I was already sold on inquartation!! This was a GREAT demonstration on why inquarting is so necessary!! I've seen several others just do aqua regia method. When I saw the how clear the solution was that's all I needed to know!!! In fact you're the only person I've seen use inquarting method, but you're also the only person I've seen do karat scrap! GREAT VIDEO, keep up the AWESOME WORK!!!!!!!!
Most other videos I've seen they just make an arbitrary mix of aqua regia to do this and then ending up having to netralize it before dropping the gold out (I seem to recall urea can be used for this) or add the sodium metabisulfite very slowly to avoid having it go into thermal runaway. This seems like the better way to do it and it also saves on the nitric acid which can get pricey if you use a lot of it.
Thank you for your videos they close the gap between theory and practice. I just did a couple of things which seemed to work quite well (because it was in front of me) .... I used an ultrasonic cleaner (that I use for clocks) rather than heat to promote the reactions. This can simply be turned off if things get over excited whereas you can’t just make a system cold if driven by heat. The other thing that I have done instead of using caustic soda to neutralise things is to simply use some limestone gravel from the drive. This costs nothing and just sits there bubbling away until the acid is used up. This eliminates vigorous reactions and leaves the ph of waste solutions right where you would want them to be Many thanks once again for your efforts and I hope that my observations may either help or amuse.🇬🇧
Now this is true chemistry very understandable and I almost made the same mistake without adding the silver to it thank you for your for phonomenal videos your talent your skills of chemistry is unbelievable
Gray sediment with the gold, some stuff precipitating after filtering... adding water to the filter probably precipitated some silver chloride. In concentrated chloride solutions, silver chloride actually is somewhat soluble. If you dilute such a solution the silver chloride will precipitate. That is one reason to dilute a gold chloride solution before filtering. Chilling the solution will also lower the solubility of silver chloride.
Yes, the solution turned cloudy after I rinsed the filter. The extra water made the silver chloride come out of solution. I should have poured it back through the same filter paper a second time.
Your gold dropped in that first filtration due to higher concentration auric acid soln mixed with lower concentration, the auric acid dropped goldin favor of free copper etc from the other solution.
First for sharing these great videos. I'm recovering gold from a dirty solution... I didn't rinse the precipitated gold with DI water to remove the excess Sodium Metabisulfite (which seems to be a lot) and now have a hard time to melt tje gold. What would it be a normal melting time using a MAP/PRO Bernzomatic torch?
If anyone wonders why you use silver for the inquartation. Silver has an atomic weight of 108g/mol vs Copper 63,5g/mol. That means that in 1g copper, you have almost 2 times as many atoms as in 1g of silver. By using silver, you are saving nitric acid, because you have to dissolve less atoms. Hope that helps.
Thank you so much sir for your wonderful video, today I've successfully completed my gold recovery by watching your video and also you reply my comments. Thank you so much sir
The initial gold drop could have been from some zinc present in the initial 10k and 14k gold. That would precipitate out the gold or even high concetration of copper in the solution
Place 2 layers of newspaper on the surface of your cooling water then pour the molten metal into a puddle at the center, it cools into a button before burns through.
I hope you would do for us a video. They’re are many people selling pay dirt to pan all over, what happens when you add aqua regia to it? Rip-off or profit?
Thanks for the video Senior Chief. I’m sure that you have but did you ever substitute nitric acid with sodium nitrate? That looks a lot cheaper then the nitric acid
Is there a considerable weight difference between the solution at different colors? When you hold that beautiful gold beaker is it noticeably heavier? Love your videos
What to you use to percipitate the silver from your used nitric acid? I can't believe I haven't seen your method yet, especially after watching so many videos. Do you just use a copper push bar? Or do you use a chemical for silver precipitation? I've refined so much gold in Poormans AR over the years, all without inquarting sadly. And I neutralized the solution with Urea. And never recovered the silver, never even tried to. Now I want to inquart, and I see how you use Nitric just to dissolve the silver and other alloys before the gold sees AR. I'm just curious about the best way to get the silver back. Is it really as easy as putting a copper bar in the dilute, or used nitric just to cement the silver out? And I imagine it's a silver chloride that requires more than just a rinse and a melt to come back to metal form. Any info would be great. Thanks for all you do, you are a phenomenal teacher. 🙏
I add clean copper to silver nitrate and the silver comes out of solution, as the copper goes into solution, in accordance with the reactivity series of metals. But first, I add more sterling silver and some heat, to consume any excess nitric before adding the copper. Excess nitric in the silver nitrate will needlessly consume the copper that’s intended to cement the silver out. Silver chloride is a totally different process.
I love your videos because you talk to us intelligently in step by step methods. I question inquartation, the need to add silver in to weaken the percent of gold, because you then end up needing to use 5-10 times more Nitric acid than you need. A simple solution would be to just melt the metals first and turn it into cornflakes or shot. Spreading out the metals into thinner pieces with more surface area would allow you to get to both the gold and silver. Another way would be to simply just grind the metals into shreds or powders. The other barrier I learned from you is that if you add HCL to Silver first it creates Silver-Chloride, an insoluble material that shields and stalls the chemical reactions. Again, a constant blending of the materials is needed to get into the center metals. Could electrolysis help to pull the silver-chloride ions away somehow? I like the sulfuric-electrolysis method. Creating a giant cell made of lead or stainless steel, like you do in the creation of pure silver, it can pull different metals away at different levels of density. Am I just dreaming?
Yes. I am watching another few of your videos thinking about why you do it and because you like the silver you are actually doing two jobs at the same time. I only wonder however, are you just adding impurities from the silverwares into your gold. Bu I also see how much you refine and double refine until it is clear. Good job. Thank you again. @@sreetips
Wouldn't it be possible to use LED instead of silver? So when melting the led with the gold + base metals, the led pulls the base metals out leaving pure gold in the center?
Again I wannah say:" I love your new camera. It has the same resolution but the picture is much clearer and I enjoy your video's AND mother nature (that's what it is) more.
Would it also be possible to precipitate the dirty solution and then treat the precipitate with dilute nitric acid (like should have been done to begin with) and then proceed with the rest of the refining process? I would assume some people who make this mistake dont have extra silver laying around or maybe they're not working with scrap jewelry. Love the videos!
Thanks for this video! I really enjoy your gold refining videos! I have to solve my orange solution that did not drop any gold. I dissolved 150g of green fiber cpu pins straight in AR...after pouring several spoons of SMB (after denoxing with urea) gold did not drop. I put some copper in the solution. after 2 days it is still dropping some black junk. Have any tips? Thanks a lot!
Aqua regia will turn orange all by itself even though there is no gold in solution. My guess - you had such a tiny amount that the yield is nil. A common beginner mistake.
@@sreetips I don't know if it's tiny amount from 60 cpu's. But I got the mud first time. After trying to refine the mud from the first AR, I poured a lot of smb with no denoxing and turned red. I assume there are lead salts dissolved in solution.
2 days ago I did exactly what you said we shouldn't...I put straight into aqua regia any and all gold plated pins and PCBs etc . Yes I now have a big mess. My only hope is to SMB the entire debacle, get whatever metal is there and find the gold again!
Do you typically use one type of hydrochloric acid to dissolve and a different type to precipitate? Or do you use a CS reagent type hydrochloric acid 34%?
Thanks for another great training session Senior Chief. Can't get enough of you accurate, precise and informational videos!!! Mike Myers BTC(SW/AW) USN(Ret.)
I really enjoyed the video, but you could have made it better, since you offered no alternative to traditional SMB reducing method. For this kind of mistake the best reducing agent in FeSO4 (a.k.a copperas) because SMB can and will reduce everything in solution, this includes silver and copper ions that may be present. It shouldn't be a major issue since there should be little of both in solution, still to people that struggle to get their hands in SMB (like me) copperas comes as a common, cheap and preferable alternative. But a second refining step should be done, this time with a better reducing agent such as SMB or oxalic acid + sodium hydroxide to get rid of small iron impurities. Keep up the good work mate! Cheers
Hey there Mr. Sreetips! First off, just wanna say… big fan. You’re the man. I’ve found an invaluable amount of information through your works. Big thanks! I got a question for you. Let’s say someone decided to do their first refining, and somehow he stupidly throws a steel chain in the mix thinking it was silver, and somehow never noticed when he inquarted it. He then continues with the hot nitric boils, and dissolves less than half of the chain… I’m wondering if I should filter, then precipitate, and just start over? Would I have to do a hydrochlor boil to remove the iron ions? Idk… 😅😢 I’m stumped. Any advice or tips would be greatly appreciated.
I’ve had steel pieces in the dish during inquartation. They have a much higher melt temp and won’t melt so I just reach in with tweezers and put it out. But what you’ve described is something I’ve never encountered. We want to keep HCl far way from inquarted gold. Forms insoluble silver chloride and that’s not good.
I understand that dissolving karat gold directly in AR is a bad idea for several reasons, but is there any reason not to dissolve gold filled scrap in AR before precipitating the gold as a concentrate (and then inquarting)? I do not have access to large amounts of clean nitric acid, but I do have nitrate salts.
Don't do it! Trying to dissolve gold filled scrap directly in AR would put EVERYTHING in solution and make a very dirty solution. It's difficult to get the gold from a dirty solution. Have a look at my latest gold filled refining video - my best ever. I don't see any way to refine gold filled scrap with no nitric acid.
@@sreetips I'm not trying to directly recover pure gold from the dirty AR solution-- I just want to remove a good chunk of the base metals so I don't need as much nitric acid for the real purification by inquarting with silver. The goal is not to completely eliminate the nitric acid (I can make that by distillation), but to reduce the amount needed. Is this still a bad idea?
I use as much nitric as it takes to remove as much silver and base metals as possible from the inquarted gold. I've never tried to refine any material using minimal nitric. In refining, the longer the treatments with nitric acid, the fewer problems later on during the rest of the refining process. I don't know if your idea is bad or not. It's not something that I would try to do.
when i added the SMB to my dirty solution, nothing precipitated. it didn't even fizz (i assume because of so much copper). I've reduced it down to a sludge, but I'm not sure whether I should go straight to nitric acid or hydrochloric. funny thing though, i got the gray sludge like yours, but BEFORE adding the SMB.
Who knows what metals lurk in the alloys of men. This is why I inquart and part with dilute nitric boils. Completely eliminates all the problems associated with trying to get the gold from dirty solutions.
@@sreetips The only quick (and dirty) way to get gold from such a dirty solution is by cementing it out on silver (after getting rid of superfluous nitric). On a positive note, that should get it close to 999 already.
@@sreetips I must admit it is much more clean and the end result outstanding, but strictly from my point of view much more elaborate. I do appreciate all the info that is available on your channel and the in depth explanations.
I seen others inquart the gold with copper - then use the silver to make into money ;) Any reasoning for either over the other - besides selling the silver ?
I was able to dissolve all the gold flakes by using aqua regia but when i dropped it with Stump Out, i got a blood red material that floated and sat at the bottom. This happens every time I attempt to precipitate gold from solution. Any idea why the Stump Out is turning red and not dropping the gold?
@@sreetips I am going to try to melt it today since I have acquired enough for it to melt into something. I made not have cleaned it properly prior to dropping it. hopefully it is due to standing material mixed with the gold. I will inform if i was successful or not later on. thankyou
You add the sodium Metabifulfite like it isn't choking you to death and you never want to use it again( even outside) just need to know how that's accomplished.
If too much silver is added then the gold will crumble into a powder. Then getting the solution separated from the powder becomes difficult. If too little silver is added then the nitric won't penetrate and dissolve the metals out. Adding the right amount results in chunks of gold that hold together during nitric boils making pouring off the solution a breeze.
Any suggestions? I have a dirty solution of copper, gold and gold jerlery alloyed metals, most likely silver and zinc mostly, I added hcl by mistake, (no lable)🤔 when I was dissolving base metals, I need to extract any gold that may have dissolved but all that perciputated looks like a mix of smb and copper cloride? I don't know, is there a way to remove gold and recover from this newbie mistake? Please share your wealth of knowledge
I did a successful run with a yeild of just under 4g nearly pure, I'd say 23k, but this time I was exited and rushed, if I can recover from this mistake with some help, I will take these lessons and learn from them. I really respect your work, and hope you will take me into consideration as a new refiner
You added HCl by mistake. If it were mine, id pour the whole mess into a filter and get all the solids filtered out. Then I'd put the solids, filter and all, into a melt dish, cover with a 50/50 flux of sodium carbonate and borax. Then I'd try like the dickens to get it melted into a button. Then I'd determine the karat of the button, inquart with silver or copper, and start the nitric treatments over. If it were mine.
@@sreetips ok so suposen I just saw your suggestion and I ignorently went on with the dissolution of gold, tho it was a long and painful weekend of improperly colored mess, I got the gold to mostly dissolve into a golden green liquid, left with a whiteish yellow semi solid in the shapes of my inquarted gold. Soft and spongy tho it SHOULD BE DISSOLVED, what a disaster, my first run was so smooth I must have relaxed far to much. This is entirely my doing and I truly appreciate your pitty. Thanks for the tips, I now know what to do, start over. Ill melt up what's left and see what's going on, it looks like some chloride husks, you would cringe. I'm ashamed
You make this look easy, let me tell any viewers that have any misconceptions about your proses. It's long exausting, tidious and.... misspelled. BUT it's amazing and worth the troubles for the self satsisfaction I got a taste of on the first run. This stuff is worth respect. Especially to someone who has it so easily spelled out including the production Proses. Cheers 🍻 sreetips, here's to one day hoping I too can make it seem easy
Capt. I'm trying to keep the length down. I have a single client that buys my gold. He makes "grilles" for teeth. I melted the gold and poured into water to make granules. He buys small quantities from me so I keep about an ounce of small pieces to sell to him.
I know this question is odd but can you do a video on poor mans aqua regia for those who have s hard time obtaining nitric acid. Thanks for all the educational videos
The solution is called chloroauric acid. If you evaporated off all the liquid then you'd have anhydrous chloroauric acid. Nerd Rage did it with platinum (chloroplatinic acid) but I think gold will do the same thing.
sreetips Gotcha... Thanks for taking the time to reply to my comment! I’m a new subscriber and I find chemistry videos fascinating. I look forward to seeing your future projects.
What turned the solution black? Good question. It was, no doubt, a base metal. Inquarting with silver then parting with nitric acid is one of the most valuable refining techniques I've ever learned.
dear sir. Please I recovery gold by cyanide from board scrap .l put about 20 kgs of scrap board in water and add about one kg of Cyanide . After one day all gold in boards dissolve in solution, and the solution turn into brown colour, then l filter it ,then l add zinc Powder into the solution ,then I filter the precipitate Powder and add to it sulfuric acid. some of brown powder was remains , I think it gold , but when i refining it by aqua Regia the solution turn into green . and when i detect it by stannous chloride there no anything. Please what's mistake thanks
My smb is not dissolve in gold solution (aqua regia) it is bubbling but after the reaction get over all the smb powder gathered in the bottom, and it is white in colour not brown or dark, what is the problem sir
What was your material? Was there gold in solution? Did you test with stannous? How much gold expected? Did you inquart? Was there other metals in solution? Did you premix the AR? The list of questions goes on and on. There are too many variables. I couldn't begin to help because I don't know what you have there. My guess is that you tried low yielding plated scrap and you probably never had any gold in solution to begin with. A common beginner mistake. I know this because I made the same mistake the first time I tried to refine some metals. I think that my first post with pictures is still on the goldrefiningforum.com my user name there is kadriver - check it out!
I logged on to the forum and found my first post from ten years ago. Please read it and the answers that I got back from the people who helped me; goldrefiningforum.com/phpBB3/viewtopic.php?f=37&t=8208&p=76616#p76616
No, the solutions are dirty because of all the base metals being dissolved with the gold. If the silver and base metals are removed first by inquarting with silver or copper, then parting with hot nitric, then the solution will be clear and orange with only the gold in solution.
Its a ten liter plastic bucket. It's full of copper. The waste is bubbled with air and any precious metals cement out on the copper. After a few days the solution, now devoid of precious metals, and full of copper, is transfered to my waste treatment bucket. It's full of angle iron. The copper cements out on the iron and the copper metal is thrown away. The resulting acidic iron solution is treated with sodium hydroxide. The metal hydroxides are filtered out and disposed of. The caustic solution is adjusted to pH7 and disposed of. Nothing toxic ever gets poured down the drain.
If you add the right amount of nitric, only enough to just dissolve the gold, then there won't be any nitric to denox. But if we accidentally over shoot and add too much nitric then we don't use urea to kill the excess nitric. We use sulfamic acid. That's what I was taught by professional refiners on the goldrefiningforum.com
I've never tried it so I don't know. Usually the amount of gold from escrap is so small that inquarting would be overkill and difficult. If you had a nice button of gold from escrap recover built up over time and you wanted to purify it then inquarting should work.
@@sreetips yeah, it takes a lot of e-scrap to get much gold. But there are easy mechanical ways of separating out the gold bearing parts. Such as your video you made about the ram fingers. I think you said it took too much acid and created to much waste to get the foils separated from the fingers. You can separate the foils faster and easier with no waste mechanically with one of those wood burning art pens (like soldering iron). The foils are about 5% gold and probably could be refined easily from there. There are also mechanical ways of getting the gold out of ic chips.
@@xdebugxDotNet Have you been watching E.Waste Ben's Channel?? That's exactly what he does. He takes the ram and slot cards, heats up his modified soldering tool and he has the fingers off in 1 to 2 seconds!! He had his essayed and it only turned out to be 3%, but that's pretty good considering it's ewaste. That's 10 to 100 times better than what I've seen pins melted and essayed. Have a GREAT Day!!
I was already sold on inquartation!!
This was a GREAT demonstration on why inquarting is so necessary!!
I've seen several others just do aqua regia method. When I saw the how clear the solution was that's all I needed to know!!!
In fact you're the only person I've seen use inquarting method, but you're also the only person I've seen do karat scrap!
GREAT VIDEO, keep up the AWESOME WORK!!!!!!!!
Inquarting is right next to incremental nitric dosing. Two of the most valuable refining techniques that I've ever learned.
Most other videos I've seen they just make an arbitrary mix of aqua regia to do this and then ending up having to netralize it before dropping the gold out (I seem to recall urea can be used for this) or add the sodium metabisulfite very slowly to avoid having it go into thermal runaway. This seems like the better way to do it and it also saves on the nitric acid which can get pricey if you use a lot of it.
Comment worth Pinning.
Shane York Cody’s Lab has done it. He had a precious metals refining series a few years ago. Nowhere near as in depth as Sreetips though.
@@matthewf1979 Sreetips is pretty dang good. It would be hard to imagine anyone being more in depth than Sreetips!!!
Have a GREAT Day Matt!!
I wanted to thank you for that video! And to thank you for all of your time making all these videos youve made for all of us!!
Thank you for your videos they close the gap between theory and practice.
I just did a couple of things which seemed to work quite well (because it was in front of me) .... I used an ultrasonic cleaner (that I use for clocks) rather than heat to promote the reactions. This can simply be turned off if things get over excited whereas you can’t just make a system cold if driven by heat.
The other thing that I have done instead of using caustic soda to neutralise things is to simply use some limestone gravel from the drive. This costs nothing and just sits there bubbling away until the acid is used up. This eliminates vigorous reactions and leaves the ph of waste solutions right where you would want them to be
Many thanks once again for your efforts and I hope that my observations may either help or amuse.🇬🇧
thank you this video was helpful i had unfortunately forgotten this step of nitric as it was my first time trying to dissolve gold.
I don't see why anyone ever down thumbs down one of your videos. This is good honest experimentation with informational results we can see.
Now this is true chemistry very understandable and I almost made the same mistake without adding the silver to it thank you for your for phonomenal videos your talent your skills of chemistry is unbelievable
Gray sediment with the gold, some stuff precipitating after filtering... adding water to the filter probably precipitated some silver chloride. In concentrated chloride solutions, silver chloride actually is somewhat soluble. If you dilute such a solution the silver chloride will precipitate.
That is one reason to dilute a gold chloride solution before filtering. Chilling the solution will also lower the solubility of silver chloride.
Yes, the solution turned cloudy after I rinsed the filter. The extra water made the silver chloride come out of solution. I should have poured it back through the same filter paper a second time.
Your gold dropped in that first filtration due to higher concentration auric acid soln mixed with lower concentration, the auric acid dropped goldin favor of free copper etc from the other solution.
First for sharing these great videos. I'm recovering gold from a dirty solution... I didn't rinse the precipitated gold with DI water to remove the excess Sodium Metabisulfite (which seems to be a lot) and now have a hard time to melt tje gold. What would it be a normal melting time using a MAP/PRO Bernzomatic torch?
If anyone wonders why you use silver for the inquartation. Silver has an atomic weight of 108g/mol vs Copper 63,5g/mol. That means that in 1g copper, you have almost 2 times as many atoms as in 1g of silver. By using silver, you are saving nitric acid, because you have to dissolve less atoms. Hope that helps.
Thanks, dude! Explained beautifully, much appreciated.
Sir how many attempt doing gold, recovery it's same gram and purity plz tell me sir thank you have nice day
Are you saying you can use copper to clean a dirty solution?
Thank you so much sir for your wonderful video, today I've successfully completed my gold recovery by watching your video and also you reply my comments. Thank you so much sir
The initial gold drop could have been from some zinc present in the initial 10k and 14k gold. That would precipitate out the gold or even high concetration of copper in the solution
TOO Funny, you sound so pissed you did it to show not what to do. Love you stuff keep it up, thanks
Place 2 layers of newspaper on the surface of your cooling water then pour the molten metal into a puddle at the center, it cools into a button before burns through.
Thank you for your videos it definitely is verry educational and got me started my first batch I will be doing from computer scrap have a great day
how did you precipitate the gold without denoxing ?
Hello sir,
The same procedure we can try with jewellery factory dirt or soil
Awesome vedio
Plz share the next vedio
hi dear friend
I miss your useful tips & pro videos i repeat many of your way for recycling gold & it was successful .
big thanks for you.
I'm glad that it helps hamed, thank you.
I hope you would do for us a video. They’re are many people selling pay dirt to pan all over, what happens when you add aqua regia to it? Rip-off or profit?
hi...just need to know how long the whole experiment take from start to finish
Thanks I'm going back to some old solution an see if I missed anything.
This video might just have saved my ass. Thank you sreetips!!!
How about a couple of HCL treatments before the HNO3 ones. So that all the metals except copper,silver,gold etc be removed first.Any impurities too.
Thanks for the video Senior Chief. I’m sure that you have but did you ever substitute nitric acid with sodium nitrate? That looks a lot cheaper then the nitric acid
I’ve never tried sodium nitrate.
Is there a considerable weight difference between the solution at different colors? When you hold that beautiful gold beaker is it noticeably heavier? Love your videos
I can't tell a difference
What to you use to percipitate the silver from your used nitric acid? I can't believe I haven't seen your method yet, especially after watching so many videos. Do you just use a copper push bar? Or do you use a chemical for silver precipitation?
I've refined so much gold in Poormans AR over the years, all without inquarting sadly. And I neutralized the solution with Urea. And never recovered the silver, never even tried to. Now I want to inquart, and I see how you use Nitric just to dissolve the silver and other alloys before the gold sees AR. I'm just curious about the best way to get the silver back. Is it really as easy as putting a copper bar in the dilute, or used nitric just to cement the silver out? And I imagine it's a silver chloride that requires more than just a rinse and a melt to come back to metal form. Any info would be great. Thanks for all you do, you are a phenomenal teacher. 🙏
I add clean copper to silver nitrate and the silver comes out of solution, as the copper goes into solution, in accordance with the reactivity series of metals. But first, I add more sterling silver and some heat, to consume any excess nitric before adding the copper. Excess nitric in the silver nitrate will needlessly consume the copper that’s intended to cement the silver out. Silver chloride is a totally different process.
@sreetips thank you. A screenshot was taken, and these words will go into my notebook 🙏
I love your videos because you talk to us intelligently in step by step methods. I question inquartation, the need to add silver in to weaken the percent of gold, because you then end up needing to use 5-10 times more Nitric acid than you need. A simple solution would be to just melt the metals first and turn it into cornflakes or shot. Spreading out the metals into thinner pieces with more surface area would allow you to get to both the gold and silver. Another way would be to simply just grind the metals into shreds or powders.
The other barrier I learned from you is that if you add HCL to Silver first it creates Silver-Chloride, an insoluble material that shields and stalls the chemical reactions. Again, a constant blending of the materials is needed to get into the center metals. Could electrolysis help to pull the silver-chloride ions away somehow? I like the sulfuric-electrolysis method. Creating a giant cell made of lead or stainless steel, like you do in the creation of pure silver, it can pull different metals away at different levels of density. Am I just dreaming?
Sounds good, but instead of grinding the metal into tiny pieces, I’d rather alloy it with silver and let the chemicals to do all that work for me.
Yes. I am watching another few of your videos thinking about why you do it and because you like the silver you are actually doing two jobs at the same time. I only wonder however, are you just adding impurities from the silverwares into your gold. Bu I also see how much you refine and double refine until it is clear. Good job. Thank you again.
@@sreetips
Wouldn't it be possible to use LED instead of silver? So when melting the led with the gold + base metals, the led pulls the base metals out leaving pure gold in the center?
We want to keep lead away from the gold. Lead, in just trace amounts, ruins the malleability and ductility of gold.
Again I wannah say:" I love your new camera. It has the same resolution but the picture is much clearer and I enjoy your video's AND mother nature (that's what it is) more.
Useful information. Thank you.
Would it also be possible to precipitate the dirty solution and then treat the precipitate with dilute nitric acid (like should have been done to begin with) and then proceed with the rest of the refining process? I would assume some people who make this mistake dont have extra silver laying around or maybe they're not working with scrap jewelry. Love the videos!
I made this video to show what not to do
You always "precipitate out" the lead during the AR treatment, but when do you remove it?
During filtering
Thanks for this video! I really enjoy your gold refining videos! I have to solve my orange solution that did not drop any gold. I dissolved 150g of green fiber cpu pins straight in AR...after pouring several spoons of SMB (after denoxing with urea) gold did not drop. I put some copper in the solution. after 2 days it is still dropping some black junk. Have any tips? Thanks a lot!
Aqua regia will turn orange all by itself even though there is no gold in solution. My guess - you had such a tiny amount that the yield is nil. A common beginner mistake.
@@sreetips I don't know if it's tiny amount from 60 cpu's. But I got the mud first time. After trying to refine the mud from the first AR, I poured a lot of smb with no denoxing and turned red. I assume there are lead salts dissolved in solution.
2 days ago I did exactly what you said we shouldn't...I put straight into aqua regia any and all gold plated pins and PCBs etc . Yes I now have a big mess. My only hope is to SMB the entire debacle, get whatever metal is there and find the gold again!
Gold plated MUST be run thru a sulfuric acid stripping cell
@@sreetips what does this stripping cell do?
@@ashwynn4177 did you ever figure out what the stripping cell did? I guess I could just Google it lol
@@matthewnicholson2699 No unfortunately I didnt.
what did you test it with 5:32 ? that drop you did put on the white paper ?
Stannous chloride testing solution.
Freakin love this guy. Very intelligent man
Do you typically use one type of hydrochloric acid to dissolve and a different type to precipitate?
Or do you use a CS reagent type hydrochloric acid 34%?
The bottle says 31.45% from the hardware store.
Thanks for another great training session Senior Chief. Can't get enough of you accurate, precise and informational videos!!! Mike Myers BTC(SW/AW) USN(Ret.)
BZ Michael to you and yours
I really enjoyed the video, but you could have made it better, since you offered no alternative to traditional SMB reducing method. For this kind of mistake the best reducing agent in FeSO4 (a.k.a copperas) because SMB can and will reduce everything in solution, this includes silver and copper ions that may be present.
It shouldn't be a major issue since there should be little of both in solution, still to people that struggle to get their hands in SMB (like me) copperas comes as a common, cheap and preferable alternative. But a second refining step should be done, this time with a better reducing agent such as SMB or oxalic acid + sodium hydroxide to get rid of small iron impurities.
Keep up the good work mate!
Cheers
Metastannic acid from the Nitric most likely. great vid, thanks!
Man I wish I had a guy like u living near me.
Brother I enjoy your videos. Have you thought about using diesel exhaust fluid to get rid of excess nitric acid?
No I haven’t. I usually don’t have much excess nitric.
Hey there Mr. Sreetips! First off, just wanna say… big fan. You’re the man. I’ve found an invaluable amount of information through your works. Big thanks!
I got a question for you. Let’s say someone decided to do their first refining, and somehow he stupidly throws a steel chain in the mix thinking it was silver, and somehow never noticed when he inquarted it. He then continues with the hot nitric boils, and dissolves less than half of the chain…
I’m wondering if I should filter, then precipitate, and just start over? Would I have to do a hydrochlor boil to remove the iron ions? Idk… 😅😢 I’m stumped. Any advice or tips would be greatly appreciated.
I’ve had steel pieces in the dish during inquartation. They have a much higher melt temp and won’t melt so I just reach in with tweezers and put it out. But what you’ve described is something I’ve never encountered. We want to keep HCl far way from inquarted gold. Forms insoluble silver chloride and that’s not good.
Manteb kang... 👍👍👍
When you have the gold powder, have you done any experiments with it in the mono-atomic form?
No, I don't know anything about it.
@@sreetips Has the powder ever came out white? From maybe a stronger acid wash? I think it is the philosophers stone.
I have done that. Not jewellery but pins and boards.
I understand that dissolving karat gold directly in AR is a bad idea for several reasons, but is there any reason not to dissolve gold filled scrap in AR before precipitating the gold as a concentrate (and then inquarting)? I do not have access to large amounts of clean nitric acid, but I do have nitrate salts.
Don't do it! Trying to dissolve gold filled scrap directly in AR would put EVERYTHING in solution and make a very dirty solution. It's difficult to get the gold from a dirty solution. Have a look at my latest gold filled refining video - my best ever. I don't see any way to refine gold filled scrap with no nitric acid.
@@sreetips I'm not trying to directly recover pure gold from the dirty AR solution-- I just want to remove a good chunk of the base metals so I don't need as much nitric acid for the real purification by inquarting with silver. The goal is not to completely eliminate the nitric acid (I can make that by distillation), but to reduce the amount needed. Is this still a bad idea?
I use as much nitric as it takes to remove as much silver and base metals as possible from the inquarted gold. I've never tried to refine any material using minimal nitric. In refining, the longer the treatments with nitric acid, the fewer problems later on during the rest of the refining process. I don't know if your idea is bad or not. It's not something that I would try to do.
Nice, thank you.
when i added the SMB to my dirty solution, nothing precipitated. it didn't even fizz (i assume because of so much copper). I've reduced it down to a sludge, but I'm not sure whether I should go straight to nitric acid or hydrochloric. funny thing though, i got the gray sludge like yours, but BEFORE adding the SMB.
Who knows what metals lurk in the alloys of men. This is why I inquart and part with dilute nitric boils. Completely eliminates all the problems associated with trying to get the gold from dirty solutions.
@@sreetips The only quick (and dirty) way to get gold from such a dirty solution is by cementing it out on silver (after getting rid of superfluous nitric). On a positive note, that should get it close to 999 already.
"That wasn't actually laundry detergent. How much of it did you use?"
Just a few pinches
You did it, The magic of the video made it look easy! I know better. Thank you for your video it was awesome.
very good video! thank you
Hey is have a bunch of gold filled stuff but I don't wanna test each piece will it be a problem is some plated stuff gets in there?
Yes
!
When you have used the filter paper, where did the Sediment gold come from?!!!!!
I can’t remember.
This can be done but you need a lot more AR to dissolve everything, need filtering and then drop with Metabisulfite.
Inquartation, parting with hot dilute nitric, then refining with aqua regia is the easier softer way
@@sreetips I must admit it is much more clean and the end result outstanding, but strictly from my point of view much more elaborate. I do appreciate all the info that is available on your channel and the in depth explanations.
How to get the silver back ?
Thanks I enjoyed learning
I seen others inquart the gold with copper - then use the silver to make into money ;)
Any reasoning for either over the other - besides selling the silver ?
If silver's not available then copper will work. But I refine gold and silver so I just use silver to inquart.
Silver takes less nitric acid to dissolve than copper, thats why most People use silver. I'm always using copper and never had a Problem
@@SomeAustrianGuy Thanks guys
@@SomeAustrianGuy sir is that purity same
@@rkumar3260 yes
hey love the video keep it up i have a stainless steel watch i would like for you to dissolve and recover the diamonds for me please let me know
Wow sir Kevin. So this was your first video of which you did not use inquartation on the karat gold.
So for the solution instead of adding all of the chemicals couldn't you just smelt it? wouldn't the bi-product left be the gold after burning it?
No. Smelt is a term used to describe rendering metals for ore.
I wished id known about this video just 48 hrs ago. :(
I have a real mess on my hands now.
We got to get these videos more exposure.
Sreetips is a true chemist and a real good teacher
I was able to dissolve all the gold flakes by using aqua regia but when i dropped it with Stump Out, i got a blood red material that floated and sat at the bottom. This happens every time I attempt to precipitate gold from solution. Any idea why the Stump Out is turning red and not dropping the gold?
I’m just as baffled as you.
@@sreetips I am going to try to melt it today since I have acquired enough for it to melt into something. I made not have cleaned it properly prior to dropping it. hopefully it is due to standing material mixed with the gold. I will inform if i was successful or not later on. thankyou
No matter what happens, you’re gaining valuable experience. There’s no substitute for experience.
What do you do if you don't have any silver, is there another way to clear the solution?
Yes, you can use clean copper instead of silver
Thanks for sharing
What kind of respirator plus accessories do you use for your refining??
You add the sodium Metabifulfite like it isn't choking you to death and you never want to use it again( even outside) just need to know how that's accomplished.
Roy, I have a fume hood that draws the vapors away from me and exhausts them up a stack to the outside of my shop
@@sreetips it seems like a diy hood wouldn't be very difficult. It's literally just a good size fan and a metal box right?
What happens if you add more silver ? does it effect the process in any way other then needing more nitic in the first stage ?
If too much silver is added then the gold will crumble into a powder. Then getting the solution separated from the powder becomes difficult. If too little silver is added then the nitric won't penetrate and dissolve the metals out. Adding the right amount results in chunks of gold that hold together during nitric boils making pouring off the solution a breeze.
thanks for the reply !
Very clever and Smart 😇
Any suggestions? I have a dirty solution of copper, gold and gold jerlery alloyed metals, most likely silver and zinc mostly, I added hcl by mistake, (no lable)🤔 when I was dissolving base metals, I need to extract any gold that may have dissolved but all that perciputated looks like a mix of smb and copper cloride? I don't know, is there a way to remove gold and recover from this newbie mistake? Please share your wealth of knowledge
I did a successful run with a yeild of just under 4g nearly pure, I'd say 23k, but this time I was exited and rushed, if I can recover from this mistake with some help, I will take these lessons and learn from them. I really respect your work, and hope you will take me into consideration as a new refiner
You added HCl by mistake. If it were mine, id pour the whole mess into a filter and get all the solids filtered out. Then I'd put the solids, filter and all, into a melt dish, cover with a 50/50 flux of sodium carbonate and borax. Then I'd try like the dickens to get it melted into a button. Then I'd determine the karat of the button, inquart with silver or copper, and start the nitric treatments over. If it were mine.
@@sreetips ok so suposen I just saw your suggestion and I ignorently went on with the dissolution of gold, tho it was a long and painful weekend of improperly colored mess, I got the gold to mostly dissolve into a golden green liquid, left with a whiteish yellow semi solid in the shapes of my inquarted gold. Soft and spongy tho it SHOULD BE DISSOLVED, what a disaster, my first run was so smooth I must have relaxed far to much. This is entirely my doing and I truly appreciate your pitty. Thanks for the tips, I now know what to do, start over. Ill melt up what's left and see what's going on, it looks like some chloride husks, you would cringe. I'm ashamed
2 days from now ill have more stanus chloride, I got a bottle months ago, it's someplace...😐
You make this look easy, let me tell any viewers that have any misconceptions about your proses. It's long exausting, tidious and.... misspelled. BUT it's amazing and worth the troubles for the self satsisfaction I got a taste of on the first run. This stuff is worth respect. Especially to someone who has it so easily spelled out including the production Proses. Cheers 🍻 sreetips, here's to one day hoping I too can make it seem easy
What's the name of that beaker with nosle for filtering aqua regia
Filter flask
Why do you cool the solution before filtration ?
Is it a problem if you filter the warm solution?
Many thanks see tips. X
Silver chloride. It will come out of solution when ice is added. Then it can be filtered out.
@@sreetips thank you sir.
Hello Mr Sreetips. What filter paper are you using ? What is the description please?
Double Ring number 2
sreetips .. Thank you i sincerely appreciate the info
All that and you didn't give us a poured bar at the end?
If I din't know your videos better, I might think yer playin' with us. LOL
Capt. I'm trying to keep the length down. I have a single client that buys my gold. He makes "grilles" for teeth. I melted the gold and poured into water to make granules. He buys small quantities from me so I keep about an ounce of small pieces to sell to him.
I know this question is odd but can you do a video on poor mans aqua regia for those who have s hard time obtaining nitric acid. Thanks for all the educational videos
Ok James, I don't have any experience so I'll have to do some research first.
Watching some older videos, to avoid some "good ideas", like go directly with AR... So, it is a no-go for sure...
What would happen if instead of adding the sodium metabisulfite to precipitate the gold you just boiled off the solution?
The solution is called chloroauric acid. If you evaporated off all the liquid then you'd have anhydrous chloroauric acid. Nerd Rage did it with platinum (chloroplatinic acid) but I think gold will do the same thing.
sreetips Gotcha... Thanks for taking the time to reply to my comment! I’m a new subscriber and I find chemistry videos fascinating. I look forward to seeing your future projects.
Would you follow the same process if you dissolved gold by adding too much peroxide to your AP solution?
If gold in solution then drop it with SMB.
@@sreetips “smb” that would be sodium meta bisulphate?
Sodium metabisulfite.
Can you use copper for inquartation?
Yes, it is cleaner than silver
I mistakenly dissolved gold with HCl and sulfuric acid how can I get my gold back?
I’d try SMB if it were mine
1:12 Why's the soln black?
Can one inquart karat gold with Cu?
Yes, you can use clean copper or brass.
What turned the solution black? Good question. It was, no doubt, a base metal. Inquarting with silver then parting with nitric acid is one of the most valuable refining techniques I've ever learned.
You are using 20% muriatic acid. You need at least 30%.
How to make 10 g 24k gold? Not riffining (criativ)
Do u mix your silver and gold filters
Yes, I used to separate but they all get thrown together.
Wish I had that gold to do my gold cell
How to precipitate metal gold in Aqua regia?
Add SMB
@@sreetips SMB?
dear sir.
Please I recovery gold by cyanide from board scrap .l put about 20 kgs of scrap board in water and add about one kg of Cyanide . After one day all gold in boards dissolve in solution, and the solution turn into brown colour, then l filter it ,then l add zinc Powder into the solution ,then I filter the precipitate Powder and add to it sulfuric acid. some of brown powder was remains , I think it gold , but when i refining it by aqua Regia the solution turn into green . and when i detect it by stannous chloride there no anything.
Please what's mistake
thanks
Sorry not sulfuric acid but nitric acid
I don’t know what you have. I’ve never worked with cyanide. No experience with it.
@@sreetips thank you very much
Nice nice work streetips
My smb is not dissolve in gold solution (aqua regia) it is bubbling but after the reaction get over all the smb powder gathered in the bottom, and it is white in colour not brown or dark, what is the problem sir
What was your material? Was there gold in solution? Did you test with stannous? How much gold expected? Did you inquart? Was there other metals in solution? Did you premix the AR? The list of questions goes on and on. There are too many variables. I couldn't begin to help because I don't know what you have there. My guess is that you tried low yielding plated scrap and you probably never had any gold in solution to begin with. A common beginner mistake. I know this because I made the same mistake the first time I tried to refine some metals. I think that my first post with pictures is still on the goldrefiningforum.com my user name there is kadriver - check it out!
@@sreetips yaah may be, I think so! anyway thank you so much.
I logged on to the forum and found my first post from ten years ago. Please read it and the answers that I got back from the people who helped me; goldrefiningforum.com/phpBB3/viewtopic.php?f=37&t=8208&p=76616#p76616
Is this the gold actually oxidizing?
No, the solutions are dirty because of all the base metals being dissolved with the gold. If the silver and base metals are removed first by inquarting with silver or copper, then parting with hot nitric, then the solution will be clear and orange with only the gold in solution.
What happened with the messed up solution?
I refined it and got the gold out
How do you dispose of your aqua rigia?
Once the gold is dropped I add it to my stock pot.
@@sreetips you must have a huge stock pot
Its a ten liter plastic bucket. It's full of copper. The waste is bubbled with air and any precious metals cement out on the copper. After a few days the solution, now devoid of precious metals, and full of copper, is transfered to my waste treatment bucket. It's full of angle iron. The copper cements out on the iron and the copper metal is thrown away. The resulting acidic iron solution is treated with sodium hydroxide. The metal hydroxides are filtered out and disposed of. The caustic solution is adjusted to pH7 and disposed of. Nothing toxic ever gets poured down the drain.
@@sreetips okay, ill probably just pour mine down the river.. just kidding.....
What was the grey gunk?
Who knows what metals lurk in the alloys of men.
@@sreetips lmao. Thanks for an answer anyways. I have a small pile of that grey powder from learning mistakes. Never wanted throw away.
Did you denox? I never saw you add any urea whatsoever
If you add the right amount of nitric, only enough to just dissolve the gold, then there won't be any nitric to denox. But if we accidentally over shoot and add too much nitric then we don't use urea to kill the excess nitric. We use sulfamic acid. That's what I was taught by professional refiners on the goldrefiningforum.com
Gold proceced from sand
After Will get pure gold
What do next step
Please details me
No experience with gold from sand. Sorry.
great video
I’ll try this tomorrow from my brown goo 😂. Hopefully it will work
Could inquarting technique be used on e-waste refining?
I typically melt it with a bunch of copper then electro plate the copper off then go to nitric then aqua regia
I've never tried it so I don't know. Usually the amount of gold from escrap is so small that inquarting would be overkill and difficult. If you had a nice button of gold from escrap recover built up over time and you wanted to purify it then inquarting should work.
@@sreetips yeah, it takes a lot of e-scrap to get much gold. But there are easy mechanical ways of separating out the gold bearing parts. Such as your video you made about the ram fingers. I think you said it took too much acid and created to much waste to get the foils separated from the fingers. You can separate the foils faster and easier with no waste mechanically with one of those wood burning art pens (like soldering iron). The foils are about 5% gold and probably could be refined easily from there. There are also mechanical ways of getting the gold out of ic chips.
@@xdebugxDotNet Have you been watching E.Waste Ben's Channel?? That's exactly what he does. He takes the ram and slot cards, heats up his modified soldering tool and he has the fingers off in 1 to 2 seconds!! He had his essayed and it only turned out to be 3%, but that's pretty good considering it's ewaste. That's 10 to 100 times better than what I've seen pins melted and essayed.
Have a GREAT Day!!
I love that beautiful orange liquid
Have you ever worked with raw ore or wish too?
No, only karat scrap that’s already above the ground.
@@sreetips would you like to try ores?
No, yields are measured in grams per ton.
Can you recover the silver to reuse?
Yes