Zinc Silicate Ore Concentrate Borderline from Mexico
Low-grade zinc silicate ore fines suitable for heap leaching rather than flotation. Borderline classification under HTS 2608.00.00 as crude ore when not fully concentrated. Used in solvent extraction-electrowinning zinc circuits.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Document processing history to prove crude ore status vs. concentrate for correct statistical breakout
• Test for soluble silica content that affects leaching efficiency and declaration accuracy
• Use double-lined containers for potentially acidic leach-prone ores