phil rogers on thu 28 jul 05
CLAYART Digest - 26 Jul 2005 to 27 Jul 2005 (#2005-204)Also I have a =
local supplier of refractory brick. I would also like to kn=3D
>ow
>is this brick would hold up well in salt/soda firing.
>
>ZETA Brick
>Silica 63%
>Alumina 34%
>Iron Oxide 1%
>Calcium 0.8%
>Magnesium 0.8%
>
Spencer R. Wilson
>Fresnillo, Zacatecas, Mexico
>Definitely south of the border.
I don't think this brick will do at all well in a salt kiln. There is =
too much silica. You should look for a brick with at least 43% alumina. =
Zirconium is salt resistant and is the active ingredient in a well known =
kiln coating in the UK. I include it in my kiln wash for the fireboxes =
in my salt kiln. However, I would look very carefully at the Alumina =
content before deciding to use them.
Phil Rogers.
Craig Clark on thu 28 jul 05
phil rogers wrote:
>CLAYART Digest - 26 Jul 2005 to 27 Jul 2005 (#2005-204)Also I have a local supplier of refractory brick. I would also like to kn=
>
>
>>ow
>>is this brick would hold up well in salt/soda firing.
>>
>>ZETA Brick
>>Silica 63%
>>Alumina 34%
>>Iron Oxide 1%
>>Calcium 0.8%
>>Magnesium 0.8%
>>
>>
>>
> There is too much silica. You should look for a brick with at least 43% alumina. Zirconium is salt resistant and is the active ingredient in a well known kiln coating in the UK. I include it in my kiln wash for the fireboxes in my salt kiln. However, I would look very carefully at the Alumina content before deciding to use them.
>
> Phil Rogers.
>
>Just to piggy back on what Phil has said.....the percentage of alumina is too low if you want to get any real life out your bricks. The salt will make realativly short work of them. I helped design and build a coupla salt over ten years ago and we ended up putting Kruzite 70's in the 80 cubic foot one. It is still working fine and the bricks are holding up quite well. The higher alumina fire brick will cost more but they last a lot more time.
>
>
Hope this helps
Craig Dunn CLark
619 East 11 1/2 st
Houston, Texas 77008
(713)861-2083
mudman@hal-pc.org
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