40% FeCl3 and 8% of HCL off the gold on PCB

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hkhogold

Member
Joined
Jul 26, 2016
Messages
17
I am using FeCl3 40% and 8 % ofHCl to leaching the PCB
Within 15 % lots of basic metal dissolve into the solution
When I filt solution . I see some of gold foil and some grey dust on the filter. Is that AgCl ?
 
Will report in this few day , around leaching 75 kg of this thing
 

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