I have never been into metal refining but the videos Sreetips makes scratches that itch I have to learn something . He's clearly educated but he doesn't try to flaunt his education by trying to use nothing but scientific wording to explain what he is doing. He makes it clear and easy to follow for everyone . If you're not into this kind of video then you just aren't going to be but he does make it easier for some to follow and understand what is happening . He also doesn't try to hide mistakes he shows what happens and why so maybe it will help others avoid making the same mistakes. Thanks for putting all the time and effort into making these videos it is greatly appreciated.
@T-Rod423
Жыл бұрын
Sreetips, you’re fantastic. I, genuinely, hope the effort you into filming your videos is worth it to you to make it worth your while. I’d love for you to be rich off KZitem money because you “entertained” (taught) me with your effort - making us videos. Proud of you. Keep it up forever!
@Halloween111
Жыл бұрын
"Scared to stick my hand down in there to get a sample of it" That's not fear...That's wisdom. Another great video Sreetips. I munch popcorn like I'm at the movies with your vids.
@jacobv_
Жыл бұрын
Because of you, I've started scouring goodwills for silver. Haven't found much golf for cheap, but I've gotten some very cheap silver - about $160 of sterling for $20. Plan is to get a silver cell going once I've scavenged enough silver!
@kenb8773
Жыл бұрын
I'm the same, more interested in the silver cell, i have found 3 silver spoons so far! 🤣
@Antonowskyfly
Жыл бұрын
Fantastic continued demonstration. Thank you Sir! If the damage to the workhorse was due to the blow from the zinc plate…it fought a valiant final battle and brought the troops home. Definitely in line for the colloidal silver heart medal. All joking aside, your voice of reason is appreciated. 👍👍🤟
@joshuawhited547
Жыл бұрын
That was an awesome reaction when the zinc was dropped in the beaker ! Thought it was going to erupt there for a second. Pretty cool video!
@sreetips
Жыл бұрын
Me too!
@engelhoarder4481
Жыл бұрын
Sreetips always bringing the knowledge ! Thank you very much sir !
@shaneyork300
Жыл бұрын
Thank you for labeling the beakers! It's better & easier to watch!!
@sreetips
Жыл бұрын
Good to know. Thanks for the feedback Shane
@fancydeer
Жыл бұрын
"Well... there it goes" got me. 🤣
@gonetroutfishing
Жыл бұрын
Gooood evening from central Florida! Hope everyone has a great night! Absolutely enjoy your series content! Thanks for sharing!
@LiborTinka
Жыл бұрын
To get a sample, just touch it with a long glass stirring rod, then on your test paper. As for the sulfuric, people often use ~64% stock solution (chamber acid) - it's still pretty concentrated (about 10M) but not as viscous and does not heat up so much by dilution as most of the acid is already dissociated and exists as bisulfate. Some people use sodium bisulfate solution for neutralizing basic waste solutions as this is cheaper than sulfuric, can be stored in solid form and we don't worry about the sodium contamination (waste solution).
@barthanes1
Жыл бұрын
That red ring of material is very beautiful.
@nicholasb8799
Жыл бұрын
"I am not going to stick my hand down in it" - Everyone watching - "Good idea"
@TheNursejules
Жыл бұрын
Your channel just reminds me of how awesome science is!
@noneyabidness9644
Жыл бұрын
Glad you've recovered.
@tonyquark493
Жыл бұрын
Great video and very informative!
@hannable3871
Жыл бұрын
This is great I was just watching old videos
@josephschnabel1andonly
Жыл бұрын
Im digging this series
@budgiebreder
Жыл бұрын
I would have missed that crack and had a really bad day with acid everywhere. Im glad you have a keen eye!
@MakingUsThink
Жыл бұрын
You give meaning to every bit counts, 😁
@MK-tx1nd
Жыл бұрын
if you neutralize the majority of the acid before the reduction step (zinc), you can save a great deal of reducing agent (zinc). If you then use copper as the reducing agent, you should be able to precipitate the noble metals (platinum group and gold), without the need of boiling the precipitate with sulfuric acid, thus saving you the trouble, materials and money.
@williamfoote2888
Жыл бұрын
I agree on ‘neutralize it first’ but he’s reducing the PGMs with Zn to knock the Cu down, for extraction OF the Cu. At this point, if he’s laid up all his Rh on the glass, his Cu is all dissolved in the supernate, I’m waiting to see where he goes from here. Pouring off the supernate and rinsing the glass means that he’d leave the Pt behind, but he’d have Cu contaminated Rh. Waiting for Ep 3!
@keithwilliams9213
Жыл бұрын
what would you use to neutralize the acid if you can't use water?
@sreetips
Жыл бұрын
These metals tend to follow each. I’m betting that the sulfuric put some platinum and palladium and copper in solution.
@williamfoote2888
Жыл бұрын
@@keithwilliams9213 sodium hydroxide. Sodium carbonate. Both are cheap. He used Zn metal. Instead of having a solution of Zn(NO3)2 and his metals, it’d be a solution of NaNO3 and his metals. When the pH gets close enough to 6, add the Zn, to cement out the metals. Gold mines use Zn powder for its surface area. When the cementation is done, the supernate should be clear.
@keithwilliams9213
Жыл бұрын
@@williamfoote2888 thanks!
@user-hs9sp1ro4m
Жыл бұрын
Круто!!! Супер!!! Чекаю з нетерпінням продовження!!! Гаряча сірчана кислота це дуже страшно і небезпечно! Як завжди величезний лайк!!!
@pendulumrulez
Жыл бұрын
Thanks for the video Mr. Sreetips
@whatthefunction9140
Жыл бұрын
hellz yeah. sreetips lay'n it down
@mattgraham1983
Жыл бұрын
Pump those views for the Christmas bonus 😂
@ColonelH
Жыл бұрын
I'm shocked at how much Gold you recovered. So much to take in in this video, will watch twice.
@AndyGraceMedia
Жыл бұрын
Certainly looks like rhodium. The mixed metals filtrate solution certainly had the distinctive red colour of rhodium. We saw rhodium chloride as a precipitate in one of those filter papers a while ago, so it would make sense, but also progressive refinings of filter papers to get out the Ag, Au, Pt, Pd and then storing the filter papers would have concentrated any trace amounts of Rh which would have been used as protective plating on some of that old scrap. Boiling in concentrated H2SO4 should have created some rhodium sulfate salt, or maybe some weird complex but the rose colour is a dead giveaway. I want to see Rh compounds in your eBay store - starting price $1000/gram.
@TeslaFactory
Жыл бұрын
It wouldn't be Cobalt Sulphate, would it? That would be a red salt too
@williamfoote2888
Жыл бұрын
@@TeslaFactory hexahydrate is pink, but coming out of boiling conc H2SO4, having that come out of solution is unlikely. As noted previously Rh is flashed over gold quite often, so, yeah. I’d go with Rh, too. Cobalt isn’t usually associated with jewelry.
@sreetips
Жыл бұрын
I’m clueless
@sreetips
Жыл бұрын
I’m in complete darkness and I don’t know what to do next. I took the day off to research what I need to do next. And to get away from it for a day. Getting the rhodium will be a real treat if I can pull it off.
@AndyGraceMedia
Жыл бұрын
@@sreetips Very tough. Because you were super brave and boiled in that near azeotropic H2SO4 , it's more than likely that is the crystalline Rh(III) sulphate salt. My thought is boiling for that long would have concentrated the acid even slightly more as you can see from the mist (which I find rather scary!) So the crystals would be partly dihydrate but also partly the anhydrous salt which is kind of unusual for any noble metal. Maybe remove as much of the precipitate as you can and dissolve in double-distilled water. I know it's used as the electrolyte in industrial Rh plating. I'm guessing it'd be much easier and a bit safer to use the fact rhodium is mostly insoluble in aqua regia as you've seen already, then if you filter and boil in HCl, it forms the trichloride salt and complexes. Yield? No idea, not great I'd guess but the salt could then be heated to liberate chlorine gas and you're left with the metal. Disclaimer: it's been a long time since inorganic chem at university :)
@chanheosican6636
Жыл бұрын
Nice video your videos are very impressive and inspiring. Large amounts of copper well you can cement the copper and other metals out.
@davidmccleary5540
Жыл бұрын
Great show. Very interesting
@tonydalton6756
Жыл бұрын
I've watched loads of our videos & wouldn't know where to begin with these problems. I can't wait to see your solution.
@sreetips
Жыл бұрын
I’m stumped. Had to get away from it for a day.
@kriskemp4952
9 ай бұрын
Such cool vids
@ruffanuff
Жыл бұрын
Awesome aggressive zinc reaction...was on edge of seat.😅
@ze90s
Жыл бұрын
great video, thanks
@floydsallee2041
Жыл бұрын
Love it street tips
@inglbrute
Жыл бұрын
Juicy info on testing methods there, thanks for that. Although I probably won't ever progress that far. I just do a little small scale electronic and gold filled material recovery Now and then. Man, that sulphuric acid is angry, nasty stuff tho. I'll stay away from that as much as possible.
@mattgraham1983
Жыл бұрын
Whoops there she goes 😬 😂😂 dam it 🤔
@hobbiesrus
Жыл бұрын
What a mess! You go for it, Sreetips!!
@burriedhistory
Жыл бұрын
One more LIKE for you. 👍👍👏👏
@scotthultin7769
Жыл бұрын
17👍's up thanks sreetips thanks for sharing your Great Hobb with us all
@jwrappuhn71
Жыл бұрын
Excellent.
@dk7863
Жыл бұрын
Nice!🎸
@scottindestin4292
Жыл бұрын
Gonna sit here and wait for part 3.
@Joe.Rogan.
Жыл бұрын
Haha I always wondered how the fume hood got to looking like a Jackson Pollock painting.. when that sheet of zinc dropped it all made sense.
@christopherleubner6633
7 ай бұрын
Treat your filter papers with nitric acid and sulfuric acid. Then they will take hot acidic solutions and filter well. Also makes them easy to burn off when the time comes to recover metals on them. ❤
@rogerfleury3591
Жыл бұрын
77th! It’s exciting to watch gold and other precious metals magically appearing out of liquid sludge. Roger in Pierre South Dakota
@FollowMe2aMillion
Жыл бұрын
Nice catch on the crack, Bravo Zulu Master Chief!!
@scrappydoo7887
Жыл бұрын
Cool, I don't think I have ever seen a rhodium recovery on yt before 👍
@sreetips
Жыл бұрын
Probably never will. Folks who know how to get rhodium are not eager to share their secrets with the masses.
@scrappydoo7887
Жыл бұрын
@@sreetips that sucks. I think I might have to have a conversation with a few of the hardcore chemistry lovers to see what I can find out.
@Myth_Incarnate
Жыл бұрын
That much boiling sulphuric acid terrified me. And I've done work with fluorine peroxide. 😱
@apveening
Жыл бұрын
In that case I suggest you read up on FOOF.
@abc-coleaks-info3180
Жыл бұрын
@@apveening “Satans Kimchi” the only thing that reacts more violently to ice then I do! Lol😂
@disgruntledtoons
Жыл бұрын
I looked at the spot price for rhodium. That stuff's definitely worth chasing down if you have enough to weigh..
@petterandersson7429
Жыл бұрын
Stay safe.
@gratshor
Жыл бұрын
You also can remove only Copper by 1/3 dilute Sulfuric acid or 70% acetic(vinegar) acid with slowly adding 3% to 15% hydrogen peroxide or bubbling air/oxygen through solution. It takes 6 to 24 hours without heating highter than 40°C. I removed this way (36% H2SO4 + 3% H2O2) copper from incinerated old PCB's with silver plating. As result i collect silver foils what melted in to button almost sterling purity (about 900, most impurities followed from solder) Concentrated sulfuric acid passivate copper with layer of copper sulphate (poorly soluable in acid.
@xX0IRIDIUM0Xx
Жыл бұрын
Wow one of my fav metals. Take that rhodium sponge and strike an arc above it. I wanna see a rhodium button.
@hattricksprospecting1769
Жыл бұрын
My new Lab Sign "Say No to Sulfur Fumes!"
@rmbflk
Жыл бұрын
The stock pots are now running on a solera system! :-)
@beauhodges7957
Жыл бұрын
You've got me wondering if starting with the sulfuric acid to remove the copper instead of nitric acid would have worked better.
@MegaPrefab
Жыл бұрын
wooohooo
@MADDLADO1
Жыл бұрын
We're watching you
@Camelguy069
Жыл бұрын
Two in one day!
@robertallison9653
Жыл бұрын
Platinum!
@mr.g-sez
Жыл бұрын
17:25 what a vigorous reaction. maybe zink instead of copper is the better(much faster) option to cement out pm's in waste or stock pot solutions?!
@bfd1565
Жыл бұрын
Can we please have part 3 of your refining stock pot video this evening?
@sreetips
Жыл бұрын
I haven’t touched it in four days. Been too busy. Wedding on Sunday. Might get to it on Monday.
@edouble76
Жыл бұрын
Interesting, thanks to your explanation and experiments. The question that still lingers for me. What is the best way to retrieve the valuable metals from the unwanted materials it may be adhered to? Incineration or chemical? This is before separating the individual metals accordingly.
@sreetips
Жыл бұрын
I don’t know.
@KD0CAC
Жыл бұрын
I wonder if the crack in more of an etching of the glass from the zinc / acid reaction - where cracks start ? Thanks again
@johannsigurarson3646
Жыл бұрын
The only mistake I've ever seen you repeat is filtering a hot solution. The 'unfamiliar territory' videos are my favorite though.
@themakerken3453
Жыл бұрын
Slow is smooth, smooth is fast
@darkhorsegarage9623
Жыл бұрын
Watching these videos the viewer does not get a sense of how powerful these chemicals are. They all look like water. But one drop of sulfuric acid on your skin will get your attention quick. When that zinc went in to the solution it showed how strong it is. Then there is the smell.
@ver2cal2010
Жыл бұрын
“Time to do it right no time to do it twice” random sign at work
@Enjoymentboy
Жыл бұрын
Another great video. Looking forward to the rest of the series. Another great reminder to me why I don't want to mess with PGMs any longer. Now, I cement out the copper and leave the slimes in the bucket. I've melted it all down into small bars and I'm planning on running them through an electro-cell. Doing this one a bit differently though and I'm employing the 1L beaker setup for silver you showed us so long ago. But instead of letting the bars sit int he filter basket I'm planning on hanging them in it so any residues are captured by the filter cloth instead of dropping to the bottom of the cell. And since the bars will hang I am hoping this will reduce the amount of copper that drops down with the rest of the slimes. Mainly this is just a proof of concept test to see if it works. I would MUCH rather clean up the PGMs without chemicals if I can go that route. I know right now I am sitting on at least 30gm of various precious metals in my stockpot residues and that's all been melted with a little over 1kg copper. My hope is this will also remove any iron contamination as well.
@williamfoote2888
Жыл бұрын
You really can’t beat the simplicity of Sreetips’ stainless bowl for a cathode design. The coffee filters are a really good compromise containing the slimes and letting the Ag ions diffuse out. I think that you’re trying to reinvent the wheel.
@Enjoymentboy
Жыл бұрын
@@williamfoote2888 I hear you. My main issue is I cannot get nitric any longer. I have to make my own and it is WAY too expensive to use freely. Not to mention I have very limited days & time to do it (have to distil in the back yard). Best prices I can get for the supplies I need give me a final nitric cost of around $40 per litre. I figured that since the 1L beaker cell that Sreetips made a while back worked for silver (I know it does because I built one). With a little modification it should work well for copper as well and help separate the metals electrically. TBH I am not modifying the design at all. More that there is a slight change to how the anodes are installed. Instead of sitting in the basket they'll hang over it but the overall design won't change. Already have multiple kg of CuSO4 (made from my refining wastes) and that will be my electrolyte. But seeing as my wants/needs are slightly different than Sreetips' it would stand to reason that a little change in plan might be needed. Honestly, if I didn't want the copper things might be different but part of my goal is to minimise all waste as much as I possibly can and this will help a lot. And to paraphrase Sreetips "I'm not really following an instruction manual here. this is just an experiment and I'm doing this by the seat of my pants". I enjoy figuring stuff like this out as much as I do the whole refining part.
@williamfoote2888
Жыл бұрын
@@Enjoymentboy I’m impressed by you and Sreetips!
@masternater6721
3 ай бұрын
another outstanding video. thank you. still, i am curious. why choose to precipitate with zinc, and not precipitate out PGM & gold using copper? would it not leave the copper in solution, while precipitating out the desired metals?
@sreetips
3 ай бұрын
Zinc is much faster.
@denverd2007
Жыл бұрын
Looks like another crack in the beaker on the side. Between the bottom of the rose colored ring and the liquid level
@bitsofeverything8385
Жыл бұрын
A toothbrush glued to a stick would maybe do wonders for such sticky situations, would surely get stuck to it a bunch too tho.
@grant9860
9 ай бұрын
hind sight is 20/20
@josephcormier5974
Жыл бұрын
Mr sreetips would it have been easier to drop the gold with iron sulfate and then proceed with the rest just wondering excellent video ounce again thank you for sharing five stars my friend
@sreetips
Жыл бұрын
Possibly, but then I’d have iron in solution
@philbartoli2011
Жыл бұрын
Zinc drop had me worried for a second
@sreetips
Жыл бұрын
Me Too
@gyvren
9 ай бұрын
19:50 Almost looks like a Guinness cascade… 😎 Don’t drink that… 😉
@saronabashti6495
Жыл бұрын
👍👌😉❤️
@chuckcrunch1
Жыл бұрын
i thought copper metal reacted with sulphuric acid very slowly even in a finely divide state due to it pacifying . maybe grinding and then heating the black mass to above 300 C in air to get the copper to oxidise some. may help accelerate the process
@dnrjentertainment4204
Жыл бұрын
I am seeing a vicious cycle with no end in sight.
@sreetips
Жыл бұрын
Me too
@hannable3871
Жыл бұрын
Mr. SREETIPS another question for you have you ever thought about using a bubbler in your silver cell to keep things stirred?
@sreetips
Жыл бұрын
No
@buttersstotch6752
Жыл бұрын
Even professor honeydew had a few beeker problems now and then.
@johanhaukeness9492
Жыл бұрын
Don't forget to change the oil in your vacuum pump 😉
@sreetips
Жыл бұрын
Take of your equipment and your equipment will take care of you
@davidhope5875
Жыл бұрын
Does the jeweller have an XRF tester? You could melt the black powder into a button and find out exactly what was in it before you start refining.
@sreetips
Жыл бұрын
No, he doesn’t.
@billiehydrick6417
Жыл бұрын
What do you think about platinum spark plugs is it worth getting ..your opinion please
@sreetips
Жыл бұрын
I don’t know their platinum content. I’ve never worked with them
@fredhebert8592
Жыл бұрын
I like your videos I have a question for a newbie a beginner can you recommend any place we can get or whatever we need to start doing this refining project like beakers etc get back to me I like to know thank you
@sreetips
Жыл бұрын
Fred, a fume hood because there’s no way to safely do these reactions without a fume hood
@Sarcastimus
Жыл бұрын
Honest question here: Wouldn’t silver be a better choice (rather than zinc) to precipitate the PGM’s/Gold since it would leave the copper in solution?
@royalrefining6182
Жыл бұрын
No because the silver wouldn't go into solution. It'll either passivate or precipitate as silver chloride because of the hcl content
@sreetips
Жыл бұрын
We want to keep silver away from our gold and platinum group metals.
@the1dud
Жыл бұрын
Did I hear Rhodium?!?! PGM ftw!
@nastydave6334
Жыл бұрын
The silver cell fascinates me, I was thinking would it be possible to do something similar with gold? Does it also crystallize?
@sreetips
Жыл бұрын
Yes
@OneOfDisease
Жыл бұрын
is it the acid that is thick and viscous or is it other chemicals they add to drain cleaning solution that makes it thick to help with the unclogging process?
@apveening
Жыл бұрын
Concentrated sulphuric acid is thick and viscous, no other chemicals added for drain cleaning.
@sreetips
Жыл бұрын
Lab grade sulfuric is thick. The drain cleaner looks like ACS reagent high quality acid.
@jaimeortega4940
Жыл бұрын
Sreetips what is the gas emitted using the zinc? In aluminum reactions I'd done in the past they emitted copious amounts of hydrogen gas. Similar with zinc?
@sreetips
Жыл бұрын
Probably hydrogen
@stevepratley
Жыл бұрын
Great video as always but damn son, did someone challenge you to see how many times you could use the word solution in a video?!!
@sreetips
Жыл бұрын
Yes, but I didn’t make it to the estimated number of times.
@gossman75
Жыл бұрын
I'm wondering...How much is one of those beakers for replacement.
@sreetips
Жыл бұрын
About $30 each, plus shipping
@gossman75
Жыл бұрын
@@sreetips Definitely cheaper than I thought. Keep up the good work!
@fredhebert8592
Жыл бұрын
Approximately how much would a hooded fan cost roughly p
@sreetips
Жыл бұрын
I paid $250 for mine twelve years ago. Plus $250 to ship it.
@wethepeople7961
Жыл бұрын
Thank god for 1.75 x normal speed video play back
@quintonharvey1501
Жыл бұрын
Does the zinc drop with everything else or stay in the acid
@sreetips
Жыл бұрын
The zinc goes into solution as the precious metals precipitate out of solution.
@DFPercush
Жыл бұрын
Look up "solubility of zinc chloride". Since he added excess zinc, that probably consumed all the acid, so you probably want the number for water as a solvent. If only a small amount of zinc is added then you may want the value for concentrated HCl. As it turns out, it does dissolve very well in water, so it can be rinsed away.
@hpdepasse5997
Жыл бұрын
if you use silver (pure silver from the cell) instead of zinc, you will precipitate gold, PGM and Pd but not copper ? and then, no need to proceed with sulfuric.
@sreetips
Жыл бұрын
We want to keep silver away from our gold and platinum.
@dawnjennings4864
Жыл бұрын
How much is one of those beakers?
@sreetips
Жыл бұрын
I just bought two new ones. They were about $25 each.
@firefox2716
Жыл бұрын
Hello What temperatures do your liquids need to be , do the solutions have to be deluded before a perticpate drop ?
@mouserr
Жыл бұрын
all things considered its best to just retire that beaker and get a new 1, chancing life and limb on once compromised glassware when lethal chems are to be used is never a good plan
@sreetips
Жыл бұрын
Gold drops better from a dilute solution. PGMs drop better from concentrated solutions.
@firefox2716
Жыл бұрын
@@sreetips Thank you sreetips, not sure how good a pH digital tester works , but if you tried one, let me know...Thank you for reply
@hyzaar99
Жыл бұрын
Haven't you cracked a beaker just like that before by putting it on the heat with no liquid in it?
@sreetips
Жыл бұрын
Yes!
@garymyers6638
Жыл бұрын
How do you get the zinc out of solution to use again, or is it waste
@apveening
Жыл бұрын
That zinc is waste (slightly toxic at that).
@sreetips
Жыл бұрын
The zinc is waste
@gossman75
Жыл бұрын
The Rose material make me think that it's the copper
@sreetips
Жыл бұрын
I tested with stannous - it’s not copper. But I’m stumped on how to proceed
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