Fire resistance and service life of zircon powder and zircon sand

I. Fire resistance

Zircon powder: The refractoriness of zircon powder is very high, and its melting point can reach 2500℃. This high fire resistance makes it stable in high temperature environment without melting or deformation, and is suitable for occasions requiring extremely high fire resistance.

Zircon sand: Zircon sand also has a high fire resistance, with a melting point of 2550℃. Its high melting point and good chemical stability make it outstanding in high temperature applications.

II. Service life

Zircon powder: In investment casting, zircon powder is used to make mold coating and ceramic core, which has a long service life and can withstand many high-temperature casting processes. Because of its high purity and low impurity content, zircon powder is not prone to chemical reaction at high temperature, thus prolonging its service life.

In the ceramic industry, zircon powder, as the main material or glaze additive, can significantly improve the wear resistance and surface smoothness of ceramics and has a long service life.

Zirconium sand: Zirconium sand has a long service life in refractories, for example, in zircon bricks in glass kilns, its average service life can reach more than 12 months. This is mainly due to its high fire resistance and good corrosion resistance.

In precision casting, zircon sand, as molding sand, can withstand high temperature and complex casting process and has a long service life.

III. Performance parameters

Zircon powder: Particle size: The common particle size range is 325 mesh, which is suitable for fine casting and ceramic glaze.

Chemical composition: The main components are ZrO and SiO₂, in which ZrO+HFO is ≥ 65% and the impurity content is low, such as FeO ≤ 0.15%.

Zircon sand: particle size: the common particle size range is 80-120 mesh, which is suitable for molding sand and refractories.

Chemical composition: The main components are ZrO and SiO₂, in which ZrO ≥ 65% and impurity content is low, such as FeO ≤ 0.1%.

IV. Summary

Both zircon powder and zircon sand have extremely high refractoriness and long service life, which are suitable for high temperature and complex process applications. Zircon powder is more suitable for fine casting and ceramic glaze, while zircon sand is excellent in refractories and molding sand.