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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unroasted or partially processed ore residue
Direct tungsten ore residues stay in 2613, not general 2620 slag.
If refined to tungsten trioxide
Purified chemical compounds of tungsten move to Chapter 28.
If containing mainly other metals like molybdenum
Subheading changes based on predominant metal content.
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Import Tips & Compliance
• Report assay quantity of tungsten per statistical note requirements
• Document roasting process to distinguish from ore slurries
Related Products under HTS 2620.99.20.00
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.
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.