Magnesia Spinel Refractory Blocks
Magnesia Spinel Refractory Blocks are pre-fired blocks combining magnesia with spinel (MgAl2O4), where the MgO content exceeds 50%, used in cement kiln burning zones. These blocks offer superior thermal spalling resistance and are fired after shaping to achieve the required density. They are classified under 6902.10.00 as refractory ceramic constructional goods with a magnesia content exceeding 50%.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
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- HC
Consumer Products Safety · May be required
May require HC Consumer Products Safety depending on intended use (HC21) and Canadian product category (HC29, HC30, HC31, HC32, HC33, HC34, HC35, HC36, HC37); or intended use (HC22, HC23, HC24, HC26, HC27) and Canadian product category (HC37). Matching criteria: Starts With 69021000; Starts With 69021000; Equal To 6902100010; Equal To 6902100090; Equal To 6902100010; Equal To 6902100090. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
CBSA Single Window matching criteria, unknown
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 the MgO content is 50% or less
This heading covers refractory blocks with other chemical compositions, such as alumina-chrome or silica-based.
If the alumina content exceeds the magnesia content
Refractory articles containing more than 50% alumina fall under this heading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide a certificate of analysis showing the MgO content exceeds 50% to support classification
• Verify that the blocks have been fired after shaping, as per Chapter 69 legal notes
• If the product contains spinel, ensure the alumina content does not affect the classification under 6902.10.00
Related Products under Tariff item 6902.10.00
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Direct-Bonded Magnesia Chrome Bricks
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