Zircon flour is manufactured by milling zircon sand, usually in ball mills, either in the dry state or in a slurry.It is used in a variety of applications, including ceramic frits, foundry mould coatings, ceramic shells for investment casting, refractories, friction products, insulating fibres and glass.

Depending on the application, there are various specifications for particle size, typically -200 mesh (-75 µm) and -325 mesh (-45 µm).