Zircon sand - 50 lbs.
- Granular form
- Naturally occurring refractory mineral and is therefore subject to variability
- Chemically inert
- Stable to very high temperatures
- Very high thermal conductivity
- Acts as a chill to eliminate metal mold reactions and burn-in, resulting in a smooth cast surface
- High density provides excellent flow characteristics in a primary slurry
- Round grains do not cause defects such as rough casting surfaces
Zircon is a naturally occurring refractory mineral. It is chemically inert and is stable to very high temperatures. Zircon has a very high thermal conductivity and acts as a chill to eliminate metal mold reactions and burn-in resulting in a smooth cast surface. Zircon is available in both flour and granular form. Zircon is almost exclusively used in the primary slurry and as a primary stucco. Because of its high density, zircon provides excellent flow characteristics in a primary slurry. The round grains produce smooth casting surfaces, reducing rough casting defects.
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