The powder for making refractory slurry can be selected from fully sintered clinker and other refractory raw materials with stable volume. The particle size of powder materials depends on the use requirements. The particle size of Rongsheng refractory materials is generally less than 1mm, and some are less than 0.5mm or thinner. Reasonable particle composition has a great influence on ensuring the construction performance of mud, as well as binders and admixtures. The binder used in ordinary refractory mud is a binder. But at the same time, chemical adhesives are becoming more widely used. Adding various admixtures to refractory mud can improve the construction performance of refractory mud, such as adding water-retaining agents to extend the water loss time and ensuring construction quality; adding plasticizers to increase the plasticity of the mud, and adding dispersants to improve the fluidity of the mud.
Refractory mud can be divided into hydraulic, thermosetting and air-hardening refractory mud according to the setting and hardening characteristics of its binder. Hydraulic refractory slurry uses cement as a binder and can be used in places with normal temperature or frequent contact with water or water vapor. Thermosetting refractory slurry is usually made of thermosetting binders such as phosphate or phosphate. After the mud is hardened, in addition to high strength at various temperatures, it also has small shrinkage, tight joints, and strong corrosion resistance. Air-hardening refractory slurry is usually made of air-hardening binders such as sodium silicate to make masonry joints tight.
According to the different materials of refractory powder, commonly used refractory mud can be divided into clay, silicon, high alumina, magnesium, thermal insulation, etc. Refractory mortar is mainly used as a contact and surface coating for refractory brick masonry. When used as joint material, its quality has a great impact on the service life of the masonry. It can adjust the size errors and irregular shapes of bricks.
Make the masonry neat and the load balanced. It can also make the masonry form a strong and tight whole to resist damage from external forces and prevent the masonry and molten liquid from being soaked.
