Our turnkey system for printed circuit board (PCB) processing liberates precious metals and base metals from the plastics and fibers of consumer electronics and other components, avoiding the use of chemicals for leaching. Using a hammer mill, shaker table, and hydrocyclone, our turnkey system pulverizes the components, separates lighter waste from denser metals, and recirculates pieces back for additional pulverization and separation.
The primary components of the PCB processor are:
- Hammer mill – This machine breaks up the PCBs and components to about <1/8” pieces, and discharges them onto the shaker table.
- Shaker table – This separates materials based on density (specific gravity). The metals in PCBs are all higher density than the waste material, so behave differently on the table, allowing density separation of metals and plastic/fiber waste. The metals are transported across the table in grooves and removed from the table (ports #1, 2 and 3), while the waste material and not-fully-pulverized PCB pieces flow down the table to the waste-and-regrind discharge port #4 on the table. From here the wet slurry is pumped to the hydrocyclone.
- Hydrocyclone – The wet slurry is pumped into the bottom of the hydrocyclone in a tangential flow. The lightest waste material rises with the water flow and discharges out of a center stand pipe to the waste/settling pond.