Laptops, phones, cameras, and the like are filled with gold plated circuit boards even printers and scanners have gold, silver, and copper, even platinum in them.
Gold is a precious, conductive, and pliable metal that retains a stable value better than many commodities. Its chemical properties make it useful for the manufacture of computers parts and electronics. Some people find it profitable to attempt to extract the gold from these scraps, then refine and sell it. This complicated process requires chemical expertise as well as access to various chemistry equipment. However, with the right knowledge, experience and tools, you can remove valuable gold from computer parts, other discarded electronics.
Things You Will Need:
Hydrogen Peroxide 3% I got from local pharmacy.
Muriatic acid 31% local hardware store.
Methyl Hydrate is 99.9% methyl alcohol it is used for fuel line antifreeze and can be purchased at your local hardware or automotive supply.
Funnel filter I used a drip coffee filter
2 large glass containers I like coffee pots for chemical heat.
Stir stick glass or plastic
Weigh scale mine is accurate to 1/10th of a grain.
Blow Torch hot enough to hard solder.
Clay bowls just about anything that has a melting point 500o above the melting point of gold will do.
Measuring cup anything you can use to make a 2:1 mix will do.
Although no special skills are needed one should follow all chemical and heat safety procedures.
Step 1: Extracting Gold from Scraps
This is the gold I collected in a bucket over three months.
Sort the gold into circuits that need cleaning, gold plated parts, gold plated pins, gold fingers, and solid gold large and small. Use a magnet to separate all gold plated steel this needs a different process than I am demonstrating.
Step 2: Stripping the Fingers and Clean Circuits
Put the gold fingers and clean circuit boards in the coffee pot, in another container mix two parts muriatic acid and one part hydrogen peroxide and add to the coffee pot until it just covers the gold fingers and wait a week giving it a stir daily. Since I have a week I will move on to processing my solid low grade gold parts.
Step 3: My Scale
Step 4: Cupellation
Cupellation is simple weigh the solid pieces of low grade gold, burn the crap out of it until you get no more slag and it becomes a nice bright yellow bead, and then you weigh it after it cools.
My solid low grade gold parts with garbage attached went from 180 grains to 75.9 grains of high grade gold with no garbage attached.
Step 5: Gold Flakes and Dust
Pouring the acid into a coffee filter the acid passes through the filter leaving the gold behind, save the acid do not dump it down the drain.
Next dump the remaining fingers and circuit boards into a deep plastic tray and add water, sort out the cleaned of gold parts, put the cleaned parts in the waist and save the un-cleaned parts for re-dipping.
After you have sorted the circuit board parts pour the water off through the coffee filter and flush with methyl hydrate to clean. Since the methyl hydrate is 99.9% methyl alcohol it cleans and dries the gold flakes better and faster than water, water will cling to the gold flakes and give you a false weight.
Step 6: Using Borax with your Salvaged Gold
I do not recommend the mercury method it works but it is extremely toxic for generations.
The Borax Method is a technique of artisanal gold mining, with its basis in the principle that borax reduces the melting point of all minerals, including precious metals like gold. The melting point of gold is 1063 ˚C, which is a higher temperature than can be obtained by cheap torches and burners. By adding borax to the heavy mineral concentrate, the melting point temperature decreases, allowing people to melt gold out of their concentrate and salvage. By using borax, no mercury flour is produced, and gold recovery increases.
Step 7: Melting Your Gold Flakes
Heat your clay bowl, don’t worry if the bowl cracks or splits, add borax to the hot bowl, when the borax melts add the gold flakes and more borax then heat until you get a nice bead of gold, let it cool and weigh to see how much you lost.