TV's & silver

So far two people have told me the silver dust in the Tube of a TV is silver and or whats on the surface glass is silver .
Yes I have seen what they say & on the INTERNET a search I can't confirm what they say .
Does any one know if the silver dust is silver ?
I can't see how if could with out Red Flags going on all over the net.
Considering silver dust melts to silver and 1 to 2 grams of dust per TV could deliver a ounce of silver dust in a short time



If not silver what is that dust ?\
Lets say it is Silver . Then a shop vac with Hepa filter ONLY used for the purpose of said dust from Tubes would eventually
load up with product.

I can not say if it is or not but I would think not on household TVs. But say it is you would need lots of TVs to recoup the cost of just the filter. Silver on glass can be put on pretty thin.

Now on some High end CRT tube they do contain Ag, Pd, and Au as coatings but this would be on radar tubes or test equipment tubes. The tubes look like ceramic not glass most of the time and they will be more compact too. The Pd or Au coated ones will be worth the time but not the Ag.

Au:Ag is 63.8:1 today 2-11-2014

Eric

Wiki
White (in black-and-white): The mix of zinc cadmium sulfide and zinc sulfide silver, the ZnS:Ag+(Zn,Cd)S:Ag is the white P4 phosphor used in black and white television CRTs.
Red: Yttrium oxide-sulfide activated with europium is used as the red phosphor in color CRTs. The development of color TVs took a long time due to the long search for a red phosphor. The first red emitting rare earth phosphor, YVO4,Eu3, was introduced by Levine and Palilla as a primary color in television in 1964.[16] In single crystal form, it was used as an excellent polarizer and laser material.[17]
Yellow: When mixed with cadmium sulfide, the resulting zinc cadmium sulfide (Zn,Cd)S:Ag, provides strong yellow light.
Green: Combination of zinc sulfide with copper, the P31 phosphor or ZnS:Cu, provides green light peaking at 531 nm, with long glow.
Blue: Combination of zinc sulfide with few ppm of silver, the ZnS:Ag, when excited by electrons, provides strong blue glow with maximum at 450 nm, with short afterglow with 200 nanosecond duration. It is known as the P22B phosphor. This material, zinc sulfide silver, is still one of the most efficient phosphors in cathode ray tubes. It is used as a blue phosphor in color CRTs.

were talking ppm in an almost unmeasureable weight per tv.

Copper Head, I think your referring to the phosphor coating.

Originally Posted by Mechanic688

Copper Head, I think your referring to the phosphor coating.

(B) is AQUADAG COATING

not silver unless the coating is gold I would say don't waist your time on dust.

Eric

And to get into the insides of the TV to get to the powders then you must be breaking them open which is highly frowned upon by us and the different governments.

Hmmm apparently zinc sulfide can be used to make the screen for a FLIR camera although the process sounds very dangerous

Originally Posted by cptroses

Why? I crush the glass to fit into a wooden crate.

Not to mention illegal!

Originally Posted by Mechanic688

Not to mention illegal!

It is not illegal, immoral, or an any way wrong to break up CRT tubes. If you do break them up Clean up your mess. Also get the inavar screen in the tube too.

We also had a whole thread on this with the CRT ray guns.

The hazardous material designation comes from the lead in the glass. Thats like saying its illegal to break leaded glass brandy snifters(by the way don't use them for drinking out of). The lead can leach out of the glass. Some interesting facts on wikipedia about it.

Lead glass - Wikipedia, the free encyclopedia

Eric

OP the silver may be in the black and white screens but you will make more off the inavar screen than recovering the silver.

Originally Posted by Mechanic688

Not to mention illegal!

You still didn't answer my question. You said it was "frowned upon", now you're saying it's illegal. Why and what law makes it illegal in my state? My understanding is that lead doesn't come out of the glass without melting it.

This post has established there might be a minuscule amt of silver in the form of dust . But clearly there are other metals that are the dust in general .
Commonsense tells you , 20,000 TV's siting in one spot in a land fill will leach plenty of metals - Unacceptable - thats why landfills don't take them.
The lead glass is the least of the problem .
There is a learning curve for scrapper's particular to curb co types, that we often try any thing Once , some times once to many .

Regardless what you know is frowned upon - It is golden in the forum , thats all there is to it . We are here to learn not to instigate a attitude towards Environmental protection groups
LIKE ya it's illegal by you but by me I do this.
Once you see Some states make a reference to any action us scrappers could also have our hands in , We at best can discuss in hypothetical terms .

Look at a tiger in a cage .But don't poke it .