-That white gold in your 14k portion is Rh plated. -You could use the Au electroplated material to inquart. The Au is plated on brass, which is Ni and then Au electroplated. Just assume that all the electroplated weight is 'inquart.' You'd be adding in the same Cu and Zn that's part of your Au filled material. -That junk metal is 'brass' or 'Zn diecast', that is zincate immersion (Na2ZnO3) coated, Cu flashed, Cu plated, Ni flashed, then Au flashed. Zn is just as useful to inquart as Cu or Ag. It all comes out when you do your HNO3 boils. -The material at the bottom of your melt dish is likely stainless steel. -I'm surprised at how little slag you have floating on top. That'd be your Zn or maybe Pb oxides. Looks like they might have been rinsed out into the drain when you spatter cast your melt into the cooling water tank. -The activity series isn't going to predict reactivity with acid. If anything, the reaction you got would be from the amount of Cu and Zn in the inquarted gold. Whatever Zn you add to your process will pas all the way through to your final Fe waste stream and be discharged in any liquid supernate. -Jeez. I didn't even consider Sn. -That white sediment on the bottom of the beaker, after the HCl boil, is your PbSO4. -Double, triple or even quadruple up on your filter paper for the Buchner funnel. In the old days, we'd use an asbestos fiber filter mat. I'd think you could use an activated carbon layer on top of the filter papers to help you get your clear solution. Of course, you'd need to add the carbon to your filter paper stash for later metal recovery. Yes, the filtration step will be slow, but less sensitive to high pressure vacuum. That IS nice Au! Long road to well done!
Mr. Foote. Thank you for the lesson of the day. You answered my ?’s and I’m sure some of SREETIPS’ as well. Keep posting here please. I’ll be watching for my next lesson sir. 😊
Beautifully done. Stepping into something new, having it act in a very unexpected way, and you made the great save. Thanks for sharing. Steady wins the race.
It would be cool to see a video explaining the cost to profit ratio. Like how much you spend on chemicals, electricity, and metals compared to the value of the finished product.
I believe it is negative. The scrap metal cost is fixed at scrap value. The refining costs are expensive. If you add up the two costs it is a big loss. Also, a percentage of the scrap material is lost during refining. The gold value in dollars per weight is the same regardless of purity. I don't think the cost in dollars is his mission. The silver from karat scrap is very profitable IMHO. 👍 The costs of equipment repairs, replacements, and upgrades and now replacements again, has been significant.
49:17 "It's getting late. I'm tired. This is when mistakes happen." This quote should be noted as it is knownledge to live by. Not only pertaining to gold refining but just in general. Stay safe everyone!
There is nothing... and I mean NOTHING.. like the feeling of PURE GOLD.. in the palm of your hand. Always love hearing you say that. Beautiful gold bar and great pour lines. Thanks for uploading.
I love the chemistry of every one of your refineries. I read, liked all your comments. I agree with everything you mentioned. Keep up the good work & keep putting out this content. I've learned a lot from you. Thank you!
Thank yoy sir again. This was very informative as initially I was like wow that’s really smart. Until I saw the results now I know not worth the hassle. Thank you.
Excellent video once again thank you 😊 the struggle is real with the filtering process!!! I play with Escrap only because my feed stock is basically Free !!! The amount of time refining this material is insane but fun
Twenty years of oil field machining with many late nights on a big lathe because everyone is waiting on ya! I’m surprised I’m not dead. Thanks for sharing and I did learn something.
I did twenty years in the Navy. I remember waiting on the MR (machinery repairman) to cut new wearing rings for one of the fresh water pumps on the distilling plant. We had no water to take showers while underway until he got them rings cut. Them the whole ship was waiting on us to reassemble the pump and get the evaps back up and running so they could wash up. But that’s ok, I work better under pressure.
I think he kinda had to with this round. He said during one of his recent platinum videos that Mrs. Sreetips wasnt happy with him getting behind due to the platinum stuff.
I love to sit and watch your videos I learn so very much . Even though I don't do experiment such as yours . It's always good learn something new from a learn Ed person such as you .
I think this video perfectly illustrates the difference between how things work in theory and how they work in reality. I thought using gf scrap was a great idea, but I never would have thought you had the troubles with it that you did. Great video.
I love to see the honest results of experiments like this. The bulk of the brass is copper, which should be no problem when inquarting, but that 15% zinc and the lead tin soldier really changed everything. Awesome video Sreetips. Its cool to see you experimenting and showing why its better to stick with a sterling silver inquartation when possible. If not, use pure copper or pure silver.
Appreciate the video! I know it’s kind of a taboo subject on RUclips but I’m really interested in the financials behind buying scrap gold / finding the chemicals for the best prices / selling the refined gold for profit etc. Thanks again!
I have watched so many of these videos now and I still find it fascinating. I am sure some time in the past person or group figured out how to do this in antiquity. That knowledge was lost and that is how the rumor of alchemy turning lead int gold came about.
Very interesting to see you use the gold filled scrap this time and very interesting to hear the facts of "gold plated", I will never buy this now after learning this from you. Nice that the yield was close, I wonder how much gold is in the stockpot? Awesome video. 👍
Excellent video! Really proves the point that your silver enquartation approach works really well compared to using gold filled scrap. Still, in spite of the extra work you produced another stunning bar with a very good yield. Well done! 👍
Ended up with a good looking bar! First drop the liquid was the same color skin turns when wearing gold filled jewelry! Have you thought about going to a greater gold percentage with the alloy to see if it prevents it from going colloidal?
@@sreetips the other thought would be to re-melt after the first couple of nitric acid baths when you are no longer getting a reaction and most of the zinc is gone. You would be left with mostly copper and some silver and it might keep it from breaking down into colloidal.
Not only is the Zinc more reactive, but as it is removed early, it's absence will leave channels through the remaining mostly copper alloy. Those channels will add a lot of surface area, thus speeding up the remainder of the extraction. You might find yourself using this more often, to save time. Lets hope it doesn't add any problems. Of course, you could also inquart using a mixture of sterling silver and gold filled scrap.
I think he spent maybe up to 10 hours extra to recover 6 extra grams from the gold filled scrap. Combined with the extra headache, I think it's not worth using this method.
@@lazyman114 Trying something new always takes more time. Doesn't mean it's not worth trying. Best way to learn something new. The problem Steetips ran into is not inherent to this method. It's a problem whenever the inquarted gold is much less than 25%. At 25% you get a gold sponge.
Beautiful bar! Super interesting process this time. It looked like you were loosing quite a bit when the gold was in that finely divided state during the pouring off process. It’s really interesting the different states the gold goes through during the process. Any ideas for future inquarting, i.e different metals or just going to stick with sterling?
Your most perfect bar yet, and at today's spot price just a bit over $7300. And it seems that the high-purity gold precipitate tends to clump together (so that less of it gets poured off with the waste solution) than the low-purity stuff earlier.
Even in these difficult situations,...you produced an excellent yield and excellent content. Must be difficult to concentrate on the video-content side, while working on a stubborn process.
Great work as usual Sreetips. The zinc and copper will use a little more nitric acid than the silver would have because these metals both have a valence of 2 rather than the valence of 1 for silver. Interestingly, under some controlled reaction conditions, zinc will form nitrous oxide "laughing gas" instead of the brown nitrogen dioxide that usually forms.
You are welcome! Tremendous video of a tremendous effort with a tremendous result that I watched in tre instalments and which I give tre tumbs up--->👍👍👍
Considering that a lot of colloidal gold went to your temporary waste container while cleaning the precipitated gold, the yield was really good. I believe it was so close to the theoretical yield because of the extra from the gold filled material, about 5 to 6 grams. Anyway, that's a messy alternative to be used when you have no silver/copper readily available, but it is surely not ideal.
Great video and it seems like a real pain to process it this way. But at least it turned out a beautiful bar. Seemed to break the gold down a lot more than silver.
So glad to see a happy ending on this. It sounded like it wasn't going too well and I was afraid of what the actual yield was going to be, but in the end, it's a gorgeous bar and very little (temporary) loss of gold!
Don't know whether this might be useful but I used to have to extract settled sediments from the liquids, the problem was you couldn't Syphon off all of the liquid, so I got a wine bottle with a plastic screw top, cut off the bottom with a tile saw, then you could fill with the liquid and leave it, the sediments settled on the plastic cap right in the neck, so you could Syphon off almost all the liquid without disturbing the sediment, it's also how the painters extract pigment from water based paint out of brushes, it just flows out of the brush and falls to the bottom without circulation,
I enjoyed the longer video. This was a fun one to watch. I knew in the end. You were going to produce an amazing looking bar of pure .999 gold. I'm looking forward in you tackling the gold refining waste. This gold filled experiment throw a lot if junk into it im guessing. Fun stuff Sreetips.
Me and my wife recently discovered your channel and we have been bingewatching your content. It has a very strong ASMR video feel to it. Now we got talking about your accent and im thinking Boston, the wife is saying Vermont. How wrong are we?? Absolutely enjoying the video's!
This gentleman sound's like a Airplane Captain I feel save to fly with. I am watching this for 3 days, it is really interesting. Thank you. Good bless America and it's service to the world.
Been doing my revision. (You've got me doing my balanced equations again!!) Seems to me that the white clouding solid making that first filtering a nightmare was almost certainly Lead sulphate. Anyone agree? Sree mentioned that lead solder was likely present in the Gold Filled material. Honestly, this channel is reigniting my love of chemistry all over again! If I'm ever at a pub quiz, I'm definitely going to know what Muriatic Acid is more properly known as!! Thanks again for all your effort.
I really enjoy these longer videos like this. I prefer a long video to multiple shorter ones I think. I’m guessing you won’t be enquarting with gold fill again anytime soon… ouch… still, pulled it off. Challenge complete. Lol… 👍💪💪
Absolutely excellent video Sir Sreetips!💯This is exactly how we learn brother! A huge THANK YOU!!! You did a incredible job cleaning up that solution! Bravo!!! Is there a difference between Stump-out and Food grade SMB?
Just so you know. I look forward to watching your videos. I have learned so much, and chemistry is like magic. Thank you. So with the colloidal gold, can't you just dry it and remelt it, weigh the bar and add silver to enquart?
Hooyah Shipmate!!! I love your videos. You do great work. I have an idea, could you put your fume hood over a regular glass topped stove? Then you would have four burners at the ready and you wouldn’t need to keep replacing the single burner so often. Thank you.
Also a self cleaning oven gets like up to like 900 degrees. That might help instead of using your outside oven/ kiln. I hope not to be nosy, but after seeing your videos from years ago it seems like you are constantly trying to improve your processes. I’m mostly thinking of how I’m gonna make my refining work center. You motivate me!! If you can do it I can too.
Awesome video love it. I would like to see you refine gold-plated material I think that would be cool to see starting weight vs refined weight, just a suggestion. Thanks again
@@NOFX0890 Gold plated scrap is not worth refining, probably even with a stripping cell. It might be profitable for a big refinery that could treat it as a secondary recovered material. Heap leaching might also be worthwhile if you have a few tons of the scrap - but that process is really nasty.
SREETIPS is the precipitate silver chloride during your nitric acid boils? I’m a few vids behind and need to catch up. Thanks for always keeping me interested in chem. You truly are a modern day wizard sir?
54:07 It looks like a lot of fine gold powder is pouring off into the gold refining waste flask. Is there something about the impurities in this batch that causes Au to precipitate into a fine powder, rather than into the usual larger granules?
When you get the purple gold nanoparticles in suspension, I wonder if adding a small amount of SMB would act as a surfactant, and cause them to condense? I know that it can make particles of many atoms when it reacts with chloroauric, but I wonder if it can have the same effect on particles in suspension. Next time you get some 'purple gold' it might be worth putting some in your spot wells and trying different remedies like copperous, or even lye. If you can find an additive that efficiently condenses colloidal gold, it might open up other refining options.
Hello Mrs and Mr sreetips. I love the way you take us thrue wats happen. Ten tumbs up from me😊. I coment before i have see the whole clip, becouse i now you i now you make it🌹. Have a nice weekend, and my god bless you more, and more. Thank you both of you. Arne
going from loking like the pirate/miners gold at amusment parks where you pan out your own "nuggets" and getting them smelted in to a coin i think. It had the excat same colur as inquartation and from that going to that black mud with specs of purple calling it for the night all setteling giving you a boost to make a really nice bar in the just missing 0.7g that was amazing. just a question is it the mold or is it technic that made the bar non flat in the bottom? Kindest regards from sweden so excuse the bad english
The mold is graphite. Pouring molten gold into a hot graphite mold is going to produce an irregular pattern on the bottom and sides of the bar. Most bars that are perfect in every way have been stamped or pressed.
Considering the amount lost in waste that was a excellent total. Way more than I thought. No stannous testing, was it not really necessary on this one or was it cause you knew some would stay suspended ? 1 other question I always wanted to ask, would it be worth getting a digital karat reader? I know a lot of pieces not plumb would always be either under or over karat stamp. Would that interfere in inquarting ?
There’s a “Goldie locks” range for inquarting. Too much silver and the gold will crumble to a powder making separation of the silver difficult to pour off. Too little silver and the nitric may not be able to penetrate.
I have this question: when you have gold dissolved in aqua regia, and you drop it out with SMB, do all metals drop out? Or are there any metal contaminants (like, say, copper) that would stay in solution, if they were present? Obviously sodium stays in liquid since it's part of SMB, so I guess it would be an example that answers my question, but I do wonder if there are other, more relevant, metals, that are left behind by this step.
If you do water boils after the initial nitric boils you should dissolve out and remove 99.999% of the base metal nitrates prior to the aqua Regia. The filter then removes most of the sulfates that were insoluble in both water and aqua Regia. Ideally that means very little is in the solution your adding the SMB too. It should in theory at that point be functionally pure chloroauric acid in water. The cloudiness of the first crash are the nanoparticles left over that pass the filter. So you do the second aqua Regia dissolve to give yourself another filtration chance to get them out. Each time should be 99.5%+ removal of contaminates so two is normally enough for three 9 gold. Three often gets you close to four 9 gold. Rarely worth bothering for more than four 9 gold.
SMB is fairly selective in that it will precipitate only the gold and leave the copper in solution. HOWEVER, it will precipitate out platinum group metals, in trace amounts, if they are present in the gold solution. Ferrous sulfate seems to be the most selective of all gold precipitants. It (ferrous sulfate) “will drop the gold, all the gold, and nothing but the gold.”
I've been watching/learning from you on recycling the gold from computer boards, etc. I purchased a solution that's 33.2% chloric acid to release the gold. (Living in a small town I can't find nitrate acid). But is 33.2 strong enough for what I'm doing? And is it ok to leave the parts soaking overnight? Thanks!
I don’t have any experience chloric acid. I’ve used hydrochloric acid and 3% hydrogen peroxide (acid/peroxide aka A/P) to release gold foils from computer scrap fiber board. Hydrochloric acid from ace hardware. Hydrogen peroxide from the grocery store.
@@sreetips I'm sorry I meant hydrochloric acid. It's a solution for cement etching. So hydrochloric and hydrogen peroxide would be a 1:1 ratio for the boards. Sorry for asking so much. I'm a total noob with chemistry
Could you have used HCL to dissolve the zinc first, without dissolving copper or silver? It would be cool to show off the chemistry of the reactivity series. Or would that have made the colloidal gold issue worse?
Hello Mr Sreetips! Great video once again! Can I ask where you bought your ingot mold that you pour your gold bars into? I have been looking for something like that but I can't find any on Amazon. Thank you, sir!
While it does slow down the karat scrap refining (bummer about the colloidial gold), does it speed up the gold filled refining? seems like the gold filled refining process is really long.
@@sreetips bummer. Do you think it would have worked better if you used slightly less GF in the inquartation? I'd be nice if you tried again in the future to see if you could improve the process, but I also realize you also refine silver so I get why you aren't exactly jumping to try again.
-That white gold in your 14k portion is Rh plated.
-You could use the Au electroplated material to inquart. The Au is plated on brass, which is Ni and then Au electroplated. Just assume that all the electroplated weight is 'inquart.' You'd be adding in the same Cu and Zn that's part of your Au filled material.
-That junk metal is 'brass' or 'Zn diecast', that is zincate immersion (Na2ZnO3) coated, Cu flashed, Cu plated, Ni flashed, then Au flashed. Zn is just as useful to inquart as Cu or Ag. It all comes out when you do your HNO3 boils.
-The material at the bottom of your melt dish is likely stainless steel.
-I'm surprised at how little slag you have floating on top. That'd be your Zn or maybe Pb oxides. Looks like they might have been rinsed out into the drain when you spatter cast your melt into the cooling water tank.
-The activity series isn't going to predict reactivity with acid. If anything, the reaction you got would be from the amount of Cu and Zn in the inquarted gold. Whatever Zn you add to your process will pas all the way through to your final Fe waste stream and be discharged in any liquid supernate.
-Jeez. I didn't even consider Sn.
-That white sediment on the bottom of the beaker, after the HCl boil, is your PbSO4.
-Double, triple or even quadruple up on your filter paper for the Buchner funnel. In the old days, we'd use an asbestos fiber filter mat. I'd think you could use an activated carbon layer on top of the filter papers to help you get your clear solution. Of course, you'd need to add the carbon to your filter paper stash for later metal recovery.
Yes, the filtration step will be slow, but less sensitive to high pressure vacuum.
That IS nice Au!
Long road to well done!
Mr. Foote. Thank you for the lesson of the day. You answered my ?’s and I’m sure some of SREETIPS’ as well. Keep posting here please. I’ll be watching for my next lesson sir. 😊
Beautifully done. Stepping into something new, having it act in a very unexpected way, and you made the great save. Thanks for sharing. Steady wins the race.
Interesting to see how different this went in comparison to using silver. another great vid!
It would be cool to see a video explaining the cost to profit ratio. Like how much you spend on chemicals, electricity, and metals compared to the value of the finished product.
I believe it is negative. The scrap metal cost is fixed at scrap value. The refining costs are expensive. If you add up the two costs it is a big loss. Also, a percentage of the scrap material is lost during refining. The gold value in dollars per weight is the same regardless of purity. I don't think the cost in dollars is his mission. The silver from karat scrap is very profitable IMHO. 👍
The costs of equipment repairs, replacements, and upgrades and now replacements again, has been significant.
@@anthonyrstrawbridge Diamonds have no resale value. None.
He’s not doing it for profit. It’s a hobby so profit isn’t the primary mover.
@@Heymrk 👍👍👍♥️✌️
@@anthonyrstrawbridge And don't forget the RUclips revenue.
49:17 "It's getting late. I'm tired. This is when mistakes happen." This quote should be noted as it is knownledge to live by. Not only pertaining to gold refining but just in general. Stay safe everyone!
You stay safe! I'll LIVE! Thank you!
Yup. Always quit if you get tired.
@@datbeast767 Nothing much would get done if I stop after getting tired. In my case, I get most productive when it's bedtime.
Thank you for doing this video. I love it when people put themselves in situations that they're new at.
That trick with dissolving the gold off the inside of the beaker was pretty cool.
If for nothing else, this was very interesting. To see a different inquartation with something different than silver. Thanks for the hard work.
There is nothing... and I mean NOTHING.. like the feeling of PURE GOLD.. in the palm of your hand.
Always love hearing you say that. Beautiful gold bar and great pour lines. Thanks for uploading.
I love the chemistry of every one of your refineries. I read, liked all your comments. I agree with everything you mentioned. Keep up the good work & keep putting out this content. I've learned a lot from you. Thank you!
Nice recovery Sreetips!....and the bar looked very uniform. A++++
Thank yoy sir again. This was very informative as initially I was like wow that’s really smart. Until I saw the results now I know not worth the hassle. Thank you.
Excellent video once again thank you 😊 the struggle is real with the filtering process!!! I play with Escrap only because my feed stock is basically Free !!! The amount of time refining this material is insane but fun
Great video, it’s fun to watch you try new things…always learning! Maybe due to the increased reactivity of the base metal less is required.
Twenty years of oil field machining with many late nights on a big lathe because everyone is waiting on ya! I’m surprised I’m not dead.
Thanks for sharing and I did learn something.
I did twenty years in the Navy. I remember waiting on the MR (machinery repairman) to cut new wearing rings for one of the fresh water pumps on the distilling plant. We had no water to take showers while underway until he got them rings cut. Them the whole ship was waiting on us to reassemble the pump and get the evaps back up and running so they could wash up. But that’s ok, I work better under pressure.
80 Minutes of goodness on a Saturday morning. Thank you good Sir.
Great video. It’s a lot more work this way. The gold bar is beautiful. Awesome job.
Although this didn't all go to plan, it was a great thing to watch, to see you think on you feet, and get a great result is a testament to you sir!
OMG! I am so excited to watch this just because it's an hour and 20 minutes! Can't wait!
Now this is gold content. Love the experimentation vids.
Really good idea, getting even more efficient with the process for gold filled material. I love seeing a new process or idea
I think he kinda had to with this round. He said during one of his recent platinum videos that Mrs. Sreetips wasnt happy with him getting behind due to the platinum stuff.
I love to sit and watch your videos I learn so very much . Even though I don't do experiment such as yours . It's always good learn something new from a learn Ed person such as you .
I think this video perfectly illustrates the difference between how things work in theory and how they work in reality.
I thought using gf scrap was a great idea, but I never would have thought you had the troubles with it that you did. Great video.
I was anticipating the gold falling apart. It just didn’t happen as quickly as I was expecting.
I love to see the honest results of experiments like this. The bulk of the brass is copper, which should be no problem when inquarting, but that 15% zinc and the lead tin soldier really changed everything. Awesome video Sreetips. Its cool to see you experimenting and showing why its better to stick with a sterling silver inquartation when possible. If not, use pure copper or pure silver.
All these videos and still my favorite part is the melt table. Thanks Sreetips
Appreciate the video! I know it’s kind of a taboo subject on RUclips but I’m really interested in the financials behind buying scrap gold / finding the chemicals for the best prices / selling the refined gold for profit etc.
Thanks again!
I have watched so many of these videos now and I still find it fascinating. I am sure some time in the past person or group figured out how to do this in antiquity. That knowledge was lost and that is how the rumor of alchemy turning lead int gold came about.
As always, great video,beautiful bar.
You've gotten way safer with your technique in these videos. Love this and really enjoy the content you make. Awesome content!
Fascinating video as always I thought the splatter board idea was quite ingenious in its simplicity.
Your process is wonderful to watch and your voice is extremely soothing thank you for another excellent video
Love watching you work sreetips. I never miss a video.
Thanks for showing us that experiment.
Awesome video as always , was quite the adventure !!
'Atta boy. That's more like the result we're used to. And the pour lines on that little bar are amongst the nicest I've seen from you lately.
Very interesting to see you use the gold filled scrap this time and very interesting to hear the facts of "gold plated", I will never buy this now after learning this from you. Nice that the yield was close, I wonder how much gold is in the stockpot? Awesome video. 👍
Excellent video! Really proves the point that your silver enquartation approach works really well compared to using gold filled scrap. Still, in spite of the extra work you produced another stunning bar with a very good yield. Well done! 👍
Ended up with a good looking bar! First drop the liquid was the same color skin turns when wearing gold filled jewelry! Have you thought about going to a greater gold percentage with the alloy to see if it prevents it from going colloidal?
Didn’t think of it for this run. But it’s not a bad idea.
@@sreetips the other thought would be to re-melt after the first couple of nitric acid baths when you are no longer getting a reaction and most of the zinc is gone. You would be left with mostly copper and some silver and it might keep it from breaking down into colloidal.
Not only is the Zinc more reactive, but as it is removed early, it's absence will leave channels through the remaining mostly copper alloy. Those channels will add a lot of surface area, thus speeding up the remainder of the extraction.
You might find yourself using this more often, to save time. Lets hope it doesn't add any problems. Of course, you could also inquart using a mixture of sterling silver and gold filled scrap.
Might be worth experimenting to see at what percent of zinc does the gold start to fall apart and form suspensions.
Using silver feeds the silver cell.
I think he spent maybe up to 10 hours extra to recover 6 extra grams from the gold filled scrap. Combined with the extra headache, I think it's not worth using this method.
@@lazyman114 Trying something new always takes more time. Doesn't mean it's not worth trying. Best way to learn something new.
The problem Steetips ran into is not inherent to this method. It's a problem whenever the inquarted gold is much less than 25%. At 25% you get a gold sponge.
Beautiful bar! Super interesting process this time. It looked like you were loosing quite a bit when the gold was in that finely divided state during the pouring off process. It’s really interesting the different states the gold goes through during the process. Any ideas for future inquarting, i.e different metals or just going to stick with sterling?
I have more sterling that needs to be dissolved so I’ll probably use that.
Your Videos have soul cleansing quality.
Your most perfect bar yet, and at today's spot price just a bit over $7300. And it seems that the high-purity gold precipitate tends to clump together (so that less of it gets poured off with the waste solution) than the low-purity stuff earlier.
Thank you streetips. The audio quality is almost perfect.
That's a good looking pour sir! Cheers from Canada! 🇨🇦👍
I got a kick out of the aqua regia cleaning up that nasty looking glass! Great video!
Even in these difficult situations,...you produced an excellent yield and excellent content. Must be difficult to concentrate on the video-content side, while working on a stubborn process.
Very Beautiful bar I love how it has a fingerprint look on it . Keep up your terrific videos . 👍👍👏👏
Great work as usual Sreetips. The zinc and copper will use a little more nitric acid than the silver would have because these metals both have a valence of 2 rather than the valence of 1 for silver. Interestingly, under some controlled reaction conditions, zinc will form nitrous oxide "laughing gas" instead of the brown nitrogen dioxide that usually forms.
I noticed some white foam during the nitric boils.
You are welcome! Tremendous video of a tremendous effort with a tremendous result that I watched in tre instalments and which I give tre tumbs up--->👍👍👍
I've been learning so much. I might try my hand at metals recovery.
Considering that a lot of colloidal gold went to your temporary waste container while cleaning the precipitated gold, the yield was really good. I believe it was so close to the theoretical yield because of the extra from the gold filled material, about 5 to 6 grams.
Anyway, that's a messy alternative to be used when you have no silver/copper readily available, but it is surely not ideal.
well sure it is messier, BUT on the other hand you do 2 refinings in one, scrap and carat, so it seems like it does save work, and quite a bit
Amazing video thanks for sharing as always.. How is your silver cell doing, we miss it lol
I’ll get some footage of it in my next video.
Another stunning looking bar of gold, well done Sir..🙂👍
Great vid Sreetips.
Great video and it seems like a real pain to process it this way. But at least it turned out a beautiful bar. Seemed to break the gold down a lot more than silver.
This is interesting. Thank you.
Another amazing video as always
So glad to see a happy ending on this. It sounded like it wasn't going too well and I was afraid of what the actual yield was going to be, but in the end, it's a gorgeous bar and very little (temporary) loss of gold!
That’s exactly how I was feeling
Don't know whether this might be useful but I used to have to extract settled sediments from the liquids, the problem was you couldn't Syphon off all of the liquid, so I got a wine bottle with a plastic screw top, cut off the bottom with a tile saw, then you could fill with the liquid and leave it, the sediments settled on the plastic cap right in the neck, so you could Syphon off almost all the liquid without disturbing the sediment, it's also how the painters extract pigment from water based paint out of brushes, it just flows out of the brush and falls to the bottom without circulation,
I enjoyed the longer video. This was a fun one to watch. I knew in the end. You were going to produce an amazing looking bar of pure .999 gold. I'm looking forward in you tackling the gold refining waste. This gold filled experiment throw a lot if junk into it im guessing. Fun stuff Sreetips.
I’m might jump right on the waste and get that gold out of there.
@@sreetips I was thinking about that.
From the pimple to a mighty dimple bar! Very nice!
Me and my wife recently discovered your channel and we have been bingewatching your content. It has a very strong ASMR video feel to it. Now we got talking about your accent and im thinking Boston, the wife is saying Vermont. How wrong are we?? Absolutely enjoying the video's!
Iowa
@@sreetips oh lord.... haha tnx for your reply. Love what you are doing
This gentleman sound's like a Airplane Captain I feel save to fly with. I am watching this for 3 days, it is really interesting. Thank you. Good bless America and it's service to the world.
Thank you!
Don't thank me, please I didn't do anything. But this videos are Legendary.
ruclips.net/video/5z0wUA4q1yA/видео.html this person has all the hacks on RUclips.
Been doing my revision. (You've got me doing my balanced equations again!!) Seems to me that the white clouding solid making that first filtering a nightmare was almost certainly Lead sulphate. Anyone agree? Sree mentioned that lead solder was likely present in the Gold Filled material. Honestly, this channel is reigniting my love of chemistry all over again! If I'm ever at a pub quiz, I'm definitely going to know what Muriatic Acid is more properly known as!! Thanks again for all your effort.
Tin and nitric form metastannic acid, or tin paste. It will clog a filter like trying to pull Elmer’s glue through a filter paper.
@@sreetips and this is why I should not be trusted to get out the chemistry set!! thank you!
I really enjoy these longer videos like this. I prefer a long video to multiple shorter ones I think. I’m guessing you won’t be enquarting with gold fill again anytime soon… ouch… still, pulled it off. Challenge complete. Lol… 👍💪💪
Absolutely excellent video Sir Sreetips!💯This is exactly how we learn brother! A huge THANK YOU!!! You did a incredible job cleaning up that solution! Bravo!!! Is there a difference between Stump-out and Food grade SMB?
Thank you. No difference.
Just so you know. I look forward to watching your videos. I have learned so much, and chemistry is like magic. Thank you. So with the colloidal gold, can't you just dry it and remelt it, weigh the bar and add silver to enquart?
Yes,
Man I fell asleep last night at 1:04:09 !! Finishing now! Man this reminds me of inquiring with too much copper!! Nasty mess lol so much extra work
A lot less loss than anticipated
Excellent.
This is my favorite show.
Hooyah Shipmate!!! I love your videos. You do great work. I have an idea, could you put your fume hood over a regular glass topped stove? Then you would have four burners at the ready and you wouldn’t need to keep replacing the single burner so often. Thank you.
Also a self cleaning oven gets like up to like 900 degrees. That might help instead of using your outside oven/ kiln. I hope not to be nosy, but after seeing your videos from years ago it seems like you are constantly trying to improve your processes. I’m mostly thinking of how I’m gonna make my refining work center. You motivate me!! If you can do it I can too.
That’s not a bad idea except, the stone wouldn’t hold up to exposure to the acid fumes.
Awesome video love it. I would like to see you refine gold-plated material I think that would be cool to see starting weight vs refined weight, just a suggestion. Thanks again
Search for his vids on sulphuric acid stripping cell.
He has a video where he does exactly that, if I recall correctly.
@@buggsy5 certainly.
Then not long after, he sold all his gold plated scrap.
Telling.....
Is the juice worth the squeeze.
@@NOFX0890 Gold plated scrap is not worth refining, probably even with a stripping cell.
It might be profitable for a big refinery that could treat it as a secondary recovered material. Heap leaching might also be worthwhile if you have a few tons of the scrap - but that process is really nasty.
SREETIPS is the precipitate silver chloride during your nitric acid boils? I’m a few vids behind and need to catch up. Thanks for always keeping me interested in chem. You truly are a modern day wizard sir?
Silver chloride usually precipitates instantly when it comes in contact with hydrochloric acid.
Another great video and a beautiful gold bar.
For experimentation, can you attempt to do a refining with the nitric acid substitute that I see on eBay these days?
Poor-man’s AR. I’ve never used it. I don’t know how to even make it.
i like this episode,rob
54:07 It looks like a lot of fine gold powder is pouring off into the gold refining waste flask. Is there something about the impurities in this batch that causes Au to precipitate into a fine powder, rather than into the usual larger granules?
No worries, in six months I’ll recover that gold
When you get the purple gold nanoparticles in suspension, I wonder if adding a small amount of SMB would act as a surfactant, and cause them to condense? I know that it can make particles of many atoms when it reacts with chloroauric, but I wonder if it can have the same effect on particles in suspension. Next time you get some 'purple gold' it might be worth putting some in your spot wells and trying different remedies like copperous, or even lye. If you can find an additive that efficiently condenses colloidal gold, it might open up other refining options.
What ah Guy, and Great technician.
Hello Mrs and Mr sreetips. I love the way you take us thrue wats happen. Ten tumbs up from me😊. I coment before i have see the whole clip, becouse i now you i now you make it🌹. Have a nice weekend, and my god bless you more, and more. Thank you both of you. Arne
going from loking like the pirate/miners gold at amusment parks where you pan out your own "nuggets" and getting them smelted in to a coin i think. It had the excat same colur as inquartation and from that going to that black mud with specs of purple calling it for the night all setteling giving you a boost to make a really nice bar in the just missing 0.7g that was amazing. just a question is it the mold or is it technic that made the bar non flat in the bottom?
Kindest regards from sweden so excuse the bad english
The mold is graphite. Pouring molten gold into a hot graphite mold is going to produce an irregular pattern on the bottom and sides of the bar. Most bars that are perfect in every way have been stamped or pressed.
@@sreetips oh ok then I understand
Considering the amount lost in waste that was a excellent total. Way more than I thought. No stannous testing, was it not really necessary on this one or was it cause you knew some would stay suspended ? 1 other question I always wanted to ask, would it be worth getting a digital karat reader? I know a lot of pieces not plumb would always be either under or over karat stamp. Would that interfere in inquarting ?
There’s a “Goldie locks” range for inquarting. Too much silver and the gold will crumble to a powder making separation of the silver difficult to pour off. Too little silver and the nitric may not be able to penetrate.
I've literally been binge watching now for like 3 days and that's the first time you've worn a mask lol
@SRESSEGKL get a life scammer
You listened to my idea! thanks Sreetips!
Over an hour sree refining video on a Friday night 😎😎.
😊🇺🇲
if you use a stainless screen that's touching the water you can get a finer beads of inquarted medals
For the purpose of inquartation, how do you know how much gold-filled material to use? Or do the constants you use for sterling silver still apply?
Should still apply.
Is this the only way to refine the gold-filled stuff? How would you get the gold off the gold-filled material otherwise? Process it separately?
Yes
Interesting experiment, important lesson learned.
I have this question: when you have gold dissolved in aqua regia, and you drop it out with SMB, do all metals drop out? Or are there any metal contaminants (like, say, copper) that would stay in solution, if they were present?
Obviously sodium stays in liquid since it's part of SMB, so I guess it would be an example that answers my question, but I do wonder if there are other, more relevant, metals, that are left behind by this step.
If you do water boils after the initial nitric boils you should dissolve out and remove 99.999% of the base metal nitrates prior to the aqua Regia. The filter then removes most of the sulfates that were insoluble in both water and aqua Regia.
Ideally that means very little is in the solution your adding the SMB too. It should in theory at that point be functionally pure chloroauric acid in water. The cloudiness of the first crash are the nanoparticles left over that pass the filter. So you do the second aqua Regia dissolve to give yourself another filtration chance to get them out. Each time should be 99.5%+ removal of contaminates so two is normally enough for three 9 gold. Three often gets you close to four 9 gold.
Rarely worth bothering for more than four 9 gold.
SMB is fairly selective in that it will precipitate only the gold and leave the copper in solution. HOWEVER, it will precipitate out platinum group metals, in trace amounts, if they are present in the gold solution. Ferrous sulfate seems to be the most selective of all gold precipitants. It (ferrous sulfate) “will drop the gold, all the gold, and nothing but the gold.”
I've been watching/learning from you on recycling the gold from computer boards, etc. I purchased a solution that's 33.2% chloric acid to release the gold. (Living in a small town I can't find nitrate acid). But is 33.2 strong enough for what I'm doing? And is it ok to leave the parts soaking overnight? Thanks!
I don’t have any experience chloric acid. I’ve used hydrochloric acid and 3% hydrogen peroxide (acid/peroxide aka A/P) to release gold foils from computer scrap fiber board. Hydrochloric acid from ace hardware. Hydrogen peroxide from the grocery store.
@@sreetips I'm sorry I meant hydrochloric acid. It's a solution for cement etching. So hydrochloric and hydrogen peroxide would be a 1:1 ratio for the boards. Sorry for asking so much. I'm a total noob with chemistry
just curious would it be possible to burn off the zinc with sulfuric acid first
Possibly
Could you have used HCL to dissolve the zinc first, without dissolving copper or silver? It would be cool to show off the chemistry of the reactivity series. Or would that have made the colloidal gold issue worse?
My guess is that it would make a mess
Good video. I myself never collect enough GF to refine separately... so I'll add it during the inquartation process.
Hello Mr Sreetips! Great video once again! Can I ask where you bought your ingot mold that you pour your gold bars into? I have been looking for something like that but I can't find any on Amazon. Thank you, sir!
eBay seller makeyourowngoldbars all one word.
@sreetips thank you sir!
finally, a very long videos like the old days!
That bar of Au is worth $8K!! Nice job Mstr. Ch.
While it does slow down the karat scrap refining (bummer about the colloidial gold), does it speed up the gold filled refining? seems like the gold filled refining process is really long.
It defaults to the slower of the two processes.
@@sreetips bummer. Do you think it would have worked better if you used slightly less GF in the inquartation? I'd be nice if you tried again in the future to see if you could improve the process, but I also realize you also refine silver so I get why you aren't exactly jumping to try again.
You should try using your silver shot to inquart and use the same constants you use for Sterling.
Great save, i was worried when it was splattering and turning into black mud!
I was a bit concerned about the yield. Was relieved to see it was very close.