Problems in platinum recovery

[Yggdrasil]

Chlorox is Hypochlorite

More specifically Sodium Hypochlorite.
Anything else you want to inform us about?

 

[4metals]

You started out by saying this,

I precipitate PGM's and base metals out of Aqua Regia with an Alloy of Aluminum and Magnesium, then I selectively leach different base metals out

and followed that up by saying this,

In my experience, I find Palladium chloride and Silver chloride co-precipitate when you add Salt to the Aqua Regia

The 2 processes you have mentioned will produce different, if not questionable results. I am afraid that anyone trying to follow this thread will be thrown off without clarification.

In your second quote you mention dropping the Palladium with salt. then later on you said;

Now filter the Silver Chloride out of the Aqua Regia Solution, and wash this with clean water until the water becomes clear. Now Filter the water away. Leach the water-free Silver Chloride with Hydrochloric acid/ Chlorox , you will find that the leach will turn orange, meaning that Palladium is extracted from the Silver Chloride.

While I do not understand the mechanism for just table salt dropping the Palladium I will concur that Silver Chloride is notorious for dragging down other metals with it and possibly, in your case, Palladium is dragged down.
The rinsing and addition of hypochlorite (or bleach, choose your terminology) can possibly reduce any Palladium the Silver Chloride may have dragged down.

How are you sure there is not additional Palladium in the mother solution, given the salt precipitation is not a well documented process and it may have only caused some of the Palladium to drop as a salt?

I realize you type slow, I too type with 2 fingers (with the thumb helping on the space bar) but I guess I can do it faster than you. I am not trying to pull out any guarded secrets from you but you did mention some process steps that can be questionable and I do not want to cause any members reading this to take it as doctrine without it being discussed fully.

There are too many missing parts to this for me. Nothing about what the starting material is or other PM's recovered and for now, until you clarify, it is just too big a pill for me to swallow.