[Stoves] Stoves using wood and charcoal at the same time

[Tom Miles]

Potash (or carbonate of potash) is an impure form of potassium carbonate
(K2CO3) mixed with other potassium salts.

Potash has been used since antiquity in the manufacture of glass and soap
and as a fertilizer. The name comes from the English words pot and ash,
referring to its discovery in the water-soluble fraction of wood ash.

--Wikipedia
--------------------------
If you taste it you'll find that it is salty. It's probably potassium, the
ingredient for lye soap. 

Tom

-----Original Message-----
From: stoves-bounces at listserv.repp.org
[mailto:stoves-bounces at listserv.repp.org] On Behalf Of Alex and Christine
English
Sent: Sunday, November 04, 2007 4:31 AM
To: Discussion of biomass cooking stoves
Subject: Re: [Stoves] Stoves using wood and charcoal at the same time

Dean  and Peter,

During our hay burning trials we had a white powder deposit on water cooled
surfaces.
Tom Miles suggested at the time that it was likely a potasium sulfate or
chloride. It 
was a good example of ash condensation.

Alex

> Dear Dean,
> 
> Could it be ash?
> 
> Peter Verhaart
> 
> 
> Dean Still wrote:
> > Dear Tom,
> >
> > Here's a question that has puzzled me for years. What is the white
deposit
> > left by burning charcoal on the bottom of the pot?
> >
> > All Best,
> >
> > Dean
> 
> 
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> 
> 




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