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Post by smartliketruck on Jul 20, 2018 13:37:12 GMT -8
My local masonry supply doesn't list ceramic fiber board, but they do list calcium silicate pipe insulation in many shapes. The brand & type is IIG T12 Gold, it lists max temp for listed use as 1200°F (650°C).
Does anyone have any experience with how this material performs in the firebox and or riser?
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Post by Vortex on Jul 20, 2018 14:57:52 GMT -8
I'm using 1" thick boards of it as insulation behind cast refractory firebox sides. I got it from a kiln supplier, IIRC it was rated at 1000*C. It's very delicate, so I doubt it would last long in a firebox or riser even if it could take the temps.
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Deleted
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Post by Deleted on Jul 21, 2018 9:19:31 GMT -8
Depends on the used binder.
The melting point of calcium silicate is high enough for a riser.
English Wikipedia
Melting point 2,130[2] °C (3,870 °F; 2,400 K)
German Wikipedia
ca. 1700 °C
The National Institute for Occupational Safety and Health (NIOSH)
1540°C / 2804°F
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Post by smartliketruck on Jul 21, 2018 15:09:07 GMT -8
The first SDS I looked at only listed Calcium Silicate and Cellulose fiber, the second one gave a little more insight
Synthetic Calcium Silicate >90% Sodium Silicate 0-6% Cellulose Fiber 0-4% Synthetic Cellulose Fiber 0-4% Synthetic Vitreous Fiber 0-4% Iron Based Colour 0-1%
Hopefully I can get a piece in hand without having to buy a +$100 CAD carton of the stuff
Sure would be nice to have all those preformed shapes that can just be cut & "glued" together
I guess for now I'll carry on with my flyash trials as time allows.
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Post by Vortex on Jul 27, 2018 1:25:17 GMT -8
I tried a piece of my 1000*C rated 1" calcium silicate board as a firebox roof last night, it buckled and cracked up within the first 5 minutes.
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Post by smartliketruck on Jul 27, 2018 13:19:17 GMT -8
Thanks for trying it.
I wasn't able to get a sample from my local supplier but they did have 1 inch 8 pound density ceramic blanket on the shelf, so I sprung for a 50 square foot carton. I figure this with a simple rigidizer will be my next best option.
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Post by Vortex on Jul 28, 2018 8:39:33 GMT -8
I've been mostly using vermiculite board and firebricks for for my experiments, the vermiculite board cracks after a few dozen firings but lasts long enough to work out what works and what doesn't. If it's a riser you want to make with the ceramic blanket I'd recommend Pinhead's 5 minute riser: www.facebook.com/photo.php?fbid=10154992096951974&l=3e4ec1844f |
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