Compared with general refractory materials, quartz crucibles have better thermal stability and aging resistance, so their performance and service life are more outstanding. They have advantages such as high purity, strong temperature resistance, large size and high precision, good insulation, energy saving, and stable quality. Therefore, it is widely used in the high-temperature production industry, including the metallurgical industry. Let's learn about the use of quartz crucibles in the metallurgical industry:
Quartz crucibles have good thermal stability and have been widely used in black and non-ferrous metallurgy. The use of immersion type nozzles for casting in steel casting operations is a key measure to solve the longitudinal cracking of continuous cast steel slabs. Due to the harsh conditions of immersion type nozzles compared to general nozzles, the head of the immersion type nozzle needs to be inserted into the molten steel and protective slag to keep the inside and outside of the nozzle in a high-temperature heating state, while the other part of the nozzle is exposed to the air.
The material requirements for immersion nozzles include good thermal stability, resistance to steel erosion, and resistance to slag erosion. Some commonly used refractory materials can no longer meet this requirement, while fused silica crucible is called one of the preferred materials for submerged nozzle by virtue of its unique characteristics.
The high thermal stability and non explosion characteristics of quartz crucibles in rapid cooling and heating working environments are well suited to the needs of the metallurgical industry. Everyone knows that quartz has a brittle texture and is easy to break, so it is important to pay more attention when using it.