Is light burned magnesia the same as active

Light burned magnesia and active magnesia are different, they belong to two concepts.






Light burned magnesium oxide: scientific name: magnesium oxide.


Its density is 2.94 and it is light yellow or white powder. It has a melting point of 2852 ℃ and a boiling point of 3600 ℃. It is soluble in acids and ammonium salts, but not in water and ethanol. Deliquesce easily in the air. It belongs to the cementitious material of gas hardness.






Active magnesium oxide, molecular formula MgO.


Its molecular weight is 40.30. Its chemical composition, physical morphology and other indexes are not very different from those of ordinary magnesium oxide, but some indexes of active magnesium oxide are different from those of ordinary magnesium oxide; M (2000Nm); the micro morphology is irregular particles or near spherical particles or lamellar crystals; the activity is 12-25s (the smaller the value is, the higher the activity is); the activity is 80-120 (mgi2 / 100gmgo) with the iodine absorption value; the specific surface is 5-20m3 / g, the apparent specific volume is 6-8.5ml/g. In addition, due to the high activity of this kind of magnesium oxide, it is easy to absorb water and sometimes needs to be protected by chemical treatment.






In some aspects, it shows special properties that conventional materials do not have, so it is widely used as a new material.






Purpose:


Active magnesium oxide is an important raw material for the preparation of high-function 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 of paint, paper and cosmetics, filler and reinforcing agent of plastic and rubber, auxiliary materials of various electronic materials, etc.






Light burned magnesia is a kind of light burned magnesia obtained from natural magnesite, brucite and magnesium hydroxide Mg (OH) 2 extracted from seawater or brine and calcined at 700 ~ 1000 ℃.