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46% Alumina content too high? - Forno Bravo Forum: The Wood-Fired Oven Community

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46% Alumina content too high?

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  • 46% Alumina content too high?

    Hello All,

    Another South Australian here about to embark on the building of a wood oven.

    As has been mentioned in this forum - firebricks here in SA cost around $5 each.

    I have come across some free fire bricks (enough for the hearth - will use red brick for the dome) and am unsure if they are suitable for the oven.

    I found the 'specs' for the bricks online and they are 50% Silica and 46% Alumina. I have a feeling the Alumina content is too high for this application - can anyone confirm.

    Thanks heaps,

    Peter
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