Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
Recycling rare earth elements using ionic liquids
1 view
Skip to first unread message
and/or www.mantra.com/jai
Mar 17, 2013, 7:24:44 PM3/17/13
to
Recycling rare earth elements using ionic liquids
By Ian Farrell
Chemistry World
March 15, 2013
Recycling old magnets, so that rare-earth metals can be
re-used, could help to solve an urgent raw material
supply problem in the electronics industry. Researchers
from the University of Leuven, Belgium, have used ionic
liquids to separate neodymium and samarium from
transition metals like iron, manganese and cobalt � all
elements that are used in the construction of permanent
rare-earth magnets, which are found in electronic devices
ranging from hard drives to air conditioners and wind
turbines.
�The process involves the liquid-liquid extraction of
rare-earth metals from the other elements present in
neodymium-iron-boron and samarium-cobalt magnets,�
explains Koen Binnemans who leads the group developing
the process. �These other elements � including iron,
cobalt, manganese, copper and zinc � are extracted into
the ionic-liquid phase, while the rare-earth metals are
left behind in the aqueous phase,� he says, adding that
the ionic liquid itself � trihexyl(tetradecyl)phosphonium
chloride � can also be re-used, after the transition
metals have been stripped out.
Continues at:
http://www.rsc.org/chemistryworld/2013/03/recycling-rare-earth-neodymium-and-samarium-ionic-liquids
Jai Maharaj, Jyotishi
Om Shanti
http://groups.google.com/group/alt.fan.jai-maharaj
By Ian Farrell
Chemistry World
March 15, 2013
Recycling old magnets, so that rare-earth metals can be
re-used, could help to solve an urgent raw material
supply problem in the electronics industry. Researchers
from the University of Leuven, Belgium, have used ionic
liquids to separate neodymium and samarium from
transition metals like iron, manganese and cobalt � all
elements that are used in the construction of permanent
rare-earth magnets, which are found in electronic devices
ranging from hard drives to air conditioners and wind
turbines.
�The process involves the liquid-liquid extraction of
rare-earth metals from the other elements present in
neodymium-iron-boron and samarium-cobalt magnets,�
explains Koen Binnemans who leads the group developing
the process. �These other elements � including iron,
cobalt, manganese, copper and zinc � are extracted into
the ionic-liquid phase, while the rare-earth metals are
left behind in the aqueous phase,� he says, adding that
the ionic liquid itself � trihexyl(tetradecyl)phosphonium
chloride � can also be re-used, after the transition
metals have been stripped out.
Continues at:
http://www.rsc.org/chemistryworld/2013/03/recycling-rare-earth-neodymium-and-samarium-ionic-liquids
Jai Maharaj, Jyotishi
Om Shanti
http://groups.google.com/group/alt.fan.jai-maharaj
Salmon Egg
Mar 17, 2013, 9:03:05 PM3/17/13
to
In article <20130317Du3QaNo77e@JoTG>,
Please explain to me how this is not span. Wouldn't a competent chemist
be able to figure out such a process or a competitive process to do just
that. Why should such items clutter up this newsgroup?
If the process was one that easily allowed separating various rare earth
metals easily, rather than from transition metals, that would be worthy
of note. As they say, a dog biting a man is not news.
Are you some kind of a shill?
--
Sam
Conservatives are against Darwinism but for natural selection.
Liberals are for Darwinism but totally against any selection.
use...@mantra.com and/or www.mantra.com/jai (Dr. Jai Maharaj) wrote:
> Recycling old magnets, so that rare-earth metals can be
> re-used, could help to solve an urgent raw material
> supply problem in the electronics industry. Researchers
> from the University of Leuven, Belgium, have used ionic
> liquids to separate neodymium and samarium from
> transition metals like iron, manganese and cobalt � all
> elements that are used in the construction of permanent
> rare-earth magnets, which are found in electronic devices
> ranging from hard drives to air conditioners and wind
> turbines.
<snip>
> Recycling old magnets, so that rare-earth metals can be
> re-used, could help to solve an urgent raw material
> supply problem in the electronics industry. Researchers
> from the University of Leuven, Belgium, have used ionic
> liquids to separate neodymium and samarium from
> transition metals like iron, manganese and cobalt � all
> elements that are used in the construction of permanent
> rare-earth magnets, which are found in electronic devices
> ranging from hard drives to air conditioners and wind
> turbines.
Please explain to me how this is not span. Wouldn't a competent chemist
be able to figure out such a process or a competitive process to do just
that. Why should such items clutter up this newsgroup?
If the process was one that easily allowed separating various rare earth
metals easily, rather than from transition metals, that would be worthy
of note. As they say, a dog biting a man is not news.
Are you some kind of a shill?
--
Sam
Conservatives are against Darwinism but for natural selection.
Liberals are for Darwinism but totally against any selection.
gordo
Mar 17, 2013, 9:03:14 PM3/17/13
to
On Sun, 17 Mar 2013 23:24:44 GMT, use...@mantra.com and/or
A very interesting site. The most powerful small magnet I have is from
the stomach of a cow.It is probable that the 20% is a low figure.
the stomach of a cow.It is probable that the 20% is a low figure.
Message has been deleted
ji...@specsol.spam.sux.com
Mar 20, 2013, 6:50:38 PM3/20/13
to
In sci.physics Bob <bbx...@excite.com> wrote:
>
> A user posts a story from the Royal Society of Chemistry, highlighting
> a new article in a prestigous chem journal. Spam? That is odd.
You mean other than a chemistry post was cross posted to a physics group,
an enviromental group, and two rather silly Indian groups?
--
Jim Pennino
> On Sun, 17 Mar 2013 18:03:05 -0700, Salmon Egg
> <Salm...@sbcglobal.net> wrote:
<snip>
>>Please explain to me how this is not span.
>
> huh?
> <Salm...@sbcglobal.net> wrote:
<snip>
>>Please explain to me how this is not span.
>
>
> A user posts a story from the Royal Society of Chemistry, highlighting
> a new article in a prestigous chem journal. Spam? That is odd.
You mean other than a chemistry post was cross posted to a physics group,
an enviromental group, and two rather silly Indian groups?
--
Jim Pennino
Salmon Egg
Mar 20, 2013, 7:03:04 PM3/20/13
to
In article <8tbkk89f440qb2fip...@4ax.com>,
> developments. And it was brief, with proper links for follow-up.
Maybe I missed the point. How was the story essentially different from a
story: Instead of using up more land for the disposal of newspaper, we
can develop a process for using old newspaper so we are not dependent on
finding scarce trees for making new paper.
Just because professors in prestigious universities need to publish even
if they have nothing new to say does not mean that everything coming out
of such institutions is of high quality.
Bob <bbx...@excite.com> wrote:
> A user posts a story from the Royal Society of Chemistry, highlighting
> a new article in a prestigous chem journal. Spam? That is odd.
>
> I think this is a good kind of post, highlighting new scientific
> A user posts a story from the Royal Society of Chemistry, highlighting
> a new article in a prestigous chem journal. Spam? That is odd.
>
> developments. And it was brief, with proper links for follow-up.
Maybe I missed the point. How was the story essentially different from a
story: Instead of using up more land for the disposal of newspaper, we
can develop a process for using old newspaper so we are not dependent on
finding scarce trees for making new paper.
Just because professors in prestigious universities need to publish even
if they have nothing new to say does not mean that everything coming out
of such institutions is of high quality.
and/or www.mantra.com/jai
Mar 20, 2013, 7:07:45 PM3/20/13
to
Dr. Jai Maharaj posted:
Forwarded post:
Raw ores being recycled with industrial magnetic is as
great as adding metallic gold to gold powdered drops( by
ppt ) to produce 22 k to 24 k gold.... Ingots.... I am
presently doing this with catalytic converters as far as
the precious metals and doing intensive research on
magnetic removed from hard drives...Go to electronics
scrap for a source... J. Goldsmith
Physical/Analytical/Geo Chemist Hazmat #7052
- Jackie L Goldsmith
End of forwarded post.
Raw ores being recycled with industrial magnetic is as
great as adding metallic gold to gold powdered drops( by
ppt ) to produce 22 k to 24 k gold.... Ingots.... I am
presently doing this with catalytic converters as far as
the precious metals and doing intensive research on
magnetic removed from hard drives...Go to electronics
scrap for a source... J. Goldsmith
Physical/Analytical/Geo Chemist Hazmat #7052
- Jackie L Goldsmith
End of forwarded post.
Martin Brown
Mar 21, 2013, 3:59:57 AM3/21/13
to
On 20/03/2013 23:03, Salmon Egg wrote:
> In article <8tbkk89f440qb2fip...@4ax.com>,
> Bob <bbx...@excite.com> wrote:
>
>> A user posts a story from the Royal Society of Chemistry, highlighting
>> a new article in a prestigous chem journal. Spam? That is odd.
>>
>> I think this is a good kind of post, highlighting new scientific
>> developments. And it was brief, with proper links for follow-up.
>
> Maybe I missed the point. How was the story essentially different from a
> story: Instead of using up more land for the disposal of newspaper, we
> can develop a process for using old newspaper so we are not dependent on
> finding scarce trees for making new paper.
That was also news once when the idea was first floated and is related
> In article <8tbkk89f440qb2fip...@4ax.com>,
> Bob <bbx...@excite.com> wrote:
>
>> A user posts a story from the Royal Society of Chemistry, highlighting
>> a new article in a prestigous chem journal. Spam? That is odd.
>>
>> I think this is a good kind of post, highlighting new scientific
>> developments. And it was brief, with proper links for follow-up.
>
> Maybe I missed the point. How was the story essentially different from a
> story: Instead of using up more land for the disposal of newspaper, we
> can develop a process for using old newspaper so we are not dependent on
> finding scarce trees for making new paper.
to chemistry too. It strikes me that provided that you only want to make
new magnets from old it makes a lot more sense to recycle by crushing
them melting and adding new to get the required composition.
Recycling glass would be a closer analogy and you do not go about that
task by first refining silicon back out of scrap glass!
The way to recycle old Nd magnets is pretty much how recycled glass is
done today but for ceramic and pseudo ceramic magnets.
>
> Just because professors in prestigious universities need to publish even
> if they have nothing new to say does not mean that everything coming out
> of such institutions is of high quality.
>
What they have done might well be clever chemistry, but it doesn't sound
> Just because professors in prestigious universities need to publish even
> if they have nothing new to say does not mean that everything coming out
> of such institutions is of high quality.
>
like it will scale up to an economic industrial process.
--
Regards,
Martin Brown
0 new messages