necromancer
Well-known member
i have chose to take Goran's advice
it can be found in my mlcc post. i think the link is above
it can be found in my mlcc post. i think the link is above
joubjonn said:Hey Necro,
Can you post your method when you finish? I would be interested since I have about a kg of MLCC's myself I would like to process. What's your plan with the Pd once you get it?
No, it's Noxx forum... and I have followed your posts with great interest. 8)necromancer said:nevermind, this "is" Goran's post
bgp_scrap said:I could be wrong here,
But doesn't hokes say to use ammonium chloride for pgm's?
I understand the cl would conflict with ag in solution.
But it would be alot easier then using zinc to cement
Hoke : Page 108 said:If your palladium is pure, and if your standard solution was prepared
as directed, nothing will happen. This experiment shows
that palladium differs from platinum in that it is not precipitated
with ammonium chloride from an aqua regia solution from which
excess nitric acid has been boiled off.
Warm the mixture gently, and add a single crystal of sodium
chlorate. Or, dissolve a pennyweight of chlorate in a little warm
water, and add a drop at a time. There will be considerable fizzing,
and as it subsides, add another small crystal or another drop. The
solution should be just short of boiling. After the addition of a little
more of the chlorate, a change in color will be noted. Stir the
mixture with a glass stirring rod; soon a dark red precipitate will be
seen, floating on the surface and then sinking. Continue to add
chlorate, a little at a time until the liquid is almost colorless, and
then let cool. This red powder is palladium ammonium chloride chemically
much like the orange powder above.
It will readily dissolve oxidized palladium.Rocky888 said:Can hot HCL dissolve some palladium ? I thought HCL could only dissolve palladium if it is finely divided.
I'm probably the wrong person to ask, although it would be my opinion that what you proposed wouldn't work well. If the palladium was sponge, with a lot of surface area, yeah, it might work, but solid pieces would experience only surface oxidation, so the process wouldn't really solve the issue.lunker said:Harold,
Could the mlcc s first be boiled in hcl to remove tin and lead. Then crushed and roasted to convert the palladium to a oxide? Then you could leach the pd out and go after the silver with nitric once you expelled the free hcl? Or would the palladium require to high a tempeture to oxidize?
Regards
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