How much gold is in waste PCB boards?

Among all kinds of waste PCB boards, the gold content in cell phone mainboard is the highest. From the research, one ton cell phone contain about 300g gold, while one ton gold mine only contain 5g gold. That’s to say the gold content in waste PCB boards is about 40-60 times high than the gold ore. Except cell phones, the camera chip and connector, computer CPU and slot, memory chip and other important electronic components all contain gold, because the high Conductive transmission signal, anti-interference and anti-corrosion of gold property.

How much gold is in waste PCB boards :

As the high gold content in waste PCB boards, if we could make the good recovery for it, it would be an important part for the circular economy development. To recycle gold from the waste PCB boards, in order to avoid the secondary pollution to the environment, we recommend to use mechanical separation process to separate metals from nonmetals of waste PCB boards at first, then extract gold from the metal mixture.

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