Gold recovery from computer parts without using hazardous chemicals

Discussion in 'Prospecting for Gold' started by Garlydog, Dec 17, 2010.

  1. Garlydog

    Garlydog Well-Known Member

    Joined:
    Dec 29, 2008
    Messages:
    1,474
    Likes Received:
    76
    Gender:
    Male
    Occupation:
    My lovely wife and I are business owners.
    Location:
    Joliet, IL
    Some of you know that I am into liberating scrap Gold from electronic equipment. One of the difficulties with the endeavor is the use of extremely hazardous chemicals.

    I have been experimenting with a technique that seems to remove gold from electroplated parts by using salt, water and time. Dump the trimmed electroplated gold parts into container with water and salt and wait. Agitate every week or so, and wait, and wait. Eventually the underlying metal rusts away from the gold. I filter and then dry the iron-oxide goop that is left over.

    What you are left with from this process it flour gold and iron oxide powder. Lots of iron oxide. I am thinking about smelting with Borax from this point forward, but if someone has an idea to remove more of the iron oxide first, I am open for suggestions.

    Of course, I am loonking for non-hazardous chemical suggestions. I know Mercury could be used to slurp the gold out of the iron-oxide powder, but...

    Of course, this is an academic exercise, not a get-rich-quick plan.
     
  2. homefire

    homefire Well-Known Member

    Joined:
    Apr 30, 2008
    Messages:
    12,194
    Likes Received:
    2,774
    Gender:
    Male
    Location:
    Deming New Mexico
    Your not just seeing Iron Oxides but Lead Oxides and Zinc.

    Have you tried Halide Leaching?

    Swiming Pool Bleach and Meratic acid works most well.

    Gotta follow the directions in this link.

    http://webpages.charter.net/kwilliams00/bcftp/bcftp.htm

    Safer then most leaching but you can still get hurt if you don't do it right.

    It will take off the Gold on Circuit boards, Fingers and stuff.
     
  3. Ric-san

    Ric-san Well-Known Member

    Joined:
    Mar 6, 2008
    Messages:
    9,397
    Likes Received:
    2,269
    Gender:
    Male
    Occupation:
    Aircraft Structural Mechanic @ USAF Hurlburt Field
    Location:
    Milton, FL (near Pensacola)
    Jim said..." It will take off the Gold on Circuit boards, Fingers and stuff" ...
    Makes me want to go out and try this tonight after drinking a few more Guinness beers...

    Live on the edge, right...??? (hehehe)
     
  4. bootybay

    bootybay Well-Known Member

    Joined:
    Nov 1, 2007
    Messages:
    12,157
    Likes Received:
    322
    Location:
    southern NJ
    I'd rather have my little log cabin, little stream, wood stove, loaded with many guns and very well trained german sherpards and sit there n pan myself into oblivion.. ahhh the good life.. :pcool:
     
  5. Garlydog

    Garlydog Well-Known Member

    Joined:
    Dec 29, 2008
    Messages:
    1,474
    Likes Received:
    76
    Gender:
    Male
    Occupation:
    My lovely wife and I are business owners.
    Location:
    Joliet, IL
    Thanks Homefire. I was hoping that you would point me in the right direction.
     
  6. Cruces Nomad

    Cruces Nomad Active Member

    Joined:
    Dec 17, 2010
    Messages:
    553
    Likes Received:
    223
    Gender:
    Male
    Occupation:
    Healing
    Location:
    Near Las Cruces, NM
    I have been advised to not smelt gold.

    Even the smelting of gold using Borax must release bad chemicals. I dont have the answer for non hazardous removal. But if I hear of anything I will surely post. My warning came in capital letters, and used words like death. I realize you may be familiar and able. Just passing this along. Be safe.
     
  7. Tomcat Uk

    Tomcat Uk Active Member

    Joined:
    Feb 12, 2010
    Messages:
    114
    Likes Received:
    23
    Gender:
    Male
    Occupation:
    2nd Hand Car dealer
    Location:
    Hampshire
    bootybay,
    Well said well said...
    I thought I was the only one who would enjoy the old life!
    One day maybe!
    TC
     
  8. 1NC1

    1NC1 Member

    Joined:
    Jan 23, 2008
    Messages:
    148
    Likes Received:
    1
    Occupation:
    printing professional(unemployed as of 12-23-08)
    Location:
    Moore County NC
    Old Computers

    There was a man here who removed gold from computers, he left town one night and left the landlord with a building(hotel size) FULL of computers to get rid of. He had packed that building full , they had to knock a hole on the side of the building to clean it out. Cost several hundred thousands of dollars for landlord. I guess the guy made a buck or two.
     
  9. homefire

    homefire Well-Known Member

    Joined:
    Apr 30, 2008
    Messages:
    12,194
    Likes Received:
    2,774
    Gender:
    Male
    Location:
    Deming New Mexico
    "It will take off the Gold on Circuit boards, Fingers and stuff. "

    LOL! I was talking about the Fingers or side contacts on circuit boards.

    Most are plated with 14K or better gold.

    Plating in the old days was better then .01" Now days your luck if they have been Flashed twice. Google Gold Flashing. High Voltage Gold Ionization Deposit.

    Things use to be built able to be Repaired.

    Now days there all Disposable.

    Remember the TV repair man?

    Don't see them any more do you.
     
  10. Ric-san

    Ric-san Well-Known Member

    Joined:
    Mar 6, 2008
    Messages:
    9,397
    Likes Received:
    2,269
    Gender:
    Male
    Occupation:
    Aircraft Structural Mechanic @ USAF Hurlburt Field
    Location:
    Milton, FL (near Pensacola)
    This thread is very interesting yet for me, too old...when I was still active duty in the Marines, the CH-53E windscreens coast around $10 each (there are three per plane) and once they went bad, we changed them and pitched toe old ones...they are gold plated to reduce the brightness of the sun kinda like window tinting...too bad I never figure out a way to 'recover' the gold in them...
     
  11. DigsNW

    DigsNW Well-Known Member

    Joined:
    Jul 20, 2008
    Messages:
    14,566
    Likes Received:
    7,057
    Gender:
    Male
    I know nothing about it but saw a program on TV that showed a place in California that recycles the gold, platinum, copper and what ever other stuff is in used electronics. I think they used some harsh chemicals but i was surprised how much of all that stuff they really got from junk. They were actually pouring gold and platinum bricks with the stuff they got but they had to wade through tons of stuff to get there.
     
  12. Tomcat Uk

    Tomcat Uk Active Member

    Joined:
    Feb 12, 2010
    Messages:
    114
    Likes Received:
    23
    Gender:
    Male
    Occupation:
    2nd Hand Car dealer
    Location:
    Hampshire
  13. DigsNW

    DigsNW Well-Known Member

    Joined:
    Jul 20, 2008
    Messages:
    14,566
    Likes Received:
    7,057
    Gender:
    Male
    Thanks for the video link Tomcat UK. That is how to precipitate heavy metals. Does this help Garlydog? I don't think you want to be playing with these chemicals though. We precipitate materials at work and I understand it but don't think I for one would be doing it at home.
     

Share This Page