Leaching Residue from Copper-Silver Ore Processing
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as copper ore concentrates
Unleached ore concentrates remain under heading 2617, while post-leach residues move to 2620.
If colloidal silver compounds extracted
Isolated silver chemical compounds fall under Chapter 28 inorganic chemicals, not residues.
If derived from iron/steel manufacturing
Ferrous slag/ash residues are excluded from 2620 and classified under Chapter 72.
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Import Tips & Compliance
• 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
Related Products under HTS 2620.30.00.40
Copper Smelter Slag with Silver Residue
Residue from copper smelting processes containing mainly copper along with silver content, used for metal extraction. Classified under HTS 2620.30.0040 due to its primary copper composition and reportable silver assay quantity per statistical notes. Excludes iron/steel manufacture residues and municipal waste ash.
Flue Dust from Copper Smelters with Silver Particles
Fine ash and dust captured from copper smelter flue gases, mainly copper with silver content for recovery. Classified in HTS 2620.30.0040 as copper-containing residues per chapter notes, excluding steel industry byproducts. Used as basis for metal compounds.
Secondary Copper Recovery Ash with Silver
Ash from recycling secondary copper scrap, mainly copper with silver impurities for extraction. Fits HTS 2620.30.0040 as non-ferrous slag/ash with silver content per statistical reporting. Industrial use for chemical compounds.
Copper Electrorefining Anode Slime with Silver
Slime residue from copper electrorefining anodes, primarily copper with significant silver content for precious metal recovery. HTS 2620.30.0040 applies to such copper-main slag/ash used industrially per heading 2620 notes. Silver assay reported statistically without deductions.
Pyrometallurgical Copper Slag with Silver Compounds
Slag from high-temperature pyrometallurgical copper processing containing silver compounds, predominantly copper matrix. HTS 2620.30.0040 for mainly copper residues used in industry per chapter note (a). Arsenic presence qualifies under note (b).