Classification: light magnesium oxide (light burning powder) and heavy magnesium oxide (light burning powder). Light volume fluffy, white amorphous powder. Odorless, tasteless and nontoxic. The density is 3.58g/cm3. It is difficult to dissolve in pure water and organic solvent, and its solubility in water increases due to the presence of carbon dioxide. Soluble in acid and ammonium solution. It is transformed into crystal by high temperature burning. When encountering carbon dioxide in the air, magnesium carbonate double salt is formed. The weight is compact in volume, white or beige powder. It is easy to combine with water and absorb water and carbon dioxide in exposed air. It is easy to gel and harden when mixed with magnesium chloride solution.
Application: Determination of sulfur and pyrite in coal and sulfur and arsenic in steel. Standard for white pigments. Light magnesium oxide (light burnt powder) is mainly used as raw materials for preparing ceramics, enamels, refractory crucibles and refractory bricks. It is also used as the filler of polishing agent binder url] coating] and paper, promoter and activator of chloroprene rubber and fluororubber. After mixing with magnesium chloride and other solutions, magnesium oxide (light burned powder) can be prepared for water mixing. In medicine, it is used as an antacid and laxative, as an over acid stomach and peptic ulcer. In chemical industry, it is used as a catalyst and raw material for manufacturing magnesium salt. It is also used in the manufacture of glass, dye meal, phenolic plastics, etc. Heavy magnesium oxide (light burnt powder) is used in the rice milling industry for firing grinding and half drum. The construction industry is used to manufacture artificial chemical floor, artificial marble heat-proof board, sound insulation board, and plastic industry is used as filler. It can also be used to produce other magnesium salts.
It is mainly used to prepare internal medicine to neutralize excessive stomach acid. The commonly used preparations are: magnesium milk emulsion; magnesium cover tablets containing mgo0.1g per tablet; acid making powder magnesium oxide (light burning powder) and sodium bicarbonate mixed powder, etc.
Production process: light magnesium oxide is generally from magnesium chloride, magnesium sulfate, or magnesium bicarbonate, into water-soluble products through chemical process into water-insoluble products, and then calcined into magnesium oxide. The bulk density of the products produced is generally 0.2 (g / ml), while the heavy magnesium oxide is generally calcined directly from magnesite and brucite, and the bulk density is generally 0.5 (g / ml)
