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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If blended into finished fertilizer flux
Mixtures with >50% other fertilizers classify under Chapter 31 mineral fertilizers.
If unexpanded perlite-fluorspar mixtures
Heading 2530 covers vermiculite/perlite blends with fluorspar.
If gravel exceeding 97% purity
Same form but higher assay moves to metallurgical subheading.
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
• Certify low silica content (<5%) for fertilizer use to qualify for agricultural exemptions
• Declare exact screen sizes to distinguish from 'lump' or 'fines' for consistent valuation
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.
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.
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.