Adsorption agent (gel) for noble metals

[Marcel]

Ever heard of this technique?
Seems that they are using noble metal absorbing gels, which sounds great reading through. But does this work selectively only on PMs? Is this good for collecting PMs from failed experiments or stockpots? And does this require the PMs to be in elemetary state, or will chlorides, nitrates also work?

https://www.google.de/patents/US8475749?hl=de&dq=silber+r%C3%BCckgewinnung&ei=4YloVdKbIIijsAGA7YDwBQ&cl=en

 

[goldsilverpro]

The PMs are scavenged from solutions.

The lowest price I found for the scavenging agent used in Example 1 in the patent was $175 for 10g. Pretty spendy, but the price might be similar to Smopex in bulk.

Smopex is a metals scavenger that we have discussed on the forum. According to the member, "Smopex", the price ranges from $60 - $200/kg and maximum loading is 200g Au/kg Smopex.

http://goldrefiningforum.com/phpBB3/search.php?keywords=smopex&terms=all&author=&sv=0&sc=1&sf=all&sk=t&sd=d&sr=posts&st=0&ch=300&t=0&submit=Search,

http://www.scavengingtechnologies.com/userfiles/files/ST-Smopex-User-Guide.pdf

Absolutely, the best forum thread for Smopex is this one.

http://goldrefiningforum.com/phpBB3/viewtopic.php?f=84&t=16948&start=0

 

[Lou]

Probably cheapest to use Purolite S920 plus.


Lou

 

[goldsilverpro]

Lou,

On the Smopex thread, if I read you right, you implied Zn or Al reduction of the entrapped metals before incineration. Can you elaborate on both the reduction and the incineration?

 

[Lou]

I've learned that if you don't reduce the chelated resin-bound metal to metallic form that the values may volatilize.

 

[Marcel]

Wow! I read through the postings and these substances and it´s properties sound very promising to me. Will try to learn more about the matter. Thanks for the input!