Marty Anderson on sat 23 jan 99
It is my understanding that Dark rutile is no long available. Is there =
anyone
that knows of a place this can still be obtained?
Thanks
marty
martya=40airmail.net
Jim V Brooks on fri 22 mar 02
I have recently read..not sure where... that the difference in regular and
dark rutile was...is... that the dark rutile has been calcined.. !!!!!!!!!
Is this true...? I have also read..in the past.. that dark rutile contained
a "little" more red iron oxide and trace amounts of a few other chemicals..
If this is true..then all i have to do is calcine rutile and i have dark
rutile? Or, is the second item correct and it needs some more red iron
oxide?. I hope one or more of our resident experts will be able to tell me,
which if either, is true..
Thanks..... Jim in Denton
Richard Aerni on sat 23 mar 02
Jim,
I recently reported to the list that Ruflux 61, or what is sometimes
referred to as dark rutile, is the uncalcined twin of Ceramic Grade Rutile.
(roo teel)
I received this information from the engineer at TAM Industries, in Niagara
Falls, NY, which is one of the major sources of rutile in this country.
They supply, among others (at least this is what I was told) Laguna Clay.
So if you buy Ruflux 61, you are getting uncalcined rutile. What
temperature the rutile is calcined to in order to get Ceramic Grade rutile,
I can't say.
Keep in mind there are numerous other sources of rutile that make their way
to ceramic suppliers. When I was doing my holy grail-like search for
another supply of rutile that would mimic the results I was getting from the
closed Sierra Leonian mines, I came across no fewer than 16 different kinds
of rutile, and I didn't hit every supplier around! So what you've got, I
can't say. I would advise you to get in contact with your supplier, and
follow up the chain to find out exactly what you've got. Just because it's
called "dark rutile" doesn't mean that it is the same animal that another
supplier may call "dark rutile."
As you will see if you check out the archives on rutile, it is an amazingly
variable mineral. For ceramic purposes, I have learned that any form of
FeTiO3 which contains between 85% and 96% of titanium is considered rutile.
Below 85% titanium (with correspondingly greater iron) and you get ilmenite.
There can be replacements of the titanium in the crystalline structure of
minor amounts of other elements, most commonly tin, niobium or tantalum. In
the niobian rutile, there are often intergrowths of columbite along with the
rutile...therefore, manganese can sometimes be present as well.
I think this wide variety of impurities is the prime reason why my line
blend tests of titania and iron failed (sadly) to reproduce the results I
was looking for to replace the effects of my deceased rutile.
I think it's interesting to note, as well, that when you order ceramic grade
rutile from TAM directly, it comes in a bag marked "Welding Rod Titanate."
I'm guessing potters come well after the welding and paint industry in their
usage of rutile.
There, is that more than you ever wanted to know, or what??
Best,
Richard Aerni
Bloomfield, NY
----- Original Message -----
From: "Jim V Brooks"
> I have recently read..not sure where... that the difference in regular and
> dark rutile was...is... that the dark rutile has been calcined.. !!!!!!!!!
> Is this true...? I have also read..in the past.. that dark rutile
contained
> a "little" more red iron oxide and trace amounts of a few other
chemicals..
>
> If this is true..then all i have to do is calcine rutile and i have dark
> rutile? Or, is the second item correct and it needs some more red iron
> oxide?. I hope one or more of our resident experts will be able to tell
me,
> which if either, is true..
>
> Thanks..... Jim in Denton
David Hendley on sun 24 mar 02
Hey Jim, just a note to add to Richard's:
If you buy your rutile from Trinity Ceramic supply in Dallas,
what you will indeed get is "Welding Rod Titanate." from TAM
Industries, in Niagara Falls, NY.
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com
----- Original Message -----
From: "Richard Aerni"
To:
Sent: Saturday, March 23, 2002 8:53 AM
Subject: Dark Rutile
> Jim,
> I recently reported to the list that Ruflux 61, or what is sometimes
> referred to as dark rutile, is the uncalcined twin of Ceramic Grade
Rutile.
> (roo teel)
> I received this information from the engineer at TAM Industries, in
Niagara
> Falls, NY, which is one of the major sources of rutile in this country.
> They supply, among others (at least this is what I was told) Laguna Clay.
>
> So if you buy Ruflux 61, you are getting uncalcined rutile. What
> temperature the rutile is calcined to in order to get Ceramic Grade
rutile,
> I can't say.
>
> Keep in mind there are numerous other sources of rutile that make their
way
> to ceramic suppliers. When I was doing my holy grail-like search for
> another supply of rutile that would mimic the results I was getting from
the
> closed Sierra Leonian mines, I came across no fewer than 16 different
kinds
> of rutile, and I didn't hit every supplier around! So what you've got, I
> can't say. I would advise you to get in contact with your supplier, and
> follow up the chain to find out exactly what you've got. Just because
it's
> called "dark rutile" doesn't mean that it is the same animal that another
> supplier may call "dark rutile."
>
> As you will see if you check out the archives on rutile, it is an
amazingly
> variable mineral. For ceramic purposes, I have learned that any form of
> FeTiO3 which contains between 85% and 96% of titanium is considered
rutile.
> Below 85% titanium (with correspondingly greater iron) and you get
ilmenite.
> There can be replacements of the titanium in the crystalline structure of
> minor amounts of other elements, most commonly tin, niobium or tantalum.
In
> the niobian rutile, there are often intergrowths of columbite along with
the
> rutile...therefore, manganese can sometimes be present as well.
>
> I think this wide variety of impurities is the prime reason why my line
> blend tests of titania and iron failed (sadly) to reproduce the results I
> was looking for to replace the effects of my deceased rutile.
>
> I think it's interesting to note, as well, that when you order ceramic
grade
> rutile from TAM directly, it comes in a bag marked "Welding Rod Titanate."
> I'm guessing potters come well after the welding and paint industry in
their
> usage of rutile.
>
> There, is that more than you ever wanted to know, or what??
>
> Best,
> Richard Aerni
> Bloomfield, NY
> ----- Original Message -----
> From: "Jim V Brooks"
>
> > I have recently read..not sure where... that the difference in regular
and
> > dark rutile was...is... that the dark rutile has been calcined..
!!!!!!!!!
> > Is this true...? I have also read..in the past.. that dark rutile
> contained
> > a "little" more red iron oxide and trace amounts of a few other
> chemicals..
> >
> > If this is true..then all i have to do is calcine rutile and i have
dark
> > rutile? Or, is the second item correct and it needs some more red
iron
> > oxide?. I hope one or more of our resident experts will be able to tell
> me,
> > which if either, is true..
> >
> > Thanks..... Jim in
Denton
Richard Aerni on tue 16 sep 03
more rutile stuff...perhaps if you've an interest in this you should save
these posts...
Jim,
I recently reported to the list that Ruflux 61, or what is sometimes
referred to as dark rutile, is the uncalcined twin of Ceramic Grade Rutile.
(roo teel)
I received this information from the engineer at TAM Industries, in Niagara
Falls, NY, which is one of the major sources of rutile in this country.
They supply, among others (at least this is what I was told) Laguna Clay.
So if you buy Ruflux 61, you are getting uncalcined rutile. What
temperature the rutile is calcined to in order to get Ceramic Grade rutile,
I can't say.
Keep in mind there are numerous other sources of rutile that make their way
to ceramic suppliers. When I was doing my holy grail-like search for
another supply of rutile that would mimic the results I was getting from the
closed Sierra Leonian mines, I came across no fewer than 16 different kinds
of rutile, and I didn't hit every supplier around! So what you've got, I
can't say. I would advise you to get in contact with your supplier, and
follow up the chain to find out exactly what you've got. Just because it's
called "dark rutile" doesn't mean that it is the same animal that another
supplier may call "dark rutile."
As you will see if you check out the archives on rutile, it is an amazingly
variable mineral. For ceramic purposes, I have learned that any form of
FeTiO3 which contains between 85% and 96% of titanium is considered rutile.
Below 85% titanium (with correspondingly greater iron) and you get ilmenite.
There can be replacements of the titanium in the crystalline structure of
minor amounts of other elements, most commonly tin, niobium or tantalum. In
the niobian rutile, there are often intergrowths of columbite along with the
rutile...therefore, manganese can sometimes be present as well.
I think this wide variety of impurities is the prime reason why my line
blend tests of titania and iron failed (sadly) to reproduce the results I
was looking for to replace the effects of my deceased rutile.
I think it's interesting to note, as well, that when you order ceramic grade
rutile from TAM directly, it comes in a bag marked "Welding Rod Titanate."
I'm guessing potters come well after the welding and paint industry in their
usage of rutile.
There, is that more than you ever wanted to know, or what??
Best,
Richard Aerni
Bloomfield, NY
----- Original Message -----
> I have recently read..not sure where... that the difference in regular and
> dark rutile was...is... that the dark rutile has been calcined.. !!!!!!!!!
> Is this true...? I have also read..in the past.. that dark rutile
contained
> a "little" more red iron oxide and trace amounts of a few other
chemicals..
>
> If this is true..then all i have to do is calcine rutile and i have dark
> rutile? Or, is the second item correct and it needs some more red iron
> oxide?. I hope one or more of our resident experts will be able to tell
me,
> which if either, is true..
>
>
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