Table of Contents
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| Electric gold melting furnace | Portable Torch Cutting Welding | Vacuum filter kit with hand pump | Magnetic stirrer |
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| pH and Thermometer | Gas mask | Chemical Protective Clothing | Glove Chemical |
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| Boots | Chemical goggles | Digital Scale 0.001 g | Hot Plate |
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| Alcohol lamp | Chemical spoon | Glass Stir Sticks | Wash bottle distilled water |
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| Glass Baster | 1 Liter Filtering Flask | Stainless Steel Beaker 500 ml Stainless Steel Beaker 250 ml | Polypropylene Buchner funnel |
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| Filter paper, 9cm diameter | Glass Beakers 2000 ml | Gold crucible | Distilled Water |
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| Sodium cyanide NaCN or potassium cyanide KCN | Borax flux melting gold granular soldering Na2B4O710H2O | GOLD STRIPER SG-9 | Nitric acid HNO3 68% |
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| Hydrogen peroxide | Power supply | Stainless steel 304 plate cathode voltage | Stainless steel 304 plate Anode Voltage |
Hazardous Chemicals
There are four hazardous chemicals.
- Acid danger
- Heat danger
- Poison gas danger
- Cyanide danger
THIS IS FOR AN UNVERIFIED APPROXIMATE DEPICTION OF A RECYCLING PROCESS.
I HAVE NOT TESTED THIS MYSELF.DO NOT PERFORM AT HOME.
Chemical is very dangerous. You should protect in every step. You have to wear gloves, mask or protective clothing when you work. When extracting gold finish, you must clean thoroughly with water immediately and learn all kinds of chemicals that you used and how thoroughly protected.
Gold extraction can do several methods. In each method depends on material that you use for extraction. In case, We use electricity; it’s an easy method that you can do it alone. Silt gold extraction is suitable for plated gold such as CPU, Gold in solution, jewelry and so on.
Sample How to extract gold from the Gold Pin connector
The gold extraction from gold pin connector is melting gold pin connector solution form. It’s very is easy and efficient. We can use the process to apply in gold attraction from metal.
Separate gold pin out of the connector
Chemical Gold Solvent Extraction
Ratio chemical
- Sodium cyanide NaCN or Potassium cyanide KCN 30grams
- GOLD STRIPPER SG-9 30grams
- Distilled water 2 liter
Fill sodium cyanide NaCN or potassium cyanide KCN into distilled water
Stir cyanide and distilled water together and wait it for a minute
Fill gold stripper SG-9 and distilled water together
Stir gold stripper SG-9 and distilled water together
When you stir gold stripper SG-9 and distilled water together, wait it for 5 minutes
Fill gold pin into beaker chemical substance gold extraction that mixed
The gold in pin is melted by the chemical substance
If want gold can melt better use stirring rod stirs in water and pin
When gold in pin melts out. Prepare beaker size 2,000 ml for pouring water
Observe gold in pin is melt out or not? Loch at the color it become white, that means the gold melt out, from the writer’s experiment can show the chemical, liter can melt some gold most 25 grams, Gold melt depends on the flaws. If the material has more flaws, gold can less melt. This means, the chemical substance is saturated, it cannot melt more gold.
Pour gold pregnant solution from the pin out. You can use Distilled water cleanup pin again. But you must use the least Distilled water because we want the gold pregnant solution to be the richest.
Water that has gold melt will be dirty. You have to filter as shown below
Fill hydrogen peroxide H2O2 40ml per 2000 ml melted gold chemical water. stir it together and wait for 5 minutes. You have to fill hydrogen peroxide H2O2 in melted gold chemical water to destroy cyanide chemical structure. So, it is not fully element. It cannot melt gold. If we do not fill hydrogen peroxide H2O2 That makes the next step gold piece melted and change into solution.
How to gold extraction from solution use electricity
Equipment
- Power supply DC 0 – 40V >30 A
- Stainless steel 304 Plate cathode voltage
- Stainless steel 304 Plate Anode voltage. Long 25 cm. Diameter 1.5 cm
- Clamp
Fill stainless steel 304 Plate into beaker
Install Stainless steel 304 Plate clamp
Adjust level Plate. Adjust Plate Central beaker. Plate height of beaker 3 cm
Connected to the power supply
10 Volt power supply 1 hour or more
Gold solution adhering to the plate and gold fell in the beaker
Turn off the power supply
Gold adhering stainless steel plate. Scrape separate the gold
Gold plate out completely. Brought back plate step 15 to step 20 (Three Cycle) or more.
Slowly pour some water. Be careful precipitate gold will flow with water.
Pour them together
We fill distilled water to clean gold dregs
Wait for gold silts about 15-40 minutes
Slowly pour the water out be careful not to precipitated gold flows into the water
How to separate gold from metal
Ratio chemical
- Distilled water 40ml
- Nitric acid HNO3 68% 40ml
Fill distilled water into nitric acid. Water wait for 2 minutes for chemical substance mixed together
Fill Nitric acid into gold dregs. Wait 15-40 minutes
Slowly pour the Nitric acid out. Be careful not to precipitated gold flows into the water
We fill distilled water to clean gold dregs
Wait for gold silts about 15-40 minutes
Slowly pour the water out. Be careful not to precipitate gold flows into the water
Boil with alcohol stove or hot plate to dry. Be careful dregs splash if you use high temperatures
This is dry gold dreg
Slowly Pour the gold powder into a crucible. or AR to get more than 99 % pure gold.
The crucible should be a cone to protect some gold lumps spill while melt a lump
Melting gold powder agglomerates
Fill little borax for beautiful and shine. Then scoop gold out
Scoop gold out from crucible when it coagulated. Suddenly fill in distilled water. Because of if gold lost heat, gold will adhere with the crucible
If you use electric crucible or ceramic crucible, when gold was melt pour into the block
A high percentage of gold is round and glossy. This pure of gold is 98.2% If you want gold cleaner, you can boil with nitric acid about 10-20 minutes.
Chemical substance of gold extraction
and
1. Distilled water is used for gold extraction or the cleanest water that you can find.
2. The best acid-resistant equipment for gold extraction is glass.
THIS IS FOR AN UNVERIFIED APPROXIMATE DEPICTION OF A RECYCLING PROCESS.
I HAVE NOT TESTED THIS MYSELF.
DO NOT PERFORM AT HOME.