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Refining gold

Is there any easy way to take some 14kt gold and refine it to
22kt? Dave

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Is there any easy way to take some 14kt gold and refine it to
 22kt?  Dave

Add 24k.

Is there any easy way to take some 14kt gold and refine it to
22kt?  Dave

Sure.

Weigh the 14k, determine the weight of the components
(Au/Au/Cu), add the Ag and Cu weights together, work out what the
22k final wt would be for that amount of Ag/Cu, add 24k gold up
to that weight.

Melt and pour. What are you like at melting? I’ll assume you can
do that. Here’re my little quirky ways. I prefer to physically
clean the 14k (remove oxides, solder, etc) - not to pickle as it
can add sulphur to the melt. I’d also add a touch (less than 1%)
of copper-phos just prior to pouring to deoxidise what gets in
during the melt-up. Melt quickly, probably melt the 14k first
then add the 14k as the 24k has a higher liquidus. Pour into a
pre-heated steel and waxed mold - or into a diaper sling in a
bucket of water (Satsuo-Ando method).

Regards
Brian
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