This is an interesting case ... the last people you can sell crappy gold are the jewelers. The only cases when they buy it are when it is heavily underpriced with intention to refine it and earn 💰
Sreetips, I've always been curious about this step. period can you please film a video with a highly leaded chlorooric acid in which you visually crash out the lead via the sulfuric acid? I can't be the only person who wants to see this
Basically, it’s a redox where lead is reduced and H₂SO₄ is oxidized. It’s not a really interesting reaction, and it’s hard to distinguish the lead(II) sulfate from other white precipitates like silver(I) chloride. Considering that only an amount in milligrams is probably present, it’s not going to be easier visible unless the reaction is isolated.
Oh by the way add zinc to the molten metal not in by itself zinc poisoning is VERY VERY dangerous this also should be done in a fume hood. make a bead or prill by folding it tightly and dropping it into molten gold alloy. Please look it ip If you dont believe me.
Yes the zinc in particular should be melted into the already molten alloy but this is very difficult to achieve given the setup that sreetips uses. Ideally the metal would be alloyed in a crucible inside a furnace and the heat applied to the crucible not directly to the metal. While Sreetips does a good job at mitigating alot of his risks his low cost setup means that some risks are difficult to avoid.
This is super important, I hope he sees this. Using too hot of a flame or direct flame burns the zinc and produces zinc oxide fumes. Heat the metals with higher melting temps first, get them molten, then pull the flame away from the melt dish and you stir in your zinc strip.
Fantastic video. Was sad to see such a beautiful bar of pure gold being alloyed but it was interesting to see how it's done. I love your videos. So informative.
This is awesome stuff - I love the way that metabisulphite shows what a great reducing agent it is. We use it a great deal in flotation for the same reasons - fantastic to see it in action! This is easily the best gold and silver refining channel on youtube! Great work!
That's neat how you show that even a tiny amount of lead can affect the workability of the metal afterwards - so even if you're not going for three nines (or more), that sulfuric acid step (to make sure the lead drops out before filtration steps) is important to make sure your button/ingot will be usable for whatever you want to make it into. :D
One would think when making 14K Gold (or brass) that when adding the zinc, you would add it last to the melted metals because it has the lowest melting temperature of all the other metals. When you overheat zinc past the melting temperature, it vaporizes (creating yellow smoke) thus reducing the zinc content of your alloy. If you melt your Gold, Copper and Silver first, and when it's molten, then add the zinc to reduce the loss. The zinc will melt fast in the molten mixture.
BOILING point of zinc is 900C so should be added last in small amounts to the gold copper silver alloy when it is JUST at melting point. As you add the small zinc peices the melting point of the alloy lowers and boiling of the zinc stops being an issue.
I love your videos. I am in the process of obtaining all the things I need to start doing this stuff. Your videos are so relaxing andinformative . I got my dad and father in law hooked on watching them now. Thanks for making them
Nice vid sreetips. Thank you for being fearless when it comes to Gold and refining, it's something that turns a lot of people around and walks them in the other direction, I myself am quite the aficionado of gold and hope to brand myself as a Jewelry-designer. You know, if this comment reaches you I actually have a poignant question regarding Gold and it's relevant alloys. It's regarding a piece of palladium I recently purchased from a refiner in Texas who has an ebay store. Her refining process leaves her with pieces that she calls .99 just 2 nines not the 3 like in most gold bars. Upon closer inspection of the pieces I purchased I noticed a little bit of blue on one of them, it appears to be metal and there is a little bit of it. Knowing the PGMs a little myself I know that potentially this could be the metal Osmium as the PGMs are mined together and occur together. If this is an Osmium imperfection in my otherwise perfect Palladium nuggets do you know of any further refining processes? XD I'm probably straight hosed considering Osmium Tetra-oxide can kill. Would love to hear your particularly insightful knowledge in this regard. -Alex DuWaldt
It occurs to me that this possible imperfection can be removed with quite a simple but costly chemical formula C^4 Fe^3 XD In either case proper respiratory gear is a must, I assume due to Osmium powder's ability to become Osmium Tetra-oxide. XD A diamond file to Palladium, oh what fools the world makes of us. And yet, I have to ensure that there's no osmium in my alloy with gold at the end so I best take care of that compressed air or whatever.
Great video (as always)...but seeing the complete process all together was really cool. Is there ever a possibility of seeing platinum or palladium melts, or are the temps too high to be practical?
I do a lot of gold prospecting and followed your steps on refining. Well last year I got married Add I took the gold to a jeweller to have a Custom wedding band made And he would not let me alloy down to 14K Apparently you have to have a special licence to put the stamp on the ring. But anyways your videos are awesome I've learned a lot from from you. Before I took the gold to the jeweller I had an XRF reading done on the gold Not a trace of anything but Au thank you.
How to make 14k gold. You are doing so much good to your followers that all of us appreciated. Is it the same result if I instead of using nitric acid to refined 14k gold. Should I use sodium nitrate plus hydrochloric acid to obtain liquid 24k fine gold and then drop the gold with stump-out. The problem is that maybe all the other metals will drop along with the fine gold. I haven't do this and I appreciate your answer. Thank you.
Something I wanted to type a long time now... with getting Gold from ore or slag Lead is also used as a collector metal and with the method of cupelling the leadoxide is adsorbed into bone ash cupels out of the Gold/silver alloy. when this isn't done long enough or probably always, traces of lead will remain in the Gold gained from ore. That could well be the source of lead also in many Gold samples. Congratulatons with the new fume hood..I hoped you would even build it larger ...have fun!
Very interesting video. First one, AFAIK, that deals witch specific amount of metals from the beginning (gold "scrap") through purification, and back to "proper" 14k gold alloy. This enabled me to make some quick calculations regarding efficiency/ losses - and I did them, and... hmm. We started with a 52.3 g of 14k Au alloy, and that means we should (see note latter on) have something like 30.5 g of pure Au - as 14k = 58.(3)% Au content in the alloy. But after refining we got 29.3 g of Au, and that means a loss of 1.2 g of gold, or 3.9% loss (if my math is right). Not an insignificant amount, and I wonder where did that gold go? Into hot nitric acid? Tiny specks of gold powder blown away by torches? Both? (I assume only trace amount of gold was lost due to some gold not precipitating from Au solution or due to a tiny amount of Au solution left on walls of beakers and flasks, as Mr. Sreetips is very proficient in those laboratory techniques.) (EDIT: Seems like @ 7:35 some of the inquarted gold (a tiny speck) "splashes" outside of the jug the gold was poured into. But that would be just a part of that "missing gold", I reckon.) Then we proceeded with making new 14k alloy, and starting with 29.3 g of Au we should arrive at 50.2 g of 14k gold - but the end result was 49 g of 14k gold alloy, which means 1.2 g/ ≈ 2.4% loss. Now, the second case is easier to explain, I think - as zinc (Zn) is a rather volatile and reactive metal, thus easily evaporates and oxidizes (those white-bluish puffs seen @30:09 and latter are the results of Zn burning), and copper can oxidise quite easily too. Therefore, it seems, for the purpose of making gold alloys an electric furnace would be much better suited - and if combined with argon purging it would produce ideal results, IMO. It doesn't have to be a constant flow of argon - just a short "flushing out" the air from the crucible should do the trick, as Ar is slightly heavier than air and the crucible is covered during heating up. But that's just a technical side note, and the biggest question is what happened to the gold from original scrap piece(s)? Could it be, that that 14k scrap was actually slightly below 14k? And the whole "loss thing" makes me wonder 'cause I remember from quantitative analysis exercises I've done in lab during my school years, that the accuracy could be within milligrams (0.001g), or even a part of it. Case in point - prof. Polyakoff talking about recovery of 9.5 mg of Pu, from initial 10 mg, that got accidentally spilled on a chemistry lab table; ruclips.net/video/89UNPdNtOoE/видео.html Cheers, KB
Excellent video please let us know if jeweler had any problems rolling it I always thought they really only alloy junk metal with gold to stretch out the gold And I was searching for videos on gold recovery from DLP chips from the large projector TVs that used to be popular and can't find anything on them there is some stuff out there but nothing worth anything I have some and am nor really sure how to proceed Didn't you say a couple videos back you had some Pentium pros you where going to revisit in an upcoming video the DLP chip are similar ceramic but have a clear glass window you can clearly see the gold bonding wires in them
Hey sreetips,... I am still working on getting my gold to drop out of solution all-at-once like yours does,..into a sponge-like-blob in the bottom of the beaker. Mine (for some reason) always drops out very slowly (reluctantly) as very-fine -dust-specks ??? And the solution is very merky and muddy after I add the SMB, as if something is holding it back from dropping all at once. I have observed though, that if I let the solution sit over night, that the gold will finally drop to the bottom and the solution above it is clear as water. So, I poured off "just" the clear solution (filtered it) into a glass container figuring that all the gold that was going to drop had dropped,....but, when I left that clear solution over night again, there was more gold on the bottom of the beaker the next morning,....I did this 2-3 nights in a row, and each time there was gold in the bottom the next morning. It's like there is a "time-release" going on with my clear solution, and it especially happens when I add ice cubes to it, which (I believe) dilutes it, and reduces the solution's acidity . So, if anyone is just adding this clear solution to their stock pot , small amounts of gold is being added to the base metals in that pot. Any thoughts on this?? Gary
I have an idea of how much gold to expect before I even start the refining. SMB will precipitate all the gold in just minutes. I’ve never had gold continue to drop from a clear solution - baffling.
Very cool! I didn't know a small amount of lead could cause such problems. As for adding the metals...would adding the Zinc last be better? It can overheat and burn off...which may be why you lost some weight in the final melt.
Nice video sreetips. Just want to know where you get those constants when doing your inquartations. Are they textbook references or through some fancy calculation?
I used to do a long calculation. You can see it in some of my earlier karat scrap refining videos. Then one of my subscribers condensed it down to just one operation with one number, multiply grams by the constant and your done. Much simpler. I can’t remember the subscribers name though.
Saturday complete... You may also want to investigate the melting temp of the metals some metal vaporize at certain temperatures... I think zinc is the last to add when it's cooling so it doesn't vaporize??? I could be wrong great vid...
Thank you for sharing all the knowledge you have acquired over the years, sir. Seriously, I have gained so much valuable lessons from you that I can now take with me for life. You have no idea how much I appreciate it!
Question: at 7:38 you are dripping the melted gold/silver into the water to set it and then later you take a step to be sure rinse all the chlorine off the shot or it will cause problem later. Why not use distilled water to drip the metal into instead of tap water? That would avoid the chlorine all together would it not? You sir are the expert and I know nothing, but this just popped into my head while watching.
Your videos are really cool! I've learned a lot about metallurgy that I never though I would find interesting. You really should be a chemistry teacher!
Is it cost effective to pour off your nitric so soon? It appears to react with your neutralizing silver rather quickly, which would say to me that it could have sat on the gold alloy longer, and reduce overall nitric consumption. Or, does it not really matter in a time vs. nitric equation?
its all the same, he needs to dissolve the silver in nitric anyway + removing the nitric early saves time because by adding fresh nitric it digests the metals faster than waiting for the used nitric to do the job, the used nitric may only be 10% to 20% when he is dumping it into the beaker with the silver & that silver does not need to be rushed back to the customer. recovery and refining is much fun, just wish I still did it myself.
@@themyceliumnetwork I fully understand the why, I’m just interested in digging deeper. At about $100 a gallon for nitric, is the time saved by refreshing the concentration worth the price of the nitric. Or, more specifically, is the diluted nitric so slow that it’s worthwhile to replenish it so quickly? Given the no2 given off to sterling so quickly, it appears that it’s premature. I haven’t messed with the stuff in 20 years, so my question is of legitimate questing of knowledge, not second guessing.
In the case of Sreetips he makes this point in another video. Since he is not just refining gold but also silver, he ultimately intend to reduce that other set of sterling anyways. He's using the second set of Sterling not as a neutralizing step but rather a refining step. I hope that answers the question
Mr Tips....have you ever run into an issue with someone recognizing you and leading you to worry they'll figure out where you live or anything along those lines? Or has nothing like that ever happened?
Thank you for showing us a step by step process for removal of lead from gold. Speculation but could that lead be added to change the weight of the gold as in a filler attempt?
Also I do not wish to be rude in any manner respectfully asking, would you have earned 2nd Class Petty Officer or Chief, Senior Chief in rank during your 20+ years active service? Nothing quite like 2nd Class during Deployment ! As a Gunner's Mate it was intense, but epic!
The gold was a hard type alloy for casting, not soft for rolling. I would of liked to see you do the tests to see why. IT was not lead, maybe Zinc, Tin or Iron because to was too hard to roll . I would of returned to gold refined to the guy for him to add the correct alloy mix to it he wants for the work he is doing.
Can you chemicly separate the silver from the gold of a 14K bar into a bar of silver and a bar of gold? Or do you have to dissolve all the silver out to collect the gold?.
Yes, but in order to do so one must first add silver to the 14k gold to reduce it down to 6k gold (a 25% gold alloy). Then hot dilute nitric can penetrate and remove all of the existing silver in the alloy plus all the silver that was added. This process, called inquarting, is so effective that after the nitric boils, the resulting gold is very close to three nines without any further refining. If you try boiling 14k gold in hot nitric without adding the additional silver, nothing happens. The 14k gold just sits there unaffected. High karat gold protects the silver from the acids.
When selecting metals for the alloy I see you used copper wire as the copper source. I had it in the back of my mind that maybe electrical wire has some other trace metals to improve its mechanical characteristics, and wondered if the wire you are using is pure copper, and if so, where can someone get it? Or perhaps the level of alloy metals in electrical wire doesn't affect the finished product?
I get copper wire at local yard sales. People buy 25 feet of it for a home improvement project and only use 6 feet. It sits in their garage for a few years until they get tired of it laying around then sell it at their yard sales for two bucks. I’ve even gotten used wire for free. It’s all over the place and cheap
I commonly see people smelting or getting ready to cast zinc with a furnace and it tends to burn. Should you not add the zinc as the last step to the other alloys such that you don't begin to burn it off?
The brown gold powder is metallic gold. It can actually be cold pressed into an ingot although I’ve never tried it. It should be detectable but again I’ve never tried a metal detector on it. I have zero experience with ore. It’s usually measure in grams per ton. The metal I work with is already highly concentrated
Hi Kevin, maybe you could tell the jeweller to post a video of him rolling out the bar and working the gold or if he doesn’t have a channel he could possibly send you the footage, continued success Sincerely Fabrizio
sreetips alright, yeah I could understand, I wonder maybe you could roll out a bar in one of your videos, as long as you don’t lose any gold in the process or maybe a silver bar would be better as it seems you have a lot of it around, continued success Sincerely Fabrizio
I recently had a discussion about dissolving gold and silver with only Nitric acid. To clarify this for me, being slightly soluble (as you demonstrated) shows why you never throw anything away (referring to your stock pot) because as you've pointed out on several occasions you're bound to lose a little bit every time you process. But you would never attempt to dissolve a given quantity of gold with Nitric alone. Would you? Or silver?
Sreetips dissolves silver in nitric acid in practically every video. I do not see any point in trying to dissolve substantial amounts of gold in nitric acid on purpose. Nitric acid is sorta expensive compared to just about every other chemical sreetips uses. It would be counter-productive in most cases. .
@@isaacclark9825, he uses Nitric acid for both gold and silver. For silver it's a dilute solution with distilled water being the other part. For gold the other part of the solution is Hydrochloric acid. What I was wondering was if gold would dissolve beyond the "slight solubility" he demonstrated in Nitric acid alone.
Have you ever considered using some Seachem Safe (aquarium water conditioner) to neutralize any chlorine or chloramine from your tap water to save some time from having to do multiple rinses with distilled water?
Hi dear. I watch your videos with great interest. You work very technically and regularly. You're a professional at your job. Can you show me how to make stannous chloride? Do you know of a mixture that can substitute Aqua regia for separating gold? Because it is very difficult to neutralize nitric acid.Thank you very much for taking the trouble to make a video to give us true and understandable information for free.
Actually, I found a mixture that can replace Aqua regia, but I have my doubts about how real and correct it is. You can prove it zen at its best. Because I don't have that much experience. Please can you look at this youtube site ruclips.net/video/9ti9H2GN8uo/видео.html
@@sreetips Thank you for your prompt reply. Since we cannot find chlorine gas in domestic conditions and it is very dangerous, we cannot make it. I watched the video you solved with chlorine gas. The weblink I sent talks about a formula that anyone can easily do. I would be grateful to you if you examine it and analyze for us whether it is a real or fake video.
Sir what will happen when we put copper metal in gold bearing solution will gold will peripacate on copper like it happen in silver thanks for sharing your knowledge
Yes, copper, being more reactive than gold, will “cement” the gold out of solution as a fine black powder. The solution will turn green and finally blue when all the gold has cemented out. This would make an interesting video.
@@sreetips Thank you very much for answering my question! I love that you make these videos. This is one of my favorite channels and refining metals is awesome hobby to have if you're someone who loves chemistry. Because of you, I have learned a lot and even refined a little bit of gold myself. You should consider compiling all of your notes, knowledge, tips, tricks, etc., and make a how-to book! I would buy it in a heartbeat
I enjoy most of your vids, but I have a question for you. I currently have a lot of black sand from point disappointment. I am going to extract the gold from it, but I was told platinum resides in it more than gold. So my question is...how to extract the platinum from huge quantities of black sand.
If I had gold and platinum mixed with black sand I’d take 500g and boil in aqua regia for 6 hours, adding fresh acids as I went. Then I’d filter it and drop the gold with ferrous sulfate. Ferrous sulfate will drop the gold, all the gold and nothing but the gold. The platinum will stay in solution. I’d add that to my stock pot and cement it out on copper for later recovery and refining. If it were mine.
@@sreetips if I sen't you 500 g of my black sand, could you do a video of you recovering the gold and the platinum? I feel like I really need to see it to be able to do it myself.
I do not expect you to do this for free, I have been given to understand there is a way to send you funds on pay pal, so I fully expect to recompense you for your work, as well as allowing you to keep the spoils from your refining. I am new to using chemicals, so far all I have done is panning after classifying it to 120 minus and running it through a magnetic field to remove everything but the gold, with a minute amount invariably lost in any process.
Hypothetically speaking...Could you just melt it down in a scorification dish, then add lead, and use a cupel to pull all of the lead back off? I'm just novice, and thirsty for knowledge. I greatly appreciate your awesome presentations, and intel Sir. Many thanks!
Ok if I missed why I’m sorry, but why make it and alloy again? Why not do the same process without making it an alloy? My best inference was so you know when each process was complete.
frankly...i liked this video of making the 14k gold..maybe you can make an 18k or a white or rose gold for fun. I heard there is a green gold...wouldnt mind seeing that.
I don't know how senseless my thoughts are about using a shielding gas to extinguish the final flame and maybe a few seconds additional purge to protect the bar from oxidation. I like to buff and realize that the loss is insignificant if measurable. However, doesn't the atmosphere flow into our metal during the time between flame out and quench? Would a very cold quench improve maleability to any significant measure? If so, would a CO2 + Nitrogen gas shield and a drop door into liquid nitrogen give four nines gold a four nines plus plus grade? Man oh man this stuff is corrupting my head!
Pure gold sponge is caramel coloured. It's only the characteristic gold colour that we all have come to expect once melted it's got to do with the way the crystals form.
Good question. I don’t have a good answer. I only know that at some point the acids won’t penetrate until fresh acid is added, even though active nitric remains in the blue liquid that I pour off.
I'm missing something , if the nitric is done with the silver melt of inquarted gold , the how is it that is is fumeing on the coffee pot with silver in it ? Why not leave the nitric in the inquarted gold if it is still active ?
Excellent question. I don’t know why. All I know is that the nitric in the blue liquid quits working even though there’s active nitric left in it. The only way to continue is to add fresh nitric acid.
@@sreetips I have a guess , maybe the strength of the nitric falls below some point ? Or some type of polar balance , my term from no chemistry experience . That being a polar balance is neutral , only a polar imbalance is active , again just guessing ;)
Sreetips, what he witnessed with the cracks forming in the rolling process are textbook cold rolling edge fractures from overworking the material. In order to maintain strength and ductility, one way to roll out a material is to hot roll it at a high temperature. This spontaneously anneals the metal so that new crystal grains form in place of the stretched out brittle grains.
I’m sure he knows this. He’s been at it for years. But if you look at the video, the metal crumbled just from me bending it. It make have been from work hardening. But I’ve refined stuff for him before. He says after refining the metal “behaves nicely.”
i have copper and gold mixed together and i disolve both in Hcl and H2o2 , then i add SMB , But Nothing perciptate out , what is wrong in my solution ?
I remember when I first stated 10 years ago. I wanted to get the pure gold so badly that I couldn’t wait. I had to learn to let these reactions happen rather than trying to force them to happen. I still have a tendency to do it when I’m making my videos. It’s best to let them happen in their own time.
I enjoyed this video very much.. shoot us an update later on if everything went well with the jeweler.
This is an interesting case ... the last people you can sell crappy gold are the jewelers. The only cases when they buy it are when it is heavily underpriced with intention to refine it and earn 💰
Joe Rogan No. Everything did not go well at the jeweller’s, they got into fisticuffs. Lots of screaming. Nasty stuff.
/s
What do you mean?
Sreetips, I've always been curious about this step. period can you please film a video with a highly leaded chlorooric acid in which you visually crash out the lead via the sulfuric acid? I can't be the only person who wants to see this
Please....
Basically, it’s a redox where lead is reduced and H₂SO₄ is oxidized. It’s not a really interesting reaction, and it’s hard to distinguish the lead(II) sulfate from other white precipitates like silver(I) chloride. Considering that only an amount in milligrams is probably present, it’s not going to be easier visible unless the reaction is isolated.
,bell-mid&large
Oh by the way add zinc to the molten metal not in by itself zinc poisoning is VERY VERY dangerous this also should be done in a fume hood. make a bead or prill by folding it tightly and dropping it into molten gold alloy. Please look it ip
If you dont believe me.
Yes the zinc in particular should be melted into the already molten alloy but this is very difficult to achieve given the setup that sreetips uses. Ideally the metal would be alloyed in a crucible inside a furnace and the heat applied to the crucible not directly to the metal. While Sreetips does a good job at mitigating alot of his risks his low cost setup means that some risks are difficult to avoid.
This is super important, I hope he sees this. Using too hot of a flame or direct flame burns the zinc and produces zinc oxide fumes.
Heat the metals with higher melting temps first, get them molten, then pull the flame away from the melt dish and you stir in your zinc strip.
Fantastic video. Was sad to see such a beautiful bar of pure gold being alloyed but it was interesting to see how it's done. I love your videos. So informative.
Ah. Perfect timing as always. I nearly ran out of videos.
"Going to add about thirty drops... One, two, three, yum, yum, eleven, twelve... Okay, that's good enough."
Sounds like how I count.
It came out in a stream. You couldn’t see because of the bad camera angle on that shot.
This is awesome stuff - I love the way that metabisulphite shows what a great reducing agent it is. We use it a great deal in flotation for the same reasons - fantastic to see it in action! This is easily the best gold and silver refining channel on youtube! Great work!
Rotfl! My wife an hour before you released this video: "I want to rewatch some of those sreetips videos ... get a refresher ..." Lol!
Thank you!
That's neat how you show that even a tiny amount of lead can affect the workability of the metal afterwards - so even if you're not going for three nines (or more), that sulfuric acid step (to make sure the lead drops out before filtration steps) is important to make sure your button/ingot will be usable for whatever you want to make it into. :D
One would think when making 14K Gold (or brass) that when adding the zinc, you would add it last to the melted metals because it has the lowest melting temperature of all the other metals. When you overheat zinc past the melting temperature, it vaporizes (creating yellow smoke) thus reducing the zinc content of your alloy.
If you melt your Gold, Copper and Silver first, and when it's molten, then add the zinc to reduce the loss. The zinc will melt fast in the molten mixture.
Good advice, thank you
BOILING point of zinc is 900C so should be added last in small amounts to the gold copper silver alloy when it is JUST at melting point. As you add the small zinc peices the melting point of the alloy lowers and boiling of the zinc stops being an issue.
That’s good to know. Thank you
Felt like I was in class and actually listening. Amazing video on gold.
I love your videos. I am in the process of obtaining all the things I need to start doing this stuff. Your videos are so relaxing andinformative . I got my dad and father in law hooked on watching them now. Thanks for making them
Thank you!
Nice vid sreetips. Thank you for being fearless when it comes to Gold and refining, it's something that turns a lot of people around and walks them in the other direction, I myself am quite the aficionado of gold and hope to brand myself as a Jewelry-designer.
You know, if this comment reaches you I actually have a poignant question regarding Gold and it's relevant alloys. It's regarding a piece of palladium I recently purchased from a refiner in Texas who has an ebay store. Her refining process leaves her with pieces that she calls .99 just 2 nines not the 3 like in most gold bars. Upon closer inspection of the pieces I purchased I noticed a little bit of blue on one of them, it appears to be metal and there is a little bit of it. Knowing the PGMs a little myself I know that potentially this could be the metal Osmium as the PGMs are mined together and occur together. If this is an Osmium imperfection in my otherwise perfect Palladium nuggets do you know of any further refining processes? XD I'm probably straight hosed considering Osmium Tetra-oxide can kill. Would love to hear your particularly insightful knowledge in this regard.
-Alex DuWaldt
It occurs to me that this possible imperfection can be removed with quite a simple but costly chemical formula C^4 Fe^3 XD
In either case proper respiratory gear is a must, I assume due to Osmium powder's ability to become Osmium Tetra-oxide. XD A diamond file to Palladium, oh what fools the world makes of us. And yet, I have to ensure that there's no osmium in my alloy with gold at the end so I best take care of that compressed air or whatever.
Great recipe. I always wonderd. Like you, I've always tried to remove unwanted metals. Thanks.
Great video (as always)...but seeing the complete process all together was really cool. Is there ever a possibility of seeing platinum or palladium melts, or are the temps too high to be practical?
I’ve used oxy/acetylene to melt platinum and palladium into buttons. Pouring a bar is another story.
I do a lot of gold prospecting and followed your steps on refining. Well last year I got married Add I took the gold to a jeweller to have a Custom wedding band made And he would not let me alloy down to 14K Apparently you have to have a special licence to put the stamp on the ring. But anyways your videos are awesome I've learned a lot from from you. Before I took the gold to the jeweller I had an XRF reading done on the gold Not a trace of anything but Au thank you.
Excellent
Greetings to Islam, peace, mercy and blessings of God be upon you. You are a very respectable man, and your channel is the best ever.
Thank you
That was different and Great!!
I expect that this video in time will be a 10 million plus view video!!
Have a Great Day My Friend!!!
How to make 14k gold.
You are doing so much good to your followers that all of us appreciated.
Is it the same result if I instead of using nitric acid to refined 14k gold. Should I use sodium nitrate
plus hydrochloric acid to obtain liquid 24k fine gold and then drop the gold with stump-out. The problem is that maybe all the other metals will drop along with the fine gold. I haven't do this and I appreciate your answer. Thank you.
I’ve never tried what your talking about here. I don’t know if that will work or not.
great method wonderful upload 👍💐🤝🙏🌹
Something I wanted to type a long time now... with getting Gold from ore or slag Lead is also used as a collector metal and with the method of cupelling the leadoxide is adsorbed into bone ash cupels out of the Gold/silver alloy. when this isn't done long enough or probably always, traces of lead will remain in the Gold gained from ore. That could well be the source of lead also in many Gold samples. Congratulatons with the new fume hood..I hoped you would even build it larger ...have fun!
What a cool video I don't believe you have ever shared a video like this before thanks for sharing.
Very interesting video. First one, AFAIK, that deals witch specific amount of metals from the beginning (gold "scrap") through purification, and back to "proper" 14k gold alloy.
This enabled me to make some quick calculations regarding efficiency/ losses - and I did them, and... hmm.
We started with a 52.3 g of 14k Au alloy, and that means we should (see note latter on) have something like 30.5 g of pure Au - as 14k = 58.(3)% Au content in the alloy.
But after refining we got 29.3 g of Au, and that means a loss of 1.2 g of gold, or 3.9% loss (if my math is right).
Not an insignificant amount, and I wonder where did that gold go? Into hot nitric acid? Tiny specks of gold powder blown away by torches? Both? (I assume only trace amount of gold was lost due to some gold not precipitating from Au solution or due to a tiny amount of Au solution left on walls of beakers and flasks, as Mr. Sreetips is very proficient in those laboratory techniques.)
(EDIT: Seems like @ 7:35 some of the inquarted gold (a tiny speck) "splashes" outside of the jug the gold was poured into. But that would be just a part of that "missing gold", I reckon.)
Then we proceeded with making new 14k alloy, and starting with 29.3 g of Au we should arrive at 50.2 g of 14k gold - but the end result was 49 g of 14k gold alloy, which means 1.2 g/ ≈ 2.4% loss.
Now, the second case is easier to explain, I think - as zinc (Zn) is a rather volatile and reactive metal, thus easily evaporates and oxidizes (those white-bluish puffs seen @30:09 and latter are the results of Zn burning), and copper can oxidise quite easily too. Therefore, it seems, for the purpose of making gold alloys an electric furnace would be much better suited - and if combined with argon purging it would produce ideal results, IMO.
It doesn't have to be a constant flow of argon - just a short "flushing out" the air from the crucible should do the trick, as Ar is slightly heavier than air and the crucible is covered during heating up.
But that's just a technical side note, and the biggest question is what happened to the gold from original scrap piece(s)? Could it be, that that 14k scrap was actually slightly below 14k?
And the whole "loss thing" makes me wonder 'cause I remember from quantitative analysis exercises I've done in lab during my school years, that the accuracy could be within milligrams (0.001g), or even a part of it. Case in point - prof. Polyakoff talking about recovery of 9.5 mg of Pu, from initial 10 mg, that got accidentally spilled on a chemistry lab table; ruclips.net/video/89UNPdNtOoE/видео.html
Cheers, KB
Nice into. I'm hooked. Nobody else is doing this.
Excellent video please let us know if jeweler had any problems rolling it
I always thought they really only alloy junk metal with gold to stretch out the gold
And I was searching for videos on gold recovery from DLP chips from the large projector TVs that used to be popular and can't find anything on them there is some stuff out there but nothing worth anything I have some and am nor really sure how to proceed
Didn't you say a couple videos back you had some Pentium pros you where going to revisit in an upcoming video the DLP chip are similar ceramic but have a clear glass window you can clearly see the gold bonding wires in them
Hey sreetips,... I am still working on getting my gold to drop out of solution all-at-once like yours does,..into a sponge-like-blob in the bottom of the beaker. Mine (for some reason) always drops out very slowly (reluctantly) as very-fine -dust-specks ??? And the solution is very merky and muddy after I add the SMB, as if something is holding it back from dropping all at once.
I have observed though, that if I let the solution sit over night, that the gold will finally drop to the bottom and the solution above it is clear as water. So, I poured off "just" the clear solution (filtered it) into a glass container figuring that all the gold that was going to drop had dropped,....but, when I left that clear solution over night again, there was more gold on the bottom of the beaker the next morning,....I did this 2-3 nights in a row, and each time there was gold in the bottom the next morning. It's like there is a "time-release" going on with my clear solution, and it especially happens when I add ice cubes to it, which (I believe) dilutes it, and reduces the solution's acidity . So, if anyone is just adding this clear solution to their stock pot , small amounts of gold is being added to the base metals in that pot. Any thoughts on this?? Gary
I have an idea of how much gold to expect before I even start the refining. SMB will precipitate all the gold in just minutes. I’ve never had gold continue to drop from a clear solution - baffling.
Very cool! I didn't know a small amount of lead could cause such problems.
As for adding the metals...would adding the Zinc last be better? It can overheat and burn off...which may be why you lost some weight in the final melt.
Nice video sreetips. Just want to know where you get those constants when doing your inquartations. Are they textbook references or through some fancy calculation?
I used to do a long calculation. You can see it in some of my earlier karat scrap refining videos. Then one of my subscribers condensed it down to just one operation with one number, multiply grams by the constant and your done. Much simpler. I can’t remember the subscribers name though.
@@sreetips Thanks for that. Always nice to hear from you.
Saturday complete... You may also want to investigate the melting temp of the metals some metal vaporize at certain temperatures... I think zinc is the last to add when it's cooling so it doesn't vaporize??? I could be wrong great vid...
Thank you for sharing all the knowledge you have acquired over the years, sir. Seriously, I have gained so much valuable lessons from you that I can now take with me for life. You have no idea how much I appreciate it!
Excellent, thank you!
After all the huge processes you have done recently, it must have been nice to work with smaller quantities :)
Like a breath of fresh air
Question: at 7:38 you are dripping the melted gold/silver into the water to set it and then later you take a step to be sure rinse all the chlorine off the shot or it will cause problem later. Why not use distilled water to drip the metal into instead of tap water? That would avoid the chlorine all together would it not? You sir are the expert and I know nothing, but this just popped into my head while watching.
It’s been asked before. Distilled water is ten times more expensive than tap water. And I hate carrying gallons of it in from my car!
When it comes to PM purity issues you are most definitely the go to my friend !
Nice videos can you make a video on 10 k gold 👍
Excellent job
Your videos are really cool! I've learned a lot about metallurgy that I never though I would find interesting. You really should be a chemistry teacher!
I took one chemistry class back in 1973 in high school and I got a “D”
Nice video about 14 k
Another awesome video. I really enjoy watching them.
Is it cost effective to pour off your nitric so soon? It appears to react with your neutralizing silver rather quickly, which would say to me that it could have sat on the gold alloy longer, and reduce overall nitric consumption. Or, does it not really matter in a time vs. nitric equation?
its all the same, he needs to dissolve the silver in nitric anyway + removing the nitric early saves time because by adding fresh nitric it digests the metals faster than waiting for the used nitric to do the job, the used nitric may only be 10% to 20% when he is dumping it into the beaker with the silver & that silver does not need to be rushed back to the customer.
recovery and refining is much fun, just wish I still did it myself.
@@themyceliumnetwork I fully understand the why, I’m just interested in digging deeper. At about $100 a gallon for nitric, is the time saved by refreshing the concentration worth the price of the nitric. Or, more specifically, is the diluted nitric so slow that it’s worthwhile to replenish it so quickly? Given the no2 given off to sterling so quickly, it appears that it’s premature. I haven’t messed with the stuff in 20 years, so my question is of legitimate questing of knowledge, not second guessing.
In the case of Sreetips he makes this point in another video. Since he is not just refining gold but also silver, he ultimately intend to reduce that other set of sterling anyways. He's using the second set of Sterling not as a neutralizing step but rather a refining step. I hope that answers the question
Mr Tips....have you ever run into an issue with someone recognizing you and leading you to worry they'll figure out where you live or anything along those lines? Or has nothing like that ever happened?
I’m still waiting for the day to hear someone say, “oh my gosh, you’re sreetips!” But it hasn’t happened yet. Thankfully.
Awesome video man !
Is there a way to test for lead in the filter paper?
I don’t know. Good question
Thank you for showing us a step by step process for removal of lead from gold.
Speculation but could that lead be added to change the weight of the gold as in a filler attempt?
Also I do not wish to be rude in any manner respectfully asking, would you have earned 2nd Class Petty Officer or Chief, Senior Chief in rank during your 20+ years active service?
Nothing quite like 2nd Class during Deployment ! As a Gunner's Mate it was intense, but epic!
Fantastic! Can the handheld Xray gun detect minute amounts of Pd contaminants?
I’ve never used one. I don’t know
The gold was a hard type alloy for casting, not soft for rolling. I would of liked to see you do the tests to see why. IT was not lead, maybe Zinc, Tin or Iron because to was too hard to roll . I would of returned to gold refined to the guy for him to add the correct alloy mix to it he wants for the work he is doing.
Can you chemicly separate the silver from the gold of a 14K bar into a bar of silver and a bar of gold? Or do you have to dissolve all the silver out to collect the gold?.
Yes, but in order to do so one must first add silver to the 14k gold to reduce it down to 6k gold (a 25% gold alloy). Then hot dilute nitric can penetrate and remove all of the existing silver in the alloy plus all the silver that was added. This process, called inquarting, is so effective that after the nitric boils, the resulting gold is very close to three nines without any further refining. If you try boiling 14k gold in hot nitric without adding the additional silver, nothing happens. The 14k gold just sits there unaffected. High karat gold protects the silver from the acids.
When selecting metals for the alloy I see you used copper wire as the copper source. I had it in the back of my mind that maybe electrical wire has some other trace metals to improve its mechanical characteristics, and wondered if the wire you are using is pure copper, and if so, where can someone get it? Or perhaps the level of alloy metals in electrical wire doesn't affect the finished product?
Copper used for wire must be very pure or else it can’t be drawn into a wire. Same with copper tubing. Both are high purity copper.
I get copper wire at local yard sales. People buy 25 feet of it for a home improvement project and only use 6 feet. It sits in their garage for a few years until they get tired of it laying around then sell it at their yard sales for two bucks. I’ve even gotten used wire for free. It’s all over the place and cheap
GOOD tanku
Awesome knowledge thank you
I commonly see people smelting or getting ready to cast zinc with a furnace and it tends to burn. Should you not add the zinc as the last step to the other alloys such that you don't begin to burn it off?
Does the lead not redissolve back into the AR? or did you filter the lead out before adding more nitric?
The lead reacts with sulfuric to form lead sulfate - not soluble in AR
still loving your videos. My son still loves them too
Bravo!
I want to know if the gold is detectable by metal detector in the brown powder state, and can this process be used on gold and silver bearing ore?
The brown gold powder is metallic gold. It can actually be cold pressed into an ingot although I’ve never tried it. It should be detectable but again I’ve never tried a metal detector on it. I have zero experience with ore. It’s usually measure in grams per ton. The metal I work with is already highly concentrated
Just wondering if you could use a reverse osmosis system for your water instead of buying loads of distilled. Just wondering if it is worth it?
Cool video sreetips. I’d love to see more variety like this
You may have evaporated some of the zinc
No maybe about it. He did evaporate some of the zinc!
@@hot_wheelz of course I'm being polite .
That was super interestingly entertaining! : )
Hi Kevin, maybe you could tell the jeweller to post a video of him rolling out the bar and working the gold or if he doesn’t have a channel he could possibly send you the footage, continued success
Sincerely
Fabrizio
He is very secretive about his processes. I asked to video some clips of his work and he wasn’t too thrilled with the idea.
sreetips alright, yeah I could understand, I wonder maybe you could roll out a bar in one of your videos, as long as you don’t lose any gold in the process or maybe a silver bar would be better as it seems you have a lot of it around, continued success
Sincerely
Fabrizio
I hope Sreetips does a fallow up video with this gold. I want to see what the original guy was going to make with this gold.
I may get her to show the finished piece.
I recently had a discussion about dissolving gold and silver with only Nitric acid. To clarify this for me, being slightly soluble (as you demonstrated) shows why you never throw anything away (referring to your stock pot) because as you've pointed out on several occasions you're bound to lose a little bit every time you process. But you would never attempt to dissolve a given quantity of gold with Nitric alone. Would you? Or silver?
Sreetips dissolves silver in nitric acid in practically every video.
I do not see any point in trying to dissolve substantial amounts of gold in nitric acid on purpose. Nitric acid is sorta expensive compared to just about every other chemical sreetips uses. It would be counter-productive in most cases. .
@@isaacclark9825, he uses Nitric acid for both gold and silver. For silver it's a dilute solution with distilled water being the other part. For gold the other part of the solution is Hydrochloric acid. What I was wondering was if gold would dissolve beyond the "slight solubility" he demonstrated in Nitric acid alone.
Awesome video!
Could we see a demonstration of Acetic Acid and Hydrogen Peroxide (Peracetic Acid) dissolving silver and gold?
Streetips your awesome and then some....
Thanks David
Have you ever considered using some Seachem Safe (aquarium water conditioner) to neutralize any chlorine or chloramine from your tap water to save some time from having to do multiple rinses with distilled water?
Hi dear. I watch your videos with great interest. You work very technically and regularly. You're a professional at your job. Can you show me how to make stannous chloride? Do you know of a mixture that can substitute Aqua regia for separating gold? Because it is very difficult to neutralize nitric acid.Thank you very much for taking the trouble to make a video to give us true and understandable information for free.
The stannous recipe is 1g put tin shot. 1g stannous chloride crystals, 25ml distilled water, 30 drop hydrochloric acid. Mix, ready for immediate use.
I can dissolve gold with chlorine gas and with hydrogen peroxide and HCl.
Actually, I found a mixture that can replace Aqua regia, but I have my doubts about how real and correct it is. You can prove it zen at its best. Because I don't have that much experience. Please can you look at this youtube site ruclips.net/video/9ti9H2GN8uo/видео.html
@@sreetips Thank you for your prompt reply. Since we cannot find chlorine gas in domestic conditions and it is very dangerous, we cannot make it. I watched the video you solved with chlorine gas. The weblink I sent talks about a formula that anyone can easily do. I would be grateful to you if you examine it and analyze for us whether it is a real or fake video.
Now that was interesting we see u refine pure gold all the time but not make 14k gold for jewelry very cool bro
Very interesting! Thank you!
You are just too cool! Nice work!!
Sir what will happen when we put copper metal in gold bearing solution will gold will peripacate on copper like it happen in silver thanks for sharing your knowledge
Yes, copper, being more reactive than gold, will “cement” the gold out of solution as a fine black powder. The solution will turn green and finally blue when all the gold has cemented out. This would make an interesting video.
@@sreetips thanks for answering sir I love you may Allah bless you long and healthy life ameen
Could the copper @30:26 theoretically have impurities such as lead? If so, how would you deal with that?
The copper is high purity. It has to be in order for it to be drawn into wire. If there were impurities, especially lead, then the copper would break.
@@sreetips Thank you very much for answering my question! I love that you make these videos. This is one of my favorite channels and refining metals is awesome hobby to have if you're someone who loves chemistry. Because of you, I have learned a lot and even refined a little bit of gold myself. You should consider compiling all of your notes, knowledge, tips, tricks, etc., and make a how-to book! I would buy it in a heartbeat
I enjoy most of your vids, but I have a question for you.
I currently have a lot of black sand from point disappointment. I am going to extract the gold from it, but I was told platinum resides in it more than gold. So my question is...how to extract the platinum from huge quantities of black sand.
If I had gold and platinum mixed with black sand I’d take 500g and boil in aqua regia for 6 hours, adding fresh acids as I went. Then I’d filter it and drop the gold with ferrous sulfate. Ferrous sulfate will drop the gold, all the gold and nothing but the gold. The platinum will stay in solution. I’d add that to my stock pot and cement it out on copper for later recovery and refining. If it were mine.
@@sreetips thanks! Can you show me a video with you cementing the platinum? I don't think I've seen that one before.
Check out my stock pot. It full of copper to cement traces of PGMs
@@sreetips if I sen't you 500 g of my black sand, could you do a video of you recovering the gold and the platinum? I feel like I really need to see it to be able to do it myself.
I do not expect you to do this for free, I have been given to understand there is a way to send you funds on pay pal, so I fully expect to recompense you for your work, as well as allowing you to keep the spoils from your refining. I am new to using chemicals, so far all I have done is panning after classifying it to 120 minus and running it through a magnetic field to remove everything but the gold, with a minute amount invariably lost in any process.
So do you keep that filter? Or do you throw it away?
Hypothetically speaking...Could you just melt it down in a scorification dish, then add lead, and use a cupel to pull all of the lead back off? I'm just novice, and thirsty for knowledge. I greatly appreciate your awesome presentations, and intel Sir. Many thanks!
None of the refiners that I learned from used cupel.
@@sreetips Copy that intel, Sir. Thank you for the extremely prompt response.
Did you ever hear about the gold and did it roll out as you predicted like butter?
I have a question sir which one of your videos kinda show refining 10k to 24k and the easiest way for a beginner
See refining karat gold
Ok if I missed why I’m sorry, but why make it and alloy again? Why not do the same process without making it an alloy? My best inference was so you know when each process was complete.
I made an alloy for my friend so that he can complete the project and present his customer with a nice 14k gold cuff bracelet.
why use sterling silver over pure silver??? is there any reason not to use pure silver?
Yes, it’s already been through the silver cell. Using pure silver would be like taking a step in the wrong direction.
frankly...i liked this video of making the 14k gold..maybe you can make an 18k or a white or rose gold for fun. I heard there is a green gold...wouldnt mind seeing that.
I don't know how senseless my thoughts are about using a shielding gas to extinguish the final flame and maybe a few seconds additional purge to protect the bar from oxidation. I like to buff and realize that the loss is insignificant if measurable. However, doesn't the atmosphere flow into our metal during the time between flame out and quench? Would a very cold quench improve maleability to any significant measure? If so, would a CO2 + Nitrogen gas shield and a drop door into liquid nitrogen give four nines gold a four nines plus plus grade? Man oh man this stuff is corrupting my head!
Would a plasma torch with shielding gas be viable?
I use a torch flame pointed at the mold cavity as I pour in the molten metal.
@@sreetips You might enjoy itchy boots ride today....amazing silver area ruclips.net/video/I38dAGv8Uck/видео.html
So could one drop the melted gold into distilled water already or always use tap first???
I use tap water because distilled water costs ten times more, and it’s a pain bringing it in out of the car.
Okay thank you for the reply
I would like to know what that filter weighed after the very first filtration you know, before and after
why is the "pure gold " caramel color and not gold" Will it turn to gold if color if hammered?
Pure gold sponge is caramel coloured. It's only the characteristic gold colour that we all have come to expect once melted it's got to do with the way the crystals form.
Could it be that the contaminant catylized the solution of gold in the nitric acid?
Not sure
Why are the dilute nitric acid boils 'done' if there's still unused nitric acid when you pour it into the silver jar?
Good question. I don’t have a good answer. I only know that at some point the acids won’t penetrate until fresh acid is added, even though active nitric remains in the blue liquid that I pour off.
33:45 - Now that is a pat of butter that I would like to see on my toast!
I'm missing something , if the nitric is done with the silver melt of inquarted gold , the how is it that is is fumeing on the coffee pot with silver in it ?
Why not leave the nitric in the inquarted gold if it is still active ?
Excellent question. I don’t know why. All I know is that the nitric in the blue liquid quits working even though there’s active nitric left in it. The only way to continue is to add fresh nitric acid.
@@sreetips I have a guess , maybe the strength of the nitric falls below some point ?
Or some type of polar balance , my term from no chemistry experience .
That being a polar balance is neutral , only a polar imbalance is active , again just guessing ;)
Sreetips is it possible to make 14k gold with just gold and copper?
Yes, but the gold will be red in color. Rose gold
The gold melt time lapse was cool.
Beautiful. I want one LoL
Me and you both mate lol
just started collecting gold this was awesome!
Sreetips, what he witnessed with the cracks forming in the rolling process are textbook cold rolling edge fractures from overworking the material. In order to maintain strength and ductility, one way to roll out a material is to hot roll it at a high temperature. This spontaneously anneals the metal so that new crystal grains form in place of the stretched out brittle grains.
I’m sure he knows this. He’s been at it for years. But if you look at the video, the metal crumbled just from me bending it. It make have been from work hardening. But I’ve refined stuff for him before. He says after refining the metal “behaves nicely.”
Hi I would love to see a video of gold filled wire
Sorry, I don’t have any gold filled wire
Does the jeweler have a youtube where he does the rolling and such?
Why wouldn't the zinc or Tin make it brittle too ?
i have copper and gold mixed together and i disolve both in Hcl and H2o2 , then i add SMB , But Nothing perciptate out , what is wrong in my solution ?
Sorry, I have zero experience with these reagents. I don’t know
@@sreetips sorry , the GOLD Perciptate out BUT 2 HOURS LATER , :D , i had RUSH On this
I remember when I first stated 10 years ago. I wanted to get the pure gold so badly that I couldn’t wait. I had to learn to let these reactions happen rather than trying to force them to happen. I still have a tendency to do it when I’m making my videos. It’s best to let them happen in their own time.
Awesome video, I'm surprised you didn't acid test it to confirm that it is 14k
Am I right in saying that the ice you put in was made with distilled water
Tap water. Contaminants measure in parts per million. Not enough to report in a precious metals assay
Our Hero!
Make a follow up video with the jewelers results?