I never seen a man giving a pure care into almost every detail "cleaning materials , equipment, safety, explanation" and so on . I can say that your origins come from a noble french family 👌🤣🤣🤣
😳 I was nervous around 1mg/ml cisplatin. 350g in 0.5ish liters is horrifying. Maximum respect. That orange liquid was 700x stronger than the strongest platinum based chemotherapy.
The smile on your face said everything even though you were knackered . You were very proud of that one Sreetips, great successful refine yet again. Never seen platinum produced before. Thank you ❤
It's so amazing to see how the acid in that solution just chews up the Zinc Metal 😮 . You astound me with every video I watch your an amazing teacher to us viewers . I absolutely love watching your videos .
Congrats, I must respect that all the refined platinum will fit in a 2 car garage, so I think understand the value of the knowledge it takes to produce it. With the knowledge comes the responsibility of handling danger close chemical reactions. This procedure will work on a much larger amount of material, thank you professor.
Great work! All the time for a little button of this precious metal. It was worth it. I learned a lot about platinum group metals. Thank you for the great videos sreetips.
I wonder if he understands most of it himself! But by doing it you learn and by watching it you learn as well. If you learn from your own mistakes, you're doing good. If you learn from someone else's mistakes, you're doing excellent!
It's been 10 long days since I've been able to watch any of your vids. I'm glad to be back and to be able to continue watching your vids! Only 2 minutes into the vid, but wanted to say I've missed your vids. I wish I was in a position to be one of those to give you money. But being a single Parent on a slim budget is very difficult! I'm glad your wife is happy, heaven knows I've learned a great deal about that last year (the hard way)! Hope you have a GREAT Day and Year!!!!
That was stressful!!!!! Lol... Not in a bad way, rather, just all that you had to go through, and all the turmoil, and hoops you jumped through.... I personally do not think I will be harvesting my own P.G.M.'s, and will allow my friend to do what I collect, and will split the gains in a fair percentage... Ah, maybe down the road, as my experience comes up, I may attempt this avenue... Anyway, this video, although created all sorts of anxiety for me, was extremely satisfying to watch... I just mention, it does put into perspective, or why platinum is so costly, never mind the rarity of the element itself, as it really doesn't want to give itself up with out putting up a fight... Well done!!!
Awesome video series brother..! Simply fascinating how all that works and you have been able to learn these skills.. Thanks for the "shout out" and glad the package got there for you guys. Great work,, ! Will bid and donate more when we can,,
Last time I looked these XRF machines were in the tens of thousand of $USD. Has the price come down? I'd love to have one but at my level it's too expensive.
For the 174ml, being 20ml per gram, is that particular to one or the other you add? HCL or peroxide or the combination of both? is there a ratio of acid to peroxide? I suspect if too little acid is used to too much peroxide surely the platinum wouldn't be fully dissolved?
How do I extract platinum group metals from ore and then how do I precipitate them. I have read some different things like crush pan roast pan dissolve in AR then precipitate each specific metal using different chemicals. Which chemicals are used to precipitate rhodium platniun and palladium I am about to start getting ALOT of VERY high grade ore containing gold silver platniun palladium and rhodium as well as some of the base metals.. any help would be appreciated.
Yay ! Congratulations ! You got it a bead after that HUGE amount of effort ! Awesome ! Do you think you'll d any Pt refining again ? You already have some experience ....
I was wondering if you were going to get a mag stirrer!! I bet you're loving it :) One question, how much material, and what kind of gradient can be in the beaker before that thing gets bogged down?
I rinsed the black powder well before drying it out before I added the HCl. Maybe some nitrosol compounds remained in the black powder and provided the oxidation. It's an enigma. Platinum group metals do some strange things.
Very cool, sreetips! It was a lot of work and time spent on the recovery and refining of the platinum button. It's worth $71.62 USD at today's spot platinum price (5/12/22 @ $10.70/gram). Well done, Sir, I am always captivated by your chemistry experiments. As I've previously mentioned, I am on the lookout for sterling silver to make the silver shot, and set up my first silver cell. It seems like the logical place to begin my journey into the recovery and refining of precious metals. Two months ago, I was totally ignorant of all of this. I had no idea how any of this was done. I now feel confident that I could do some of these experiments myself. I'll be starting slowly, and building as I go along with each experiment. I'm a firm believer in "safety first" and I'll install a fume hood and buy all of the personal safety equipment to protect myself and any observer, before I attempt any of these experiments! You are setting a fantastic example in personal safety, sreetips, and I take your example to heart.
The critical concentration is 20ml of liquid per gram of metal. Concentration above or below this level could cause problems when precipitating the metals.
I hate, hate, hate refining the Platinum group metals! Though i had to learn to do it as part of the business, i nearly never refine any unless it's absolutely necessary! I get it isolated from other solutions and drop it with zinc. I then clean the zinc drop up with hcl til the metal is about 99%. That's Platinum black and as far as i go with it. The metals in the PGM group are such a pain in the ass to refine, unless you are dealing with a lot on a full time basis it's not worth it financially, but knowledge wise it is an asset. Business model wise mine comprises about 70% gold processing and 30% silver. Lou does all my PGM metals!
AQUILLA REFINING I have watched every single one of your videos and love watching you and Sreetips do your work. You both have inspired me and my love of metallurgic chemistry to experiment with some very small refining of my own silver.
me too, just to dangerous. I've got some more platinum jewelry that I want to refine and use formic acid to drop the platinum. I've got some sodium bromate so I'd like to try a bromate hydrolysis. I just want the experience but I do NOT want to become a regular platinum refiner. Too much pain in the $@%!
Muy lindo vídeo hermano tengo mi platino mal lavado se contamina quisiera saber como volver a empezar de nuevo mi trabajo espero su respuesta desde ya muchas gracias mi gmail www. romanbenitez1177@gmail.com ayúdame como precipitar de agua regia o en otra Fórmula espero ayuda desde ya muchas gracias
Very fascinating! You grip my attention on all your videos! Thank you for an awesome presentation. I have a question, When it comes to the beakers, Where do I find these types of beakers? I saw one fellow that does this and he uses glass jars as in big pickle jars and Mason jars,, Is that Feasible? One other thing, I saw a video on the extraction of gold, He used iodine, Have you ever heard of this and/or done this? What is your opinion on using iodine?
I buy the beakers on eBay. I use Pyrex or borosilicate glass vessels. I don't think pickle jars can take the heat, they'll break. Iodine will dissolve gold, but I've never tried it.
Great videos very detailed and interesting. The platinum you recovered if I'm correct was from scrap catalytic converters in previous video. The catalytic converters in that particular video are aftermarket and not original the precious metal content in them would be far less than original converter. I have a company that purchases converters full time. This is not a criticism just for your information. Your recovery would have been a lot higher if they were original converters. Great video
A fantastic series you've produced here. Many thanks. VERY educational. In fact I think I've come to the conclusion that Pt and Pd are just not worth the effort for me. I'll stick with Au/Ag. But this does leave me with a problem that I'm not sure what is the best way to proceed. I have a little under 300gm of Pd salt I dropped with DMG. Rough calculation would tell me around 90gm Pd so definitely not something I can just let sit and forget about.. All filtered and dried but still just sitting there. I'm really torn as to how best proceed. Should I calcine or redissolve in AR? Should I do the HCL & H2O2? What about dissolving in ammonia? I'm THINKING about dissolving in HCL and H2O2, filter the life out of it and then drop with zinc. Wash with HCL and then what is left "should" be pretty pure. But I'm so fart out of my comfort zone here and I think I just don't have anywhere near enough experience to delve into these metals.
I've done this material. I dissolved in AR and experienced runaway reaction that spewed hot acid everywhere. Once the salt was in solution I cemented the metals out on zinc - there was much platinum in that material as well because the DMG brings down platinum as well. Once cemented and excess zinc removed with HCl, I dried the black powder to get a weight then dissolved in HCl and h2o2 to achieve a solution that was 1 gram of the black powder per 20ml of solution. Then I added ammonium chloride to drop the platinum. I filtered out the platinum salt and bubble chlorine gas into the palladium to convert the palladium to ammonia soluble salt of palladium. I dissolved the brick red ammonia soluble palladium salt in 10% ammonia, filtered, and reacidify with HCl to get the beautiful canary yellow pure palladium salt. Then burn the canary yellow salt in a fused Quartz dish. I'd love to get my hands on that much Pd salt, it would make a great video!
Thank you very much. This helps. The bulk of t he Pd has come from scrap electronics so I don't think the Pt content would be high enough to warrant the full processing, and frankly the idea of platinosis is enough to keep me away from messing with it. But what a world we live in when Pt contamination is an actual problem to be overcome. :)
When refining palladium, ammonium chloride must be added, even if no platinum is suspected. The ammonium chloride facilitates the production of the brick red ammonia soluble palladium salt during the chlorine bubble. No ammonium chloride and the chlorine bubble won't work. That's when I discovered that DMG will drop platinum (not a well known fact in the refining community). Since it was palladium dropped with DMG I thought that ONLY palladium would be present. But when I added the ammonium chloride I was astonished to see platinum precipitating, a lot of it. There is no substitute for experience. If you want that palladium done right contact Lou Britton at aurisnoble.com located in Akron Ohio. He is an expert in PGM refining and he'll treat you right - no rip-off worries.
I understand you are zinc precipitating then HCl to clean it. Will this idea of peroxide and HCl work for SMB gold sponge? Then SMB again to pull the gold only out, then if there is Pt its ready to ammonium chloride the solution for the PT? You and your video's have been a great help. You always explain each step. Thanks
@@sreetips ok I sent another message its long about a precip thatb I didnt think worked and put back on heat and got a huge drop. What about that messsage, it very important what to do.
I have a gulf ball size round piece of metal .it is platinum I believe. It weighs about 1 and three quarters of a pound . It is very heavy for it's size ....probably because it has been smelted so it is more pure and it is about the right density about 21 .Now the native or natural platinum nuggets I have are about 14 in density .. .the loss in density is probably due to the other base metals and other pgm's in them. My question is this,...the ball I have that has been smelted, do I have to smelt it again to make it even more pure, or is smelting it once enough . Also where do I sell something like almost 2 pounds of platinum, and do I need to certify it and have it stamped, or can I sell it like it is?
Hey, I have an idea. Try to cement some Pt salts onto zinc pennies then weigh a penny (38 grains) and see how much Pt deposited by weighing platinum plated penny.
Well done!....You understand, chemistry, metallurgy and Stoichiometry, the latter is very, very important....Make a good sniper you, lol, first round hits.....Stoichiometric equations.
Ow awesome...Wikipedia says you can turn the AmmoniumhexaChloroPLatinate directly into Platinum spunge when braught in contact with 200 deg/C hydrogen :D
Yes, I could have set then aside. But I didn't know exactly what they were and I know I'm guaranteed to get them back if they're safely tucked away in my new stock pot.
At 51m40s it could be worthwhile to rinse the fused quartz dish out using some dry borax powder. Then adding the rinses to the crucible, then adding the straight borax to cover the whole mound.
After watching this excruciating series on stock pot refining (Loved it) I can't help but wonder if this process could be at least semi automated with a little plumbing skill and the reactivity table, I am not a chemist and have never refined, but what if the stockpot was set up as a series of interconnected buckets (or glassware) the first one containing silver and set up with an s trap at the to p to flow into a bucket containing gold and so on up to aluminium? I know you mentioned that one of your viewers tried cementing with less reactive metals like silver and it didn't work, but wasn't this most likely due to not leaving it for long enough? Wouldn't this yeild a series of powders that required much lesss refining and chemicals?
we have about 200 grams of platinum lemel left over from jobs.we really need to start refining our own rather than selling it back to scrap and loosing about 70% on the $. I used to do this when I was an apprentice and it exploded on me once when I got the mix slightly wrong. its serious stuff
Refining platinum is nothing like gold or silver. It's much more dangerous. A fume hood is an absolute must. Platinum dissolved in acid forms a compound that is of the highest toxic skin sensitizers known. you would be better off finding a reputable refiner to do it for you. Or just sell it as-is.
PTFE (Teflon) coated iron, there's a rotating magnet in the cooker base that moves it. PTFE is pretty much immune to acids, the biggest problem I can see is if the covering gets cut or cracks, the iron is going to become a major contaminate for whatever is in the beaker at the time.
Hello professor Professor, I had a aqua regia acid containing platinum and palladium I added ammonium chloride to it to precipitate platinum, but because the pH of the aqua regia was zero and it was very acidic, the precipitate was dissolved again, then I added SODIUM HYDROXIDE to the solution and the pH became 4 and the aqua regia was heated and a mustard yellow precipitate was formed, which was dissolved in water. It dissolves but does not dissolve in distilled water and ammonium chloride Is this the platinum deposit?
@@sreetips from "autocatalystmarket.com/us/en/articles/which-catalytic-converters-have-the-most-platinum" For many years, platinum has been the most valuable metal in a catalyst. There were times when it cost five times as much as palladium. But since 2015, the production of diesel vehicles has dropped significantly. This triggered a drop in platinum prices. If earlier this metal cost $ 2.2 thousand per ounce (about 31.1 grams), then in recent years it has been estimated at $ 600-800. In turn, precious metals used in gasoline cars have risen in price. Thus, the prices for rhodium in recent years have grown from 1.5 thousand to 12 thousand dollars per ounce. that price for rhodium sounds impressive...
@@rhysfirth3506 palladium is now more used in cat converters and i believe the price has jumped ahead of platinum - precious metal prices are a fickle thing
hey I found a PGM ore with a nugget running through it...probably the size of a brain/human that weighs 16.4 lbs..it passed the peroxide test and I'm trying to figure out what to do, chemicals like you or use my smelting furnace
awesome have hauled hundreds of scrap cars and trucks off. only wished all the time there was a cost effective way to get more than 20 darn buck for those cats
I found a 5.5lb nugget/rock with my metal detector and I believe it's platinum or palladium because metal detector shows it's a gold metal group by number and a jeweler told me there's gold in it but the main color of the rock looks like palladium and/platinum with streaks of that rainbow colored palladium metal and shiny like platinum. Would you know by a picture of the rock?
Hello and courtesy Dear Professor, I have a soil that has palladium and iron. I dissolved iron using dilute sulfuric acid. Now, I put the soil in an Aqua regia solution and heated it until the palladium dissolves. Is it necessary to neutralize nitric acid to precipitate the palladium in the acid? Can palladium be deposited with zinc sheet? What should I do to purify before melting?
@@sreetips Professor, DMG is very expensive in Iran. There is a little gold, a little platinum and a lot of palladium in my soil. I want to use Aqua regia acid and then use the zinc sheet for settling, should neutralization be done before using the zinc sheet? Master, I have been following you for 5 years from Iran and this is my honor.
What would be nice is to know from how many kilo of Silver sterling you get that amount of Pt...as well as Au and Pd...I suppose it's hard to keep tracking. But how much you guess?
I never seen a man giving a pure care into almost every detail "cleaning materials , equipment, safety, explanation" and so on . I can say that your origins come from a noble french family 👌🤣🤣🤣
That's the first time I ever seen anyone refine platinum before!
Nice Job!!
😳 I was nervous around 1mg/ml cisplatin. 350g in 0.5ish liters is horrifying. Maximum respect.
That orange liquid was 700x stronger than the strongest platinum based chemotherapy.
I always use "ashless" filter paper because I often need to incinerate the filtrate. You make the best videos available.
You, Sir, have an impressive dish collection from the 70's and 80's
Yea he does
Gives you a lot of respect for the guys who do this on an industrial scale.
👍👍👍
The smile on your face said everything even though you were knackered . You were very proud of that one Sreetips, great successful refine yet again. Never seen platinum produced before. Thank you ❤
This is absolutely amazing. You Sir , are a chemistry genius! I am so mesmerized by these vids you produce .
Your videos are as precious as the metals you refine!
Thank you!
beautiful work, the Platinum, the process, the video, the everything;
It's so amazing to see how the acid in that solution just chews up the Zinc Metal 😮 . You astound me with every video I watch your an amazing teacher to us viewers . I absolutely love watching your videos .
Congrats, I must respect that all the refined platinum will fit in a 2 car garage, so I think understand the value of the knowledge it takes to produce it. With the knowledge comes the responsibility of handling danger close chemical reactions. This procedure will work on a much larger amount of material, thank you professor.
Great work! All the time for a little button of this precious metal. It was worth it. I learned a lot about platinum group metals. Thank you for the great videos sreetips.
I did it for the education and to make the video. I've got some platinum jewelry to refine in a future video.
Outstanding process. Thanks for sharing.
Great video. I wish I understood 1/4 of what you were doing but I watch anyway. Keep up the good work.
I wonder if he understands most of it himself! But by doing it you learn and by watching it you learn as well. If you learn from your own mistakes, you're doing good. If you learn from someone else's mistakes, you're doing excellent!
Belo trabalho,muito bem elaborado. Meus parabéns pelo feito.
Absolutely awesome! Cant imagine how heavy that button feels in my hand....
It ruptured the very fabric of spacetime
A good man.You show everything.
Your videos are fantastic! I'd love to learn more about the chemical reactions going on.
It's been 10 long days since I've been able to watch any of your vids. I'm glad to be back and to be able to continue watching your vids! Only 2 minutes into the vid, but wanted to say I've missed your vids. I wish I was in a position to be one of those to give you money. But being a single Parent on a slim budget is very difficult! I'm glad your wife is happy, heaven knows I've learned a great deal about that last year (the hard way)!
Hope you have a GREAT Day and Year!!!!
Welcome back Shane.
sreetips Good to be back!!
That was stressful!!!!! Lol... Not in a bad way, rather, just all that you had to go through, and all the turmoil, and hoops you jumped through.... I personally do not think I will be harvesting my own P.G.M.'s, and will allow my friend to do what I collect, and will split the gains in a fair percentage... Ah, maybe down the road, as my experience comes up, I may attempt this avenue... Anyway, this video, although created all sorts of anxiety for me, was extremely satisfying to watch... I just mention, it does put into perspective, or why platinum is so costly, never mind the rarity of the element itself, as it really doesn't want to give itself up with out putting up a fight... Well done!!!
Nice job Mr. Sreetips!!!
Awesome!
Long time comin', but ya finally got it!
Nice work buddy!
Now, take a nap! LOL
I have seen so many of your videos it seems like second nature now to just go around thinking about metal refining
Wow , thank you , just came through my mind how it's made and I got all the answers, cheers
Thank for sharing thies video ,i remided me my old colllage days ,and it potetialy may help me,May Allah bless you all :Amen
great work very interesting.
Stirring stick thing is amazing , I’ll get some for the mrs
Thank you, Professor, for these wonderful, invaluable videos
Awesome video series brother..! Simply fascinating how all that works and you have been able to learn these skills.. Thanks for the "shout out" and glad the package got there for you guys. Great work,, ! Will bid and donate more when we can,,
We could tell that it was hand made. She has quite a collection. Thank you very much.
comme toujours you my best youtube video man
Another Fantastic Episode!!! But man oh man... did this episode seem much more tedious than the normal gold melts
Current spot price of platinum = $31.20/gram
Your yield = 6.6 g
Spot Value = $31.20 (USD)/gram * 6.6g = $205.92 (USD)
It is here.... the shiney part :D.... think I'm gonna grab a beer and watch it now...
Fantastic Sir Sreetips.
I like your videos I've always been interested in gold refining techniques this is all new. chemistry bug has bit me.
Great class.please tell me how many catlitic did you use to gey the 21 grams of precious metals or an average precious for each converter?than you
Great video!
Very cool! Thank you!
Good tutorial!!
Thankyou Sir, it is super cool!
I like your videos . You need XRF machine to know the metal purity(%) .Also it helps to calculate the amount of chemical use for the refining .
Last time I looked these XRF machines were in the tens of thousand of $USD. Has the price come down? I'd love to have one but at my level it's too expensive.
Nice experiment,
Would you do a rhodium one? Most likely sit rhodium from platinum rhodium?
Have you considered using a centrifuge to separate your precipitates instead of filter paper?
Totaly useles trivia: @ 24:48 when Sreetips tilts the beaker and stirrer starts to slide dow, a "face" appears on the bottom of the beaker.
great job
For the 174ml, being 20ml per gram, is that particular to one or the other you add? HCL or peroxide or the combination of both? is there a ratio of acid to peroxide? I suspect if too little acid is used to too much peroxide surely the platinum wouldn't be fully dissolved?
very informative
You are genio my respec mister👍
How do I extract platinum group metals from ore and then how do I precipitate them. I have read some different things like crush pan roast pan dissolve in AR then precipitate each specific metal using different chemicals. Which chemicals are used to precipitate rhodium platniun and palladium I am about to start getting ALOT of VERY high grade ore containing gold silver platniun palladium and rhodium as well as some of the base metals.. any help would be appreciated.
You are great 👌
Great video thanks again .would you ever consider processing ruthenium .i have not seen any procedures for it yet i know its soluble in bleach.
I don't have any experience with that yet.
At 22:38, why not just pull the visible pieces of zinc out with tongs instead of melting with hydrochloric acid? Just wondering.
1:49 It's really not a handout bro, u working hard out here and u don't gotta be filming but you are, and that's the service you're providing
Awesome sir
Yay ! Congratulations !
You got it a bead after that HUGE amount of effort ! Awesome !
Do you think you'll d any Pt refining again ?
You already have some experience ....
I've got some more in my new stock pot and I've got some Pt jewelry. I'd like to do formic acid Pt drop and a bromate hydrolysis.
i say Thank You for all the Knowhow that You share! with us, I have Contribute/Donate You at Paypal, thanks for this Job You do here!
Thank you very much!
oh yeah, v.nice after all that work ;)
you are the best - what is the ratio of time difference to dissolve platinum powder in Hydrochloric acid + Hydrogenparaoxide and Aquaregia .
I think it's about the same. Powder Pt will dissolve much faster than the solid metal.
I’m working on one of these projects . Hoping it pays off
I was wondering if you were going to get a mag stirrer!! I bet you're loving it :) One question, how much material, and what kind of gradient can be in the beaker before that thing gets bogged down?
Must have missed that bit, re-watched the beginning, looks like it will climb depending on the strength of the field!
Great work , about of dissoved platinuim in hot hcl , maybe the oxydation was happen when cimentation was dry under presence of oxygen , im not sure.
I rinsed the black powder well before drying it out before I added the HCl. Maybe some nitrosol compounds remained in the black powder and provided the oxidation. It's an enigma. Platinum group metals do some strange things.
@@sreetips all the best .
Excellent
Very cool, sreetips! It was a lot of work and time spent on the recovery and refining of the platinum button. It's worth $71.62 USD at today's spot platinum price (5/12/22 @ $10.70/gram). Well done, Sir, I am always captivated by your chemistry experiments.
As I've previously mentioned, I am on the lookout for sterling silver to make the silver shot, and set up my first silver cell. It seems like the logical place to begin my journey into the recovery and refining of precious metals. Two months ago, I was totally ignorant of all of this. I had no idea how any of this was done. I now feel confident that I could do some of these experiments myself.
I'll be starting slowly, and building as I go along with each experiment. I'm a firm believer in "safety first" and I'll install a fume hood and buy all of the personal safety equipment to protect myself and any observer, before I attempt any of these experiments! You are setting a fantastic example in personal safety, sreetips, and I take your example to heart.
When I first started I did small batches until I got the hang of it
Another really interesting video. Can you explain the bit where you arrived at 174ml please. Where did the 8.7 x 20ml come from? Many thanks.
The critical concentration is 20ml of liquid per gram of metal. Concentration above or below this level could cause problems when precipitating the metals.
couldn't find your ebay store...
I hate, hate, hate refining the Platinum group metals! Though i had to learn to do it as part of the business, i nearly never refine any unless it's absolutely necessary! I get it isolated from other solutions and drop it with zinc. I then clean the zinc drop up with hcl til the metal is about 99%. That's Platinum black and as far as i go with it. The metals in the PGM group are such a pain in the ass to refine, unless you are dealing with a lot on a full time basis it's not worth it financially, but knowledge wise it is an asset. Business model wise mine comprises about 70% gold processing and 30% silver. Lou does all my PGM metals!
AQUILLA REFINING I have watched every single one of your videos and love watching you and Sreetips do your work. You both have inspired me and my love of metallurgic chemistry to experiment with some very small refining of my own silver.
me too, just to dangerous. I've got some more platinum jewelry that I want to refine and use formic acid to drop the platinum. I've got some sodium bromate so I'd like to try a bromate hydrolysis. I just want the experience but I do NOT want to become a regular platinum refiner. Too much pain in the $@%!
Muy lindo vídeo hermano tengo mi platino mal lavado se contamina quisiera saber como volver a empezar de nuevo mi trabajo espero su respuesta desde ya muchas gracias mi gmail www. romanbenitez1177@gmail.com ayúdame como precipitar de agua regia o en otra Fórmula espero ayuda desde ya muchas gracias
I have some platinum ore. Can you process it using aqua Regia??? Thinking about trying it out tonight using a magnetic hot plate stirrer.
Rendering metals from ore is called smelting. I don't have any experience there.
Very fascinating! You grip my attention on all your videos! Thank you for an awesome presentation.
I have a question, When it comes to the beakers, Where do I find these types of beakers? I saw one fellow that does this and he uses glass jars as in big pickle jars and Mason jars,, Is that Feasible? One other thing, I saw a video on the extraction of gold, He used iodine, Have you ever heard of this and/or done this? What is your opinion on using iodine?
I buy the beakers on eBay. I use Pyrex or borosilicate glass vessels. I don't think pickle jars can take the heat, they'll break. Iodine will dissolve gold, but I've never tried it.
@@sreetips Thank you for your reply I appreciate that, and I plan to take advantage of what you told me, Thanks again.
Great videos very detailed and interesting. The platinum you recovered if I'm correct was from scrap catalytic converters in previous video. The catalytic converters in that particular video are aftermarket and not original the precious metal content in them would be far less than original converter. I have a company that purchases converters full time. This is not a criticism just for your information. Your recovery would have been a lot higher if they were original converters. Great video
Daniel, I was glad to be able to recover the small amount that I got.
How much pgm are in average CAR
A fantastic series you've produced here. Many thanks. VERY educational. In fact I think I've come to the conclusion that Pt and Pd are just not worth the effort for me. I'll stick with Au/Ag.
But this does leave me with a problem that I'm not sure what is the best way to proceed. I have a little under 300gm of Pd salt I dropped with DMG. Rough calculation would tell me around 90gm Pd so definitely not something I can just let sit and forget about.. All filtered and dried but still just sitting there. I'm really torn as to how best proceed. Should I calcine or redissolve in AR? Should I do the HCL & H2O2? What about dissolving in ammonia? I'm THINKING about dissolving in HCL and H2O2, filter the life out of it and then drop with zinc. Wash with HCL and then what is left "should" be pretty pure. But I'm so fart out of my comfort zone here and I think I just don't have anywhere near enough experience to delve into these metals.
I've done this material. I dissolved in AR and experienced runaway reaction that spewed hot acid everywhere. Once the salt was in solution I cemented the metals out on zinc - there was much platinum in that material as well because the DMG brings down platinum as well. Once cemented and excess zinc removed with HCl, I dried the black powder to get a weight then dissolved in HCl and h2o2 to achieve a solution that was 1 gram of the black powder per 20ml of solution. Then I added ammonium chloride to drop the platinum. I filtered out the platinum salt and bubble chlorine gas into the palladium to convert the palladium to ammonia soluble salt of palladium. I dissolved the brick red ammonia soluble palladium salt in 10% ammonia, filtered, and reacidify with HCl to get the beautiful canary yellow pure palladium salt. Then burn the canary yellow salt in a fused Quartz dish. I'd love to get my hands on that much Pd salt, it would make a great video!
Thank you very much. This helps. The bulk of t he Pd has come from scrap electronics so I don't think the Pt content would be high enough to warrant the full processing, and frankly the idea of platinosis is enough to keep me away from messing with it.
But what a world we live in when Pt contamination is an actual problem to be overcome. :)
When refining palladium, ammonium chloride must be added, even if no platinum is suspected. The ammonium chloride facilitates the production of the brick red ammonia soluble palladium salt during the chlorine bubble. No ammonium chloride and the chlorine bubble won't work. That's when I discovered that DMG will drop platinum (not a well known fact in the refining community). Since it was palladium dropped with DMG I thought that ONLY palladium would be present. But when I added the ammonium chloride I was astonished to see platinum precipitating, a lot of it. There is no substitute for experience. If you want that palladium done right contact Lou Britton at aurisnoble.com located in Akron Ohio. He is an expert in PGM refining and he'll treat you right - no rip-off worries.
@@sreetips I live in Akron! Thank you so much for letting us know about Auris Nobel LLC. (means alot)
I understand you are zinc precipitating then HCl to clean it. Will this idea of peroxide and HCl work for SMB gold sponge? Then SMB again to pull the gold only out, then if there is Pt its ready to ammonium chloride the solution for the PT? You and your video's have been a great help. You always explain each step. Thanks
I've not tried this so I don't know.
@@sreetips ok I sent another message its long about a precip thatb I didnt think worked and put back on heat and got a huge drop. What about that messsage, it very important what to do.
I have a gulf ball size round piece of metal .it is platinum I believe. It weighs about 1 and three quarters of a pound . It is very heavy for it's size ....probably because it has been smelted so it is more pure and it is about the right density about 21 .Now the native or natural platinum nuggets I have are about 14 in density ..
.the loss in density is probably due to the other base metals and other pgm's in them. My question is this,...the ball I have that has been smelted, do I have to smelt it again to make it even more pure, or is smelting it once enough . Also where do I sell something like almost 2 pounds of platinum, and do I need to certify it and have it stamped, or can I sell it like it is?
I’ve used ARA in Dallas. Talk to JC there he can help you. You’ll need to set up an account. aragold.com
Does the volume of the solution displaced by the stir bar effect the concentration to the point that you have to factor it in
No, the level I'm looking for is from 15 to 20 milliliter a of liquid per gram of metal.
Hey, I have an idea. Try to cement some Pt salts onto zinc pennies then weigh a penny (38 grains) and see how much Pt deposited by weighing platinum plated penny.
Well done!....You understand, chemistry, metallurgy and Stoichiometry, the latter is very, very important....Make a good sniper you, lol, first round hits.....Stoichiometric equations.
Well, you have taught me to never recover platinum. Out of your many awesome videos this one, gold pins, and the carpet looked very arduous.
Getting high purity precious metals, from any source, is never quick and easy. Doing it at home in your garage is not for everyone.
@@sreetips that's why you're the man.
Ow awesome...Wikipedia says you can turn the AmmoniumhexaChloroPLatinate directly into Platinum spunge when braught in contact with 200 deg/C hydrogen :D
At 40:20 why add the metals to the stock pot? Aren't these essentially a purified mix of PGMs?
Yes, I could have set then aside. But I didn't know exactly what they were and I know I'm guaranteed to get them back if they're safely tucked away in my new stock pot.
At 51m40s it could be worthwhile to rinse the fused quartz dish out using some dry borax powder.
Then adding the rinses to the crucible, then adding the straight borax to cover the whole mound.
That's a good suggestion, thank you.
Should've used a glass rod to direct the liquid into the filter paper cone so it won't splash out.
Hi, what of Percentage
% oxygen peroxide did you use to dissolve the platinum and gold?
12%
After watching this excruciating series on stock pot refining (Loved it) I can't help but wonder if this process could be at least semi automated with a little plumbing skill and the reactivity table, I am not a chemist and have never refined, but what if the stockpot was set up as a series of interconnected buckets (or glassware) the first one containing silver and set up with an s trap at the to p to flow into a bucket containing gold and so on up to aluminium? I know you mentioned that one of your viewers tried cementing with less reactive metals like silver and it didn't work, but wasn't this most likely due to not leaving it for long enough? Wouldn't this yeild a series of powders that required much lesss refining and chemicals?
New stock pot video coming soon
@@sreetips I've yet to watch stockpot 2
Sounds like you needed to get into chemistry yonks ago. It's never too late. You have advanced ideas 💡
Is it possible to smelt directly after the zinc precipitation stage?
Yes, it can be melted. Smelt means rendering metals from ore.
we have about 200 grams of platinum lemel left over from jobs.we really need to start refining our own rather than selling it back to scrap and loosing about 70% on the $.
I used to do this when I was an apprentice and it exploded on me once when I got the mix slightly wrong.
its serious stuff
Refining platinum is nothing like gold or silver. It's much more dangerous. A fume hood is an absolute must. Platinum dissolved in acid forms a compound that is of the highest toxic skin sensitizers known. you would be better off finding a reputable refiner to do it for you. Or just sell it as-is.
sreetips thanks
What is the best supplier for nitric acid? I have bought several 1 liter bottles on amazon at a cost of about $65.
I buy from GFS Chemicals
If the platinum mixture is concentrated by you and then you put a bunch of distilled water in it is it still concentrated
No, adding water will dilute it.
I can see your wrists and you're working with platinum!
You don't miss a thing do you?
I get inspired from practice you friends. I want to know what is put in it that can stir stirring and turning around. It is not oxidized by acids
PTFE (Teflon) coated iron, there's a rotating magnet in the cooker base that moves it. PTFE is pretty much immune to acids, the biggest problem I can see is if the covering gets cut or cracks, the iron is going to become a major contaminate for whatever is in the beaker at the time.
What do you call silver or gold after it has dropped out of solution and is like a fine dust? Is it nano silver or gold?
Cement silver
Hello professor
Professor, I had a aqua regia acid containing platinum and palladium
I added ammonium chloride to it to precipitate platinum, but because the pH of the aqua regia was zero and it was very acidic, the precipitate was dissolved again, then I added SODIUM HYDROXIDE to the solution and the pH became 4 and the aqua regia was heated and a mustard yellow precipitate was formed, which was dissolved in water. It dissolves but does not dissolve in distilled water and ammonium chloride
Is this the platinum deposit?
I’ve never tried sodium hydroxide. I don’t have much experience with platinum refining.
I just looked up the value of platinum, surprised me to see it's substantially lower than gold. I've always thought it was worth more per ounce.
They crossed paths several years ago.
@@sreetips from "autocatalystmarket.com/us/en/articles/which-catalytic-converters-have-the-most-platinum"
For many years, platinum has been the most valuable metal in a catalyst. There were times when it cost five times as much as palladium. But since 2015, the production of diesel vehicles has dropped significantly. This triggered a drop in platinum prices. If earlier this metal cost $ 2.2 thousand per ounce (about 31.1 grams), then in recent years it has been estimated at $ 600-800. In turn, precious metals used in gasoline cars have risen in price. Thus, the prices for rhodium in recent years have grown from 1.5 thousand to 12 thousand dollars per ounce.
that price for rhodium sounds impressive...
@@rhysfirth3506
palladium is now more used in cat converters and i believe the price has jumped ahead of platinum - precious metal prices are a fickle thing
hey I found a PGM ore with a nugget running through it...probably the size of a brain/human that weighs 16.4 lbs..it passed the peroxide test and I'm trying to figure out what to do, chemicals like you or use my smelting furnace
Not familiar with peroxide test. Get some in a test tube. Hit it with hot AR. Then test with stannous. That’s what I’d do if it were mine.
awesome have hauled hundreds of scrap cars and trucks off. only wished all the time there was a cost effective way to get more than 20 darn buck for those cats
Very nice video. That is about $200 worth of platinum, how much do you reckon you used ito consumables?
I don’t know because this is my hobby and I don’t track expenses for each batch
I found a 5.5lb nugget/rock with my metal detector and I believe it's platinum or palladium because metal detector shows it's a gold metal group by number and a jeweler told me there's gold in it but the main color of the rock looks like palladium and/platinum with streaks of that rainbow colored palladium metal and shiny like platinum. Would you know by a picture of the rock?
Probably not.
Hello and courtesy
Dear Professor, I have a soil that has palladium and iron. I dissolved iron using dilute sulfuric acid.
Now, I put the soil in an Aqua regia solution and heated it until the palladium dissolves. Is it necessary to neutralize nitric acid to precipitate the palladium in the acid?
Can palladium be deposited with zinc sheet?
What should I do to purify before melting?
Palladium is soluble in nitric acid. The only one of the six sister metals that is. I like to use DMG to separate the palladium.
@@sreetips Professor, DMG is very expensive in Iran.
There is a little gold, a little platinum and a lot of palladium in my soil.
I want to use Aqua regia acid and then use the zinc sheet for settling, should neutralization be done before using the zinc sheet?
Master, I have been following you for 5 years from Iran and this is my honor.
Zinc will drop everything.
This is similar to my stock pot.
@@sreetips Thanks professor
What would be nice is to know from how many kilo of Silver sterling you get that amount of Pt...as well as Au and Pd...I suppose it's hard to keep tracking. But how much you guess?
That probably a couple years accumulation
Bug got me too!