recovering

Anybody with experience or thorough testing of various precipitating agents that could help me determine best gold precipitation methods or agents? I have heard SMB is very good, but I've also heard about various other such as FeSO4, Na2S, Ascorbic acid, Zinc, SO2 gas, Activated Carbon. These...

hi guys, i was profilling the recovering palladium method and i found some problems. I have an alloy wich has gold, silver and palladium. i inquarted with copper to low the silver concentration down to 8% and laminate de ingot. Then i dissolved the alloy in AR and i filtered to separate the...