Tungsten Smelting Slag
Residue from the smelting process of tungsten ores, primarily consisting of tungsten compounds and minor metal impurities. Classified under HTS 2620.99.20.00 as slag containing mainly tungsten, used in industry for metal recovery or chemical manufacturing. Excludes iron/steel production residues.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If derived directly from roasted tungsten ore processing
Roasted mineral residues containing tungsten classify under Chapter 26 as ore residues, not general slag.
If processed into refined tungsten waste or scrap
Refined metal wastes fall under Chapter 81 specific to tungsten, not unrefined slag.
If from municipal waste incineration
Chapter notes exclude incineration ash from heading 2620; moves to waste residues.
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Import Tips & Compliance
• Provide assay certificates verifying tungsten as the main metal content per statistical notes
• Ensure documentation proves industrial use for metal extraction to avoid misclassification
• Avoid common pitfalls like confusing with municipal waste ash (HTS 2621)
Related Products under HTS 2620.99.20.00
Tungsten Carbide Production Ash
Ash residue generated during the manufacture of tungsten carbide tools, rich in tungsten compounds. Falls under HTS 2620.99.20.00 due to its primary tungsten content and use in recovering metals for chemical compounds. Not from iron/steel making.
Tungsten Recovery Plant Ash
Ash from solvent extraction plants recovering tungsten from low-grade sources, mainly tungsten content. HTS 2620.99.20.00 covers this as industrial residue for further metal extraction or compounds. Excludes waste incineration products.
Spent Tungsten Catalyst Residue
Residue from deactivated petroleum catalysts containing primarily tungsten oxides. HTS 2620.99.20.00 applies to such ash used for tungsten recovery industrially. Excludes incinerated waste.
Tungsten Wire Drawing Slag
Slag byproduct from drawing tungsten wires for lighting, mainly tungsten particles. Under HTS 2620.99.20.00 as metal-containing residue for re-melting. Industrial use per chapter notes.
Hard Metal Alloy Slag
Slag from melting hard metal alloys where tungsten is the dominant component, used in tooling industries. HTS 2620.99.20.00 applies as other slag/residues containing mainly tungsten for metal extraction. Excludes municipal or iron/steel ash.
Tungsten Ore Roasting Residue
Residue from roasting tungsten-bearing ores, primarily tungsten oxides and compounds. Classified in HTS 2620.99.20.00 for non-iron/steel slag used in metal or chemical compound production. Meets chapter note for industrial application.