Metallurgical Grade Magnesite
Medium-purity natural magnesite (90% MgCO3) specifically sized for dead-burning into refractory bricks used in steel furnaces. Remains under HTS 2519.10.00.00 as the uncalcined natural carbonate mineral.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If already formed into refractory bricks
Completed refractory products of magnesite fall under Chapter 69, not raw materials.
If purified to hydroxide form
Magnesium hydroxide (brucite) from magnesite processing classified separately from carbonate.
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Import Tips & Compliance
• Specify loss-on-ignition (LOI) values (45-50%) confirming carbonate nature vs pre-calcined material
• Include end-use letters from steel mills verifying refractory application for potential duty drawback
• Monitor Australian/Chinese origin quotas as major suppliers face periodic trade restrictions
Related Products under HTS 2519.10.00.00
Raw Magnesite Ore
Natural magnesium carbonate ore extracted from magnesite deposits, typically containing 85-95% MgCO3 with impurities like silica and iron oxides. It falls under HTS 2519.10.00.00 as unprocessed natural magnesite used primarily as feedstock for refractory and chemical production.
Magnesite Lump Rock
Coarsely crushed natural magnesite in lump form (typically 6-150mm), directly from mining operations without beneficiation. Classified under HTS 2519.10.00.00 as it remains natural magnesium carbonate suitable for further processing into refractories.
Floatation Grade Magnesite
Beneficiated magnesite concentrate from froth flotation process, achieving 95%+ MgCO3 purity while remaining chemically unchanged natural carbonate. HTS 2519.10.00.00 applies as physical separation doesn't alter mineral composition.
Chemical Grade Magnesite Powder
Micronized natural magnesite ground to 10-50 micron particle size for fertilizer and chemical applications, retaining full MgCO3 composition. HTS 2519.10.00.00 covers this physically processed but chemically unchanged mineral.
Dead-Burn Refractory Magnesite
Large-particle natural magnesite (2-6mm) used directly as soil amendment in agriculture to supply magnesium and neutralize acidity. Classified HTS 2519.10.00.00 as unprocessed magnesium carbonate mineral.
Greek Magnesite Ore
Premium cryptocrystalline magnesite from Kozani deposits in Greece, known for 97% MgCO3 purity and low impurities. HTS 2519.10.00.00 as natural magnesium carbonate from specific high-quality geological source.