Caustic Calcined Magnesite - Chinaprice: contact company for price
naturally as periclase and is a source of magnesium (see also oxide). It
has an empirical formula of MgO. It is formed by an ionic bond between
one magnesium and one oxygen atom. Magnesium oxide is hygroscopic in
nature and care must be taken to protect it from moisture. Magnesium
hydroxide forms in the presence of water (MgO + H2O -Mg(OH)2), but it
can be reversed by heating it to separate moisture.
Magnesium oxide was historically known as magnesia alba (literally, the white mineral from Magnesia), to differentiate it from magnesia negra, a black mineral containing what is now known as manganese.
A refractory material is one that is physically and chemically stable at high temperatures. 'By far the largest consumer of magnesia worldwide is the refractory industry, which consumed about 56% of the magnesia in the United States in 2004, the remaining 44% being used in agricultural, chemical, construction, environmental, and other industrial applications.
MgO is one of the raw materials for making Portland cement in dry process plants. If too much MgO is added, the cement may become expansive. Production of MgO-based cement using serpentinite and waste CO2 (as opposed to conventional CaO-based cement using fossil fuels) may reduce anthropogenic emissions of CO2.
MgO is an efficient moisture absorbent used by many libraries for preserving books.
In medicine, magnesium oxide is used for relief of heartburn and sore stomach, as an antacid, magnesium supplement, and as a short-term laxative. It is also used to improve symptoms of indigestion. Side effects of magnesium oxide may include nausea and cramping. In quantities sufficient to obtain a laxative effect, side effects of long-term use include enteroliths resulting in bowel obstruction.
MgO is used as an insulator in industrial cables, as a basic refractory material for crucibles and as a principal fireproofing ingredient in construction materials. As a construction material, magnesium oxide wallboards have several attractive characteristics: fire resistance, moisture resistance, mold and mildew resistance, and strength.
It is used as a reference white color in colorimetry, owing to its good diffusing and reflectivity properties. It may be smoked onto the surface of an opaque material to form an integrating sphere.
It is used extensively in electrical heating as a component of 'CalRod'-styled heating elements. There are several mesh sizes available and most commonly used ones are 40 and 80 mesh per the American Foundry Society. The extensive use is due to its high dielectric strength and average thermal conductivity. MgO is usually crushed and compacted with minimal airgaps or voids. The electrical heating industry also experimented with aluminium oxide, but it is not used anymore.
Pressed MgO is used as an optical material. It is transparent from 0.3 to 7 μm. The refractive index is 1.72 at 1 μm and the Abbe number is 53.58. It is sometimes known by the Eastman Kodak trademarked name Irtran-5, although this designation is long since obsolete. Crystalline pure MgO is available commercially and has small use in infrared optics.
It is packed around transuranic waste at the Waste Isolation Pilot Plant, to control the solubility of radionuclides.
An aerosolized solution of MgO is used in library science and collections management for the deacidification of at-risk paper items. In this process, the alkalinity of MgO (and similar compounds) neutralizes the relatively high acidity characteristic of low-quality paper, thus slowing the rate of deterioration.
It is also used as a protective coating in plasma displays.
Magnesium oxide is easily made by burning magnesium ribbon which oxidizes in a bright white light, resulting in a powder. However, the bright flame is very hard to extinguish and it emits a harmful intensity of UV light. Inhalation of magnesium oxide fumes can cause metal fume fever.
Caustic Calcined Magnesite
Thank you in advance for your consideration
- Posted By: Yinghui International Trade Co.Ltd
- Phone: 13478458526
- Address: 3009.Times SquareB,50 Renmin Road, Dalian, China
- Website: http://www.mgo.my
Published date: September 7, 2012 -
- Business Description: involved in international trade import export of goods, products, and services
Supply Best Steel PipesMinerals - Cangzhou Qianxin Steelpipe Co.Ltd - China - September 7, 2012 - contact company for price
Cangzhou Qianxin Steel Pipe Limited Company was founded in 1998.Locating in Cangzhou city, which is famous for its pipe fittings; it lies east to Huanghua, north to two ports of Tianjin. And it is the must passing through department of 205, 104 and 3...
Dead Burned MagnesiteMinerals - Yinghui International Trade Co.Ltd - China - September 7, 2012 - contact company for price
MGO% SiO2% Fe2O3% Al2O3% CaO% LOI% BD g/cm3 >93 <3.0 <1.2 <0.8 <2.0 <0.5 >3.18 >92 <3.5 <1.4 <1.0 <2.3 <0.5 >3.15 >91 <3.8 <1.5 <1.2 <2.4 <0.5 >3.15 >90 <4.0 <1.6 <1.4 <2.5...
Flake Graphite Foil Lubricants CarbonMinerals - Zaozhuang Wealson Enterprises Co.,Ltd. - China - September 7, 2012 - contact company for price
Wealson offers a full line of graphite flake and graphite powder products. The purity of our flake graphite and powder ranges from 80% to 99.99% of carbon. Our high quality flake graphite and powder can be used as an engineering material over a wide ...
Safe Trade Tips
- Ask for business references and check them
- Use a payment method that offers better protection for all such as Letters of credit and verified professional escrow services. Avoid payments in advance such as money transfers
- Verify their business via their local Chamber of Commerce
- Search the internet using their website address, their business name, their phone and fax numbers, and their email addresses to see if you can find any feedback about them.
- Get to know more about scams to avoid: Internet Crime Complaint Center - International Financial Scams
- This site is never involved in any transaction, and does not handle payments, shipping, guarantee transactions, provide escrow services, or offer "buyer protection" or "seller certification"