Phosphate-Bonded Alumina Brick
Refractory bricks using phosphate binders with >50% alumina for improved strength in backup linings. Meets Chapter 69 firing requirements using inorganic nonmetallic materials. Alumina brick classification 6902.20.10.10.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as raw phosphate refractory compounds
Unshaped chemical compounds exclude from shaped ceramic goods.
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Import Tips & Compliance
• Disclose binder type in technical data sheets; phosphates allowed per chapter raw materials
• Average water absorption if mixed cast/jiggered per US note for set patterns (though not applicable here)
• Avoid bulk bags; use crates to prevent powder contamination from binders
Related Products under HTS 6902.20.10.10
High-Alumina Firebrick
High-alumina firebrick containing over 50% alumina (Al2O3), fired after shaping for high-temperature resistance. Used in furnaces and kilns for lining to withstand extreme heat. Classifies under 6902.20.10.10 as refractory bricks made primarily of alumina.
Kiln Car Alumina Brick
Heavy-duty alumina bricks (>50% Al2O3) for kiln car tops and supports in ceramic firing kilns. Provides structural stability at high temperatures post-firing. Classed as alumina refractory bricks in 6902.20.10.10.
Glass Tank Alumina Furnace Brick
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90% Alumina Refractory Brick
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Blast Furnace Alumina Brick
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Rotary Kiln Alumina Lining Brick
Specialized bricks with high alumina content for lining rotary cement kilns, resisting abrasion and alkali attack. Fired inorganic nonmetallic ceramic per chapter definition. Imports under 6902.20.10.10 as alumina bricks.