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-   -   Melting gold.......questions - (http://forums.pelicanparts.com/off-topic-discussions/393081-melting-gold-questions.html)

Craig 930 RS 02-15-2008 08:04 PM

Melting gold.......questions -
 
I want to melt 1/2 oz of gold leaf.....

Best method? Melting temp and way to melt w/o blowing it all over?
Suggestions welcomed !

slodave 02-15-2008 08:11 PM

It's probably not pure gold. Gold leaf, often is mixed with silver or copper, depending on the color.

Joeaksa 02-16-2008 01:08 AM

Why?

on2wheels52 02-16-2008 04:24 AM

I've sent bunches off to the melters but haven't tried it myself. Temp will need to be 1500-2000 F, depending on the alloy. An electric furnace would be best and some sort of ceramic crucible to hold the AU. A torch might be tough to control the temperature.
Jim

Aurel 02-16-2008 04:29 AM

Found that, if it may help...

http://www.wikihow.com/Melt-Gold

Aurel

MBAtarga 02-16-2008 06:18 AM

Wouldn't the gold leaf (assuming the sheets are usable as that product and not "scraps") be worth much more in that state than melted down?

Craig 930 RS 02-16-2008 07:25 PM

They are small pieces, light as a feather.

Is there a torch you'd recommend for heating a crucible?
Something to add to the gold so it won't stick, or ?

All ideas welcomed, thanks in advance!

pavulon 02-16-2008 07:46 PM

Don't put it in a brass freeze plug and heat it w/ a torch. Such was the fate of my father's H.S. class ring...by his own hand...reportedly turned into a chunk of "slag" that was pitched...brilliant

kycarguy 935 02-16-2008 08:26 PM

Quote:

Originally Posted by pavulon (Post 3773271)
Don't put it in a brass freeze plug and heat it w/ a torch. Such was the fate of my father's H.S. class ring...by his own hand...reportedly turned into a chunk of "slag" that was pitched...brilliant

Brass melts at 1652-1724 degrees and gold melts at 1946 degrees fahrenheit.

on2wheels52 02-17-2008 03:38 AM

Re the class ring melted with the brass, it would still have scrap value, the karet %age would be considerably lowered.
Reminded me of a customer who was going to fix his wife's broken gold bracelett with his arc welder. fffffffffffft, vaporized.
Jim

jensmusic 06-26-2011 03:46 AM

Question about melting gold
 
When you melt down gold and after it is melted doesn't it become pure gold? By melting the gold it burns up all the impurities in it, right? Like for instance, if you melt down different types of karats of gold into one melting pot then doesn't it all merge together burning out the all the impurities that each gold piece had making it one pure gold piece? I don't know, just asking so I do know. :confused:

on2wheels52 06-28-2011 02:34 PM

No, you just change the shape. I've sent a lot off to the smelters but haven't made a study of how it's done. There's some time and expense involved. That's why Kitco only pays $1365/oz for 24kt scrap when gold is $1500/oz.
Jim

G50-Love 06-28-2011 02:37 PM

ship it up here - I'll melt it for you

Zeke 06-28-2011 03:42 PM

Wad the leaf up into a ball and beat it with a hammer. I bet you end up with a BB size of gold.

lane912 06-28-2011 04:30 PM

Fire brick
Propane torch
Borax powdered soap-


Place the small pile of "gold" on the brick as condensed as possible. Shake some borax on top. It acts as a flux and will help keep the metal clean and together. Gently aply heat melting the flux then the metal. Be gentle with the torch-

wdfifteen 06-28-2011 04:34 PM

Quote:

Originally Posted by milt (Post 6106040)
Wad the leaf up into a ball and beat it with a hammer. I bet you end up with a BB size of gold.

I love it!
I don't mean to get all philosophical, but the answer to a lot of life's complicated problems is to beat that crap out of something with a hammer.

id10t 06-28-2011 05:19 PM

Ok - so what about things like the pins on older cpus? I've got a bunch of 'em, need a good way to remove pins from the die, etc. Snipping leaves too much on and sends too much flying.

Tervuren 06-28-2011 05:34 PM

Quote:

Originally Posted by jensmusic (Post 6100983)
When you melt down gold and after it is melted doesn't it become pure gold? By melting the gold it burns up all the impurities in it, right? Like for instance, if you melt down different types of karats of gold into one melting pot then doesn't it all merge together burning out the all the impurities that each gold piece had making it one pure gold piece? I don't know, just asking so I do know. :confused:

Most of the impurities do not just burn away - they are other metals and materials mixed in. Gold is very very heavy, so when melted, it stays at the bottom, and you can scrape away the top layer of other stuff. It takes multiple attempts to get gold to a high level of purity.

masraum 06-28-2011 05:37 PM

Quote:

Ok - so what about things like the pins on older cpus? I've got a bunch of 'em, need a good way to remove pins from the die, etc. Snipping leaves too much on and sends too much flying.
Aren't the pins coated or are they solid?

nota 06-28-2011 07:54 PM

micro thin plated
there might be a ounce in a ton of pins
only worth doing with china rate labor and no EPA
and tons of CPUs to deplate


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