fire brick

Discussion in 'Chemistry' started by sculptor, Jan 13, 2021 at 6:22 PM.

  1. sculptor Valued Senior Member

    Messages:
    7,223
    My wood burning stove needs new firebrick
    unfortunately the manufacturer is out of business and the firebricks are an odd size
    ok now the question
    I was thinking of adding
    Sodium Silicate (sometimes called water glass) to this batch but have never used it before

    normal batch would include silica sand, cement, perlite, and fire-clay
    so
    should one of the normal components be reduced if adding liquid sodium silicate water solution?

    your thoughts?
     
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  3. exchemist Valued Senior Member

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    10,084
    This is quite a specialised field. I'm afraid I have no expertise in it. I see that sodium metasilicate does indeed have applications in refractory ceramics, but that's about it.
     
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  5. Xelasnave.1947 Valued Senior Member

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    Just get some clay ( from the side of road in my case) add 5% more sand, a bit of saw dust, make your brick a little bigger than you need , let it dry, file it down to fit , fire it and that should work.
    Alex
     
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