Cristobalite

Cristobalite

Cristobalite is a high-temperature modification of quartz and, in contrast to quartz, its occurrence in nature is very seldom. For this reason, cristobalite is synthetically produced for industrial purposes from pure quartz in a rotary kiln at a temperature of approx. 1,500°C. A fractured grain surface, a high degree of whiteness and a density reduction to 2.35 g/cm3 is achieved by the calcination. Like quartz, cristobalite is chemically inert and is therefore popular as a filler in a variety of processes and products.

Cristobalite is a versatile material that can be used in various end-use industries including architecture, paints & coatings, metal casting, industrial, ceramic, and fiberglass industries.

Main applications:

-emulsion-bound exterior  paints and renders
-dental impression composites
-engineered stone made from PMMA, UP
-silicone sealant compounds
-anti-blocking additive in PP and PE film
-road markings

aka cristobalite
aka Cristobalite-CB-D52S- Powder1

Cristobalite: A crystal form of silica with the chemical formula SiO2,which is formed from pure molten silica at 3101°F (1750°C). It’s used in high-temperature furnace bricks and by the ceramic industry on rare occasions to strengthen glazed ware.

From whiteness to durability, AKA Co. cristobalite sands and powders bring a wide range of benefits as a specialist additive in engineered stone, coating and ceramic glaze  applications.

Cristobalite can be characterised by:

  • high brightness
  • relatively high Mohs hardness of 6.5
  • relatively low refractive index
  • easy wetting
  • high inertness in various media
  • transparency for UV-radiation 

Cristobalite is often used for manufacturing abrasives. And abrasives are primarily used in the foundry and metallurgy industry because their grains can penetrate even the hardest metals and alloys. Applications for abrasives in the foundry and metallurgy industry generally fall in the following categories: cleaning of surfaces and the coarse removal of excess material, shaping (as in form grinding and tool sharpening), sizing (primarily in precision grinding), and separating (as in cut-off or slicing operations).

aka ferro casting