#11  
Old 06-30-2008, 02:18 PM
Breven's Avatar
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Default Re: Do these firebricks look right?

I only have one brick yard in the area. They sell brick, block, stone etc. They had the Mortar Clay, but they referred to it as Fire Clay.
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  #12  
Old 06-30-2008, 03:01 PM
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Default Re: Do these firebricks look right?

The fireclay I used just said "refractory" on the bag...so I had a similar question. But I did not use if for mortar, just as a bed to lay the floor on and used heatstop for the oven....

What do those bricks weigh each? I can't remember what they SHOULD weigh, but someone else probably does. That is generally a good way to know that they are not the high duty bricks, those are very light and generally very expensive...bottom line is those look ok to me.

Drake
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  #13  
Old 06-30-2008, 03:06 PM
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Default Re: Do these firebricks look right?

What is heatstop? I haven't heard of that before...

Not sure what they weight. They weren't light though. I've never actually held a standard red clay brick in my hand, so I don't really have a frame of reference.
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  #14  
Old 06-30-2008, 04:11 PM
Peasant
 
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Location: Rochester,N.Y.
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Default Re: Do these firebricks look right?

I just found my firebrick at a local brickyard and they were able to provide an MDS sheet showing alumina content of 30%, apparently perfect for low-duty firebrick judging from other posts I read. Mine are 9 inches, a bit larger than the red firebrick also sold by the same yard but the red had a lower temperature rating. The yellow higher rated brick cost $1.28@ for full brick or a split and weigh aout 6 or 7 pounds. Earlier, I found standard sized firebrick (smaller than mine) at a substantially higher price. They had a higher alumina content and presumably were medium or high duty which all seem to agree is not needed. Hope this helps.
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  #15  
Old 06-30-2008, 04:18 PM
Breven's Avatar
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Default Re: Do these firebricks look right?

I'm going to weigh my brick when I get home tonight. I did measure the length and they were 9 inches as well. I may go back and ask for an MDS sheet. Since I only had a choice between option A or option A, I jsut went with option A. I paid $1.02 per brick.
Thanks for the insight...
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  #16  
Old 06-30-2008, 06:40 PM
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Default Re: Do these firebricks look right?

weigh them, that is the easiest way. They look like Diatom semi insulating bricks.
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  #17  
Old 06-30-2008, 07:57 PM
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Default Re: Do these firebricks look right?

The bricks weigh 8lbs each and they are 9 x 4-1\2 ...?
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  #18  
Old 06-30-2008, 08:23 PM
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Default Re: Do these firebricks look right?

normal fire brick weighs about 4kg, vs insulating bricks @ 1-2 kg.
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Old 06-30-2008, 08:56 PM
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Default Re: Do these firebricks look right?

Those bricks sound good to me. About the right weight and cost!!

Heatstop (or better yet refmix sold by fornobravo) are true refractory mortars. The fireclay portland mix is a decent substitute, but if you can afford it, these mortars are better and I think easier to work with...
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  #20  
Old 07-01-2008, 04:23 AM
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Default Re: Do these firebricks look right?

Sounds like firebricks to me....

I found that my used firebricks ranged from white to red....some yellow and orange.....kodachrome

My dome is an interesting mix of brick colors!
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