How to make gold from HDD hard disks drive old computer Original gold extraction

Start by finding old or broken computers and separating the hard disk from these old computers.
for personal computer you may get Most only one hard drive. But if it's a computer server or corporate computer super computer Mainframes have a large number of hard drives.
Separate the IC chips from the circuit board.
For extracting gold from drive hard disks today we are going to do IC chips using gold extraction method. traditional past Which is not often seen nowadays. Some steps. I still don't understand the principle and reason. Is it a gold smelting method?
Burn IC chips to ashes.To make it easier to gold smelting.
You may pound or grind it. Then mixed with borax at a ratio of 1 to 1.
This type of furnace uses old oil for heating. It's used engine oil.
All metals are fused together. We will get metal that is mixed with gold. to take to the next step
I see workers who specialize in the work. Use cement mixed with water to re-smelt the gold alloy. I'm still wondering what this procedure is for. Or just reduce the size of the metal to a smaller size. To make it easier for nitric acid to handle these metals. and left only gold
The metal will be melted. and was poured into the water to get a smaller size as needed
Use nitric acid mixed with water 1 to 2. Boil to get rid of these metals. and will only be left with gold as an interesting step
Please understand that this is a unsafe operation. and should not be followed as a work for experts and have long experience
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