hallo from jivo.j

[jivo.j]

hallo every one ,
i am new in forum .
work like goldsmith in london .
have interesed to hot separating and refining metals .

 

[Yggdrasil]

hallo every one ,
i am new in forum .
work like goldsmith in london .
have interesed to hot separating and refining metals .

Welcome to us.
What do you mean with hot separating?

 

[jivo.j]

example - cupelation .

 

[Yggdrasil]

example - cupelation .

Cupelation are mostly for reclaiming PMs from ore or very mixed dirty unknown mixes.
Not for jewelry scrap.
Then only smelting and hydro metallurgical processes including electrolysis will do.

 

[4metals]

Usually jewelers prefer to work with inquartation and parting to purify their gold. However I do know some smaller jewelers who use cupellation to remove all of the base metals and are left with a smaller quantity of gold alloy to inquart. In almost all of these cases that I know of first hand, they use cupellation because they have the kiln on hand and working in a hood.

Cupellation does volatilize about 10% of the lead used in the process.

 

[jivo.j]

thank you- 4metals - briliant answer .in this case we have aloy between PM and base metal . in the end have pure PM 100%

my big target is to separate dust ag, au,pt . (by special melting proces) 90 -95 % purity os ok for me .

have small target - to clean partly dirty PM. - 9ct. 14ct.18ct.
1.after melting with old glas powder,
2.melting "broken" gold aloy in potato .
3..