Explain the difference between lightly fired magnesium oxide and activated magnesium oxide?

Lightly burnt magnesium oxide: scientific name magnesium oxide. Lightly burnt magnesium oxide

It has a density of 2.94 and is in the form of light yellow or white powder. Its melting point is 2852℃ and boiling point is up to 3600℃. It is soluble in acids and ammonium salts, but insoluble in water and ethanol. It is easily deliquesced in air. It is an air-hard cementing material.

Activated magnesium oxide, molecular formula MgO

Its relative molecular mass is 40.30. Its chemical composition, physical form and other indicators and ordinary magnesium oxide are not very different, but some of the indicators of active magnesium oxide and ordinary magnesium oxide requirements are different; such as to have a suitable particle size distribution, the average particle size: <2 µm (2000 nm); microscopic morphology for irregular particles or nearly spherical particles or flaky crystals; with citric acid (CAA value) expressed by the activity is 12~25s (the smaller the value, the higher the activity); the activity expressed by the iodine absorption value is 80~120 (mgI2/100gMgO); the specific surface is between 5~20m3/g, and the apparent specific volume is between 6~8.5mL/g. In addition, because of the high activity of this magnesium oxide, it tends to absorb water and sometimes requires chemical treatment for protection. In some aspects, it shows special properties that conventional materials do not have, so it is widely used as a new type of material.

Uses:

Activated magnesium oxide is an important raw material for the preparation of highly functional fine inorganic materials, electronic components, inks, and harmful gas adsorbents. It is expected to be developed as a cutting-edge material under high temperature, high corrosion and other harsh conditions. It can also be used as filler for paint, paper and cosmetics, filler and reinforcing agent for plastics and rubber, and auxiliary material for various electronic materials. Lightly burnt magnesium oxide is a kind of light burnt magnesium oxide obtained by calcining natural magnesite, magnesite and magnesium hydroxide Mg(OH)2 extracted from seawater or brine at a temperature of 700~1000°C. It is also used as filler and reinforcing agent for plastics and rubber as well as auxiliary material for various electronic materials.

Lightly burnt magnesium oxide

Lightly burnt magnesium oxide is used in chemical industry to produce magnesium sulfate, magnesium nitrate, magnesium hydroxide, etc., in the pharmaceutical industry for the preparation of antacid and light laxative, in the food processing industry is mainly used as a decolorizing agent, in the magnesium building materials industry, as magnesium glass materials in the main raw materials, mainly used in the production of magnesium glass materials, the light burnt magnesium oxide with magnesium chloride or magnesium sulfate aqueous solution in a certain ratio, can be gelled and hardened into a hardened body with certain physical and mechanical properties. Certain physical and mechanical properties of the hardened body, so it is called magnesium cement, magnesium cement as a new type of cement, has a lightweight and high strength, fire insulation, energy saving and environmental protection and other advantages, can be widely used in construction building materials, municipal engineering, agriculture, machinery and other fields, such as decorative panels, partition panels, sanitary ware, ceiling ceilings, flooring, floor tiles, ventilation pipes, sewage manhole covers, fire doors and windows, fire prevention boards, artificial stone, wood products Roofing materials, handicrafts and abrasive molds, stoves, fireworks curing agent and so on.

Magnesium oxide in our country is widely used in all walks of life, can be said to have made a significant contribution to the light burning magnesium powder magnesium oxide in our country is rich, the annual domestic production of about 12 million tons, such a huge number, amazing!

What kind of market what kind of demand, let magnesium oxide so widely used?

1, light magnesium oxide is mainly used as raw materials for the preparation of ceramics, enamel, refractory crucible and refractory bricks. Also used as abrasive adhesive url]paint] and paper filler, chloroprene rubber and fluoroelastomer accelerator and activator.

2, magnesium chloride and other solutions mixed, can be made into magnesium oxide water tone. Used in medicine as antacid and laxative for hyperacidity stomach and duodenal ulcer disease. Chemical industry as a catalyst and raw materials for the manufacture of magnesium salts. Also used in the manufacture of glass, dyeing meal, phenolic plastics and so on.