1. The apparent porosity of castable refractory material
In refractory materials, there are three different kinds of pores. Open pores are defined as closed pores that are open at the other end and communicate with the outside world. Closed pores are defined as pores that are closed inside the body and do not communicate with the outside world. the material has pores that allow fluid to travel through them on both sides. The amount and effectiveness of dispersants and binders, the mixing procedure, the addition of water, the duration of vibration, and many other parameters all have an impact on the porosity of refractory castables. But the impact of elements like particle size distribution, vibration duration, and combination。
2. Refractory castable materials' normal temperature strength
Room temperature compressive strength and room temperature flexural strength are the two main categories of refractory castables' room temperature strength. The kind and quantity of the binder is one of the most significant elements affecting the normal temperature strength of castables, among other characteristics such as grain size, particle size and gradation, and type and amount of binder. Now, there is a focus on low-cement, ultra-low-cement, and cement-free castables. These refractories castables can be used for high temperature components and use micropowder as a binder to replace or completely replace calcium aluminate cement.
3. Castable refractory materials with high thermal strength
Refractory castables need to be strong not only at room temperature, but also at high temperatures in order to function properly. high-temperature flexural strength and actual performance are closely connected. It is one of the crucial metrics for assessing how well its perform. Its size is influenced by the material's firing temperature, the makeup of the raw materials, the manufacturing method, the chemical composition, the amount of impurities, and the structure. influenced by things like structure.
4. Thermal shock resistance of refractory castables
The thermal shock resistance is its ability to resist large temperature changes without damage. There are many factors that affect the thermal shock performance of refractories castable material, such as the chemical composition of the castable itself, bond strength, external temperature, crystal transformation, crystal structure, and tightness of the internal structure; at the same time, the bonding system and matrix of the refractory castable Composition is also an important influencing factor.
5. Slag resistance of refractory injection material
The erosion effect of slag on the sample is mainly the dissolution of the refractory castables surface and the penetration into the interior of the castable, and the penetration of the slag on the sample will expand the reaction depth and area, causing the composition and structure near the surface of the sample to deteriorate. A metamorphic layer with high solubility is formed, thereby accelerating the destruction of the sample. Therefore, in the case of the same material , the microstructure of the matrix in the material becomes the key factor determining the slag resistance of the material.
