Extracting platinum, rhodium, palladium together

[greatgems]

Most cats have all three with rhodium being the least some imports have just 2

 

[HAuCl4]

Is the substrate ceramic or metallic?.

 

[greatgems]

I only deal in ceriramic would love some beads

 

[HAuCl4]

I'd love to know how much metal you can recover from a sample of say 10-20 cats. :shock:

Careful with that boiling sulphuric!. :x

 

[skippy]

A problem with boiling in sulfuric is you'll consume a rather large volume of sulfuric acid. Not a huge deal if you are getting it in bulk though.
The other related problem is that you get quite some amount of aluminum and cerium (if present) sulfates, which can form annoying hydroxide precipitates while you are trying to cement your PGMs. You could probably get around this by cementing on copper, or doing something completely different like solvent extraction,
or electrowinning.

The aluminum sulfate also makes your neutralized solution into a big mess of gel, so there might be waste issues too.

 

[HAuCl4]

Well hopefully you can run the acid again in another batch till it is spent, then cementation looks good. 8)

 

[bubba]

Can we get back to the main question I get 2.5-3 percentage off market so close enough I have a commercial account as I have been in the diamond and gold business for years I just want to know one simple process to remove all 3 metals I know that an arc furnace is a good option but I would preffer a chemical process

People in hell would love to have ice water, too. It isn't likely to be, however.

Harold

Lol , thats funny Harold.
I get such a kick out of these folks, someone like this calls me on average about once a month.
You might as well be asking for a simple way to refine gasoline in your backyard.
Most people that contact me have had some gold/silver endeavors, and assume that the same parameters apply to the PGM's. I assure you, they do not.
I am sure you would prefer a chemical process, as I assume you don't want to spend the ten million dollars required to build a furnace, and find the very specific expertise required to operate it. Well brother, when you work out your process, and I wish you all the best in finding it and making it cost effective, please contact me and quote me terms on 25,000 lbs per month. www.westerncatalyst.com

 

[HAuCl4]

bubba: How much are you getting paid on a per pound basis, re. the cats?. Or how much are you asking?.

edit: just found and read the other thread. Disregard my questions.

 

[skippy]

Ok, I thought I would add a note to this thread: http://goldrefiningforum.com/phpBB3/viewtopic.php?f=72&t=12466

kjavenb123 has had a good experience with PMR refining, and I thought this thread needed this added to it as it contained a good deal of negativity towards PMR, which may be totally unwarranted.

I still wonder how much they are actually doing with the material beyond assay and milling, but one person is happy
and assay and milling are important jobs in themselves. One thousand pounds is a reasonable minimum.

 

[nmcs87]

I'm looking for a simple way to extract and presipitate platinum, palladium, rhodium all together from catalytic honey comb, no extracting seperate needed. I can melt to ingot and sell for full value so no refining needed just want the simplest highest yeild way to extract all three metals and drop them from solution to melt to bar form. I have read all the many step methods to extract pt seperate but that's not what I want. I would like a method to extract all at the sale same time Any help would be great

Hi I'd like to separate them completely, where did you find info about that, help please!

 

[nmcs87]

Seems you have a lot of reading to do. Without that basic understanding you will just wander in the dark, bumping into every problem out there.
Start with HOKE's book. See the book section there is a download, She will not deal with catalytic converters but will cover the basics you will need.
platinum and palladium will dissolve in Aqua regia, rhodium will usually need fusion in bisulfate, there are a couple of methods.

Hi, I'm new in the site, I can't find where to donwload Hoke's book, can you help me?

 

[Harold_V]

Hi, I'm new in the site, I can't find where to donwload Hoke's book, can you help me?

Look for the link in the sig line of many of the readers. One in particular is found in Palladium's posts. There are several others.

Here's a link that takes you to Palladium's home page. The link is found there, too.
http://goldrefiningforum.com/phpBB3/memberlist.php?mode=viewprofile&u=1666

Harold

 

[lazersteve]

The Guided Tour also contains a link to the Hoke book.

Amazing how many people don't take the tour.... :?:

Steve