Why is calcium oxide a stable compound with high temperature properties?

Why is calcium oxide a stable compound with high temperature properties?

As a stable compound with high temperature performance, calcium oxide is widely used. And this kind of product is also a pure refractory for purifying smelting. Now, let's talk about this product in detail.

1. Because the surface of calcium oxide particles forms a sintered skin during the sintering process, the particle shell is relatively dense, which improves the hydration resistance of calcium oxide particles. The prepared calcium oxide particles do not need to be broken, and can be used directly as refractory aggregate, avoiding the shortcomings of the traditional process to prepare calcium oxide sand need to be broken again.

2. The physical property of calcium oxide is the surface of white powder, and the impure one is gray, when it contain impurities is light yellow or gray, with hygroscopicity.

3. When the calcium oxide exposure in the air for a long time, it can not play the role of pond disinfection any more because it will absorb carbon dioxide into powdered calcium carbonate. Therefore, quick lime is bought and used now, and it is better to choose a lighter block and no impurities. If you can not use the remaining lime at one time, seal it with a plastic bag.

4. Calcium oxide can not be mixed with halogen drugs such as bleaching powder and strong ammonia essence. Because bleaching powder and other acidic drugs, lime is alkaline drugs, if mixed with acid and base neutralization, directly reduce the disinfection effect.

5. Lime with water will produce calcium hydroxide, and under weak alkaline conditions, trichlorfon will have a chemical reaction to generate dichlorvos, its toxicity will be enhanced by 10 times, and the residual period is greatly extended.