How to make money on radio parts???

At the moment, many homes are unnecessary Soviet television, radio and the like. Here are some details of these things can be found (for chemical purification of precious metals such as silver, gold, platinum and others. I will write how to display these metals in pure water

Instruction

Difficulty level: Difficult

What you will need:

Hydrochloric acid HCl

Sulfuric acid H2SO4

Nitric acid HNO3

Compliance with safety regulations

Well-ventilated room

Glassware

step 1

Silver mining:

Silver stands out from the alloy components in the following way - is Taken hydrochloric acid in the ratio of nitric acid in the ratio 19/2 and necessary for the dissolution of the alloy. The silver has the property does not dissolve in acids except nitric, so we used some of the nitric acid. After connection of the alloy with acid, will be the reaction (the reaction rate will depend on the amount of silver and what metal is connected with silver). During the reaction will be allocated a lot of poisonous vapors, so is best done in a well ventilated room, and the temperature of the composition of the acids should be about 75 degrees Celsius (it would be better to go reaction). To recover the silver, you can use an equivalent amount of zinc shavings.

2 step

Gold and platinum:

You must do the “Royal vodka” to make it take Sulfuric acid, hydrochloric and nitric ratio 19/1/3 and bed items, but it is better to invest the same components, such as diodes diodes, transistors, transistors, etc. Gold and platinum will precipitate, but this gold will need to neutralize the caustic soda, then rinse under cold running water.

3 step

Precipitation of precious metals will be of the highest quality, I have a jeweler appraised the silver 920 in the sample, and gold turned higher 999.9 purity. Ultimately metals very easily melt into ingots when heated by a gas burner in a small Thile.

The price of gold 999.9 purity of about 300 rubles per one gram of the metal.

Good luck in chemistry!!!

step 4

Now about the profitability of your work:

I bought 8 spoilt TVs and one of them received (rounded) 3 grams of gold and 12 grams of silver. When sold, even though I had a gold 999.9 purity and silver 920 samples, I got 1648,72 ruble. The reagents I spent 150 rubles, I bought 90% nitric, hydrochloric and 96% sulfuric acid.

Now let's calculate the profit:

1648,72 - 150 = 1498,72 ruble. Profitability has increased almost 10 times!!!