Basic characteristics
Easy to flow under vibration, powder can fill pores to obtain dense body; heating relies on thermosetting binder or ceramic sintering agent to generate strength, forming a strong working surface during use, and the non-working surface is not sintered, which is conducive to stress reduction, crack resistance, and metal melt intrusion prevention, and is also convenient for unpacking and cleaning.
Main applications
- Continuous casting tundish: as working lining, it is simple to construct, short period, no need for maintenance and baking, and can be quickly heated and sintered for use. Good corrosion resistance can increase the life of the lining, meet the needs of long-term steel casting, purify molten steel (some binders can reduce pollution, but resin bonding is easy to increase carbon). Compared with coatings, it overcomes the shortcomings of manual application, improves life, and tends to replace coatings. It is also easy to turn over and disassemble, which is conducive to the turnover of the tundish.
- Aluminum electrolytic cell: It is used to prevent penetration in the cell, prevent penetration of Na, NaF, etc., and protect the thermal insulation layer. The material is selected according to the electrolytic cell design. It is required that m (Al₂O₃)/m (SiO₂) is greater than 0.9 to inhibit penetration. The construction thickness is 100-150mm.
