We get gold from radio components

Experiments on the extraction of precious metals from circuit boards, microcircuits, transistors and other radio components are no longer new, and they are hotly discussed on the Internet. Many have thus discovered in themselves talented chemists, while others earn good money. Interest in this topic is fueled by the desire to get valuable metal from worthless items, many of which are deposited in the storerooms of workshops, office sumps, and even lying on trash. And this can be done not in specialized laboratories, but in ordinary home conditions. How is this possible? Let's take a look.
We get gold from radio components

Why gold

Certainly, many who heard about these experiments wondered why contacts cover or even make of such precious metal like gold. After all, the same silver is much cheaper, and it even surpasses the yellow metal in electrical conductivity. In fact, everything is not so difficult.Silver tends to oxidize over time, and for contact groups it is detrimental. Gold does not react with any element of the periodic table, and remains unchanged for a long time. Therefore, time is useless over contact groups that are covered with gold!

Process video

Required ingredients and reagents

  • Glass measuring glasses made of laboratory glass - 150 ml (1 pc.), 1000 ml (2 pcs.);
  • Radio components - transistors, microcircuits, connectors, sockets, switches, etc. .;
  • Water;
  • Stone or table salt;
  • Nitric acid;
  • Urea;
  • Iron vitriol
To speed up the re The action will be necessary electric tile.
We get gold from radio components
We extract gold from radio components

Getting to the chemical process of obtaining gold

The method that we will consider today is based on chemical etching or recovery of gold, and separation it from other metals. For carrying out similarchemical experiments it is necessary to provide ventilation, use protective clothing, goggles, a respirator and gloves. For chemical experiments we use a liter vessel of, and pour 100 ml of water into it. In it we put the whole set of processed radio parts.
We extract gold from radio components
Add 1.5-2 tablespoons of salt or salt (halite), and mix the resulting texture.
Extract gold from radio components
Then, in a glass container for 150 ml, we collect 100 ml of nitric acid. It is necessary to work with this reagent very carefully, protecting yourself with thick rubber gloves. We transfuse nitric acid into a liter vessel with radio components. The etching reaction with the release of oxide vapors occurs immediately, and almost completely dissolves all metals, with the exception of gold, turning some into oxides, others into nitrates. The result will be a saturated solution of dark green. If you want to top off the etching reaction, you can add another 100 ml of nitric acid.
We get gold from radio componentsWe get gold from radio components From a plastic watering can and cotton wool we make a funnel with a filter. We push the cotton wool into the drain hole, and pour the solution into it along with all the contents. We place the lacquer in a clean one-liter vessel.
Extracting gold from radio parts
We get gold from radio components The remaining radio components can be removed. The filtered solution is heated on the stove and proceed to the quenching of nitric acid. We will do this with urea, a simple and cheap ingredient that can be bought at any flower shop that sells fertilizers. Extracting gold from radio partsExtract gold from radio components Urea add one tablespoon, stirring constantly the solution in the container. In this case, nitrogen vapors must be released. The addition of urea powder must be done until the quenching reaction ends.
We get gold from radio components
We get gold from radio components
We extract gold from radio components
Next, we heat up the container with the solution to 80-85 degrees Celsius, because in a cold solution the process of quenching nitric acid with urea will not be completed. The final stage of our chemical experience will be the isolation of the obtained metal from a solution of hydrated nitric acid. To do this, a few tablespoons of ferrous sulfate (ferrous sulfate) fall asleep in 100 ml of water and mix thoroughly. The resulting reagent in small portions poured into a liter container with metal sediments.
We get gold from radio components
We get gold from radio components
Put the container with the solution on the electric stove, and heat it for ten minutes, stirring alternately. Pouring the acid solution into another container, small coagulated gold particles should remain on the very bottom.

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