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It seems like you could superheat alloy in a closed container, put some vacuum to it and draw out the unwanted stuff. Running the vacuumed vapor through a condenser would trap the metals and...

And Thank You, for the comments!
I've played with this concept, and honestly, I don't really think it has a lot of usefulness to us 'boolit casters' but this site has so much good information that...

One of things I found interesting with the few seconds of video dealing with the caustic was that the lead mass seemed to be heavily agitated. I expect that whatever reaction that goes on is only...

Yes, that kind of exactly the rabbit hole I'm going down.
Or maybe I'm just tired of the scamdemic and need a distraction.

Either way, it's interesting...

It seems like there's two different processes. The first is removing binary alloys from a lead base and the second, at much higher temp is trying to remove lead and other impurities from a copper...

I haven't totally wrapped my head around it yet, but it seems that the whole thing revolves around the 'vapor pressure' rather than the actual boiling point.
By applying a vacuum, a certain metal's...

The sky is falling! the sky is falling!

I use NaOH all the time. Its not nearly as bad some internet quarterbacks make it out to be.
It's part of an industrial process. Let's SHARE...

I think this is more about the idea and 'can we do it' rather that the economics of it.
Like you, I have more than enough 'stockpiled'

I see this as more about the academia rather than...

Long boring winter, time to investigate some ideas.

It's seems that there are 3 major ways to purify (or refine) lead and related metals.
1) Electrolysis - the gold standard for purity
2) ...

https://www.youtube.com/watch?v=1ZMxW5UKRFA

An interesting video, mostly concerned with the making of Coke from coal. The last couple of minutes reference using coke in the lead smelting...

Sure. Facts are always good.
BTW, I do appreciate your posts on a regular basis.

~J

Ok, fair enough.
I appreciate your opinion on it.

As someone who handles this stuff on a regular basis, I have done exactly what the original poster has inquired about, and I hope he has...

Just a question: Have you ever had experience with pure antimony and it's uses? Or are you just an internet expert with an opinion based on no practical experience?

~J

Been there, done that.

Melt the antimony first, it takes lots of heat, definitely can't do it in an electric pot. Slowly add lead and as the lead melts in, the alloy fluid temperature will...

You can add me for the 240 solid PB. .432 2 cav if available, 4 cav if not.
cjsahlstrom.... yahoo... com

I have had similar colorings and slush with unknown alloys. My research leads me to think the bright blue coloring is some kind of cobalt oxide/salt. It tends to hang with copper/nickel, and...

To answer the question that everyone seems to be wondering: Can I take W/W and remove the SN/SB to get pure lead. In a word, no.
I think the caustic acts as a 'chemically reactive' flux.

I did...

It sucks being a hoarder.... doesn't it?

please change me to .432 dia
Thanks

yup, cant resist.

2 cav, HP GC, 434, All pins
cjsahlstrom at yahoo dot com

I'm in for one - 2 cav GC, HP, All pins, .432
cjsahlstrom at telus dot net

Thanks

I've have run into a particular blue tinge in a couple of mystery metal batches.
It will form on top of the ingots when cooling. Near as I can figure, it's related to a colbalt oxide and more of a...

#6 HP
cjsahlstrom at telus

Sorry bout dat, thought our user id was listed as well.

Can you update me (#6) to .432 dia instead of .434

Thanks!

I had a beer or two.

Does that count?