing high purity MgO, printing ink, fine ceramics, medicine, cosmetics, toothpaster, advanced pigments etc. It has the highest additional value when used in electronic materials.
?
Transparent light magnesium carbonate mainly used as filler and fortifier in transparent or light-colored rubber products. It almost no change for rubber’s refractive index, but can enhance abrasive resistance, resistance curve and strength of extension. It also can be used as filler in paint, ink and coatings, toothpaste, medicine and cosmetics.
?
Aciculiform magnesium carbonate, mainly used as filler and fortifier in rubber. Easily to combine with rubber because of its aciculiform crystal. It has similar refractive index with rubber if well controlled its ratio of particle size and length. It can enhance abrasive resistance, resistance curve and strength of extension. It also can be used as filler in paint, ink and coatings, toothpaste, medicine and cosmetics.
?
Bulk magnesium carbonate is same with light grade magnesium carbonate, the difference is only form. It only can be used for athlete to keep hand dry.
?
we aspires to be the supplier of? the world& acute;s leading chemical raw materials, show our value of the products made in China!
Read More
Shanghai Liangjiang Titanium White Product Co., Ltd.
Chloride Process Titanium Dioxide,Rutile Titanium Dioxide,Anatase Titanium Dioxide
Address: Room 302, Building No.8,
Shanghai, Shanghai
China, 200000
Tel: 86-21-69985235
Fax: 86-21-39565974
