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Stove fire bricks


dor

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There seems to be a huge variation in the cost of fire bricks.  I’ve just bought a set of three for my Stovax 1a for £25 delivered 2 day service.

 They seem to be just as good as any others I’ve had, with good density.  Others often over £40 with delivery on top.

All vermiculite of course.

Is there really much difference between them?

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3 minutes ago, dor said:

Is there really much difference between them?

Yes - the ones in my Bubble corner stove are at the expensive end, so they'll probably be replaced only when they're knackered and one at a time instead of as a set! ;) I don't think they're vermiculite though - too hard and heavy I'd have thought..

 

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4 hours ago, dor said:

There seems to be a huge variation in the cost of fire bricks.  I’ve just bought a set of three for my Stovax 1a for £25 delivered 2 day service.

 They seem to be just as good as any others I’ve had, with good density.  Others often over £40 with delivery on top.

All vermiculite of course.

Is there really much difference between them?

Fire bricks are usually clay based and tend to have high silicate content. The way they are fired when they are made gives them the 'fire' properties. Some will be better than others. Probably something about the silicate content. Not a clue how you actually assess them.

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If your any good with a bolster and hammer like a Brickie, just chop ordinary Fletton house bricks to size. Proper fire bricks are not really all that necessary in our stove, they are really for very high heat industrial boiler furnaces that are often run at white hot, steam railway loco's for example. Folk talk about house bricks exploding when heated up through trapped air in them, which is rubbish, they would have exploded in the kiln being fired in manufacture if they'e going to do that, which indeed some do and are binned.

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13 hours ago, bizzard said:

If your any good with a bolster and hammer like a Brickie, just chop ordinary Fletton house bricks to size. Proper fire bricks are not really all that necessary in our stove, they are really for very high heat industrial boiler furnaces that are often run at white hot, steam railway loco's for example. Folk talk about house bricks exploding when heated up through trapped air in them, which is rubbish, they would have exploded in the kiln being fired in manufacture if they'e going to do that, which indeed some do and are binned.

My furnace at home is made of a couple of dozen house bricks in a sort of cylinder wrapped in mesh and 'rendered' inside and outside with ordinary cement. it is fired with smokeless coal and has an ex bouncy castle blower. It easily gets over 1000 deg. C and melts brass and bronze with ease, melts iron too but not hot enough to cast with. Bricks have been there for 10 years and absolutely fine but have the same vitrified glassy coating that old houses in San Francisco have that were  built using reclaimed bricks from the earthquake and fire in 19--(?), 

  • Greenie 1
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