[Stoves] Crispin and His Refractories

[Jeff Davis]

Dear Crispin and All,


Crispin wrote:
> I looked into what is put into insulative refractory bricks and a
> surprisingly large proportion of the mix is ground up insulative
> refractory
> bricks!  The material is recycled! Dang!

Yes, this is called "grog".



> Thus the long life 6-brick chamber  is
> elusive because you first have to find a flexible, insulative, low
> heat-conducting, strong, low thermal expansion, low-firing-temperature
> clay
> in the local area.


OK, what would be the correct term for this material if it is not a
refractory material? (my mistake)


Looks like I can cross off microballoons. You saved me sometime!!!


Thank's


Jeff



-- 
Jeff Davis

Some where 20 miles south of Lake Erie, USA