[Stoves] Sodium Silicate

[Patrick Wardell]

I was researching Fly Ash a couple of years ago as a filler for polymers. I know nothing about chemistry, but could Fly Ash be combined with Sodium Silicate to create a refractory that is light and insulative?

Check out the following to learn more:
http://en.wikipedia.org/wiki/Fly_ash
http://en.wikipedia.org/wiki/Cenosphere

Patrick J. Wardell
Meadow Vista,  CA




----- Original Message ----
From: David G. LeVine <dlevine at speakeasy.net>
To: Discussion of biomass cooking stoves <stoves at listserv.repp.org>
Sent: Sunday, March 11, 2007 12:55:13 PM
Subject: Re: [Stoves] Sodium Silicate


At 06:48 AM 3/11/2007, you wrote:
>In a lengthy discussion last night it became clear that no one in the
>room knew what the chemistry of this bonding is.

Take a look at http://en.wikipedia.org/wiki/Sodium_silicate for one 
view.  In the metal casting groups, sodium silicate (AKA water glass) 
changes in the presence of CO2 (and no, I don't remember the 
chemistry.  I hope these give someone a good starting place.


David G. LeVine
Nashua, NH  03060


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