Mullite-Forming Kyanite Concentrate from Mexico
Beneficiated kyanite concentrate selected for optimal mullite formation during firing, 99%+ purity. Falls under HTS 2508.50.00.00 as processed but uncalcined kyanite per Chapter 25 definitions.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Magnetic separation records prove beneficiation without chemical change
• Specify 'not fused' to avoid 2529 fused mullite confusion
• Thermal analysis curves (DTA/TGA) support classification claims