Betty Burroughs on tue 26 may 98
I wonder if any of you have had a problem with using alumina hydrate in kiln
wash in an electric kiln. A friend of mine is convinced that the a-h she
used in wax resist as well as kiln wash on the shelves destroyed the
elements. When they needed to be replaced they came out in tiny pieces
instead of in one long coil. It took hours of pulling out all the fragments
with needle-nosed pliers. She says she remembers reading on Clayart a while
back that alumina hydrate gave problems in an electric kiln. Can any of you
enlighten me here?? I have just had my shelves sanded and am looking for a
good dependable wash recipe. TIA!
_____________________________
Betty Burroughs
Victoria, BC
Canada
Kim Marie on wed 27 may 98
When I changed the elements in my electric kiln (after years of intensive
firings) I was warned that the old ones would come out in pieces. They get
brittle after long periods of use. I'm pretty ignorant from a chemical
standpoint but I don't think the alumina hydrate was the problem. I was
warned that particles on an element (pieces from an unfortunate pot
explosion for example)can shorten the life of the elements considerably.
kim
At 08:27 AM 5/26/98 EDT, you wrote:
>----------------------------Original message----------------------------
>I wonder if any of you have had a problem with using alumina hydrate in kiln
>wash in an electric kiln. A friend of mine is convinced that the a-h she
>used in wax resist as well as kiln wash on the shelves destroyed the
>elements. When they needed to be replaced they came out in tiny pieces
>instead of in one long coil. It took hours of pulling out all the fragments
>with needle-nosed pliers. She says she remembers reading on Clayart a while
>back that alumina hydrate gave problems in an electric kiln. Can any of you
>enlighten me here?? I have just had my shelves sanded and am looking for a
>good dependable wash recipe. TIA!
>
>
>_____________________________
>Betty Burroughs
>Victoria, BC
>Canada
>
>
Laura Conley on sun 31 may 98
Instead of kiln wash one can use grog. Sprinkle it on each shelf as you are
loading (carefully to not get it on the pieces below, perhaps the 1st time do it
in a bisque load) and after the firing it is sufficiently stuck in place on the
shelf that it won't crumble off. You only need to add more is something
sticks. If a pot sticks, it comes off with grog on it. When you load each
time, simply brush off the underside of the shelf so no grog falls on the pots
below. I just got a new kiln and I will use this method. I have worked in
studios that used either method (wash or grog) and I prefer the grog.
Laura Conley
Boulder, CO
Betty Burroughs wrote:
> ----------------------------Original message----------------------------
> I wonder if any of you have had a problem with using alumina hydrate in kiln
> wash in an electric kiln. A friend of mine is convinced that the a-h she
> used in wax resist as well as kiln wash on the shelves destroyed the
> elements. When they needed to be replaced they came out in tiny pieces
> instead of in one long coil. It took hours of pulling out all the fragments
> with needle-nosed pliers. She says she remembers reading on Clayart a while
> back that alumina hydrate gave problems in an electric kiln. Can any of you
> enlighten me here?? I have just had my shelves sanded and am looking for a
> good dependable wash recipe. TIA!
>
> _____________________________
> Betty Burroughs
> Victoria, BC
> Canada
Stephen Mills on mon 1 jun 98
Even better is fine Molochite, some grogs have an iron content which can
be a problem a high temperatures.
Steve
Bath
UK
In message , Laura Conley writes
>----------------------------Original message----------------------------
>Instead of kiln wash one can use grog. Sprinkle it on each shelf as you are
>loading (carefully to not get it on the pieces below, perhaps the 1st time do i
>in a bisque load) and after the firing it is sufficiently stuck in place on the
>shelf that it won't crumble off. You only need to add more is something
>sticks. If a pot sticks, it comes off with grog on it. When you load each
>time, simply brush off the underside of the shelf so no grog falls on the pots
>below. I just got a new kiln and I will use this method. I have worked in
>studios that used either method (wash or grog) and I prefer the grog.
>
>Laura Conley
>Boulder, CO
>
>Betty Burroughs wrote:
>
>> ----------------------------Original message----------------------------
>> I wonder if any of you have had a problem with using alumina hydrate in kiln
>> wash in an electric kiln. A friend of mine is convinced that the a-h she
>> used in wax resist as well as kiln wash on the shelves destroyed the
>> elements. When they needed to be replaced they came out in tiny pieces
>> instead of in one long coil. It took hours of pulling out all the fragments
>> with needle-nosed pliers. She says she remembers reading on Clayart a while
>> back that alumina hydrate gave problems in an electric kiln. Can any of you
>> enlighten me here?? I have just had my shelves sanded and am looking for a
>> good dependable wash recipe. TIA!
>>
>> _____________________________
>> Betty Burroughs
>> Victoria, BC
>> Canada
>
--
Steve Mills
Bath
UK
home e-mail: stevemills@mudslinger.demon.co.uk
work e-mail: stevemills@bathpotters.demon.co.uk
own website: http://www.mudslinger.demon.co.uk
BPS website: http://www.bathpotters.demon.co.uk
Edouard Bastarache on wed 15 oct 08
Hello,
Alumina Hydrate is washed bauxite that needs to be calcined
before being put in a "pot", the name for furnaces used
to make aluminum metal. To make the metal it takes lots
of electricity and to make the process feasible, melters
are added to the mixture, just like glazes.
So, I checked with Alcan, one of the largest makers=20
of this metal and the melting point specified on their MSDS is :=20
2030 C.
I know the company, my father worled 40 years for them
at the Arvida works. I was born and raised 1 mile from the=20
works. For decades it was the world's largest aluminum smelter.
I also refused to work for them as their world wide medical=20
director in 1976. I had been recommended by 1 of my teachers
at Laval University... =20
Gis la revido
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
Canada
http://www.flickr.com/photos/30058682@N00/
http://pagesperso-orange.fr/smart2000/livres.htm
http://www.flickr.com/photos/potier/20321056/
http://myblogsmesblogs.blogspot.com/
Ivor and Olive Lewis on thu 16 oct 08
Dear Edouard Bastarache,
Have you ever thought of using Aluminium Smelter Slag as a glaze
ingredient.
Could it be useful as a source of insoluble Sodium oxide ?.
Best regards,
Ivor Lewis.
Redhill,
South Australia.
Edouard Bastarache on thu 16 oct 08
Hello Ivor,
I live to far from the smelter now, 250 miles.
Gis la revido
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
Canada
http://www.pshcanada.com/Toxicology.htm
http://www.flickr.com/photos/30058682@N00/
http://pagesperso-orange.fr/smart2000/livres.htm
http://www.flickr.com/photos/potier/20321056/
http://myblogsmesblogs.blogspot.com/
----- Original Message -----
From: "Ivor and Olive Lewis"
To:
Sent: Thursday, October 16, 2008 1:53 AM
Subject: Alumina Hydrate
> Dear Edouard Bastarache,
> Have you ever thought of using Aluminium Smelter Slag as a glaze
> ingredient.
> Could it be useful as a source of insoluble Sodium oxide ?.
> Best regards,
> Ivor Lewis.
> Redhill,
> South Australia.
>
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