hi friends
does any ones knows the procedure of refining alloy gold ( with
copper, silver and little zinc as alloy) to pure 99.95 % gold. I
know the acid procedure using conc, nitric and sulphuric acids. BUt
the fumes are very dangerous thats why I am looking for an
alternative. Also shor international ( www.shorinternational.com )
are selling some simplicity gold refining machinery. They say its
safe and odourlesss. Does any one knows which type of salts they use
and what is their principle. Have any one used that machinery!
Thanks in advace
cheers
mithun