#11  
Old 02-04-2010, 01:21 AM
Serf
 
Join Date: Nov 2009
Location: London
Posts: 15
Default Re: New 30% alumina firebrick -uk

Hi Terry,

Will let you know where I end up getting them. I'm not giving up on the company original recommended in this thread, just having trouble getting a quote out of them. It would be nice to get some feedback from someone who has actually bought bricks from them. The price, 0.45 plus VAT, sounds almost to good to be true.

I'll try to take some pics.

Cheers
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  #12  
Old 02-04-2010, 12:51 PM
Journeyman
 
Join Date: Jun 2008
Location: Melbourne Australia
Posts: 399
Default Re: New 30% alumina firebrick -uk

Quote:
Originally Posted by karl View Post
I suggest you compare the mechanical properties of the bricks you suggest with those of the "normal" fire bricks:

"A refractory brick is built primarily to withstand high heat, but should also usually have a low thermal conductivity to save energy. Usually dense firebricks are used in applications with extreme mechanical, chemical, or thermal stresses, such as the inside of a wood-fired kiln or a furnace, which is subject to abrasion from wood, fluxing from ash or slag, and high temperatures. In other, less harsh situations, such as a natural gas fired kiln, more porous bricks are a better choice. They are weaker, but they are much lighter, easier to form, and insulate far better than dense bricks. In any case, firebricks should not spall under rapid temperature change, and their strength should hold up well during rapid temperature changes."

regards from Karl
This quotation is fine for insulation bricks but totally wrong for WFO application.
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  #13  
Old 02-17-2010, 04:14 AM
Serf
 
Join Date: Nov 2009
Location: London
Posts: 15
Default Re: New 30% alumina firebrick -uk

Finally ended up ordering bricks and dry high heat mortar (16.00 for 25kg bag) from Sheffield Refractories Ltd. Refractories Manufacturer and Supplier . They were very nice to work with and also gave me a better price than anywhere else. 1.10 for new 230x114x76. The alumina content is %42 which is a little higher than I wanted but hopefully they will work.

I also tried intocast UK email, tj@intocast.co.uk, as well as the others mentioned in this thread, but the prices were not as good.

Last edited by nrobert; 02-17-2010 at 05:40 AM.
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  #14  
Old 02-17-2010, 07:49 AM
Apprentice
 
Join Date: Jul 2008
Location: Norway
Posts: 118
Default Re: New 30% alumina firebrick -uk

nrobert:
Excellent.
Jhonny the oven man:
I don not really understand what you think is irrelevant in the quote? It explains how the properties in bricks differ depending on (primarily) density (Al/Si content).
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