- Time:Jun 17, 2023
Refractory castable is a special refractory material used in high temperature environment, and its solidification time refers to the time required to reach the final hardened state after pouring. This time can affect the performance and construction efficiency of the castable.
一. The solidification time of refractory castables
Generally, the solidification time of refractory castables in conventional ladles, cast iron nozzles and other applications is usually 24-48 hours. However, in special demand scenarios, such as high temperature or equipment with high sealing requirements, longer solidification time may be required.
二. Factors affecting the solidification time of refractory castables
The solidification time of refractory castables is affected by many factors, mainly including the following aspects:
1. Composition and ratio of materials: The corresponding solidification time of refractory castables with different compositions and ratios is also different.
2. Ambient temperature and humidity: In a lower temperature or humid environment, the solidification time of refractory castables is usually longer. In a higher temperature environment, the setting time will be shortened accordingly.
3. Stirring method and time: Proper stirring can promote the cement reaction in the refractory castable, thereby accelerating the setting time. However, too long or too short stirring time will affect the hardening quality and setting time.
4. Construction conditions: such as construction methods, surface treatment, etc. will also affect the setting time of refractory castables.
5. Castable density: the higher the density, the longer the solidification time of the castable.
Generally speaking, under normal circumstances, the solidification time of refractory castables in applications such as conventional ladles and cast iron nozzles is usually 24-72 hours. However, in special demand scenarios, such as high temperature or equipment with high sealing requirements, longer solidification time may be required.
In order to ensure the hardening effect and performance of the refractory castable, it is generally recommended to carry out construction in accordance with the guidance provided by the material supplier or designer, and strictly control various parameters during the construction process to ensure that the refractory castable can reach the expected performance within the specified time. hardened state.
