- Time:Aug 24, 2023
Refractory cement is a special cement material with excellent resistance to high temperature and chemical attack. It is usually used for bonding, sealing and repairing refractory materials in high temperature environment, such as refractory bricks, refractory castables, etc.
The following is a detailed introduction of refractory cement:
1. Basic components: The main components of refractory cement are refractory cementitious materials, the most common of which are mineral alumina (Al2O3), silicate substances and a small amount of other additives. These components give refractory cement its high temperature and chemical resistance properties.
2. High temperature resistance: Refractory cement can maintain its structural stability and strength at extremely high temperatures. Different types of refractory cement have different refractory temperature ranges, which can meet various application requirements from medium and low temperature (1000°C) to ultra-high temperature (above 1800°C).
3. Chemical corrosion resistance: Refractory cement has good resistance to acids, alkalis and other chemicals. This makes it play an important role in occasions that need to resist chemical attack, such as metallurgy, chemical industry, glass manufacturing and other industries.
4. Sealing and repairing performance: Refractory cement has good cohesiveness and filling properties, and can be used to seal cracks, holes and joints in furnaces or equipment. It can also be used to repair and restore damaged refractory surfaces, extending their useful life.
5. Refractory cement Classification: According to its composition and characteristics, refractory cement can be further divided into different types, including Portland-based refractory cement, alumina-based refractory cement, and abrasive refractory cement, etc. Each type of cement is suitable for a different application and temperature range.
6. Refractory cement APPLICATION METHODS: Refractory cement is usually supplied as a dry powder and is stirred into a paste-like mass by adding water, which is then applied to the desired location with a scraper, trowel or sprayer. During construction, attention should be paid to controlling the contact time between cement and air to avoid premature hardening.
Refractory cement plays a key role in many industries for sealing, protecting and repairing high temperature furnaces, kilns, heat treatment equipment, chemical reactors and other high temperature environments. It provides durability, safety and reliability to these devices.
