[Stoves] Diatomous earth insulative kiln bricks

[Dean Still]

Hi Paul,

We make vermiculite/clay bricks that seem to last in the Rocket stove. You
can see how to make them in the movie at:

 http://www.aprovecho.org/web-content/media/media.html

The Skamol material looks great on their web site. They say that it is
abrasion resistant. What is your impression? Is it expensive? How long has
it lasted in your stove?

All Best,

Dean


Hello Steve If the diatomite bricks you  are planning to use are the "Moler"
variety they will only be rated as suitable for use at around 800oC so I
would not expect them to last very long if you use the stoves for long
periods.

 

 A better bet are the vermiculite bricks made by the same Danish company.
msa at skamol.dk 

These I have tried for the same purpose in rocket stoves (They are rated to
1100oC) they are used in thinner slab form in wood stoves and can be bought
in good wood stove shops. 

 

 Crispin mentions using washes as a means of perhaps delaying the
inevitable. Purimachos in Bristol UK make a number of refractory glaze
washes but ive never tried them on this type of brick.

      What you may also consider are the various castable refractories that
they make for this project.

I too may be doing something similar in my neck of the woods so if you need
more help with refractories get in touch.

 Paul Stubbs ( potter, kiln builder, potters tool maker,long term stove
enthusiast) 

  

 

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