[TheForge] Firebrick

Mon Feb 10 10:04:00 2003

Diatoms are made of silica.

Lance
CA
----- Original Message -----
From: "Bruce Freeman" <[email protected]>
To: <[email protected]>
Sent: Monday, February 10, 2003 6:18 AM
Subject: Re: [TheForge] Firebrick

Other than that it contained calcium, I don't know.  So, I'd presume
limestone.

Bruce
NJ

>>> [email protected] 02/07/03 02:45PM >>>

what flux? salt, borax, sand?

 Bruce Freeman <[email protected]> wrote:It seems to me that insulating
firebrick is diatomaceous earth + enough flux to bind it together when it is
fired. Anyone know more about this? I was wondering if we might have a
short-cut (or cheap-cut) here.

Bruce
NJ

>>> [email protected] 02/05/03 07:09PM >>>
If you want insulating firebrick, the construction grade won't do. You
want the lighter ones that weigh 3 1/2 pounds, or less. Try a ceramic
supply house. They are used for building ceramic kilns.

Ken Zastrow
the copper heron forge

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