Stephani Stephenson on sat 9 may 09
Reading archives i saw some posts suggesting that pumice at lower temps i=
=3D
s best used as=3D20
claybody temper and comes into play as felspar sub/flux at higher temps.=
=3D
..still leaves open=3D20
the question of midrange. also of course the question as Ivor stated, of =
=3D
variation in material=3D20
from different sources.
but i thought the following was interesting
I came across the following article from university in Tokat, Turkey:
has some interesting test results having to do with increasing additions=
=3D
of pumice=3D20
to brick clays at 3 different temperatures.=3D20
tested for absorption, compression strength, insulating properties, dryin=
=3D
g, etc.
Quantitative analysis of pumice effect on some physical and mechanical pr=
=3D
operties of bricks
http://198.170.104.138/jas/2008/1340-1345.pdf
Stephani Stephenson
Ron Roy on sat 9 may 09
Hi Stephani,
Best to find out if a stable supply can be found and then test to see if it
will help melting at cone 1 to 3 - mixing 50/50 with EPK and testing for
absorbency at those cones will confirm if it would help melting.
I would warn about using whiting as a flux - if you get any balling up when
mixing you will then get lime popping. Not much of a flux at that
temperature anyway.
RR
On Sat, May 9, 2009 at 11:29 AM, Stephani Stephenson m
> wrote:
> Reading archives i saw some posts suggesting that pumice at lower temps i=
s
> best used as
> claybody temper and comes into play as felspar sub/flux at higher
> temps...still leaves open
> the question of midrange. also of course the question as Ivor stated, of
> variation in material
> from different sources.
>
> but i thought the following was interesting
>
> I came across the following article from university in Tokat, Turkey:
> has some interesting test results having to do with increasing additions
> of pumice
> to brick clays at 3 different temperatures.
> tested for absorption, compression strength, insulating properties, dryin=
g,
> etc.
>
>
> Quantitative analysis of pumice effect on some physical and mechanical
> properties of bricks
>
> http://198.170.104.138/jas/2008/1340-1345.pdf
>
>
> Stephani Stephenson
>
--
Ron Roy
15084 Little Lake Road
Brighton, Ontario, Canada
K0K 1H0
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