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Thread: melting gold

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  1. #1
    us
    Mar 2010
    26

    melting gold

    hi all got some fine placer gold anyone know how to melt this down into small flake some one told me you could use a potatoe and a tourch

  2. #2
    us
    Gold Dredger 2nd Generation

    Dec 2010
    N. Cal - Born & Raised
    426
    64 times
    Prospecting

    Re: melting gold

    An acetylene torch will do it. Plenty of ventilation don't breath fumes to be safe. If I was to do it I would use a crucible slow and easy as not to blow the fines away.
    I forgot to mention to use some flux.

  3. #3
    us
    Jul 2010
    263
    54 times

    Re: melting gold

    Watch out with a torch. I blew a bunch of fine gold all over the place with a torch one time. Be sure to keep the flame under whatever you're heating it in. By the way I couldn't find most of my gold either. Live and learn. Anyway, I tell myself now that it wasn't worth as much then. Doug.

  4. #4
    ca
    Jan 2011
    5

    Re: melting gold

    I did this after breaking open one of those flaky leaf gold type displays that you get from the souvener shop using the crucible method and yup fine gold does blow away. And nope it wasn't as pure as they claimed, there was a high level of copper in the mix. If it doesn't say 100% gold then it isn't. I'm sure the potatoe method works too.

  5. #5
    us
    Mar 2010
    26

    Re: melting gold

    one more thing can you use the hand held propane tourch some said it works others say it dont get hot enough

  6. #6
    us
    Lode Prospector

    Dec 2007
    Roseburg, Oregon
    White's-GMT
    203
    1 times

    Re: melting gold

    I have melted fine Gold with a propane torch.

    I took a black charcoal barbecue bricket and made a hole in it with a pocket knife, the hole resembled the shape of a teaspoon in size and depth.

    Place this bricket in the middle of a large paper plate so, if any of your Gold does blow out from the torch the plate will capture most of it.

    I used 20 mule team Borax for the flux...
    I placed a little borax in the hole then placed the fine Gold on top of it and placed a little more borax on top of the Gold (not much, just a little to cover the Gold).

    Then light the torch and slowly work the flame into the mass from the sides,
    the borax will slowly melt and the Gold will form a ball or a button as it is called.
    Let it cool then dig it out and clean it.

    Needle
    Attached Images Attached Images  
    Tombstone will Read... If Silence is Golden, I've finally Struck the Motherlode!

  7. #7
    us
    Jun 2010
    Southern California
    24
    1 times

    Re: melting gold

    Needle, Slowly work the flames into the mass from the sides means what in dummie? Cause im going to try this out tomorrow and any other tips would help me out some.

  8. #8
    us
    Lode Prospector

    Dec 2007
    Roseburg, Oregon
    White's-GMT
    203
    1 times

    Re: melting gold


    Slowly work the flame into the mass...
    means the mass of borax and fine Gold in the depression of the bricket.
    Tombstone will Read... If Silence is Golden, I've finally Struck the Motherlode!

  9. #9
    us
    Jun 2010
    Southern California
    24
    1 times

    Re: melting gold

    cool man i think i gotcha now, i just assumed that was some sort of "special" technique. Thanks

  10. #10
    us
    Gold Dredger 2nd Generation

    Dec 2010
    N. Cal - Born & Raised
    426
    64 times
    Prospecting

    Re: melting gold

    Get some youtube video of it and post it, for others. I have seen lots of mining related video but none of melting small amounts of placer gold.

  11. #11
    us
    Jun 2010
    Southern California
    24
    1 times

    Re: melting gold

    Gravelhog, Great idea and i'm kicking myself in the a$$ right now for not doing that because that is what i had planned for the same reason you mensioned, but as usuall i got behind and didn't get around to doing it till tonight and kind of rushed things which doesn't make for a good video.

    Needle, well it turned out to be a decent idea considering i don't have the good material just sitting around and didn't cost me anything, but if i ever need to melt more gold i will definitley invest in better materials.

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  12. #12
    us
    Jan 2008
    Villa Rica georgia
    gold bug pro,garret,whites,tesoro,bounty-hunter,,.....
    1,830
    53 times
    All Types Of Treasure Hunting

    Re: melting gold

    you have to work it slowly ,very slowly to keep from blowing your fines all over the place. scrap ,flake ,and nuggets not so much - but fines are a little harder to melt without losing a lot.
    no matter where you go,there you are!

  13. #13
    us
    Mar 2010
    26

    Re: melting gold

    hey you got to try it befor i did but i see it works

  14. #14
    mx
    Oct 2011
    17
    All Types Of Treasure Hunting

    Re: melting gold

    Quote Originally Posted by GoldinSocal
    Gravelhog, Great idea and i'm kicking myself in the a$$ right now for not doing that because that is what i had planned for the same reason you mensioned, but as usuall i got behind and didn't get around to doing it till tonight and kind of rushed things which doesn't make for a good video.

    Needle, well it turned out to be a decent idea considering i don't have the good material just sitting around and didn't cost me anything, but if i ever need to melt more gold i will definitley invest in better materials.

    great work,

    those little balls of gold look neat!

  15. #15
    us
    May 2009
    111
    2 times

    Re: melting gold

    The video on youtube of the guy using the microwave kiln to melt gold showed him thoroughly mixing flux up with the gold bearing material before heating it. Would mixing borax up with it help while melting with a propane torch as well as putting borax on top of it ?

 

 
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