Sintered Magnesia 92% with Iron Oxide
Dead-burned magnesia containing 92% MgO with controlled iron oxide additions for enhanced sintering, used in basic oxygen furnace refractories. Properly classified in HTS 2519.90.10.00 as sintered magnesia permitting small quantities of other oxides added before sintering.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If natural micaceous iron oxide content dominates
Chapter notes specifically direct micaceous iron oxides to heading 2530 regardless of other magnesia content.
If mixed with binders for investment casting molds
Magnesia refractories containing chemical binders become investment casting refractories in 3816.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Batch certificates must show oxide additions occurred pre-sintering, not post-processing blending
• Iron oxide content >5% may trigger review for micaceous iron oxide classification under 2530.90
• Specify grain sizing (0-5mm typical) matches refractory ramming mix requirements
Related Products under HTS 2519.90.10.00
Dead-burned Magnesia DBM-95
Dead-burned magnesia sintered at 1700-2200°C from calcined magnesite, achieving low reactivity and high hydration resistance with 95% MgO content. Falls under HTS 2519.90.10.00 as sintered magnesia, essential for basic refractory bricks in cement kilns and non-ferrous metal furnaces.
Fused Magnesia FM-P 99.5% for EAF
Premium fused magnesia with 99.5% MgO purity, electric arc fused for electric arc furnace (EAF) refractories, featuring exceptional corrosion resistance. HTS 2519.90.10.00 classification applies to this fused magnesia product used in high-purity steel production.
Large Crystal Fused Magnesia 97%
Fused magnesia featuring large periclase crystals (>100μm) for superior thermal stability in ladle refractories, 97% MgO purity. HTS 2519.90.10.00 covers this fused magnesia critical for secondary steelmaking.
Dead-burned Magnesia 0-100mm for Rotary Kilns
Coarse-grained dead-burned magnesia sized 0-100mm for rotary kiln linings in cement production, featuring low bulk density for thermal insulation. Classified under HTS 2519.90.10.00 as sintered magnesia for heavy-duty refractory applications.
Electro-fused Magnesia 98% Purity
High-purity electro-fused magnesia produced by melting magnesite in an electric arc furnace at temperatures exceeding 2800°C, resulting in a dense crystalline structure. Classified under HTS 2519.90.10.00 as fused magnesia, ideal for refractory linings in steelmaking due to its high resistance to slag and thermal shock.