Dead Burned Calcined Dolomite for Steel Flux from Mexico
High-purity calcined dolomite dead-burned at 1700°C+ for use as fluxing agent in basic oxygen steelmaking converters. HTS 2518.20.00.00 covers this sintered/calcined form, differentiated from raw dolomite by its reactivity and thermal stability.
Duty Rate — Mexico → United States
13%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include XRF analysis showing >40% MgO post-calcination to validate refractory specification
• Declare particle size distribution if powdered to avoid confusion with agglomerated products
• Confirm no additives present, as mixtures could fall under 3824 prepared binders