Converter Slag from Copper Pyrometallurgy with Gold
Converter slag from copper pyrometallurgy is a by-product of the converting stage in copper production, such as from Peirce-Smith converters. It consists mainly of copper sulfides and oxides with trace amounts of gold, and is used for the recovery of metals. This product falls under tariff item 2620.30.00 as a copper-predominant residue for metal or compound manufacture, not from iron or steel.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the slag contains arsenic, mercury, thallium or their mixtures
Subheading note 2 requires classification in 2620.60 for such residues.
If the slag is primarily for gold recovery and copper is incidental
Waste containing precious metals for recovery may be classified in Chapter 71.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the slag is from copper production and not from iron or steel manufacturing
• Provide assay documentation showing copper as the main metal content
• If gold content is significant, be aware of potential reporting requirements for precious metals under Canadian customs
Related Products under Tariff item 2620.30.00
Arsenic-Lead Copper Tailings Residue
Flotation tailings from copper ore processing, containing mainly copper along with lead and arsenic compounds, used for further metal extraction. This residue qualifies under tariff item 2620.30.00 as slag, ash and residues containing mainly copper, per the chapter notes for industrial metal recovery.
Brass Foundry Zinc Ash
Ash generated in brass (copper-zinc alloy) foundry operations, containing mainly copper with zinc, classified under tariff item 2620.30.00 for recovery of metals. This material qualifies under Chapter 26 notes for residues used in metal extraction.
Converter Copper Slag
Converter copper slag is a byproduct of the copper smelting process, primarily composed of copper compounds and oxides. It is used in the metallurgical industry for the recovery of copper and other metals, and is not derived from iron or steel manufacturing.
Copper Alloy Scrap Ash
Ash from incinerating copper alloy scrap with zinc, mainly copper, classified under tariff item 2620.30.00, excluding municipal waste per chapter notes. This material is used for zinc and copper extraction in industrial processes.
Copper Anode Slime
Copper anode slime is a residue from the electrolytic refining of copper anodes, containing mainly copper along with precious metals like gold and silver. It is used industrially for the extraction of copper and precious metals, falling under this tariff item as a copper-containing residue.
Copper Anode Slime Lead Residue
Precious metal-rich slime from copper anode refining, containing mainly copper with lead and arsenic, processed for extraction of metals. This residue falls under tariff item 2620.30.00 as slag, ash and residues containing mainly copper, used industrially for metal recovery.