Originally posted by Gulf
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Refractory mortar query
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Re: Refractory mortar query
Bob,
I believe that I read that you could get the wet saw. If you do, and you are using firebrick,: Cut your floor bricks and precut a couple of rows of your dome. Screen the collections in your wet saw's pan and use that as a substitute for the fire clay. By doing this you can stay ahead of the game and you will end up with more fire clay than you need .
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Re: Refractory mortar query
Noted thanks. I'll check around some more to see if I can get some fire clay in small quantity.
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Re: Refractory mortar query
No it should not make a difference. The mortar hasn't been fired so it won't be denser than the bricks anyway. Refractory mortar is overkill IMO because it is designed to sustain temps about three times what we use. It is trickier to use because it goes off faster, the home brew is quite suitable for our purposes, works well, easy to apply and is cheap.
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Re: Refractory mortar query
So, then no dif? High density mortar with lower density bricks, no problemo with mixing the two?
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Re: Refractory mortar query
It is the density of the firebrick that allows it to heat faster and store more heat. Low density is more insulating. Generally the higher duty bricks are denser, fired to a higher temperature and contain less silica. The high density also means they're harder to cut. The low silica content has more to do with the really high temperatures (that we get nowhere near) when silica being a glass former tends to melt and create problems.
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Re: Refractory mortar query
Originally posted by Filthymutt View PostI read that with firebrick if the alumina content is too high that meant the temps will get too high for pizza.
Kilojoules in equals Kilojoules out minus some losses, the oven simply cant keep on getting hotter.
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Refractory mortar query
Finally found a place that will sell in small quantity.
Can anyone tell if this stuff will be ok? Or is the Alumina content too high? I read that with firebrick if the alumina content is too high that meant the temps will get too high for pizza. But if I am using medium duty brick with high alumina mortar is it going to make a big difference?
refractory mortar for kiln and furnace
Min. Order: 1 Barrel
FOB Price: US $0.1-0.5 / Barrel
Place of Origin: CN;SHN ;
Al2O3 Content (%): 70% ;
Model Number: refractory mortar ;
Refractoriness (Degree): Common (1580?< Refractoriness< 1770?) Pretty sure that is in Celsius
BobTags: None
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