PDA

View Full Version : Glaze on fire bricks


Lindsay MacArthur
August 21st 03, 12:10 AM
I wanted to know what kind of damage glaze can do to fire bricks on
the bottom of my kiln. If there is no structural damage to the bricks
or the kiln can I continue to fire with the drops of glaze there? I
never load on the bottom so no wares would be touching it directly.
Thanks for the help.
LMac

David Coggins
August 21st 03, 11:10 AM
Hi LMac,

Glaze contains strong fluxes to cause the silica to melt - they also have a
fluxing action on refractory brick.

The glaze drops will continue to melt and cause craters in the brick by
their fluxing action. A bit like the China Syndrome, they will keep melting
away until there is a big crater in the brick.

Dig them out now, and fill the hole with some refractory cement.

Dave


"Lindsay MacArthur" > wrote in message
...
> I wanted to know what kind of damage glaze can do to fire bricks on
> the bottom of my kiln. If there is no structural damage to the bricks
> or the kiln can I continue to fire with the drops of glaze there? I
> never load on the bottom so no wares would be touching it directly.
> Thanks for the help.
> LMac

Google