H hkhogold Member Joined Jul 26, 2016 Messages 17 Sep 25, 2016 #1 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 ?
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 ?
H hkhogold Member Joined Jul 26, 2016 Messages 17 Sep 25, 2016 #2 Like this pic Attachments IMG_20160926_085843.jpg 1.2 MB
T Topher_osAUrus Well-known member Joined Feb 16, 2016 Messages 1,923 Location OK DoC Sep 25, 2016 #3 With it being from a pcb, I'd guess solder (not silver solder). Tin, lead, maybe some copper I chloride.
With it being from a pcb, I'd guess solder (not silver solder). Tin, lead, maybe some copper I chloride.
H hkhogold Member Joined Jul 26, 2016 Messages 17 Sep 26, 2016 #4 Will report in this few day , around leaching 75 kg of this thing Attachments IMG_20160926_155412.jpg 2.5 MB IMG_20160926_155403.jpg 1.6 MB
H hkhogold Member Joined Jul 26, 2016 Messages 17 Sep 28, 2016 #5 Just finish for little gold. Attachments IMG_20160927_200036.jpg 1.5 MB
H hkhogold Member Joined Jul 26, 2016 Messages 17 Sep 28, 2016 #7 Two day after will refining to pure gold .Still installing the equipment.
H hkhogold Member Joined Jul 26, 2016 Messages 17 Sep 28, 2016 #8 Two of this Attachments IMG_20160926_194943.jpg 1.8 MB IMG_20160926_210142.jpg 1.3 MB