Industry Knowledge of Zirconia Refractory Brick

Zirconia refractory brick is a high-quality refractory material that is widely used in various high-temperature industrial furnaces. It is made of zirconia and other raw materials through a certain production process, which has excellent high-temperature resistance, corrosion resistance, and wear resistance.

In terms of classification, zirconia refractory brick can be divided into different grades according to its zirconia content, such as 5ZrO2·SiO2, 10ZrO2·SiO2, and 30ZrO2·SiO2. The higher the content of zirconia, the better the performance of the refractory brick will be. In addition, zirconia refractory brick can also be divided into different forms, such as zirconia refractory brick with holes, zirconia refractory brick without holes, and composite zirconia refractory brick.

The main technical parameters of zirconia refractory brick include bulk density, compressive strength, thermal shock resistance, and high-temperature creep. Generally speaking, the bulk density of zirconia refractory brick is around 3.5 g/cm³, and the compressive strength is above 100 MPa. The thermal shock resistance and high-temperature creep of zirconia refractory brick are also excellent, which can meet the needs of various high-temperature industrial furnaces.

In terms of production process, zirconia refractory brick is mainly made by sintering, slurry casting, and hot pressing. Among them, sintering is the most common method, which requires a high temperature of about 1600℃ and a long sintering time. Slurry casting and hot pressing are relatively new production processes, which can not only improve the quality and performance of zirconia refractory brick but also reduce the production cost.

In conclusion, zirconia refractory brick is a high-quality refractory material with excellent performance. With the development of high-temperature industry, the demand for zirconia refractory brick is increasing. In the future, the production technology of zirconia refractory brick will continue to improve, and its application field will also be wider and wider.