LYNAS - auf dem Weg zu einem Rohstoffproduzent von Hightech-Rohstoffen (Seite 4914)

[jrsh]

Antwort auf Beitrag Nr.: 40.132.780 von Fuenfvorzwoelf am 10.09.10 15:20:48

dann machs mal gut und gute Erholung!!!

Mal sehen wo LYC steht wenn du wieder da bist

[Fuenfvorzwoelf]

Antwort auf Beitrag Nr.: 40.132.742 von jrsh am 10.09.10 15:14:19

Ich brauch mal ne Auszeit.

Die Auseinandersetzungen, die hier teilweise anfallen, sind schlecht für meine Gesundheit.
Nächste Woche gehört nur mir. Ich melde mich dann wieder übernächste Woche.

Danke der Nachfrage.

[jrsh]

Antwort auf Beitrag Nr.: 40.132.695 von Fuenfvorzwoelf am 10.09.10 15:03:53

is was besonderes oder hast einfach mal die Nase voll vom posten?

[Fuenfvorzwoelf]

Hallo Leute,

ich klinke mich bis auf weiteres aus WO aus und wünsche Euch allen eine gute und friedliche Zeit!

Viele Grüße

Matze

[websin]

Antwort auf Beitrag Nr.: 40.132.634 von jrsh am 10.09.10 14:53:00

und hier die quelle:

http://www.miningweekly.com/article/lynas-boosts-rare-earth-…

[boehchris]

Antwort auf Beitrag Nr.: 40.131.763 von JoJo49 am 10.09.10 12:27:39

Wenn man sich diesen Beitrag durchliest, dann fragt man sich ob hier zwei Leute sprechen, oder nur einer. In dem Beitrag von Jojo wird die Gewinnung der der HREE aus den Eudialytischen Erzen als leicht" hervorgehoben - Wenn man den unten stehenden Beitrag liest, ist das nicht ganz so einfach.
Der Beitrag von Jojo ist Amerika lastig - der unten stehende Australien lastig.

lg

Sunday, May 02, 2010
MEDIA: Dr. Mariano Believes ALKANE Work Could Hold Key to Treating the World's Eudialyte Deposits.
HREE’s offer difficult metallurgy so we continue to cover storis on this topic with great interest. With regards to eudialyte, a zirconium silicate enriched with HREEs, we have touched on this before; so we were delighted to receive this article which appeared in an on-line mining news service that refers to a presentation given by Tony Mariano in Perth last week. In short, this piece presents Alkane as having solved the “eudialyte problem” several years ago…

Dubbo could hold key for eudialyte deposits
(Thursday, 22 April 2010 – MiningNewsNet by Tania Winter) -- A RENOWNED rare earths specialist believes work being undertaken by Alkane Resources on its Dubbo zirconia project in New South Wales could hold the key to treating the world’s eudialyte deposits and open up a new source for heavy lanthanides (rare earth elements).

In Perth recently at the special request of Artemis Resources, Dr Tony Mariano said the rare earths industry was paying close attention to the work being undertaken by Alkane at Dubbo.

“Alkane is getting their rare earths from a calcium zirconium silicate which is very much like eudialyte, but amenable to chemical processing,” he said.

The problem with eudialyte (a sodium calcium zirconium silicate) has always been in its treatment.

To date, no effective method has been developed to remove the heavy earths such as yttrium and zirconium from the silica, but once that is achieved, Dr Mariano said it would become the best source for heavy lanthanides on a world level.

“Once this achieved, it to me [eudialyte] is the mineral for heavy rare earths and for solving the South
China Clays problem,” he said.

Rare earth metals are vital to the production of many high-tech products – including hybrid vehicles, mobile phones, computers, television and even smart missiles.

Alkane technical director Ian Chalmers told Miningnews.net the company had already cracked the code when it came to successfully treating its Dubbo ore, and was now busy turning it into a commercial reality.

“We understand the chemistry and science and have produced metal in solution,” Chalmers said.
“Most people have difficulty understanding that our flowsheet and demonstration plant clearly shows that we are going from rock to finished high-quality end product.

“Because we have four metal streams at Dubbo – zirconium, niobium, light rare earths and a yttrium heavy rare earth – the actual cost of leaching the chemicals out of the rock is not that high and actually very efficient because we not putting deleterious material like silica back into solution.”

The company has spent the last 14 years on research and development of a flow sheet at Dubbo and spent close to $A12 million, $3.3 million via a federal government grant.

A feasibility study is due to be handed down at the end of the year, but the base case scenario has already pointed to $100 million per annum in revenue at costs of $50-60 million a year.

The flow sheet consists of sulfuric acid leach followed by solvent extraction recovery and refining to recover a suite of zirconium chemicals.

“They are not unrealistic operating costs and there is quite a substantial premium built into that,” Chalmers said. “Nobody else has achieved that anywhere and obviously, there are components of the flowsheet we really don’t say much about.

“We haven’t got a patent on it and are actually looking at patenting some of it, but the trouble is, and this is a real issue of patents, that once this is done it becomes public information.

“So, the easiest way to protect the proprietary information is to not say too much about it.”

The past 18 months has all been about marketing for Alkane, as it pushes home the message that it is an alternate supplier to China.

“We are now sending product from the demonstration plant at Lucas Heights around the world and talking to end users to ascertain demand and prices they are willing to pay, and we will feed that back into the FS,” Chalmers said.

“Some of the offtake people we have been talking to have an interest in investing in the project, so it is possible that when it comes to the crunch of building the plant (which has been estimated to cost
$50 million), we might have one or up to three partners get involved.

“We are talking to people about that possibility but nothing has been finalised.”

Dubbo has resources of 73.2 million tonnes grading 1.965 zirconium, 0.46% niobium, 0.14% yttrium and 0.75% rare earth oxides, or sufficient open pit material to sustain a 200 year mine life.

At the end of the day, Chalmers said the rare earths industry was a complex business.

“Some of the chemistry is amazing,” he said.

“For example, one of the heavy minerals ytterbium takes 1000 stages of solvent extraction separation before ytterbium metal can be produced, now that is simply huge.”

In looking at the rare earths industry in more detail, Dr Mariano said the major sources in history were from mineral bastnasites, a rare earth carbonate which is derived almost exclusively from carbonatites.

Other forms include monazite, which has been mined from beach sands as a by-product from other types of mining; xenotime, which is derived from the same source; loparite, a derivative of a calcium titanium silicate, ion-adsorbed rare earth elements and yttrium in clays like those found at South China Clays; and uraninite, which will host small quantities of substitutional heavy rare earths.

“That mineral (loparite) can contain a lot of rare earths substituting for the calcium and it can have niobium and tantalum substituting for the titanium,” Dr Mariano explained.

“The Russians mined this for many years as their major source of rare earths niobium and tantalum, but in the western world, including Australia, I don’t think we could afford to mine it, but I believe the
Russians are back mining it on a small scale.”

As for uraninite, once that is put into solution with sulfuric acid the fluids that result are called
rafinates and it is these that contain the heavy rare earths in solution which can be easily removed.

“This can occur anywhere where uraninite is mined such as the Athabasca Basin in Canada,” he said.
At one stage Australia provided 25-30% of the world’s rare earths from monazite it exported from mineral sands, and in the late 1970s a rare earth concentrate was also produced from the Mary
Kathleen mine in the Northern Territory.

The source of the rare earths at Mary Kathleen was the mineral allanite.

However, Dr Mariano said the key to a successful rare earths operation was the chemical cracking of the individual lanthanides (rare earth elements).

“Most people never address this issue,” he said.

“They tell you about the concentrates they can make, but they don’t tell you how much money it took them to make the concentrates.”

Another aspect of rare earths is supergene rare earth elements (REE) mineralisation, as found in the
Mt Weld deposit in Western Australia.

“These deposits came from the mantle and are igneous, composed mostly of major minerals calcite, dolomite and apatite, which have substituted in the structure very small amounts of REE,” Dr Mariano said.

“In some areas, under the right conditions, these deposits are exposed to lateritic weathering where the rare earths are released and put into solution and recrystallised to form primary rare earth minerals.

“This is what happened at Mt Weld, but the problem is it is extremely fine grained and hard to treat.”

[jrsh]

Antwort auf Beitrag Nr.: 40.132.590 von schlumpftrader am 10.09.10 14:45:47

aus der PR vom 06.09.:

The Mineral Resource estimate for the deposit with a higher distribution of Heavy Rare Earths has increased threefold to 7.62 million tonnes at a grade of 4.8% REO for a total of 366,000 tonnes REO, and has been renamed the Duncan Deposit

also eine
Riesenverbesserung an HREE

[schlumpftrader]

Antwort auf Beitrag Nr.: 40.132.338 von jrsh am 10.09.10 14:00:35

hallo jrsh,

vielen Dank für die info.
wenn ich richtig liege, so hat also Lynas vor allem die "light rare earths".
das würde jetzt auch das interesse von Lynas an Northern Uranium erklären. die haben ja die "heavy rare earths". interessant!

thx & bye
schlumpftrader

[zopa]

Antwort auf Beitrag Nr.: 40.132.106 von schlumpftrader am 10.09.10 13:23:38

aus Rare Metal Blog:
MolyCorp, LYNAS and Alkane Highlighted in 'Caution, rare earths ahead'
... “The potential shortages are all medium and heavy rare earths, a reflection of the fact that the major non-Chinese projects (Mt Weld and Mountain Pass) likely to be in production by 2015 will predominantly produce light rare earths, with some medium rare earths, but with neodymium contents that are likely to be less than demand,” he writes.

-- The Dubbo project, owned by Alkane Resources, could provide some relief as it has a relatively large proportion of medium and heavy rare earths, but output at this project would be low.


ALKANE - YTTRIUM-HEAVY RARE EARTH CIRCUIT ADDED TO THE DEMONSTRATION PILOT PLANT
http://www.allbusiness.com/mining-extraction/mining-extracti…

[jrsh]

Antwort auf Beitrag Nr.: 40.132.106 von schlumpftrader am 10.09.10 13:23:38

Seltenerdmetalle", auch Lanthanoide (Lanthanähnliche) genannt, ist eine Gruppenbezeichnung ähnlicher Elemente mit den Atomnummern 57 bis 71, zu denen das Lanthan und die 14 im Periodensystem folgenden Elemente Cer, Praseodym, Neodym, Promethium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium und Lutetium zählen. Obwohl die 15 "Seltenen Elemente" meistens zusammen auftreten, werden diese in zwei Gruppen unterteilt: die leichten und mittelschweren (Atomnummern 57 bis 64) und die schweren (Atomnummern 65 bis 71) Elemente. Zu den Lanthaniden werden auch noch die Atomnummern 21 (Scandium) sowie 39 (Yttrium) gezählt. Der Gehalt an "Seltenerdmetallen" wird ausgedrückt durch den Begriff "Rear-Earth-Oxide" (REO) oder "Total Rare Earth Oxide" (TREO).

Die Atomnummern findest du hier:

http://en.wikipedia.org/wiki/Rare_earth_element