Caustic Calcined Magnesite Powder for Cement

Caustic calcined magnesite powder for cement will form a special kind of cement with magnesia as the main component, also known as magnesia cement. Here's an introduction to how caustic calcined magnesite powder is utilized in the cement industry:

Chemical Composition: Caustic calcined magnesite powder is primarily composed of magnesium oxide (MgO). It is produced by calcining magnesite ore at high temperatures, typically above 700°C, which causes the raw magnesite to undergo thermal decomposition and transform into magnesium oxide.

Reactivity and Binding Properties: In cement production, caustic calcined magnesite powder acts as a reactive material and a binding agent. When mixed with water, it undergoes a chemical reaction known as hydration, wherein magnesium oxide reacts with water to form magnesium hydroxide. This reaction contributes to the setting and hardening of cementitious materials.

Expansion Properties: Caustic calcined magnesite powder also exhibits expansive properties upon hydration, which can be advantageous in certain cement applications. The expansion helps to fill voids and improve the overall density and durability of the cement matrix.

Alkalinity: Magnesium oxide derived from caustic calcined magnesite powder contributes to the alkalinity of cementitious systems. Alkalinity is essential for controlling the pH level of concrete and providing protection against corrosion of embedded steel reinforcement.

Sulfate Resistance: CCM powder can enhance the sulfate resistance of cementitious materials. The formation of magnesium hydroxide and other secondary phases during hydration helps to mitigate the deleterious effects of sulfate attack, which can lead to deterioration of concrete structures in sulfate-rich environments.

1. Compared with ordinary cement, magnesium oxychloride cement does not harden in water and has the characteristics of air-hardening.

2. The wear resistance is three times that of ordinary Portland cement. From the perspective of characteristics, magnesium oxychloride cement is suitable for the production of floor tiles and other highly wear-resistant products, especially abrasives such as polished tiles.

3. High temperature and low temperature resistance

4. Low fever and low corrosiveness

5. High gloss of magnesium oxychloride cement products