What is the thermal shock resistance of refractory castables
178 | 2019-09-17 09:06:53 | 分享： Browse: 178 | 2019-09-17 09:06:53 | Share:
Refractory castable refers to a mixture composed of refractory aggregate, binder and admixture. It has many properties. A common and key property is its thermal shock resistance. Let's introduce the castable. Thermal shock resistance:
First, the thermal shock resistance of refractory castables: very refractory, it can also be called rapid cooling and rapid heat resistance, temperature change resistance and thermal stability.
Second, in the process of using the temperature increase or decrease is inevitable, it will cause expansion and contraction, that is, thermal stress.
Third, when its thermal stress exceeds its structural strength, cracking or flaking will occur, and even the liner will collapse.
Fourth, it can ensure the overall structure of the circulating fluidized bed boiler lining, which is very suitable for use in relatively harsh environments such as ignition ducts and water-cooled air chambers with large temperature fluctuations in CFB boilers.
The refractory castable has a certain setting and hardening time after construction. This is the difference between it and other amorphous refractories. Its thermal shock resistance is very good, and this performance can also judge the quality of the castable, which is an important index. In addition, it also has a lot of performance, everyone should know well before using it.