This is my work-in-progress DIY dry air vacuum separation system specifically made for recovering gold and other metals from pulverized PCB components. The goal of this system is to be affordable, practical, and effective. Any vacuum or cyclone will get the job done.
System components list:
SCR Voltage Controller AC: amzn.to/4aekM6M
Oneida Air Systems Dust Separator: amzn.to/43tWLWP
POWERTEC 70176V Clear PVC Pipe 2-1/2" x 36" Long: amzn.to/43qI4nu
POWERTEC 2-1/2 Inch ID Y Fitting for 2-1/2 Inch: amzn.to/3II1pXU
POWERTEC 70336-P2 2-1/2" OD 90 Degree Elbow: amzn.to/48ZRszz
Vacmaster 2 1/2" to 1 1/4" Wet/ Dry Vac Accessory Adapter: amzn.to/3xedP76
2 1/2 Inch (2.5") OD Round Plastic Plug: amzn.to/3vmHs5Q
Those are affiliate links.