Metallurgical Grade Fluorspar Fines
Crushed fluorspar fines with 95-97% CaF2 content, used as a fluxing agent in steelmaking to lower melting points. Classified under HTS 2529.21.00.00 as low-grade fluorspar chunks or powder not exceeding 97% calcium fluoride purity.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for fines exceeding 97% CaF2 purity
Purer fines qualify as high-grade metallurgical fluorspar in the adjacent subheading.
If chemically treated for specialized flux applications
Prepared chemical additives or mixtures shift to Chapter 38 for industrial preparations.
If contaminated with significant iron ore impurities
High iron content reclassifies as iron ores rather than fluorspar under Chapter 26.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide flux application end-use letter if borderline purity to support classification
• Use ventilated containers to prevent moisture absorption which affects CaF2 assay stability
Related Products under HTS 2529.21.00.00
Acid Grade Fluorspar Lump
Lump fluorspar containing approximately 97% calcium fluoride (CaF2), primarily used in the production of hydrofluoric acid for industrial chemical processes. This natural mineral extract falls under HTS 2529.21.00.00 due to its CaF2 content not exceeding 97% by weight and its raw, unprocessed form as fluorspar.
Ceramic Fluorspar Powder
Ground fluorspar powder at 96% CaF2 for use in ceramic glazes and enamels to improve fluidity. This product is specifically under HTS 2529.21.00.00 because it is natural fluorspar with CaF2 content at or below 97% weight, in crude or powdered form.
Fluorspar Briquettes Low Grade
Compressed low-grade fluorspar (94% CaF2) into briquettes for easier handling in aluminum smelting. Falls under HTS 2529.21.00.00 as agglomerated fluorspar not further worked, maintaining ≤97% CaF2 content.
Raw Fluorspar Chips for HF Production
Chipped fluorspar at 92-96% CaF2 uniformity, sized 10-50mm for feeding into hydrofluoric acid reactors. This raw material is classified in HTS 2529.21.00.00 for its sub-97% calcium fluoride concentration as natural fluorspar.
Fluorspar Gravel 95% CaF2
Natural fluorspar gravel screened to 3-10mm with 95% CaF2 for flux in phosphate fertilizer production. HTS 2529.21.00.00 applies to this ≤97% purity fluorspar in granular crude form.