Classification and application of magnesium oxideate

Magnesia can be divided into: heavy burnt magnesia, light burnt magnesia, industrial magnesia (light magnesia), heavy magnesia, active magnesia, high-purity magnesia, electrofused magnesia, magnesia whisker, magnesium peroxide, nanometer magnesia, magnesium hydroxide. The chemical formula is MgO, the relative molecular weight is 40.30, the melting point is 2800 degrees, odorless, tasteless, non-toxic white amorphous powder, insoluble in water, insoluble in alcohol, soluble in acid or ammonium salt solution, solubility in water increases with the increase of carbon dioxide content in the water. Magnesium oxide is afraid of water in the process of storage and transportation, afraid of moisture, easy to degenerate when meeting water.

Heavy fired magnesia: mainly used as refractory for lining of steelmaking furnace, also used as insulating filling material for making calcium magnesia brick, magnesium carbon brick, magnesium aluminum brick and electric heating element.

Light burnt magnesium: used as raw material for producing magnesium sulfate, magnesium hydroxide and magnesium chloride in chemical industry. The building materials industry is used to produce magnesium movable houses, magnesium fertilizer production raw materials, waste acid water and agents, adsorbents for heavy metal ions, etc.

Industrial magnesium oxide: also called light magnesium oxide, it plays an important role in many inorganic salt products. Mainly used for manufacturing ceramics, enamel, refractory materials, etc. Used as filling material in the manufacture of polishing agent, adhesive and paint; Accelerators and catalysts in synthetic fibres and rubber (neoprene, fluororubber); It is used as antacid and laxative in medicine for the treatment of gastric acid overload, gastric and duodenal ulcer disease. It can be used as decolorant for sugar refining and PH regulator for ice cream powder in food processing. In the construction industry, magnesium oxide can produce special cement and insulation board containing magnesium.

Heavy magnesium oxide: mainly used in magnetic materials industry, such as steel ball polishing, phenolic resin raw materials, dyes, etc.

Active magnesium oxide: different from normal magnesium oxide requirements, such as suitable particle size distribution, microscopic morphology of irregular particles or near-spherical particles or flake crystals. Because of its high activity and high dispersibility, it can even be made into fibrous magnesium oxide, which can be easily compounded with polymers or other materials. Because of its high dispersibility, this ultramicron magnesium oxide can also be used as a filler in paints, paper and cosmetics, as a filler and reinforcement for plastics and rubber, and as an auxiliary material for various electronic materials.

High purity magnesia: sintered magnesia with a content of more than 99% and a volume density of more than 3.4g%cm3. High purity magnesia has good high temperature flexural strength, slag resistance and corrosion resistance, which can improve the service life of furnace lining, so it is widely used in furnace lining refractories.

Fused (fused magnesia, fused magnesium oxide is one of magnesium compounds of main products in China, according to its purity of obtained products, crystal, form and purpose can be roughly divided into the following products: magnesium oxide, magnesium oxide single crystal polycrystal, high purity fused magnesia, electric appliances electricity melt magnesium oxide and electricity melt magnesium oxide refractory industry, ceramic industry, electricity melt magnesium oxide, etc.