Miked
The commercial process usually involve crushing down to about 0.5-1", ferrous and non-ferrous are seperated by magnets and eddy current and sent to a smelter.
The organics may be incinirated then smelted as is, or reduced in size even more and go trough flotation seperation (shaker table).
The horrible truth is, that recovring and refining metals by your self from e-scrap, will require you to run several hundreds Kilo's per day in an extremly efficient process to make it worth while.
There are sveral components though, that are richer then others and are easily seperated from boards. Those components can be sold outright or processed by yourself reletevly easy.
You can see in my website few examples of them under electronic scrap.
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