Recovering silver and palladium from MLCC:s
- Thread starter g_axelsson
- Start date
Help Support Gold Refining Forum:
Smelt them.
kurtak
Well-known member
Lou is correct - smelting is the way to go :!:
Its discussed in detail here :arrow: http://goldrefiningforum.com/phpBB3/viewtopic.php?f=37&t=20710&hilit=cryolite#p212704
You need a good gas furnace & silicon carbide crucibles & a cone mold - do not try it in an electric furnace with graphite crucibles - the flux will destroy the elements in an electric furnace & graphite crucibles will not hold up to the flux ether.
It is next to impossible to wash/filter all the leach out of the ceramic using a wet/leach process even with a vacuum filter set up - the ceramic gets broken down into an ultra fine powder in the leaching process - so fine that it acts like the clay used to seal the bottoms of ponds - in short leaching makes a BIG mess
Also - I hope you are aware that not all MLCCs are made with Ag/Pd some (many/most) are made with Ni/Cu - use a magnet to remove those from the Ag/Pd ones
Kurt
Its discussed in detail here :arrow: http://goldrefiningforum.com/phpBB3/viewtopic.php?f=37&t=20710&hilit=cryolite#p212704
You need a good gas furnace & silicon carbide crucibles & a cone mold - do not try it in an electric furnace with graphite crucibles - the flux will destroy the elements in an electric furnace & graphite crucibles will not hold up to the flux ether.
It is next to impossible to wash/filter all the leach out of the ceramic using a wet/leach process even with a vacuum filter set up - the ceramic gets broken down into an ultra fine powder in the leaching process - so fine that it acts like the clay used to seal the bottoms of ponds - in short leaching makes a BIG mess
Also - I hope you are aware that not all MLCCs are made with Ag/Pd some (many/most) are made with Ni/Cu - use a magnet to remove those from the Ag/Pd ones
Kurt
Also - I hope you are aware that not all MLCCs are made with Ag/Pd some (many/most) are made with Ni/Cu - use a magnet to remove those from the Ag/Pd ones
Kurt[/quote]
The ones removed with a magnet still contain a little silver or Ag/Pd to the soldering pads( terminals of the capacitor).The inner layers are BME(base metals...Ni,Cu,etc).
So ,those ones can be processed with the chip resistors,which have the same Ag/Pg substrate at the soldering pads.
Reference can be found in the producers datasheet,company like VISHAY or DALE.
Kurt[/quote]
The ones removed with a magnet still contain a little silver or Ag/Pd to the soldering pads( terminals of the capacitor).The inner layers are BME(base metals...Ni,Cu,etc).
So ,those ones can be processed with the chip resistors,which have the same Ag/Pg substrate at the soldering pads.
Reference can be found in the producers datasheet,company like VISHAY or DALE.
