Wonderful class, vibrant expectation at the development of the process Yes, you're learning but teaching at the same time. Good to see you're protected like an astronaut. That's also a valuable lesson.
Great beginning to another great series. After doing my stock pot and all my filters I've decided I am done with PGMs. The risk, time and expense is just not worth it to me. Now that I have thoroughly recovered all of the silver and gold, the remaining black sludge is all going to a refinery and I will happily take whatever they will give me. 99% of the Pd is from electronic scrap and I assume most of the Pt came with it so for me it is all just a waste by-product that I can sell off. Seeing as this is just a hobby for me I am not willing to risk my health nor keep wasting money on reagents or time on recovery any longer. Add to this that Pt is only around $35 CDN per gram and the choice was an easy one for me. With that said I would really like to have a nice shiny Pd button from what I have recovered to add to my collection but my time and money are better spent on silver and gold. Thank you very much for continuing your ongoing experimentation and discovery with these series. At the very least you've help educate me on what I am not willing to do. :)
Mr. Sreetips, You are truly a master at what you do. I wholeheartedly regret critisizing you a couple of months ago. I should have known to keep my piehole shut when it comes to what, and why people choose to sell things; total embarrasment on my part. That said, I thoughoroly enjoy all the videos you post! Not only are they educational, but show how dangerous these processes are to the leyman. I am happy you diddn't block me when I judgingly spouted off to you in the past and I am truly honored to view your videos. Thank you for the entertainment, Paul. P.S. If you ever travel to Laos, look me up, I got a rack of BBQ. N. Carolina ribs waiting for you. ( gloves and respirator required as well.) 🤣🙈💥
Stubborn stuff that Platinum. Gold and Silver certainly behave themselves a lot more. Very interesting. Thanks @sreetips.Looking forward to the end result. 👍👍
Ow and you deserved a like.. I like youtube so I can watch people do stupid things I want to see and won't do myself :D.. Fun for real ..you are still one of my best watched channels.. I just like chemistry.
I'm not only seeing the danger of the PGM solutions as an issue, but also with the amount of time it takes to get just 11 grams of metal dissolved. The chief value of the video is that it demonstrates that platinum refining is profitable only as a full-time job and not as a hobby.
Since you have found that the scrap platinum dissolves so slowly in aqua regia, why don't you first alloy the scrap with silver (inquart), then pour the alloy into water to form high surface area castings? These castings could then be more easily dissolved first in nitric acid to remove the silver and then use aqua regia to dissolve the remaining platinum.
Love your videos, I've been watching a very long time. I had a joke for ya, $100.00 if you can tell me in this video how many times he says, "I have a beaker here"! Lol, I'm just kidding on the 100 deal lol, but love how you just always come up with more and much larger beakers all the time. :) Have a very awesome day and GOD bless you and your family and ty for your videos, they really are a blessing :).
PS; I used to watch your videos when they very first come out! I just can't take the waiting for part 2,3,4 and 5 and so on lol, so I'm waiting for all the series to be done before I watch, so I'm not going nuts waiting on the others :).
YES! I was wondering, when you put the zink in the solution to cement out the platinum, is that also producing heat? There was some kind of white fume coming off of it.. Great video again and already looking forward to part 2!
That color could be from the Iridum that you know was in some of those metals i think. Couldn't it? I believe Iridum is that color when first disolved then can change color with time if allowed to sit.
Yes how you doing I find what you do very interesting even though I'm just some dumb auto mechanic but I was curious where did the fumes go when they exhaust from your fume Hood
Outside. You wouldn’t pull your car in the garage, shut the door, start the car in the closed up garage. Same principle with the fumes from these reactions. Both would end up killing you.
is the black ring around the inside of that beaker just really fine platinum/palladium? if so, is there enough of it to warrant trying to clean it off and collect it along with the rest of it? and if it is how will get it off of there? all the rinsing didnt do much to it. so im guessing youd have to wipe it off somehow without it clinging to whatever you wipe it with. be interested to find out the method.
I have a few questions on the PGMs when it comes to refining and dissolving in aqua regia mainly separating rhodium from platinum. The material is alloyed together
@@sreetips awesome thank you for the info I have found a paper about "A Procedure for the Separation of the Six Platinum Metals from One Another and for their Gravimetric Determination" this explains everything in great detail I was just missing that small piece of information
I got to a point that I only had a few grams of mixed black PGMs so I decided to save it until I accumulated some more. I’ll add it to my next stock pot series so I’ll have a good amount of metal to show for the work involved
You started with Platinum / Iridium . The zinc will drop out all the metal so you will end up with what you started with? How do you separate the Platinum from the Iridium?
Hey Senior Chief. Remember you removed a piece of unknown metal just before dissolving, so that weight is missing from the initial 11.4 grams. Also, did you figure out what that mystery metal was? And as always, keep the great content coming!
Sreetips, could you filter the black platinum metal and keep rinsing in the filter until it was clean? Maybe the vacuum filter? I finally understand about you not using the copper precipitate! I didn't realize it was contaminated with iron. Maybe sell it to the scrap metal people lol!
You probably ended up with “more” metal not because you incorrectly measured your beaker initially but because you used the beaker for reaction after reaction and inevitably a couple grams of metals and solvents stuck to the sides
You don’t think it’s a bad idea to have the aqua regia solution at boiling considering you have precious metals dissolved in there? You might be losing some as vapors
Sreetips - you're starting to make PGM refining looks easy! The process in this video seems really clean which I'm guess reflects the level of expertise you've attained at this over the years. One quick question, do you know what those black PGM compounds actually are at the end? I was wondering if those are a bit heaver than elemental PGMs due to the additional atomic weight in the compound. As an example (and a real chemist please correct me on this!), if I take the molecular mass of Iron oxide Fe2O3 and divide it by the atomic weight of Iron (Fe) I get a ratio of around 2.85 - so am I right in thinking that is how much the weight of my Iron powder would increase by if I could turn it in to pure Fe2O3? (I realizing getting pure Fe2O3 may not be easy...).
Working on part 2 right now. Trying to get the copper and rhodium (if any) out with boiling sulfuric - scary. Your analysis sounds about right. But I’m not a chemist either. The black powder is metallic platinum, with some palladium and copper. Aqua regia won’t dissolve rhodium or iridium. But these metals behave strangely when alloyed with other metals. It’s all new. I’m learning as I go relying heavily on my experience with other refining adventures.
@@sreetips I'm glad you have the skill and knowledge to do this stuff relatively safely, but yeah I can imagine this gets pretty hair raising! I can see you work very hard to go slow and carefully with these processes - I can really appreciate that. I love to see these refining videos, but also like to see you keeping safe! Your warnings are also much appreciated!
Mr Sreetips, could you say what that "black powder" that sunk to the bottom after the zinc treatment is? Is that platinum oxide or platinum chloride ? I guess the black powder is chemically inert ?
There’s other metals in there too. Other platinum group metals and high probability of copper. The copper will be a black powder also and indistinguishable from the precious metals. Any metal under zinc will cement out
Do you think you can get your little torch hot enough to Melt Platinum? the melting point of platinum is 3215F about 1267 degrees F hotter than gold. (1943 F) You might not be able to melt it in an open dish. My enclosed gold furnace barely melts copper, and it's maximum temperature is 1150c (2102F)
I’ve melted platinum with my oxy/acetylene torch in a previous video. While it’s not the best gas to use (hydrogen torch is preferred) it will get the job done with small quantities.
Hey sreetips love your content. I was wondering if in your next video you could show off and talk about the torch you use, type of tip, psi of oxygen you use, etc. You've shown off all your toys except your torch. Also wondering why you don't use propane or hydrogen instead of acetylene.
Sure, be glad to. I use acetylene because it’s what I learned with and I just tend to stick with proven apparatus and reagents. I’m the the kind who will order the same dish at a particular restaurant over and over because I know what I’m getting.
I add ammonium chloride to precip platinum. At that point I’ll add more than I need because the palladium MUST be infused with ammonium chloride to get it out. Ammonium chloride must be added to the palladium whether there’s platinum in there or not. It’s essential for the palladium refining
The black powder should be platinum, palladium, and copper. AR doesn’t dissolve rhodium or iridium. But working with PGMs is like a box of chocolates (for me) you never know what you’re going to get.
@@sreetips I like it. Great videos also sir. Why I'm not comfortable with doing platinum, looking at how you've worked silver and gold, I have learned a lot from you. Great job 👍
If I were you I keep those filter papers with your undissolved platinum and throw them in your optional next refining cause there is toxic ChloroPlatinum salt in it..when they dry up it will become hazardous dust.
I noticed you even took a piece of material out of the amount material to refine after you wieghed the material so the resul tbeing off is even bigger than you thought.
not sure if you caught that but you said "Niner" while reading out the weight :) I know why but many will not know why. thanks for another great video !
My same thought....he had extra metal that wasn't even dissolve during the initial process which means he was actually at less than the original 11.4g he started with, so it must've come from the Zinc somehow.(unless sreetips really screwed up and mis-weighted his beaker somehow, which I find highly unlikely given his attention to detail 😊)
Iridium does NOT react with ANY acids you have. It will literally only be dissolved in molten cyanic salts. Other precious metal impurities like ruthenium and rhodium will also not react with Aqua regia. Palladium however, as well as copper and cobalt (other uncommon impurities) will readily dissolve in aqua regia immediately
Quick read on duckduckgo: Ruthenium separated by adding sodium bromate and distilling. Palladium separated by adding di-n-hexyl sulphide (DHS). Iridium separated by using tributylphosulphate (TBP), not sure exactly how it works. Rhodium most difficult to separate, suggestion was to chloridise, roast and then leach the salt, again not sure exactly how that works. The above seems to require some serious NileRed style kit. Feel free to chime in anyone.
For a trained chemist not familiar with separating the six sister metals in the platinum group, a clean separation is not possible. For the non chemist - forget it. These metals are so much alike that they follow each other through the refining process. Palladium is soluble in nitric, platinum is not. This would lead one to conclude that a simple nitric boil will remove all the palladium from a Pd Pt mix. But not so. Even after full nitric boil for hours, there will still be some palladium left in the platinum and some of the platinum will be in the palladium. The only process that I know of is a bromate hydrolysis, developed by Raleigh Gilcrest. Impure platinum sponge is dissolved then a saturated sodium bromate solution is injected slowly. The bromate forms metal hydroxides of other PGMs, if present. Platinum, not forming a hydroxide, is left in the mother liquor, and can then be precipitated making very high purity platinum sponge.
@@sreetips Cool! Being a chemist trained to high school levels.... for me... forget it lol This is a cool subject and one I find highly interesting though. I do realise a rudimentary internet search won't cut the mustard, but it is interesting we both mentioned sodium bromide. What do you think of TBP for iridium extraction? I remember you using DHS once to extract palladium from platinum in one of your videos (wasn't it?) I know chloridising would be pretty much out of the question without some serious kit and safety equipment. Holding a chlorine atmosphere would be highly dangerous enough on its own, using the chlorine atmosphere to process platinum group salts would take it to another level altogether.
Can you not inquart molten platinum with copper ?. Treat it like gold because you said aqua regia will not penetrate gold unless it is inquarted with copper or silver.
Nitric won’t penetrate gold unless it’s inquarted with silver. Alloying copper with platinum to “inquart” the platinum like gold has never been tried. But my guess is that it would work very well.
@@sreetips now we wait until you have enough platinum scrap to do a refining lol. Thank you for replying sir. Love your videos . Maybe one day you can do a series on how the big refiners purify metals. I'll pop the popcorn and enjoy.
I’ll have to dig up some pictures. My sponsor dressed me as a hooker. The ENC was Baby Huey. And the FCC was a French tickler. They got my charge book and froze it in a 5 gallon bucket of ice.
@@sreetips I won't be working with any acids & metals without a proper fume hood!! I thank you for instilling that into me for the last 2 and a half years!!
OK, but, what's a reation?I guess you paid the light bill, @ about $1,000.00 for circa10 grams of .999 platinum who needs to worry about keeping the lights on?
I was trying to recover gold and something went wrong and i don't know what to do are what happen i made some nitric acid with potassium nitrate and sulfuric acid i have some pix but i don't know how to send then but i can use some help
Michael, unfortunately there are so many variables that there is no way one could possibly diagnose your problem by looking at pictures. The permutations of the different combinations are incalculable.
I'm noticing some of these rings are cut. Were they picked up from estate sales? That's a bit creepy, they may have been cut off the ring fingers of the Deceased. Why Else would the rings have been cut? That's what they do at the morgue when they can't pull off the ring. Creepy.
Okay okay...but where the murch at?... im a need a Hoodie ... i have a collection going ...i have 45 hoodies from my favored streamers...so plz ..maybe some Periodic table ones ..sum like that
I prefer the voiceover narration actually. All the whirring of motors and the putter of vacuum pumps can be distracting AND it causes you to sound vocally strained talking over the noise. Just an observation... Always enjoy your videos.
So what did ew learn here? Platinum is hard to suspend/takes a stupid amount of acid/the time is ticking away and the metal has still not gone into suspension while the third batch of acid has boiled off ... you do not want to get platinum in suspension on your skin ... oh, and did I mention that it is really dangerous as in it could kill you? I wonder why not many people refine platinum then?
This was an experiment to see if I could do it. I’ve got some more platinum scrap jewelry. Probably do another video soon using hydrolysis. This was just a practice. I’m not an aspiring platinum refiner because it’s too dangerous. If not for the videos I’d just send it in to the refiner and take his 80% for the metal as-is. But I’ve found that there’s a segment of viewers who enjoy seeing ways to refine platinum.
Hello Sreetips! Have you checked out the new video from NurdRage? He explains how to recycle copper nitrate, recovering nitric acid and copper from it. It could improve on your waste processing and lower your nitric acid costs. th-cam.com/video/l8uQWibpRYk/w-d-xo.html
That’s cool. Fortunately I can get plenty of nitric acid and the copper in my waste bucket gets thrown out. Not to impugn his work at all. I just don’t have the time to devote to it.
@@sreetips No problem. Just thought it might help you optimize your processes. Also you could recover a bit of precious metals as "anode slimes" during copper sulfate electrolysis.
![[MPD직캠] 베이비몬스터 직캠 8K 'LIKE THAT' (BABYMONSTER FanCam) | @MCOUNTDOWN_2024.6.13](http://i.ytimg.com/vi/8qa-nm9bCLs/mqdefault.jpg)
"The stone broke so it must be hot enough" 🤣😆🤣🙃
The man. The legend. He’s back!
That ice cube pic 🤣🤣🤣🤣
Wonderful class, vibrant expectation at the development of the process Yes, you're learning but teaching at the same time. Good to see you're protected like an astronaut. That's also a valuable lesson.
Glad you're back! Well done! Small amount is good! Slow and steady.
Great beginning to another great series. After doing my stock pot and all my filters I've decided I am done with PGMs. The risk, time and expense is just not worth it to me. Now that I have thoroughly recovered all of the silver and gold, the remaining black sludge is all going to a refinery and I will happily take whatever they will give me. 99% of the Pd is from electronic scrap and I assume most of the Pt came with it so for me it is all just a waste by-product that I can sell off. Seeing as this is just a hobby for me I am not willing to risk my health nor keep wasting money on reagents or time on recovery any longer. Add to this that Pt is only around $35 CDN per gram and the choice was an easy one for me. With that said I would really like to have a nice shiny Pd button from what I have recovered to add to my collection but my time and money are better spent on silver and gold.
Thank you very much for continuing your ongoing experimentation and discovery with these series. At the very least you've help educate me on what I am not willing to do. :)
Agree, I’m doing to demonstrate the process. It’s dangerous
@@sreetips thank you I share all your videos but this demonstration is truly hats off
waaaaaaayyyy over my head. great job you done....
My day is made when Sreetips makes a video.
Excellent video of recovering PGMs, sir!
Mr. Sreetips,
You are truly a master at what you do. I wholeheartedly regret critisizing you a couple of months ago. I should have known to keep my piehole shut when it comes to what, and why people choose to sell things; total embarrasment on my part. That said, I thoughoroly enjoy all the videos you post! Not only are they educational, but show how dangerous these processes are to the leyman. I am happy you diddn't block me when I judgingly spouted off to you in the past and I am truly honored to view your videos. Thank you for the entertainment,
Paul.
P.S.
If you ever travel to Laos, look me up, I got a rack of BBQ. N. Carolina ribs waiting for you. ( gloves and respirator required as well.) 🤣🙈💥
Paul, No foul. We are good and I’m glad you enjoy my videos.
I really want to see you recover the metals from that scrap/waste bucket.
Stubborn stuff that Platinum. Gold and Silver certainly behave themselves a lot more. Very interesting. Thanks @sreetips.Looking forward to the end result. 👍👍
When I was studying geology, we called it a streak plate. Great content sreetips.
"Oh No. Not the dirt people" - Sheldon Cooper , "Geology is not a real science." - Sheldon Cooper
Have you ever watched The Big Bang Theory?
@@getprobed838 Thank God I'm an MD then. lol I've never watched Big Bang Theory. I'm recently retired, so I'll search it on Netflix or Roku.
Thanks for sharing
very nice video please make more videos of pgm refining!
Ow and you deserved a like.. I like youtube so I can watch people do stupid things I want to see and won't do myself :D.. Fun for real ..you are still one of my best watched channels.. I just like chemistry.
Can't wait for part 2 friend!
What is the black ring around the glassware from or more to the point why do you think if accumulated there
I'm not only seeing the danger of the PGM solutions as an issue, but also with the amount of time it takes to get just 11 grams of metal dissolved. The chief value of the video is that it demonstrates that platinum refining is profitable only as a full-time job and not as a hobby.
Since you have found that the scrap platinum dissolves so slowly in aqua regia, why don't you first alloy the scrap with silver (inquart), then pour the alloy into water to form high surface area castings? These castings could then be more easily dissolved first in nitric acid to remove the silver and then use aqua regia to dissolve the remaining platinum.
I’ve never heard of that technique
Love your videos, I've been watching a very long time. I had a joke for ya, $100.00 if you can tell me in this video how many times he says, "I have a beaker here"! Lol, I'm just kidding on the 100 deal lol, but love how you just always come up with more and much larger beakers all the time. :) Have a very awesome day and GOD bless you and your family and ty for your videos, they really are a blessing :).
PS; I used to watch your videos when they very first come out! I just can't take the waiting for part 2,3,4 and 5 and so on lol, so I'm waiting for all the series to be done before I watch, so I'm not going nuts waiting on the others :).
Most Platinum jewelry is either Plat\10%irid or Plat cobalt Iridium was used to give strength to the Platinum (I was a jeweler for 40 years)
YES! I was wondering, when you put the zink in the solution to cement out the platinum, is that also producing heat? There was some kind of white fume coming off of it.. Great video again and already looking forward to part 2!
Probably steam
Maybe it helps to grind the platinum into little splinters to increase the surface area. It takes forever to dissolve.
I have an old class ring that says platrium jonsil. I read its a combination of different metals. Any ideas about what materials were used?
That color could be from the Iridum that you know was in some of those metals i think. Couldn't it? I believe Iridum is that color when first disolved then can change color with time if allowed to sit.
New Video, Yes!!!
Let's see some platinum today!!
Yes how you doing I find what you do very interesting even though I'm just some dumb auto mechanic but I was curious where did the fumes go when they exhaust from your fume Hood
Outside. You wouldn’t pull your car in the garage, shut the door, start the car in the closed up garage. Same principle with the fumes from these reactions. Both would end up killing you.
Here's a basic question, how do you process the waste of acids? Thanks for the great videos.
Waste treatment.
is the black ring around the inside of that beaker just really fine platinum/palladium? if so, is there enough of it to warrant trying to clean it off and collect it along with the rest of it? and if it is how will get it off of there? all the rinsing didnt do much to it. so im guessing youd have to wipe it off somehow without it clinging to whatever you wipe it with. be interested to find out the method.
It should dissolve off in the next step
Hey sreetips why did you cement out the PGM with zinc and not just use AC to precipitate the pt and DMG for the pd what was the point of the zinc?
Before AC the weight must be determined to get 20ml per gram of pgm in solution - critical ratio for proper precipitation with ammonium chloride
Would 15% H2O2 and HCL dissolve the platinum any easier? Or maybe HCL and some Trichlor from the pool supplies?
Hot AR for the thin metal. HCl & H2O2 for the powder
Warning: you are about to watch extremely dangerous yet rad sh**
I have a few questions on the PGMs when it comes to refining and dissolving in aqua regia mainly separating rhodium from platinum. The material is alloyed together
The best route would probably be a bromate hydrolysis
@@sreetips awesome thank you for the info I have found a paper about "A Procedure for the Separation of the Six Platinum Metals from One Another and for
their Gravimetric Determination" this explains everything in great detail I was just missing that small piece of information
Why didn't you use distilled water during the first 2/3 of this process?
More metal than you started with? Team Sreetips for the win again!
What happened to stockpot two
part 7 ? I love watching your videos I Learn so much.
I got to a point that I only had a few grams of mixed black PGMs so I decided to save it until I accumulated some more. I’ll add it to my next stock pot series so I’ll have a good amount of metal to show for the work involved
You started with Platinum / Iridium . The zinc will drop out all the metal so you will end up with what you started with? How do you separate the Platinum from the Iridium?
Bromate hydrolysis
Hey Senior Chief. Remember you removed a piece of unknown metal just before dissolving, so that weight is missing from the initial 11.4 grams. Also, did you figure out what that mystery metal was? And as always, keep the great content coming!
I’ll have to investigate. This is all new to me
Awsome video
Sreetips, could you filter the black platinum metal and keep rinsing in the filter until it was clean? Maybe the vacuum filter? I finally understand about you not using the copper precipitate! I didn't realize it was contaminated with iron. Maybe sell it to the scrap metal people lol!
Possibly
@@sreetips yeah, I made that comment before I watched the rest of the video
Can you inquart platinum so that the left over sponge is easier to dissolve? That was some serious effort to dissolve whole!
I'd venture to say that unless Pt dissolves in molten copper, silver or gold, its high melting point likely makes inquarting it impractical.
You probably ended up with “more” metal not because you incorrectly measured your beaker initially but because you used the beaker for reaction after reaction and inevitably a couple grams of metals and solvents stuck to the sides
You don’t think it’s a bad idea to have the aqua regia solution at boiling considering you have precious metals dissolved in there? You might be losing some as vapors
That's advanced stuff.
I like the voiceover narration! You could develop narration scripts and use some good recording software to really make your videos pop! Great stuff!
Sreetips - you're starting to make PGM refining looks easy! The process in this video seems really clean which I'm guess reflects the level of expertise you've attained at this over the years. One quick question, do you know what those black PGM compounds actually are at the end? I was wondering if those are a bit heaver than elemental PGMs due to the additional atomic weight in the compound. As an example (and a real chemist please correct me on this!), if I take the molecular mass of Iron oxide Fe2O3 and divide it by the atomic weight of Iron (Fe) I get a ratio of around 2.85 - so am I right in thinking that is how much the weight of my Iron powder would increase by if I could turn it in to pure Fe2O3? (I realizing getting pure Fe2O3 may not be easy...).
Working on part 2 right now. Trying to get the copper and rhodium (if any) out with boiling sulfuric - scary. Your analysis sounds about right. But I’m not a chemist either. The black powder is metallic platinum, with some palladium and copper. Aqua regia won’t dissolve rhodium or iridium. But these metals behave strangely when alloyed with other metals. It’s all new. I’m learning as I go relying heavily on my experience with other refining adventures.
@@sreetips I'm glad you have the skill and knowledge to do this stuff relatively safely, but yeah I can imagine this gets pretty hair raising! I can see you work very hard to go slow and carefully with these processes - I can really appreciate that. I love to see these refining videos, but also like to see you keeping safe! Your warnings are also much appreciated!
Mr Sreetips, could you say what that "black powder" that sunk to the bottom after the zinc treatment is? Is that platinum oxide or platinum chloride ? I guess the black powder is chemically inert ?
That is metallic platinum. I could send it to the refiner and get paid for it just like it is
Why does it look black though? is it because it's porous and therefore reflects less light?
Yes
There’s other metals in there too. Other platinum group metals and high probability of copper. The copper will be a black powder also and indistinguishable from the precious metals. Any metal under zinc will cement out
Do you think you can get your little torch hot enough to Melt Platinum? the melting point of platinum is 3215F about 1267 degrees F hotter than gold. (1943 F) You might not be able to melt it in an open dish. My enclosed gold furnace barely melts copper, and it's maximum temperature is 1150c (2102F)
Hi oxy-acetylene torch can burns upwards of 6000 F.
I’ve melted platinum with my oxy/acetylene torch in a previous video. While it’s not the best gas to use (hydrogen torch is preferred) it will get the job done with small quantities.
Please tell us what is the saftey equipment you are using ? You can make video for it
While handling the hot solutions I’ve got heavy chemical resistant glove that go up past my elbows, a 3M P95 mask, and a face shield
Do you separate your filter papers by what you were refining?
Yes, I keep silver separate from gold and pgms
11:20 I suspect an intentional education, thank you it was worth its weight in platinum.
Hey sreetips love your content. I was wondering if in your next video you could show off and talk about the torch you use, type of tip, psi of oxygen you use, etc. You've shown off all your toys except your torch. Also wondering why you don't use propane or hydrogen instead of acetylene.
Sure, be glad to. I use acetylene because it’s what I learned with and I just tend to stick with proven apparatus and reagents. I’m the the kind who will order the same dish at a particular restaurant over and over because I know what I’m getting.
Not sure if you know how to but it would be great if you could make a video of how to make gold test acids .9k 14k 18k and 20k acids
Hi sreetips why don't you boil it in nitric to remove any palladium?
I tried that once. Platinum went with it.
@@sreetips ok I thought nitric doesn't dissolve platinum on its own ?
In fine blacks the boiling nitric will dissolve Pt. Also if the Pt is alloyed with 95% silver the nitric will dissolve everything
@@sreetips ok are you going to leave the pd in the solution or precipitate it out? Or add to the stock pot?
I add ammonium chloride to precip platinum. At that point I’ll add more than I need because the palladium MUST be infused with ammonium chloride to get it out. Ammonium chloride must be added to the palladium whether there’s platinum in there or not. It’s essential for the palladium refining
very informative lesson, sorry without subtitles
Does the black powder contain Pt & Pd & Rh or Rh not dissolve in AR ?
The black powder should be platinum, palladium, and copper. AR doesn’t dissolve rhodium or iridium. But working with PGMs is like a box of chocolates (for me) you never know what you’re going to get.
Thanks. I was wondering where the Cu went.
That pot you had the tap water in, I like it, wondering where you can get those?
Thrift store $5
@@sreetips I like it. Great videos also sir. Why I'm not comfortable with doing platinum, looking at how you've worked silver and gold, I have learned a lot from you. Great job 👍
Platinum is a whole different animal
@@sreetips Can't wait to see pt2
Is it possible to make pure platinum the same way you use electricity to make pure silver crystal?
Yes, but I’ve never done it
Why did you wet the filter paper and rinse the flask with HCL for this refinement process?
Sometimes plain water will form compounds
@@sreetips thanks!
If I were you I keep those filter papers with your undissolved platinum and throw them in your optional next refining cause there is toxic ChloroPlatinum salt in it..when they dry up it will become hazardous dust.
I noticed you even took a piece of material out of the amount material to refine after you wieghed the material so the resul tbeing off is even bigger than you thought.
You can weigh that beaker after you cleaned it again and check if you did that wrong.
also about 10% of the weight should be in your fiilter papers if the markings on the yewelry are correct.
Just got off work and what do you think my chances of getting a fresh Sreetips video.
Are you wearing a respirator?
Sorry. I asked too soon... Of course, you are wearing one.
not sure if you caught that but you said "Niner" while reading out the weight :)
I know why but many will not know why.
thanks for another great video !
he forgot tree though
Its not likely to be Iridium that's floating on the liquid Osmium and Iridium have the highest densities of any elements in the periodic table.
Some things only need to be done once.
Maybe some contamination in the zinc slug?
My same thought....he had extra metal that wasn't even dissolve during the initial process which means he was actually at less than the original 11.4g he started with, so it must've come from the Zinc somehow.(unless sreetips really screwed up and mis-weighted his beaker somehow, which I find highly unlikely given his attention to detail 😊)
I’m quite certain that all the zinc has been removed. I’ll investigate today when I do part 2
Iridium does NOT react with ANY acids you have. It will literally only be dissolved in molten cyanic salts. Other precious metal impurities like ruthenium and rhodium will also not react with Aqua regia. Palladium however, as well as copper and cobalt (other uncommon impurities) will readily dissolve in aqua regia immediately
Psst... hey Senior Chief. Twist the metal BEFORE you cut it. Save some time there. Love the content. Keep up the good work.
It appeals to my meticulous nature
@@sreetips I respect that.
Isn't iridium radioactive?
I don’t know, if there’s uranium in with it, probably
Quick read on duckduckgo: Ruthenium separated by adding sodium bromate and distilling. Palladium separated by adding di-n-hexyl sulphide (DHS). Iridium separated by using tributylphosulphate (TBP), not sure exactly how it works. Rhodium most difficult to separate, suggestion was to chloridise, roast and then leach the salt, again not sure exactly how that works.
The above seems to require some serious NileRed style kit.
Feel free to chime in anyone.
For a trained chemist not familiar with separating the six sister metals in the platinum group, a clean separation is not possible. For the non chemist - forget it. These metals are so much alike that they follow each other through the refining process. Palladium is soluble in nitric, platinum is not. This would lead one to conclude that a simple nitric boil will remove all the palladium from a Pd Pt mix. But not so. Even after full nitric boil for hours, there will still be some palladium left in the platinum and some of the platinum will be in the palladium. The only process that I know of is a bromate hydrolysis, developed by Raleigh Gilcrest. Impure platinum sponge is dissolved then a saturated sodium bromate solution is injected slowly. The bromate forms metal hydroxides of other PGMs, if present. Platinum, not forming a hydroxide, is left in the mother liquor, and can then be precipitated making very high purity platinum sponge.
@@sreetips Cool! Being a chemist trained to high school levels.... for me... forget it lol
This is a cool subject and one I find highly interesting though. I do realise a rudimentary internet search won't cut the mustard, but it is interesting we both mentioned sodium bromide.
What do you think of TBP for iridium extraction? I remember you using DHS once to extract palladium from platinum in one of your videos (wasn't it?)
I know chloridising would be pretty much out of the question without some serious kit and safety equipment. Holding a chlorine atmosphere would be highly dangerous enough on its own, using the chlorine atmosphere to process platinum group salts would take it to another level altogether.
It is possible to dissolve platinum without acid, so isn't so much dangerous
Hope you had a good Thanksgiving
Thanks, I was making rather merry with my family
Can you not inquart molten platinum with copper ?.
Treat it like gold because you said aqua regia will not penetrate gold unless it is inquarted with copper or silver.
Nitric won’t penetrate gold unless it’s inquarted with silver. Alloying copper with platinum to “inquart” the platinum like gold has never been tried. But my guess is that it would work very well.
@@sreetips now we wait until you have enough platinum scrap to do a refining lol.
Thank you for replying sir. Love your videos .
Maybe one day you can do a series on how the big refiners purify metals. I'll pop the popcorn and enjoy.
master. can we work with non-concentrated acid
I work with dilute acids all the time
For aqua regia you can only use concentrate I think
Is the time based solely on surface area
Yes
Doesn't gold also stay bright and shiny after heating
No, it will discolor
I believe you are a retired CPO right? I too am a member of the Mess and enjoy your channel immensely.
I was one of the last to go through the real initiation
I too, am a initiated and proud of it Goat. I believe the new selectees, just announced Thursday, will be doing the whole process on line. Very sad.
I’ll have to dig up some pictures. My sponsor dressed me as a hooker. The ENC was Baby Huey. And the FCC was a French tickler. They got my charge book and froze it in a 5 gallon bucket of ice.
I'm highly interested about increasing the amount of platinum while refining. Please, could you share the trick? ;-)
When I find it I’ll share it
PGMs are a seriously scary metals to work with!!
You've been at this for a long time and even try to stay away from it!!
Have a Great Day My Friend!!!
Gold refining without a fume hood is dangerous. Platinum refining with no fume hood is out of the question
@@sreetips I won't be working with any acids & metals without a proper fume hood!!
I thank you for instilling that into me for the last 2 and a half years!!
WHAT WAS THE WEIGHT OF PLT.
Hi Sir, can you recommend me where I can buy a ceramic cpu processor from a real seller sir? Can you inform me if you know sir? Many thanks sir
I bought mine on ebay
@@sreetips yes but ebay is not many sir, and the price is so high, actually many in website sir, and so cheap, but I stay away from scam and fraud
OK, but, what's a reation?I guess you paid the light bill, @ about $1,000.00 for circa10 grams of .999 platinum who needs to worry about keeping the lights on?
I was trying to recover gold and something went wrong and i don't know what to do are what happen i made some nitric acid with potassium nitrate and sulfuric acid i have some pix but i don't know how to send then but i can use some help
Michael, unfortunately there are so many variables that there is no way one could possibly diagnose your problem by looking at pictures. The permutations of the different combinations are incalculable.
How is cobalt in solution handled?
I’ve never encounter it that I know of
@@sreetips i cast 950 ptco daily, its beating out ptir and ptru.
Keep an eye out.
I'm noticing some of these rings are cut. Were they picked up from estate sales? That's a bit creepy, they may have been cut off the ring fingers of the Deceased. Why Else would the rings have been cut? That's what they do at the morgue when they can't pull off the ring. Creepy.
We cut them off the living at the jewelry shop all the time. The emergency room charges $500. We charge $5
Platinum in solution causes greyscale then?
I’ve never heard of greyscale
@@sreetips Its a fictional skin condition from Game of Thrones that is usually deadly in the show.
@@jesseblackhawk gotchee
the solution looks like stout.16:50
Mark pt 850,900,950 ?
I’ve seen platinum marked 950
Video da neden alt yazi yok ?
First!!!
I never knew that platinum is a non oxidizing metal
Wanna tell you why you didn't know? Because it is not.👏 It's resistant, but not immune to oxidation.
Little harder than gold.
Okay okay...but where the murch at?... im a need a Hoodie ... i have a collection going ...i have 45 hoodies from my favored streamers...so plz ..maybe some Periodic table ones ..sum like that
Switch to Fluora regia with Hydroflouric acid its more powerful.
That would dissolve my beakers!
@@sreetips get some aluminium beakers. I think it wouldn't attack aluminium because it gets passive
I prefer the voiceover narration actually. All the whirring of motors and the putter of vacuum pumps can be distracting AND it causes you to sound vocally strained talking over the noise.
Just an observation...
Always enjoy your videos.
I like the voice track on the videos better than having to yell at the camera
Whats the point of refining it? Its already pretty pure. Just sell it.
"COOPER" .___.
So what did ew learn here? Platinum is hard to suspend/takes a stupid amount of acid/the time is ticking away and the metal has still not gone into suspension while the third batch of acid has boiled off ... you do not want to get platinum in suspension on your skin ... oh, and did I mention that it is really dangerous as in it could kill you?
I wonder why not many people refine platinum then?
This was an experiment to see if I could do it. I’ve got some more platinum scrap jewelry. Probably do another video soon using hydrolysis. This was just a practice. I’m not an aspiring platinum refiner because it’s too dangerous. If not for the videos I’d just send it in to the refiner and take his 80% for the metal as-is. But I’ve found that there’s a segment of viewers who enjoy seeing ways to refine platinum.
Hello Sreetips! Have you checked out the new video from NurdRage? He explains how to recycle copper nitrate, recovering nitric acid and copper from it. It could improve on your waste processing and lower your nitric acid costs. th-cam.com/video/l8uQWibpRYk/w-d-xo.html
That’s cool. Fortunately I can get plenty of nitric acid and the copper in my waste bucket gets thrown out. Not to impugn his work at all. I just don’t have the time to devote to it.
@@sreetips No problem. Just thought it might help you optimize your processes. Also you could recover a bit of precious metals as "anode slimes" during copper sulfate electrolysis.