Heavy magnesium oxide
The bulk density of heavy magnesium oxide obtained from light burned magnesium oxide after deep processing and separation of impurities is 0.5-0.7g/ml. Heavy magnesium oxide can replace light magnesium oxide in magnetic materials for color TV deflection coil (ferrite soft magnetic) and other ferrite magnetic materials; Serve as polishing agent in steel ball polishing industry; Dye industry as an auxiliary material for the production of aminophenol; The electrical industry is used as the raw material of phenolic resin. Secondly, it is also applied in ceramic glass, industrial catalyst, feed and environmental protection industries.
Active magnesium oxide
Active magnesium oxide is one of the varieties of many magnesium oxide products. Activity refers to the difficulty of magnesium oxide reaction, which is determined by the fineness of magnesium oxide solid particles (specific surface area).
Some indicators of active magnesium oxide are different from those of ordinary magnesium oxide. If there is a suitable particle size distribution, the average particle size is less than 2 μ m (2000nm) ; The micromorphology is irregular particles or near-spherical particles or lamellar crystals, and the activity indicated by citric acid (CAA value) is 12 25s (the smaller the value, the higher the activity); The activity expressed by iodine absorption value is 80~120 (mgI2/100gMgO); The specific surface is between 5~20m2/g, and the apparent specific volume is between 6 ^ 8.5ml/g.
It can be said that heavy magnesium oxide is pure Mg0, and light magnesium oxide is xMg0 * YMg (0H) 2, namely basic magnesium oxide. The percentage content of light magnesium oxide plays an important role in the activity. Generally, highly active magnesium oxide is prepared by decomposition of basic magnesium carbonate at low temperature for a long time. The furnace has a special structure, high energy consumption and large apparent specific volume.
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