One guy here in TW got rich reclaiming all the metals from PCBs (gold and copper by the tonnes every year) but it takes entire factories to do it. Not something you can just ask the peasants to copy.
Many of those around. These people in Switzerland have done the same thing: "
" Basically a huge mill that grinds the waste to dust and then sifts and separates based on density. Incidentally I have been involved in the design of similar setup for reclaiming old car tires. To be honest I was not impressed by the efficiency of the method at all and I am even less impressed with the same thing applied to electronics. Too much energy consumption, too many moving parts hence too much wear and tear, needs huge investment, it almost certainly over-processes the material, and simply not applicable at the location where the waste is. It may work in Switzerland but not in rural India.
Something of much smaller scale is needed.
A hand operated shear like device can be made to shave off the components off the PCB. Then the components follow different routes and not everything needs to be ground down to dust. Now if there was a simple way to de-laminate the PCB and extract the traces without dissolving them in acid....