Calcined Zirconia from Zircon from Japan
Thermal plasma dissociated ZrO2 from zircon feedstock. Chemically defined zirconium dioxide qualifies for HTS 2825.60.00 post-calcination.
Duty Rate — Japan → United States
3.7%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• XRF confirming >99% ZrO2 post-plasma treatment differentiates from zircon
• Calcination temperature records (2200°C+) prove complete ZrSiO4 dissociation
• Free silica content <0.1% analysis prevents mineral classification