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Old 12-05-2007, 06:51 PM
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Location: grand rapids, michigan,usa
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Default Brick Question

I have a pile of bricks that were around, and underneath my old octopus furnace. I think that they are insulating bricks, but how can I be sure?
They are not the size of firebrick, they are the size of a standard brick, white and quite light. They are sort of sandy feeling, like firebrick, and the fact that they were around what was originally a coal fired chunk of cast iron leads me to think that they are insulating bricks and would be a perfect alternative to the hassle of pouring the vermiculite concrete, or the expense of SuperIsol.

Any ideas?
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  #2  
Old 12-05-2007, 07:46 PM
asudavew's Avatar
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Default Re: Brick Question

Quote:
Originally Posted by carrieanddan View Post
I have a pile of bricks that were around, and underneath my old octopus furnace. I think that they are insulating bricks, but how can I be sure?
They are not the size of firebrick, they are the size of a standard brick, white and quite light. They are sort of sandy feeling, like firebrick, and the fact that they were around what was originally a coal fired chunk of cast iron leads me to think that they are insulating bricks and would be a perfect alternative to the hassle of pouring the vermiculite concrete, or the expense of SuperIsol.

Any ideas?
How much do they weigh?
That's a good starting point.
Insulating bricks are quite light, while firebricks will weigh about 8 lbs or so.

And how bout some pics....they may help.

But they do sound like insulating bricks at this point.

Dwats
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Old 12-06-2007, 11:40 AM
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Default Re: Brick Question

I dug out a scale and weighed one of them... not as light as I thought. 4 pounds, 4 ounces. dimensions are 3 3/4"x8"x2 1/4".
I will try to get a photo with it next to a standard firebrick.

Thanks!

DAN
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Old 01-01-2008, 04:00 PM
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Default Re: Brick Question

Sound like insulating brick.

Keep a few. They will support a load and you will find them usefull for providing a "heat break " between the inside refractory dome and the outside finish when you go to build your portal / entrance.
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