Lead telluride: a giant good for thermoelectricity.

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Gaston
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Registration: 04/10/10, 11:37
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by Gaston » 24/09/12, 15:50

dedeleco wrote:But a regular Stirling has a similar yield, and therefore, everything will depend on the price,
No maintenance, no vibrations and noise, and maybe much lighter ...

dedeleco wrote:with the pollution of tellurium, poison, as well as its anti-ecological extraction, worse than that of rare earths or lithium.
Tellurium is a byproduct of copper mines.
If we don't extract it, we reject it ...
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dedeleco
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by dedeleco » 24/09/12, 17:33

We always learn, even 2,5 times closer to nonagenarians than 20 year olds !!

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


With an abundance in the Earth's crust comparable to that of platinum, tellurium is one of the rarest stable solid elements in the Earth's crust. Its abundance is about 1 µg / kg. [10] In comparison, even the rarest of the lanthanides have crustal abundances of 500 µg / kg

The main source of tellurium is from anode sludges produced during the electrolytic refining of blister copper. It is a component of dust from blast furnace refining of lead. Treatment of 500 tons of copper ore typically yields one pound (0.45 kg) of tellurium.

Tellurium is used in cadmium telluride (CdTe) solar panels. National Renewable Energy Laboratory lab tests using this material achieved some of [b] the highest efficiencies for solar cell electric power generation
. Massive commercial production of CdTe solar panels by First Solar in recent years has significantly increased tellurium demand


Given the price of copper, if we really need it, with 1000 tonnes of copper for 1 kg of tellurium, instead of throwing away this little Te, its price will exceed that of platinum, a million times that of copper !!

Infinitely worse than rare earths !!
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moinsdewatt
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by moinsdewatt » 24/09/12, 19:37

dedeleco wrote:We always learn, even 2,5 times closer to nonagenarians than 20 year olds !!

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

...


and yet it is not expensive.

You could have continued in the same Wikipedia link:

The year-end price for tellurium in 2000 was US $ 14 per pound. In recent years, the tellurium price was driven up by increased demand and limited supply, reaching as high as US $ 100 per pound in 2006.
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dedeleco
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by dedeleco » 24/09/12, 20:21

moinsdewatt wrote:
dedeleco wrote:We always learn, even 2,5 times closer to nonagenarians than 20 year olds !!

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

...


and yet it is not expensive.

You could have continued in the same Wikipedia link:

The year-end price for tellurium in 2000 was US $ 14 per pound. In recent years, the tellurium price was driven up by increased demand and limited supply, reaching as high as US $ 100 per pound in 2006.


yes, as long as it's a waste, but
if we really need it

this Te waste, of 1Kg per 1000 tonnes of copper, which has become precious and untraceable, as much as platinum, will become more expensive than gold !!!

lessdewatt can speculate and make a fortune, by storing lots of tellurium at a low price, much better than gold bars, in his garage, instead of old clogs !!

There are so many cheap minerals that will become overpriced due to shortage and future depletion, in the near term, well before the end of oil and overheating of our planet.
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