Gold refining

[Eg.refiner]

I have slug contains ( gold ,copper , silver , iron , nickel )

( I want to seperate all base metals from it , can any one tell me what to do )
And what to start with

 

[Martijn]

Crush to a fine powder and pan the metals out. I assume you're going after the gold and silver, and not the base metal sulfides in the slag.
Or melt with a flux and a collector metal and then cupel or chemically refine. Depending on how much you have to process.

 

[Xing]

I have slug contains ( gold ,copper , silver , iron , nickel )

( I want to seperate all base metals from it , can any one tell me what to do )
And what to start with

how much the metal in the materials, dissovle by HCl and oxidizing agent, like H2O2, NaClO3, and so on, before have done a similar materials by solvent extraction with Cyanex 272 or DBC, the gold will be first separated, silver will stay in the residue.