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  1. #21
    huntersarrow started this thread.
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    just as a bit of a background, i've been employed at a commercial scrap yard for 5 yrs now and my parents are jewelers for 40+ yrs so have a bit of help,
    not gonna cocky it and see what happens lol. just wanna have a test run and see, doubt it will continue but worth at least one shot.
    big thanks to all who have replied, tryin to do it as safe and cautious as possible. will post results but wont be for a while yet as this is a back burner project, got bigger ones to knock out before the missus cracks it big time


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  3. #22
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    A small centrifuge I built long ago, my mistake was in ball milling the IC chips in that it ground the gold much to fine those chips should have been run through a stamp type mill to liberate the gold.

    Just the same you can see the gold in the recovered concentrates near the bottom of the plastic container. The seconed image wit the tan colored material is the precious metals, once the gold and platinum group were removed then the next heaviest material ( copper ) filled the groves in the bowl.

    When I started this project knew nothing about centrifuges or artificial centrifugal forces other than those experienced as a kid on the carnival rides.

    This centrifuge was experimental I have since redesigned it and made it larger.










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  5. #23
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    The material in the plastic container has not yer been dried it's a wet goop, had the container been placed on a source of vibration the heavier metals wold have formed layers from the bottom upwards.

    A small electric motor with a hose clamp affixed to the shaft would have provided enough vibration to separate the heavier precious metals.

    The platinum group would have settled out onto the bottom with gold forming the next layer then silver would be the next layer with trash on top of that

    Last edited by blackgold12; 11-07-2019 at 11:21 PM.

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  7. #24
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    It's out of context, so it's hard for me to comprehend what i'm looking at. I don't have any direct experience with refining. I do get the concept of the container being vibrated to settle the heavies. If you did something like that with a glass test tube ... you would be able to see the graduations from heavy to light going up the tube.

    I suppose you could say that there's quite a bit to the refining process. It's not something that you could just jump into and start making money hand over fist. It's probably years of work with a fair amount of time and money invested to actually get a small processing plant into operation. Like anything else ... there's a learning curve and you're bound to make learning mistakes along the way.

    Just an opinion, but i wonder if people get distracted by the flash. They say ohh wow .... there's an ounce of gold in every computer. Maybe it's a bit of gold fever ?

    I wonder if it would make more sense to look at the whole picture of what's there. Perhaps consider the value of the base metals like copper and possibly nickel. The solder would have value.

    Seems like a rational first step would be to separate all the metals from the plastics and fiberglass then ?

    Get that mastered first and then take it from there ?

  8. #25
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    Well the solder does have Silver & Tin in it....
    And the solders easly dissolved 8n HCL acid ( & that makes a smell like what my schools laboratorys smelt like, to add a aura of authenticity to it )
    So from there everything should just fall off the board.

    But, nah, just sell the boards & go buy a Gold bar with it. You can do that in a afternoon.
    The other advantage is that you have a known weight of 99.98% Gold. Its as good as Ca$h.
    Some dubious looking Goldish pellets need to be assayed @ your expense before people will buy it.

    The big smelters & PM refiners, they get 95% of everything out of it, Copper included.
    I doubt a first timer would get 50% of the Gold. Its a real steep learning curve frought with dangers.
    Take 8nto account costs, & it costs a lot to set up. Time, better utilised getting more escrap.
    Dangers, of the unknown. Better traded for the lesser and known & easly avoided dangers.

    I still get a laugh out of the guy who tried a test extraction in his garage & several days later noticed tiny pin prick spots of rust on his US$14,000 Saab.
    Which he traded in the next day for $11,000 knowing that in a few months its going to be worth a lot less..

    Also, refiner get all the different Previous Metals, not just the Gold, and their expenses are probably covered by the Copper & Solders metals recoverys, the rest is profit before taxes & extra expenses.

    I think you have to make a certain amount of posts before you can post pictures. Post again & try adding a photo.
    Last edited by eesakiwi; 11-08-2019 at 10:18 AM.

  9. #26
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    It takes a very large truck load of computers to recover an ounce of gold, it's the multi layers of embedded copper in the circuit boards that saves the buyers ass along with a bit of silver and a few other precious metals.

    A single ounce of gold can be drawn into a wire 60 miles long. Gold can be hammered into sheets so thin that a pile of them an inch high would contain more than 200,000 separate sheets.

  10. #27
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    On my new revised larger centrifuge with a 12 inch diameter bowel I'm using a lawn mower spindle from an old mower deck..



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  12. #28
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    Quote Originally Posted by APA View Post
    Yes: it’s best to leave the dangerous stuff to the experts.
    This poor chap had an expert working under him and look what happened to him the poor bugger died.

    Man who died 'during sex is still attached to prostitute?

    https://metro.co.uk/video/man-died-s...itute-1249673/

    https://videos.metro.co.uk/video/met...2209512021.mp4
    Last edited by blackgold12; 11-08-2019 at 06:18 PM.

  13. #29
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    The world I grew up in.



    Last edited by blackgold12; 11-08-2019 at 06:30 PM.

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