Magnesia-Chrome Refractory Brick
Magnesia-chrome refractory bricks combine magnesia and chrome ore, fired to create dense blocks for lining steelmaking furnaces and rotary kilns. They offer superior resistance to basic slags and high temperatures. Falls under HTS 6902.90.50 as 'other' refractory ceramic constructional goods, excluding siliceous earths.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If principally containing chromite
Chromite-dominant refractories are specifically covered under heading 6903, separate from 'other' in 6902.
If derived from siliceous fossil meals
If made from materials like kieselguhr, it shifts to the siliceous earths subheading.
If imported as unfired refractory cement or mortar
Unfired preparations for refractory use are classified under Chapter 38, not fired goods of Chapter 69.
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Import Tips & Compliance
• Submit lab analysis confirming non-siliceous composition and post-firing status to distinguish from 6902.10
• Declare intended industrial end-use (e.g
• furnace lining) to prevent misclassification as building materials
Related Products under HTS 6902.90.50
Mullite Refractory Brick
Mullite refractory bricks, synthesized from kaolin and fired, used in aluminum smelters for creep resistance at 1600°C+. Excellent for reducing atmospheres. Classed HTS 6902.90.50 other refractories.
Andalusite Refractory Tile
Andalusite refractory tiles fired from andalusite ore for torpedo ladle linings in steel plants, offering thermal shock resistance. HTS 6902.90.50 applies.
Bauxite Refractory Brick
Bauxite-based refractory bricks fired for lime kilns and incinerators. Good load-bearing at high temps. HTS 6902.90.50.
Chamotte Refractory Block
Chamotte (fired clay grog) refractory blocks for general furnace construction. Stable volume, low deformation. HTS 6902.90.50.
Cordierite Refractory Brick
Cordierite bricks for tunnel kilns in ceramics industry, excellent thermal shock resistance. Fired magnesia-alumina-silicate. HTS 6902.90.50.
High-Alumina Refractory Firebrick
High-alumina refractory firebricks are ceramic bricks composed primarily of alumina, fired at high temperatures to withstand extreme heat above 1500°C. They are used in furnace linings and kilns for their excellent thermal shock resistance and corrosion resistance. Classified under HTS 6902.90.50 as refractory ceramic constructional goods other than siliceous fossil meals, due to their fired ceramic composition for high-temperature industrial applications.