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gas kiln high fire mortar recipe

updated thu 16 feb 06

 

Carol Hirsh, Cone 10 Studio in Austin on thu 9 feb 06


Hello Kiln Builders and repairers,
I am in search of a high fire mortar recipe to coat softbrick in my cone
10 car kiln. Anybody have one they can share with me? I have looked high
and low! Thanks
Carol Hirsh
http://cone10studio.com

Frank Colson on fri 10 feb 06


Carol- Your best bet is colloidal silica & molichite powder, mixed into a
heavy creamy consistency. Paint your IFB surfaces and let it fly!
Binds and won't shrink. Usage: 2500 degrees plus!

Frank Colson
www.R2D2u.com
----- Original Message -----
From: "Carol Hirsh, Cone 10 Studio in Austin"
To:
Sent: Thursday, February 09, 2006 1:25 PM
Subject: Gas kiln high fire mortar recipe


> Hello Kiln Builders and repairers,
> I am in search of a high fire mortar recipe to coat softbrick in my cone
> 10 car kiln. Anybody have one they can share with me? I have looked high
> and low! Thanks
> Carol Hirsh
> http://cone10studio.com
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
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> You may look at the archives for the list or change your subscription
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melpots@pclink.com.

Kurt Raynor on tue 14 feb 06


What is molichite. I cant find a reference to it.

Kurt

Vince Pitelka on tue 14 feb 06


> What is molichite. I cant find a reference to it.

Kurt -
It's spelled "molochite," and it's porcelain grog. I can't imagine why they
would specify molochite for a high-fire mortar. Any high-duty fireclay grog
or granular kyanite or cordierite will work fine, and will be a lot less
expensive than molochite.
- Vince

Vince Pitelka
Appalachian Center for Craft, Tennessee Technological University
Smithville TN 37166, 615/597-6801 x111
vpitelka@dtccom.net, wpitelka@tntech.edu
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/

Steve Slatin on tue 14 feb 06


Kurt --

I believe the reference is to Molochite -- see
http://ceramic-materials.com/cermat/material/1034.html
for more information.

AFAIK, there is no such thing as "molichite."

Go ahead, call me the spelling police. If you
misspell sufficiently, you lose intelligibility.

-- Steve Slatin

Kurt Raynor wrote:
What is molichite. I cant find a reference to it.

Kurt

Steve Slatin --

In watermelon sugar the deeds were done and done again
as my life is done in watermelon sugar.

---------------------------------
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Use Photomail to share photos without annoying attachments.

Lee Love on wed 15 feb 06


On Tue, 14 Feb 2006 14:13:29 -0800, Steve Slatin wrote:

>
> http://ceramic-materials.com/cermat/material/1034.html
> for more information.
>
> AFAIK, there is no such thing as "molichite."
>
> Go ahead, call me the spelling police. If you
> misspell sufficiently, you lose intelligibility.
>

Bt, yu culd undrstnd hm culdn't yu? Jst a vwl ws swppd. Fr th mst prt,
yu cn undrstnd if mst th vwls r drppd. ;^) Th mnd is a wnderfl thng!

--
Lee Love
in Mashiko, Japan http://mashiko.org
http://seisokuro.blogspot.com/ My Photo Logs
http://ikiru.blogspot.com/ Zen and Craft

"We are such stuff / As dreams are made on, and our little life / Is
rounded with a sleep."
--PROSPERO Tempest Shakespeare

Frank Colson on wed 15 feb 06


Kurt- Molichite is a refractory powder. You can also use silica powder,
often known on a potter's supply shelf as "flint".

I believe you can find molichite thru R&R -(Ransom and Randolph - 419 865
9777).

The difference is that molichite is a lot cheaper than silica powder.
I use it by 100 lbs plus , and is cheaper as such.

Frank Colson
www.R2D2u.com
----- Original Message -----
From: "Kurt Raynor"
To:
Sent: Tuesday, February 14, 2006 2:10 PM
Subject: Re: Gas kiln high fire mortar recipe


> What is molichite. I cant find a reference to it.
>
> Kurt
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.

Frank Colson on wed 15 feb 06


Sorry for the mis-spelling for "molichite". Still, kyanite or any kind of
grog, if used, needs to be at 300 mesh or finer to use as
a high temp refractory paste, for coating or gluing brick together. When
made with colloidal silica it performs just about the same as ITC at a
fraction of the cost.

Frank Colson
----- Original Message -----
From: "Vince Pitelka"
To:
Sent: Tuesday, February 14, 2006 4:39 PM
Subject: Re: Gas kiln high fire mortar recipe


> > What is molichite. I cant find a reference to it.
>
> Kurt -
> It's spelled "molochite," and it's porcelain grog. I can't imagine why
they
> would specify molochite for a high-fire mortar. Any high-duty fireclay
grog
> or granular kyanite or cordierite will work fine, and will be a lot less
> expensive than molochite.
> - Vince
>
> Vince Pitelka
> Appalachian Center for Craft, Tennessee Technological University
> Smithville TN 37166, 615/597-6801 x111
> vpitelka@dtccom.net, wpitelka@tntech.edu
> http://iweb.tntech.edu/wpitelka/
> http://www.tntech.edu/craftcenter/
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.

skiasonaranthropos@FSMAIL.NET on wed 15 feb 06


Hello Kurt, Vince & all,
Rather than being =93porcelain grog=94 Molochite is produced by extremely ha=
rd
firing a kaolin to promote maximum conversion to mullite and ensure no
quartz or cristobalite is present. Temperature and schedule are nearly 1600
oC (2900 oF) for 24 hours. This may be why it was specified against grog as
most is processed no where near this and so may contain quartz,
cristobalite and other minerals in addition to mullite. Some grogs also
show wide inconsistency

Regards,
Antony