Zinc Silicate Ore Concentrate Borderline from Canada
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 — Canada → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 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