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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If from coal gasification or incineration
Specific ash types like coal gas residues go to 2621, excluded from 2620 industrial scope.
If refined copper cathode waste
Processed copper waste products shift to Chapter 74 refined copper headings.
If other copper ore residues
Roasted/unroasted ore tailings may classify under 2613 if not slag/ash form.
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Import Tips & Compliance
• Submit particle size and metal assays; note statistical rules for coarse vs fine if applicable analogously
• Ensure not from municipal incinerators to avoid 2621; include smelter source affidavits
• Watch for undervaluation pitfalls; base value on recoverable silver/copper content
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.
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.
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).