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Printed Circuit Boards

Posted by Preston Harris on December 10, 2012 at 9:28am in Questions and other things

I have some old circuit boards and would like to try to get the gold out of them. My first question is can anyone show me (pictures) or explain in detail exactly where to find the gold on the circuit boards?Secondly, I don't really want to get into the whole chemical thing, what are some of the easiest ways to get the gold out without risking smothering from poisonous fumes? Any help/suggestions will be appreciated!!

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Replies

  • Corey Giles January 10, 2018 at 12:24pm
    Buy some paydirt instead of wasting your money on chemicals. It’s not worth the time or money. Just try and sell the boards on eBay
    • Preston Harris > Corey Giles January 10, 2018 at 6:06pm

      Thank you for the information, Corey!

  • Brad Arkle September 3, 2017 at 7:51am

    My info says it takes about a train car load to get an ounce.  The only, and I do mean ONLY acid that will dissolve gold is called aqua regia and is a mixture of hydrochloric and nitric acid...damn nasty stuff and it's so unstable that you can't store or buy it...you have to make it.  This stuff will dissolve EVERYTHING, then you have to have more chemicals...too expensive and dangerous .  It's all poisonous fumes, whether you melt or dissolve it.

  • Spur December 10, 2012 at 11:29am

    This Site has a Forsale blob and Reclyling PC Au./Ag is what they Do. http://goldrefiningforum.com/ 

    • Preston Harris > Spur December 10, 2012 at 11:54am

      Thanks again, Dennis!! I have registered and will start doing my research after while. Got some other things to take care of today before going back to work tomorrow. I really appreciate the link and the info!!

      • Spur > Preston Harris December 10, 2012 at 12:32pm

        You Can Apply the Knaledge to Bigger Things with Less Bio Mess Like Heap Leaching or even running a Cement mixxer With a Lead or RinoLiner to Process Ore. http://www.theweekendprospector.com/ You just Need a Way to Powder Them Rocks, I've got More if your Itersted.

  • CrazyCrusher December 10, 2012 at 10:32am

    I don't think you can get away from the chemical processes when dealing with recycling PCB's or the ceramic CPU chips for that matter.  Some people use an impact mill and basically pulverize everything, then float out the plastics, remove the  ferrous metals with a magnet, and then whats left if a lot of solder, a bit of silver, copper, gold, etc.  and that is when the chemicals comes in.    Some have burned the boards, but that is just a mess and a blob of plastic which probably uses more propane than the values would pay for.     If you don't want to mess with the small amounts, put them up on Ebay for sale or something.    There is a product out there (somewhere) that is supposed to strip the boards, but I think it would be a strong acidic etching chemical or something.

    • Spur > CrazyCrusher December 10, 2012 at 11:17am

      You Nailed it !! Put them on Ebay the only way to make money that way is buy Bolk becouse of the Waist, Lets not for get that Float Water is now Waist Water that Needs Treatment, so use as little as Posible with Recycling in mind. You could Crush it Dry and put it on a dry Shaker Table with a HepaFilter Vack  ??

      • Preston Harris > Spur December 10, 2012 at 11:26am

        Thanks, Dennis! Sounds like Ebay is about the only way to go...unless I can find a recycling company around here that will pay me for them.

    • Preston Harris > CrazyCrusher December 10, 2012 at 10:50am

      Thank you for the info! I will see what I can come up with.

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