Stannous

[zwai]

Hello,


Is it possible that stannous show green / brown colour Palladium or is it copper reacting that way? I can't understand is it palladium or copper colour.
Solution is nitrate Cu/Ni and if stannous show correctly Pd

If somebody have overview of same situation please let me know.

 

[jeneje]

It is possible that you have Pd in the solution. The sure way is to do a test with DMG, if you get yellow salt dropped out then you have Pd. Hope this is of some help.

Ken

 

[zwai]

It is possible that you have Pd in the solution. The sure way is to do a test with DMG, if you get yellow salt dropped out then you have Pd. Hope this is of some help.

Ken

Thanks Ken,


Thing is that I have Nickel in same solution so I made a test with DMG and had green/yellow salt so my only option is cement. DMG dropped both Pd and Nickel.

I just made picture of 4 jars where cementing is in process. I just never deal with Pd and cant find any information about green/brown Pd stannous colour.


But thanks for reply Ken! I hope it is Pd on my copper plate.

 

[Anonymous]

What's the base material?

 

[zwai]

What's the base material?

Hi,

Base material is some 70's landline phone server connectors and Nokia NMT server. There is very small amount of gold so I hope more PGM is used.

 

[jeneje]

Make sure to use proper safety gear when dealing with PGM's. The salts are toxic to humans.

Ken

 

[Anonymous]

That Nokia kit did use a lot of PGMs. I would suggest your chances are high. Thanks for being so clear in your answer it helped a great deal.

 

[zwai]

Make sure to use proper safety gear when dealing with PGM's. The salts are toxic to humans.

Ken

Hopefully I can past PGM salt process and do only cementing as it seems that purifying PGM's is lot of work. I was confused is there any precious metals as almost all material show this green with stannous (nitrate solution). I will try to cement my first solution and melt powder. If there is no other precious metals then I definitely limit only with cementing.


Regards
Ain

 

[zwai]

That Nokia kit did use a lot of PGMs. I would suggest your chances are high. Thanks for being so clear in your answer it helped a great deal.

Thanks for answer!,

I hope there is some PGM's as here is almost no gold at all and palladium stannous test are very confusing as Pd recovery. At the moment I trying to recover Pd by cementing but I am afraid that there can be other metals included so cement will be mixed. Hopefully they used only Pd so cement will be quite pure.



Regards
Ain

 

[Anonymous]

Zwai

Ken raises a good point about PGM salts. You have a fair amount of kit there, and it's a lot safer to precipitiate your values as metals, melt them together and assay the bar then sell it "as is" rather than mess with the salts.

 

[nickvc]

Even the solutions are toxic so take care, wear proper gloves and work under a fume hood.
Add a bubbler to your solution wnphen cementing it speeds things up.

 

[zwai]

Is it good thing to cover jars with plastic while cementing? Thing is that I keep them abut 30C degree and it slowly evaporate. As well bubbler make evaporation faster but it seems that evaporating isn't good thing?



Regards
Ain

 

[jason_recliner]

In general, a good rule of thumb is to loosely cover any solutions that are reacting. This allows a little reflux (recycling) of precious reagents. Never seal tightly.

When evaporating, an entirely different process for a distinct purposes such as concentrating or denoxxing solutions, you should not cover as this prevents effective evaporation.

When cementing, a loose cover may help to keep insects out.

 

[zwai]

In general, a good rule of thumb is to loosely cover any solutions that are reacting. This allows a little reflux (recycling) of precious reagents. Never seal tightly.

When evaporating, an entirely different process for a distinct purposes such as concentrating or denoxxing solutions, you should not cover as this prevents effective evaporation.

When cementing, a loose cover may help to keep insects out.

Hi Jason,

Thank you for reply. I keep them close as I don't want that copper bars lose surfase area when level of solution falls



Regards
Ain