Zircon Sands

High-Quality Sands for Precision Investment Casting, Foundry, and Ceramic Applications

Zircon (zirconium silicate) sands are naturally occurring, rounded sands used in foundry, ceramic, refractory, and precision investment casting applications. They are critical components in the production of glazes, ladle brick, wall tiles, coatings, shell molds and cores, and metal chills.

The Chemours Company maintains a sustainable and continuous supply of high-quality zircon sands that are clean, pure, and uniform to ensure optimal performance.

Among a broad range of other benefits, Chemours zircon sands offer:

  • High thermal conductivity
  • Low thermal expansion
  • High bulk density
  • Low reactivity with most alloys
  • Nonwetting surface to molten metals
  • Excellent refractory properties

Zircon sands from Chemours are insoluble in water, dilute acids, and hot concentrated sulfuric acid. They have very slight solubility in hydrofluoric acid. Zircon sands react with hot concentrated alkali solutions, but do not react with cold dilute alkali solutions.

Chemours offers five grades of zircon sands that vary in the level of zircon and other heavy material content. They are:

  • Premium zircon
  • Low alumina zircon
  • Standard zircon
  • Zircon T
  • Zircon M

Chemours mines zircon sands from mineral sands deposits in the southeastern United States, then chemically scrubs the sands to produce clean products that are free of dirt and ultrafines that could damage substrates. They are then calcined to reduce water and other volatile content. The sands are separated from other minerals by physical processes to produce uniform high-quality products.

Zircon sand is available in:

  • 22.7-kg (50-lb) multiwall paper bags
  • Semi-bulk (2 ton or 4 ton) bags
  • Bulk hopper cars or trucks

View the Zircon Sands Product Information Sheet to learn more about our zircon sands solutions.