You may have been in a hurry on this one, Sreetips, but in my opinion it was one of the cleanest, most impressive refining you've ever posted. Truly wonderful stuff, sir!
I love when you post a late video, and to find out it's a large melt all the better. Your yield estimate was nearly perfect . Your Silver jar is full again so we got that to look forward to. Thank you ❤️
Failed at my first gold recovery of CPU's...lol. Looking for Gold Scrap on ebay to melt down next in my furnace! Just started this adventure! Thank you for the great vids! I uploaded some myself on my channel! Much love!
Recycle it, man the gold is still there. That's the beauty of chemistry. If you didn't incinerate the gold ,literally burned it away, it should be in the material you have left.
Dont buy the Ebay bars lol, they are a scam. Your failed cpu attempt is salvagable as long as u kept the acid. Check out the 'stock pot' series on this channel on how to cement out valuables from the acid waste.
@@osmia3561 I’ll check it out! Thanks! I have a Gallon of acid, with gold and silver contents. And about another gallon of gold flakes flaking off a Muriatic peroxide solution. Been frustrating at times but extremely cool!
Still waiting for you to take a piece of the inquarted gold and put a pinch on it with some pliers/channel-locks/vice grips after dissolving out the silver and base metals with nitric boils. Super curious to see how it reacts to pressure after having 3/4 of a flake's mass removed by nitric.
Yeah, maybe just poke it with a glass stir rod to keep everything clean, I'd enjoy seeing if cracks into pieces or disintegrates or if it's more squishy
That’s what I’m talking about. Just wait until people realize that all their valuations are based on a mountain of debt. Then we won’t be able to find gold anywhere. When? Who knows? But it’s coming,
Another great video, it still amazes me that you are able to mix the different carats and still get the gold out. Inquarting is the key but its still amazing. Thanks sreetips,stay safe✌️
I JUST watched a video on RUclips about using heavily salted water 💧 and a small electric current in a stone dish using a piece of lead attached on negative terminal and a piece of copper made into a small bowl with positive attached to it and the gold plating came off in like 15 seconds he processed a lot of gold 😋 very quickly with that homemade setup. BY THE WAY GREAT VIDEO SREETIPS. 👍🏻👍🏻
@@nikolajwinther5955 Look at 26:17 - they are near perfectly circular and share the same centre point with different radii so concentric. That's why it looks just stunning. Agreed, the eccentricity of the outer ellipses are of course < 1 hence eccentric.
I have got bags of mixed gold and silver jewelry from a couple of inheritances, and in the past, I dealt with a lot of computer and mobile phone scrap etc, so I think my next step is refining.
The chain of silver coming out with the tangle of other stuff on the end when you were inquarting gave me a vivid flashback of the magnet fishing game I had as a kid.
Hello Mrs and Mr sreetips. I take a break from washing the floor, and toilets... and halleluja.. a clip from the best gold refining on RUclips 🎉. Whis everybody a great day,and God bless. Arne 🇳🇴
I just love watching u work on your experiments with gold it is amazing and beautiful plus it looks so good and listening to u expanding everything u have to do it's so calming your voice fantastic job. 😊
And it looks so good I need to find out where to get the acids and powders and I'm pretty sure I could do that I wish I stay on science and chemistry that looks fun watching the chemicals and powders reacting to different metals breaking them down to liquid and they back solid pure bars definitely something I have to try
That was a quick $5200 in a very nice bar, Sr. That was a good job. You always do pours right with really hot metal and a really hot mold. I've seen other RUclipsrs pour nice, hot metal into a mold that's either cold or they just put a torch on it before the pour. The bars or rounds end up junky because the metal starts to freeze before it has even settled fully in the mold. You never do that. That bar is gorgeous. The pour lines are amazing.
Love your videos! I was wondering if I sent you some scrap gold made by gold computer scrap, what would it cost to have you refine it? Of course, you could make a video of doing so.
So, after boil #2 there was a lot of nitric in the solution, would it be beneficial at that point to break up the gold and macerate it at all? Seems that the boils may be more effective (or maybe they weren’t needed) if it has better contact with the base metals and silver from gold mixtures. At the very least maybe that solution could also be recaptured for future boils to reduce expenses on the nitric acid purchases?
Breaking the gold up during nitric boils is not recommended. It causes the gold to form nano particles that suspend (or even worse colloidal gold) making separation of the silver solution difficult.
@@sreetips interesting. Didn’t know that but it’s good to know. What about recapturing some of that mixture for future nitric boils? Can you do that or is it too far gone by that point despite the vigorous reaction after pouring off the nitric boils from 2 and 3?
That bar is perfectly shaped, and one of the best so far despite the little bit of scale. I know that it is a sin to covet, but I'll deal with the guilt anyway.
all your experience is showing your professionalism is what makes you successful and I always learn something new with every refining process you make available to us you are a treasure for my own aspirations in gold refining and a I am so glad you take the time to share your knowledge with us...thanks sreetips
Another beautiful bar! Even though your videos are longer than pretty much everyone, I still watch every single minute of every single one. Thanks for the content sreetips. Glad I found this channel recently 🙌
Questions! 1. The nitric you saved from the boils: it's obviously been 'used up' a bit, but does it lose more potency when you store it for future use? Is there a way to tell? 2. I wondered why you don't use that nitric to make Aqua Regia, and I think it's because you can't be sure of the concentration, so it might slow the reaction, is that right?
1) The nitric is still able to dissolve silver. I can tell because of the red fumes it evolves when added to the silver in my silver jar. 2) that nitric will have some silver in it. I’m trying to remove the silver so it’s best to use fresh nitric to make the aqua regia.
سلام خدمت استاد مجرب استاد برای ریکاوری از سنگ یا خاک طلا در اکولوژیا درصد دو اسید نیتریک و کلریدریک بطور استاندارد چقدر باشه بهتره متشکر میشم راهنمایی فرمائید
Wow that ended up being a beautiful bar of gold luv watching I'm saving all my scrap and what I find at estate sales I'm getting a nice little collection
I usually melt my gold mid whole it's wet so none blows away. But I do as little as 5 grams of 24k at a time. I also melt it in my graphite mold, it's easier to melt with a propane torch in the mold than in the wide open crucible dish. But I have 1/10 your skills or your lab.
I'm going to assume the 3 tubs you use to hold the scrap caret gold are stolen because they don't say Sreetips on them 😆😂😆😂. All kidding aside, another beautiful bar sir.
People who’s jewelry is no longer repairable or wanted. They know I buy gold. They seek me out. They believe, incorrectly, that paper dollars are more valuable than gold.
Hello sir how are you We are miss to a new thinks of extract gold of anther juwerly and elecronic scrab we new mageic thuch of you in those thinks like this weed planents mineing mines stons sand ext... And with all respect you friend diea And full thanks for your dedication in your perfect work
You didn't even skim the dross off of your gold and silver mix when it clearly needed it. You can remove so much trash that way before you even start the refining process.
HI Sreetips, thanks for the video! have a quick question if you don’t mind. I have some scrap with platinum group metals. Is it correct that the palladium would come off with the nitric acid boils? Further does the SMB precipitate platinum or does it selectively precipitate the gold?
Palladium is soluble in hot nitric. But don’t expect a clean separation. Some of the platinum will dissolve along with the palladium. Some of the palladium will remain in the platinum. SMB is selective for gold, but traces of PGMs will come down with the gold if they are present.
That’s what I say every time I get that beautiful clear and bright chloroauric acid solution after dissolving in aqua regia and filtering. Those five nitric boils do a fantastic job of removing the other metals from the gold. Inquarting with silver, then parting with nitric boils; one of the most valuable refining techniques I’ve ever learned. Second only to incremental nitric dosing.
Because the pro refiners I learned from told me not to use urea. They said sulfamic is better. But if you’ve got the time, evaporation is second best, incremental nitric dosing, adding just the right amount of nitric, is best of all.
Are those numbers that you use for each different karat that you multiply to get the amount of silver constant. Such as 14k you multiply by 1.265 and 10 you multiply the amount of 10k by .635?
I was amazed that you only did a single refining to it with "aqua regia".. Unless you did a couple more off camera.. Nice Chunky Bar.. Thank you for sharing.. Always a delight to watch...
Hi my name is Jaime. I have a container full of plated jewelry. Includes watch casings watch bands lots of chains necklaces pocket watches charms...... would you be interested in purchasing or refining and splitting the end result. Let me know. Some silver too
Hello, thanks for the offer, but this is my hobby. I’m not a professional refiner. My business partner (and wife) has made me promise to only work on my own material, stuff that we find together at local sales. I must honor my commitment and respectfully decline. Thank you for your interest.
Hello, I find your videos fascinating; I am a subscriber and I watch them all. I have a question for you, if I may. Have you ever thought of refining gold by the Wohlwill process as some industrialists and jewelers do?
I know you have mentioned a book that you go to when it comes to precious metal mining and recovery. I think it was wrote in the 1930's I thought. I can't find the video awhile back you showed it or remember the name of the book. Any chance you know what book I'm trying to remember? Any help would be greatly appreciated. Thanks
Hi Mr. Sreetips, Avid watcher here from Germany. Almost two weeks have gone by since your last video. I hope Mrs. Sreetips and you, as well as your family is doing fine.
Im sorry its my first time watching a video like this and i have no clue whatsoever about this fascinating proces. I have a question, maybe somebody can explain, why add the silver to the gold when melting to than chemically remove? It again ... i dont understand why not melt gold en remove silver thats present in the jewelery to get pure gold or doesnt it work like this ? Thank you
For the best example please search my channel for “urban mining mother lode” in that video I demonstrate why we add silver by placing my 14k wedding band in the boiling nitric with the inquarted gold. It (my 14k band) remains unaffected while the nitric penetrates into the gold that’s been alloyed with additional silver. If a picture is worth a thousand words, then a video is worth a million.
I can’t remember if you’ve tried using some cement silver to in-quart. I was just wondering how well that would work since where I am it’s not an easy task to find sterling and most of the silver is just plated. Would the need of nitric acid be reduced since the amount of copper, zinc and tin would be reduced to almost nothing?
Cement silver can be used but it’s not recommended. Palladium follows the silver and builds up causing problems in the silver cell. Clean copper can be used in place of silver.
Hi I'm just wondering what stops the reaction ? As there is excess nitric in the liquid , if it's the concentration of the base metals in the liquid then could you add more water at this point to continue the reaction, don't know whether it's worth doing, I suppose you could try plating out the base metals electrically but that would be a race as the nitric would try to push it back into solution ,
Nothing is stopping the reaction. He had 99.75% of the base metals removed after the second nitric acid boil. The third was to clean it up, the fourth was to ensure a clear liquid remained. I would have considered the 5th that he did excessive, and the amount of nitric he used in the 4th and 3rd to also be excessive. But that was on purpose due to his desire to go quickly. The second has some excess nitric in while the sponge still contained a small trace of base metals due to the dissolveability of the silver nitrite in water, yeah you are correct. While it wasn't saturated by any means, it was close enough that the rate of dissolution was slowed. So functionally this video was showing that you can go faster and get the job done well at the expense of consuming double the normal amount of nitric acid you actually have to use if you take it slow. But given the fact he used less than what, $12 more nitric than he strictly needed to and saved himself like 6 hours of reaction time, that's easily worth the trade off. He prob buys that 67% stuff 10 liters at a time so it's really not that expensive. Less than $25 a liter.
I had a reaction to stall just yesterday.. Thought reaction was done, took it off the heat and suddenly it ran away over 10 seconds after i moved the beaker.. Luckily no boil overs.
As the nitric gets consumed, it can’t penetrate as well as fresh nitric can. Still some active nitric left in there but it doesn’t have the punch to make it any further into the inquarted gold. So I dump it out (even though there’s still active nitric) and add fresh to get nearly all the silver and base metals out.
I wonder how many stanis test strips it would take to recover a decent amount of gold that would be an interesting video... but this bar came out beautifully
??? What is the difference between 67% nitric lab grade and 68 to 70% acs reagent nitric for processing silver and gold. Your gold bar is one of your best looking.
ACS means American Chemical Standards meaning that an assay was performed and certified purity to certain standards. Industrial grade (technical grade) just means it hasn’t been tested as rigorously
I realize this video has nothing to do with the silver recoveries you do after processing your gold after enquartation. However, I noticed after you cement out the silver and you are trying to wash off the copper nitrate. Have you ever thought of vibrating the buchner funnel while rinsing instead of stirring? You might be able to rinse off the copper nitrate more efficiently if you vibrate the funnel while rinsing???
I have a suggestion for you: instead of casting shot, dumb your inquarted gold on a piece of polished stainless, and roll it down to les than half a millimeter, then cut strips of this to be dissolved in the acid. I don't know if this has been suggested before but it may make it easier for the acid to work it's magic rather than with chunky shots.
With those amounts of gold, it would be nice when you would dry it before melting. The collor change of the gold is just sooo mesmorising… Aspecialy when it’s this pure, like you always menage!! Cheers Jo-Z
Depends on the thickness of the gold over the silver. No way to really measure it. I did some gold plated silver a while back. But I can’t remember the yield.
You may have been in a hurry on this one, Sreetips, but in my opinion it was one of the cleanest, most impressive refining you've ever posted. Truly wonderful stuff, sir!
Yes
That's one beautiful chonky boy you made...been watching for years. So satisfying and soothing
I love when you post a late video, and to find out it's a large melt all the better. Your yield estimate was nearly perfect . Your Silver jar is full again so we got that to look forward to. Thank you ❤️
Beautiful bar! Don’t know why but watching the silver melt during the inquartation is always so satisfying.
i was hoping this was going to be a 10 Hour video :)
Agree😊. Have a nice day.
Great video. One of the most informative I have watched. You also have the creepiest voice I have ever heard. Congratulations!
Thank you! I had a terrible speech impediment as a child. Still working to overcome it.
@@sreetips what happens to the silver that you dump all the excess water in.
Well played again sir! Excellent work and another great video
Failed at my first gold recovery of CPU's...lol. Looking for Gold Scrap on ebay to melt down next in my furnace! Just started this adventure! Thank you for the great vids! I uploaded some myself on my channel! Much love!
Recycle it, man the gold is still there. That's the beauty of chemistry.
If you didn't incinerate the gold ,literally burned it away, it should be in the material you have left.
Dont buy the Ebay bars lol, they are a scam. Your failed cpu attempt is salvagable as long as u kept the acid. Check out the 'stock pot' series on this channel on how to cement out valuables from the acid waste.
@@osmia3561 I’ll check it out! Thanks! I have a Gallon of acid, with gold and silver contents. And about another gallon of gold flakes flaking off a Muriatic peroxide solution. Been frustrating at times but extremely cool!
@@jimwednt1229 I’m gonna try! It can get frustrating! More attempts coming soon!
Those have gold, but the amount is tiny. Stannous tests are not optional. Get some and use it to verify gold in solution.
Still waiting for you to take a piece of the inquarted gold and put a pinch on it with some pliers/channel-locks/vice grips after dissolving out the silver and base metals with nitric boils. Super curious to see how it reacts to pressure after having 3/4 of a flake's mass removed by nitric.
Yeah, maybe just poke it with a glass stir rod to keep everything clean, I'd enjoy seeing if cracks into pieces or disintegrates or if it's more squishy
Hes done it before and it just squishes. Im willing to bet if he dries a piece out, it will crumble.
Pure gold powder can be cold-pressed into a solid bar of gold, but I’ve never tried it.
@@sreetips I'll suggest that over at the hydraulic press channel :D
@@sreetips Time for a collaboration vid with the hydraulic press channel, bet you'd see a crazy jump in subs. Would be fucking awesome!
You sure are pumping out the videos Sreetips. Awesome! Let’s get you to 1 Million Subs.
That’s what I’m talking about. Just wait until people realize that all their valuations are based on a mountain of debt. Then we won’t be able to find gold anywhere. When? Who knows? But it’s coming,
24:32 My favourite part! 🔥👈🤩👍✨
This one was gorgeous. I love the bigger melts. Keep up the good work!
Another great video, it still amazes me that you are able to mix the different carats and still get the gold out. Inquarting is the key but its still amazing. Thanks sreetips,stay safe✌️
Thank you
I JUST watched a video on RUclips about using heavily salted water 💧 and a small electric current in a stone dish using a piece of lead attached on negative terminal and a piece of copper made into a small bowl with positive attached to it and the gold plating came off in like 15 seconds he processed a lot of gold 😋 very quickly with that homemade setup.
BY THE WAY GREAT VIDEO SREETIPS. 👍🏻👍🏻
Those ripples are SOO beautiful! I'm soo jelly! When will you be revealing the winning viewer that gets the bar??
😉
Another awesome gold bar thanks for sharing sreetips
For a single refining that's amazing. Those concentric pour lines are just stunning too. Well done!!
Eccentric, but yes.
@@nikolajwinther5955 Look at 26:17 - they are near perfectly circular and share the same centre point with different radii so concentric. That's why it looks just stunning. Agreed, the eccentricity of the outer ellipses are of course < 1 hence eccentric.
@@AndyGraceMedia I didn't even know that's where the word eccentric came from, every day is a school day! Lol
Beautiful job. Love how seamless the inquarting makes the process. That gold cleaned up really nicely
Mighty nice looking bar for a single refining! Excellent work as always!
I have got bags of mixed gold and silver jewelry from a couple of inheritances, and in the past, I dealt with a lot of computer and mobile phone scrap etc, so I think my next step is refining.
Just amazing!! No matter how many of your videos I watch the best part is when you add the SMB. The whole process is magical.
Your best bar imo.
Dang, that’s your cleanest pour yet! Incredible.
More nitric boils, more hydrochloric acid rinses, more gold bar melts! It’s a good morning!
Here nice and early. Sreetips, we appreciate you!
I can't express it enough but THANK YOU Shipmate. I've been refining for the last 3+ years because of your videos...
Nice!
You make it look so easy and I want to try
Hello sir, today it was some kind of elegant brute force... No messing arroud, let the acid o its job... precipitate, melt, DONE.
The chain of silver coming out with the tangle of other stuff on the end when you were inquarting gave me a vivid flashback of the magnet fishing game I had as a kid.
Hello Mrs and Mr sreetips.
I take a break from washing
the floor, and toilets... and halleluja.. a clip from the best gold refining on RUclips 🎉. Whis everybody a great day,and God bless. Arne 🇳🇴
Your videos are always fascinating to watch. Seeing and hearing every step in the process. Never stop making these videos, my friend! 💪🏻
Beautiful the colour and look of gold. Always fun to watch.
Might be your best pour ever
*sreetips* Bravo well done, thank-you sir for taking the time to bring us along. GOD Bless.
Thanks, for another great clip.
$5,597.18 of pure gold, wow!
I just love watching u work on your experiments with gold it is amazing and beautiful plus it looks so good and listening to u expanding everything u have to do it's so calming your voice fantastic job. 😊
Much agreed..
And it looks so good I need to find out where to get the acids and powders and I'm pretty sure I could do that I wish I stay on science and chemistry that looks fun watching the chemicals and powders reacting to different metals breaking them down to liquid and they back solid pure bars definitely something I have to try
That was a quick $5200 in a very nice bar, Sr. That was a good job. You always do pours right with really hot metal and a really hot mold. I've seen other RUclipsrs pour nice, hot metal into a mold that's either cold or they just put a torch on it before the pour. The bars or rounds end up junky because the metal starts to freeze before it has even settled fully in the mold. You never do that.
That bar is gorgeous. The pour lines are amazing.
Every now and then I lite the mold torch a little too late and the bar forms ugly.
@sreetips is there such thing as heating the mold too early ? Or is a general rule you go by for time ?
I begin heating the mold as I begin the melt and it seems to work fine. A graphite mold can be overheated and the graphite will become deteriorated.
Now that's a pretty bar of gold
The King of Inquartation. 10 hours new record time.
Love your videos! I was wondering if I sent you some scrap gold made by gold computer scrap, what would it cost to have you refine it? Of course, you could make a video of doing so.
Hello, unfortunately I only refine my own material. This is my hobby.
Ide like to see a full filter of the final product to see how close it gets to the expected yield.
So, after boil #2 there was a lot of nitric in the solution, would it be beneficial at that point to break up the gold and macerate it at all? Seems that the boils may be more effective (or maybe they weren’t needed) if it has better contact with the base metals and silver from gold mixtures.
At the very least maybe that solution could also be recaptured for future boils to reduce expenses on the nitric acid purchases?
Breaking the gold up during nitric boils is not recommended. It causes the gold to form nano particles that suspend (or even worse colloidal gold) making separation of the silver solution difficult.
@@sreetips interesting. Didn’t know that but it’s good to know. What about recapturing some of that mixture for future nitric boils? Can you do that or is it too far gone by that point despite the vigorous reaction after pouring off the nitric boils from 2 and 3?
I save the final nitric boil and I’ll use it to do the first nitric boil in my next batch.
That bar is perfectly shaped, and one of the best so far despite the little bit of scale. I know that it is a sin to covet, but I'll deal with the guilt anyway.
all your experience is showing your professionalism is what makes you successful and I always learn something new with every refining process you make available to us you are a treasure for my own aspirations in gold refining and a I am so glad you take the time to share your knowledge with us...thanks sreetips
That was a beautiful pour. Well done sir.
Great. Thank you ...😀
Another beautiful bar! Even though your videos are longer than pretty much everyone, I still watch every single minute of every single one. Thanks for the content sreetips. Glad I found this channel recently 🙌
I would gladly watch (or sleep) through an hour long video! It may take me about 8 attempts to watch one, but I will do it!
Welcome and thank you!
I could watch this process again and again and again. You make this look easy even though it obviously isn't, I kinda wish this was my job lol
i always enjoy mr sreetips channel,rob
Perfect pour 👍
Questions! 1. The nitric you saved from the boils: it's obviously been 'used up' a bit, but does it lose more potency when you store it for future use? Is there a way to tell? 2. I wondered why you don't use that nitric to make Aqua Regia, and I think it's because you can't be sure of the concentration, so it might slow the reaction, is that right?
1) The nitric is still able to dissolve silver. I can tell because of the red fumes it evolves when added to the silver in my silver jar. 2) that nitric will have some silver in it. I’m trying to remove the silver so it’s best to use fresh nitric to make the aqua regia.
Very nice work. You know your system down
سلام خدمت استاد مجرب
استاد برای ریکاوری از سنگ یا خاک طلا در اکولوژیا درصد دو اسید نیتریک و کلریدریک
بطور استاندارد چقدر باشه بهتره متشکر میشم راهنمایی فرمائید
I’ve never tried to recover gold from rock or soil. I don’t have experience with it.
That bar bangin' 🔥🤟💯 sree!!!
Great video my friend thanks
Damn 5K in 10 hours Can't really complain about that lol
Amazing work, your knowledge is shining.
Wow that ended up being a beautiful bar of gold luv watching I'm saving all my scrap and what I find at estate sales I'm getting a nice little collection
You are wise to hang on to the gold and don’t trade it for declining paper dollars
You should have added more silver when enquarting....you would have saved your self a lot of nitric
I usually melt my gold mid whole it's wet so none blows away. But I do as little as 5 grams of 24k at a time. I also melt it in my graphite mold, it's easier to melt with a propane torch in the mold than in the wide open crucible dish. But I have 1/10 your skills or your lab.
I'm going to assume the 3 tubs you use to hold the scrap caret gold are stolen because they don't say Sreetips on them 😆😂😆😂. All kidding aside, another beautiful bar sir.
Where do you get all of your scrap from?
His lovley wife i think😊.
Have a nice day.
People who’s jewelry is no longer repairable or wanted. They know I buy gold. They seek me out. They believe, incorrectly, that paper dollars are more valuable than gold.
Hello sir how are you
We are miss to a new thinks of extract gold of anther juwerly and elecronic scrab we new mageic thuch of you in those thinks like this weed planents mineing mines stons sand ext...
And with all respect you friend diea
And full thanks for your dedication in your perfect work
Looks awesome!
Really nice looking Pour!
You didn't even skim the dross off of your gold and silver mix when it clearly needed it. You can remove so much trash that way before you even start the refining process.
at 20:00 you have the most beautiful solution. It's like a rich scotch whisky. Amazing job.
That may be the most perfect bar I have seen you pour yet! Nice!
Preheating the mold is key.
It’s mind boggling to think how mankind ever figured out how to do all of this stuff. Much trial and error I’m sure
I gotta stop watching these videos. It makes me want to buy all the equipment and everything I need and start a new hobby lol. Very very cool
In todays gold price that’s $7,040.25 USD.
HI Sreetips, thanks for the video! have a quick question if you don’t mind. I have some scrap with platinum group metals. Is it correct that the palladium would come off with the nitric acid boils? Further does the SMB precipitate platinum or does it selectively precipitate the gold?
Palladium is soluble in hot nitric. But don’t expect a clean separation. Some of the platinum will dissolve along with the palladium. Some of the palladium will remain in the platinum. SMB is selective for gold, but traces of PGMs will come down with the gold if they are present.
I always like after the pour how the gold forms up to look like a fingerprint.
Damn bro! 267 views 15min
I know. Refining is a narrow - interest topic. But I’m grateful for what has been granted to me. May I use it wisely.
5 nitric boils, holy mackerel!!!
That’s what I say every time I get that beautiful clear and bright chloroauric acid solution after dissolving in aqua regia and filtering. Those five nitric boils do a fantastic job of removing the other metals from the gold. Inquarting with silver, then parting with nitric boils; one of the most valuable refining techniques I’ve ever learned. Second only to incremental nitric dosing.
Hey Sreetips just wondering why you don't use Urea to neutralize aqua regia before SMB?
Because the pro refiners I learned from told me not to use urea. They said sulfamic is better. But if you’ve got the time, evaporation is second best, incremental nitric dosing, adding just the right amount of nitric, is best of all.
@@sreetips Thanks for the reply and the tips. Keep the Vids coming.
Are those numbers that you use for each different karat that you multiply to get the amount of silver constant. Such as 14k you multiply by 1.265 and 10 you multiply the amount of 10k by .635?
Yes
Does anyone know how much it would cost to pay someone to do this process? Looks complicated
great evolve in you're melting methode professor now it's perfect :)
You should try and make your own nitric prob save 75% on nitric cost and would be awsome to see
And he would lose it again on labour costs, making nitric is time consuming.
If something happens and I can’t buy it anymore then I’ll probably learn how to make nitric acid. But until then it’s more convenient to buy it.
Sreetips, been a little bit, I hope all is going spectacular
I just poured a .4kg copper ingot but wow look at that gold
I was amazed that you only did a single refining to it with "aqua regia".. Unless you did a couple more off camera.. Nice Chunky Bar..
Thank you for sharing.. Always a delight to watch...
No, that was once through the grinder. A second refining would have removed that little bit of surface discoloration.
The Master at work 👍🏻👏🏻🇩🇰
Hi my name is Jaime. I have a container full of plated jewelry. Includes watch casings watch bands lots of chains necklaces pocket watches charms...... would you be interested in purchasing or refining and splitting the end result. Let me know. Some silver too
Hello, thanks for the offer, but this is my hobby. I’m not a professional refiner. My business partner (and wife) has made me promise to only work on my own material, stuff that we find together at local sales. I must honor my commitment and respectfully decline. Thank you for your interest.
Hello, I find your videos fascinating; I am a subscriber and I watch them all. I have a question for you, if I may. Have you ever thought of refining gold by the Wohlwill process as some industrialists and jewelers do?
Yes, I have a couple videos of it on my channel. Just type “wohlwill” into the search block on my channel.
I know you have mentioned a book that you go to when it comes to precious metal mining and recovery. I think it was wrote in the 1930's I thought. I can't find the video awhile back you showed it or remember the name of the book. Any chance you know what book I'm trying to remember? Any help would be greatly appreciated. Thanks
Refining Precious Metal Wastes by C.M. Hoke free PDF download all over the internet.
Hi Mr. Sreetips,
Avid watcher here from Germany.
Almost two weeks have gone by since your last video.
I hope Mrs. Sreetips and you, as well as your family is doing fine.
All is well, new video uploading right now.
Im sorry its my first time watching a video like this and i have no clue whatsoever about this fascinating proces.
I have a question, maybe somebody can explain, why add the silver to the gold when melting to than chemically remove? It again ... i dont understand why not melt gold en remove silver thats present in the jewelery to get pure gold or doesnt it work like this ? Thank you
For the best example please search my channel for “urban mining mother lode” in that video I demonstrate why we add silver by placing my 14k wedding band in the boiling nitric with the inquarted gold. It (my 14k band) remains unaffected while the nitric penetrates into the gold that’s been alloyed with additional silver. If a picture is worth a thousand words, then a video is worth a million.
I can’t remember if you’ve tried using some cement silver to in-quart. I was just wondering how well that would work since where I am it’s not an easy task to find sterling and most of the silver is just plated. Would the need of nitric acid be reduced since the amount of copper, zinc and tin would be reduced to almost nothing?
Cement silver can be used but it’s not recommended. Palladium follows the silver and builds up causing problems in the silver cell. Clean copper can be used in place of silver.
Hi I'm just wondering what stops the reaction ? As there is excess nitric in the liquid , if it's the concentration of the base metals in the liquid then could you add more water at this point to continue the reaction, don't know whether it's worth doing, I suppose you could try plating out the base metals electrically but that would be a race as the nitric would try to push it back into solution ,
I'm curious about that as well. Commenting for a notification if anyone answers.
Nothing is stopping the reaction. He had 99.75% of the base metals removed after the second nitric acid boil. The third was to clean it up, the fourth was to ensure a clear liquid remained. I would have considered the 5th that he did excessive, and the amount of nitric he used in the 4th and 3rd to also be excessive. But that was on purpose due to his desire to go quickly.
The second has some excess nitric in while the sponge still contained a small trace of base metals due to the dissolveability of the silver nitrite in water, yeah you are correct. While it wasn't saturated by any means, it was close enough that the rate of dissolution was slowed.
So functionally this video was showing that you can go faster and get the job done well at the expense of consuming double the normal amount of nitric acid you actually have to use if you take it slow. But given the fact he used less than what, $12 more nitric than he strictly needed to and saved himself like 6 hours of reaction time, that's easily worth the trade off. He prob buys that 67% stuff 10 liters at a time so it's really not that expensive. Less than $25 a liter.
I had a reaction to stall just yesterday.. Thought reaction was done, took it off the heat and suddenly it ran away over 10 seconds after i moved the beaker.. Luckily no boil overs.
As the nitric gets consumed, it can’t penetrate as well as fresh nitric can. Still some active nitric left in there but it doesn’t have the punch to make it any further into the inquarted gold. So I dump it out (even though there’s still active nitric) and add fresh to get nearly all the silver and base metals out.
Nitric is notorious for that; delayed runaway reaction and boil over.
I wonder how many stanis test strips it would take to recover a decent amount of gold that would be an interesting video... but this bar came out beautifully
??? What is the difference between 67% nitric lab grade and 68 to 70% acs reagent nitric for processing silver and gold.
Your gold bar is one of your best looking.
ACS means American Chemical Standards meaning that an assay was performed and certified purity to certain standards. Industrial grade (technical grade) just means it hasn’t been tested as rigorously
I realize this video has nothing to do with the silver recoveries you do after processing your gold after enquartation. However, I noticed after you cement out the silver and you are trying to wash off the copper nitrate. Have you ever thought of vibrating the buchner funnel while rinsing instead of stirring? You might be able to rinse off the copper nitrate more efficiently if you vibrate the funnel while rinsing???
I have not. But my guess is that I would cause the tiny bits of silver powder to compact and inhibit flow through the filter.
I have a suggestion for you: instead of casting shot, dumb your inquarted gold on a piece of polished stainless, and roll it down to les than half a millimeter, then cut strips of this to be dissolved in the acid.
I don't know if this has been suggested before but it may make it easier for the acid to work it's magic rather than with chunky shots.
That’s a good suggestion, but it’s a lot of work. I’d rather let the acids do all that work while I watch a movie!
With those amounts of gold, it would be nice when you would dry it before melting. The collor change of the gold is just sooo mesmorising… Aspecialy when it’s this pure, like you always menage!! Cheers Jo-Z
Good chemist. Love the lab notebook
What would be the return on 615 pairs of 14k gold plated sterling silver hoop earrings. They weigh 2.7 grams a hoop
Depends on the thickness of the gold over the silver. No way to really measure it. I did some gold plated silver a while back. But I can’t remember the yield.