Leaching Residue from Copper-Silver Ore Processing from Canada
Ash-like residue from hydrometallurgical leaching of copper ores containing silver compounds, mainly copper-based. Falls under HTS 2620.30.0040 for copper-dominant residues with silver content used in chemical metal compound production. Meets chapter note (b) for arsenic/metal-containing industrial residues.
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 industrial end-use for metal/compound extraction to distinguish from waste under 2621
• Include detailed chemical analysis showing mainly copper with silver content for customs valuation
• Avoid bulk packaging pitfalls; label as industrial residue, not ore, to prevent Chapter 26 reclassification