Trouble Dropping Platinum

Gold Refining Forum

Help Support Gold Refining Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Joined
Apr 11, 2018
Messages
9
Good afternoon all,

For the past two weeks ive been attempting to leach PGMs from a chrystler town car cat. Ive successfully precipitated palladium but have had trouble dropping the platinum. Ive boiled the solution down to a syrup like consistency but every time i add the saturated ammonium chloride i get now reaction. Is there something im doing wrong?

Thanks!
 
Maybe the way you extracted the palladium from the converter is not good enough with the platinum (and rhodium)?
 
Have you tested your solution with stannous to be sure you have platinum in solution?

Please be very careful dealing with PGMs. Platinum, in particular, is very toxic and a powerful allergen. We have had a number of members who have developed platinosis. At least one has died.

Dave
 
Most likely the age of converter indicates that 2-5X more Pd was used than Pt.

Given that it's already a few thousand ppm Pd, that doesn't leave much in Pt.

Probably best to use zinc or ion exchange.
 
Back
Top