I think it might be the beauty and incredible impact of the Gold on our culture... It bonds people and awakes very deep memories of gifts we gave or have been given... But its also the fact that gold is created in last milisecondes of a dying giant star at Supernova... I love all precious metals but Rhodium is orders of magnitude more precious and its properties (Extremely hard, Incredibly Difficult to Separate from PGM) and the very distinctive colour
Your channel is very therapeutic, amazing and rather inspiring. I melt metals all kinds I like the satisfaction from it. I have a couple of LG’s of old silver I’m going to refine with the copper bar fascinating. You have started something within me. Thankyou for sharing your wisdom with us all.
I don't think the frosting effect isn't contamination, but it's because of the temperature of the gold when you pour it. The faster it cools the shinier the bar. If the gold cools slowly, it allows crystals to form on the gold creating a frosted appearance. (examine the frost under high magnification) the faster it cools the glossier it will look. Try hitting the top of the frosted bar with your torch until the surface starts to melt. When you see the metal start to melt, pull away the torch and it will re-solidify quickly, leaving a glossy finish) This is known in the industry as flame polishing.
If you are looking for a more rounded shot try dropping the melted gold higher up from the water.I used to make my own lead shot and it took a lot of practice to get it right.
The gold cornflakes looked spectacular! I am confused by: When you added sulfuric acid to your original aqua regia in order to ppt out any lead---and you didn't get enough to cause any visual amount of lead, but if it's there, it's there. But then you added that whole solution into your buckner funnel, so aren't you adding any lead right back into your soup?
If you're looking to make shot instead of flakes you should pour it through a mesh like screen door material. The size of the holes in the mesh will dictate the size of the shot you will get as an end result. If you're looking for perfectly round shot you'll need to pour it from height. The higher up the more time surface tension has to do its thing and make it more perfectly round.
Hi I have a question about silver nitrate. If I dissolve my silver and platinum group metals in HNO3 and after the filtration I would make silver chloride, which will then be reduced with sodium hydroxide + sugar, will I recover platinum group metals? I know you use copper, which pushes out silver and platinum metals, but if I wanted to skip the copper method and instead of that use the chloride method, will it work? Thanks for your answer.
Great video - Keep up the excellent job! You added sulfuric acid to get the lead out. You didn't filter out the solution before using smb? Except at the end - at this point you have gold crystals with possibly lead in it. or am I wrong?
*What happens if you boil the chloro auric acic to dryness? Does it for crystals or a syrup? What shape would the crystals be could you try that as an experiment? From my Limited college level chemistry it isn't a volatile liquid so you shouldn't have to worry about it sublimating away*
I’ve heard that how they used to purify things back in the day, was by super saturating a solution and crashing out the crystals by cooling the solution down. So, Shouldn’t The gold crystals that crashed out be extremely high purity? I’m just wondering what the purity of those pieces of gold would be that crashed out of your solution.
I watched those little shiny floaters for several minutes before suddenly realising how dense that liquid must be to have gold floating on it.
3 года назад
I get anxious whenever I see you transferring those particles of solid gold with your hands. Put a plate or dish under your hand or use a spoon to scoop out the gold. Great video!
Was the water in the initial container with the gold filled with distilled water or tap water? I didn't know if it was tap water if the very small amounts of chlorine would affect the reaction in any way since it wasn't washed off when added. If in case it was tap water. Sorry if this is a dumb comment
In the good ol days they took the molten metal up into a tall tower and pour the hot metal to form the metal shot. The heighth determined the size of the shot..
This is so fascinating! As it cooled gold formed from the concentration levels? I still wonder if the gold in the brown powder state is detectable as gold or not. As in metal detector.
Sreetips, this is a superb video and exactly matches my anticipated refining requirements on a weekly basis. I have a gold dredging operation in Nome, AK. Hope to be producing on the order of 5-20 ozT weekly. Refining batches of 5 ozT seems to be a healthy medium. I like your use of the classic denoXX rxn. I can suggest immerse the beaker in a cold ice/ NaCl bath. It will further reduce the temp. Question sir: considering the size of your business, do you think it would be a good idea to invest in an XRF? You could include XRF readings in your video productions and also use XRF as backup data for sales. Semper fi.
This is my hobby. I did check into it once. To own it was close to $20k. But I could rent it for $4500 per month or $1500 per week. Too rich for my small hobby operation.
I like the water-cooled board. Using a spray bar that increases the flow speed might help even more. Is there any reason not to use a ceramic plate, or just hard to find something suitable?
@ToyFreaks, Ditto on him generating a treatise on this process ! I think that he has enough practical experience on this subject, to produce a small handbook !! With photos of course, showing all the do's, don'ts and why !! As to the frosted look ...... Anyone that has done some soldering, cast silver or lead would tell you..... The metal cooled to rapidly or the mold (mould) was not pre-heated enough !! GREAT Job Sreetips !!!!
You need more flowing water for that shot setup. The gold is really hot and the water will expand violently as steam. You’re not cooling it down quick enough while it’s flowing and getting churned up. Also change the size of the area the gold comes out of. Make it a smaller slit. Or pour much slower
I think the shot is made by pouring the metal through a special crucible that has little holes like mesh that pours little streams causing droplets. At least I remember seeing it like that in how it's made. Just a thought 🤷 still cool the way it turned out.
One part of your process I've never fully understood is why do you use an oxygen enriched flame on your oxy-acetylene torch when doing the final melt into a bar? I realize gold doesn't oxidize per-se, but wouldn't you still want a reducing flame to reduce the chance of bubbles when doing the final pour?
@@sreetips I looked for academic papers on chloroauric solution saturation and found nothing! Maybe you should do a few more of these and publish your findings? I'd love to see future refiners and chemists use a Sreetips citation!
just venturing guess, but if you were to keep adding more solutions of refined gold and allowing them to boil off to the super saturated state, then much like making rock candy from saturated sugar water you could probably introduce a bit of shot to it and when it cools it would really form a lot of crystals
Yes, I’ll burn the filters. The precious metals recovered from the filters will contain lead. I’ll add sulfuric to the gold when it gets refined, to remove the lead, again,
lol if you could refine your gold crystalisation technique you could open a new line in gold and silver crystal on your ebay store. Great video as ever
Master after so many times me trying different methods I like the way you did it but if by any chance you have a lil silver/copper/gold and perhaps try 5 big 🧊 cubes like the ones you had and if you can chill the water before putting the ice in pot then when the melted metal is ready for pour start dropping it just hitting the ice cubes only and it will bounce and produce shot please give it a try if you can
I have poured shot by bouncing the molten stream of metal off a block of ice. It worked well. But in this video, I’m quite certain that I had not waited long enough, and that the molten metal was not hot enough. I rushed it and got a bad result. Typical rookie mistake. You can actually see some solid pieces of gold coming out of the crucible. If I had waited for the charge to heat to the correct temperature then the metal would have behaved much differently as it was being poured on to that piece of wood.
I thank that if you cut small groves, maybe 1/8 wide. That should help the gold to run off the end of the board in small streams, instead of coming off in sheets. I believe that will help you get better shot. Have you ever thought about putting the board in the freezer?
Barry, the molten gold wasn’t hot enough. I poured too soon. If I had waited then the gold would have spattered into small pieces instead of the large chunks you see in the vudeo
It would be cool if you do this again in the future if you could weigh the beaker to find the tare weight, then once you have the concentrated solution weigh it again so we can know the density of that liquid! It has to be 4 to 5 grams per centimeter cubed. Could be even more
Hey, love your videos, for years I e been melt aluminium and copper etc, do do ha e silver and gold but as investments from Australia mint, and I love how all metal works, but I feel this is above my IQ, do you have any advice for a newbie that just melts cans and wire? I dont want to blow up lol
Question. When the gold is dissolved in solution I'm guessing the solution weighs more? Is there at any point a change in weight from adding chemicals to participate the gold? It always amazes me to see a solid turn to liquid and then a solid again
I wonder if it would be a safe addition in your fumehood to add some kind of caustic sponge, essentially an alkali gas trap or at least padding where a leak COULD be. I have to tell you I never imagined that component of your experiments, that you have acidic fumes pumping out of your station more often than I have ever seen. Good luck, will pray for you guys 🙏
@@sreetips lol mine probably does too. I was merely thinking of structural stuff, not so much worrying what I breathe. I'm sure you know what you are doing, given you demonstrate that everyday. I merely worry. But yeah, I definitely prayed for you and yours.
Is it counterproductive to rinse the beaker each transfer, when you are just going to add more gold, and when you ultimately want to concentrate the stuff you are pouring off? Why not just pour as best you can and then rise when the last gold is dissolved?
I think the reason for gold jumping out of solution like that is the level of concentration... It was maxed out, is my guess, and could no longer hold that in the solution (as there was significantly less liquid at the end).
How do you deal with your gold filled stainless scrap? Or do you just try to avoid it altogether? I've heard of using reverse aqua regia but haven't tried it yet.
Most GF is brass or copper. I’ve seen steel watch band GF caps (gold filled on one side only) and they will go in the hot dilute nitric just fine. May take a little longer. I check the foils late into the nitric boils with a magnet. If steel is found then I keep boiling until it’s gone or just remove it from the reaction if the gold has been removed.
@@sreetips thanks for the tip. Most of the stainless caps do dissolve, very slowly, but I've had a few pieces don't don't even seem to get touched. Like some watch bodies and such. They stay nice and shiny and sometimes the gold barely even lifts off. Thanks again.
Am now waiting for the video in which you sweep your floor and recover previous metals from the sweepings. Looking at the shape of the results, I suspect that getting flakes instead of shot will make it easier to dissolve it. Now would be a good time to do some calculations to determine how much hydrochloric acid and nitric acid you need to dissolve a given amount of gold. Then you can weigh your gold, add the required amount of HCl and sulphuric, trickle in the nitric slowly, and top off with distilled water as you go to maintain the fluid levels. Less guesswork, less wasted reagents.
Leaving some behind in the filters would be more conducive to production since they will get disolved at a later date. It also allows for a more precise use of the acids as they will reach saturation and prevent more contaminates from being reintroduced into the product.
Thats basically how George de Hevesy safed the Nobel Prize Medals of Max von Laue und James Franck. Amazing to see how much the solution can hold. Must be a very dense liquid.
to make round shot you need to drop it from very high up, at least that's how they do it when they make it for shotgun shells. it has time to cool in the air then cool off in a water trap at the bottom
Lead, even in trace amounts, ruin the malleability and ductility of gold. It’s been said that lead and gold, melted in the same room, in different crucibles, will end up causing lead to get in the gold. Adding sulfuric acid will combine with any lead in solution with the gold, instantly form lead sulfate, and then it can be filtered out of the gold solution 100% it hurts nothing, costs almost nothing, and provides a big benefit. Learned this from Harold_V on the goldrefiningforum.com
What's in the bottle you use at 5:43? You say you're getting HCl out of it even though it has H2SO4 written on it, so I thought maybe it's just mislabeled. But then at 11:47 you use the same bottle but then say it's H2SO4. Just trying to follow along :-) P.S. I'm fairly certain it's actually HCl, as that's what's needed for aqua regia, but just want to be sure.
Wonder if you could improvise a p trap with a plug in you exterior portion of exhaust pipe to trap and keep rain water from coming, whe. Raining you could pull plug and rain water would then drain outside
I did this once with about 1 oz, (accidentally). I got busy with something, forgot about the solution being on heat. I came back to find a sheet of gold covering the bottom of a dry beaker and a bunch of sodium chloride (salt crystals). Added some water and removed the gold
The gold powder looks brown before you melt it on video, does it look like that in real life or does it look like gold dust? What would happen with the powder if you didn’t melt it would it stay brown or would the color come out?
The powder has a brown/orange color. In a recent video I was boiling some brown gold powder in water. The water boiled off and the brown gold powder fused into pure gold pellets - just from the heat of the hot plate. The brown gold powder can actually be cold-pressed into a pure gold bar. But I’ve never tried that.
We can never get enough gold refining. Something about it that’s so satisfying
I agree bro, wish this dude was my teacher in school 😂
Gold is like sunlight; shiny and warm. Rewarding is the chase...
It's very satisfying to watch his videos. I agree 100%!!!
Our dna, literally, the desire for gold is in our dna
I think it might be the beauty and incredible impact of the Gold on our culture... It bonds people and awakes very deep memories of gifts we gave or have been given... But its also the fact that gold is created in last milisecondes of a dying giant star at Supernova... I love all precious metals but Rhodium is orders of magnitude more precious and its properties (Extremely hard, Incredibly Difficult to Separate from PGM) and the very distinctive colour
Another fantastic video. My wife and I both enjoyed watching it. Thank you for sharing this!
Your channel is very therapeutic, amazing and rather inspiring.
I melt metals all kinds I like the satisfaction from it.
I have a couple of LG’s of old silver I’m going to refine with the copper bar fascinating.
You have started something within me.
Thankyou for sharing your wisdom with us all.
Love the channel seeing all that gold puts a smile on this jar heads face lol keep the videos coming. Thank you sir . Ooh Rah.
Semper Fi brother!
That gold shot looks beautiful. Great job!
Man you get some sweet hauls. Those stringy flakes looks really cool.
*The audio volume fluctuations of your videos have improved tremendously.*
Thanks for the feedback
I love this!! I got to try this and with your vids I think its possible Thanks for putting this out there!
It was still pretty neat to watch. Thanks Sreetips for posting. When does the "how to" manual come out?
Keep it coming old boy. Great stuff! :)
It's interesting to see metallic gold float in that dense solution. Amazing!
Thank you, professor.
Always nice work. You mentioned about safety gear. I'd be cautious about molten metal in your footwear. Looks like it could find its way in easy.
I’m now collecting the beakers and hot plates to begin. Awesome videos. Thanks for teaching us.
Wow Gold I can"t beliave amazing so beautiful upload 👍💐🤝🙏🌹
Greetings from South Florida. Keep up the great content
I really dig your vids.
I like the science.
I like the end result.
I'm gonna sub
Love your gold refining videos, although it always makes me highly nervous every time you pour into your sink without a drain screen.
Thank you for showing my theory of waterflowing the board in application. It looks like it produced finer shot, and ended clumping.
I don't think the frosting effect isn't contamination, but it's because of the temperature of the gold when you pour it. The faster it cools the shinier the bar. If the gold cools slowly, it allows crystals to form on the gold creating a frosted appearance. (examine the frost under high magnification) the faster it cools the glossier it will look. Try hitting the top of the frosted bar with your torch until the surface starts to melt. When you see the metal start to melt, pull away the torch and it will re-solidify quickly, leaving a glossy finish) This is known in the industry as flame polishing.
The way those floating metallic flakes started to almost seek each other out and group up as the solution cooled was neat…
I really like gold, and sure do enjoy watching your videos.
Love it ! Thank you.
Love those 'protective' penny loafers :P Good video :)
We call them mocasins.
If you are looking for a more rounded shot try dropping the melted gold higher up from the water.I used to make my own lead shot and it took a lot of practice to get it right.
The gold cornflakes looked spectacular! I am confused by: When you added sulfuric acid to your original aqua regia in order to ppt out any lead---and you didn't get enough to cause any visual amount of lead, but if it's there, it's there. But then you added that whole solution into your buckner funnel, so aren't you adding any lead right back into your soup?
The lead sulfate gets trapped in the filter.
Right on Senior Chief.
love the content , the vocal recording is a little quiet , i thought i was going deaf XD keep up the great work :)
I guess I’m still getting it dialed in
Your my new hero!!
If you're looking to make shot instead of flakes you should pour it through a mesh like screen door material. The size of the holes in the mesh will dictate the size of the shot you will get as an end result. If you're looking for perfectly round shot you'll need to pour it from height. The higher up the more time surface tension has to do its thing and make it more perfectly round.
Great job looks wonderful as always
Hi
I have a question about silver nitrate.
If I dissolve my silver and platinum group metals in HNO3 and after the filtration I would make silver chloride, which will then be reduced with sodium hydroxide + sugar, will I recover platinum group metals?
I know you use copper, which pushes out silver and platinum metals, but if I wanted to skip the copper method and instead of that use the chloride method, will it work?
Thanks for your answer.
Great video - Keep up the excellent job!
You added sulfuric acid to get the lead out. You didn't filter out the solution before using smb?
Except at the end - at this point you have gold crystals with possibly lead in it. or am I wrong?
You’re probably right
Look at the video again, in the beggining... when you pour the liquid gold @1:45 it splashs and spills out of the bucket...
Your right! You can see it sparking out of the pot! He needs a deeper pot with some shields!
na, less yield on the garage floor sweeps refining video
Please post a time stamp so ppl can see what you are talking about.
I did, I did, I did saw a putty cat.
@@vripscript Yeah, knowing Sreetips he definitely saves his sweepings like a professional refinery.
*What happens if you boil the chloro auric acic to dryness? Does it for crystals or a syrup? What shape would the crystals be could you try that as an experiment? From my Limited college level chemistry it isn't a volatile liquid so you shouldn't have to worry about it sublimating away*
I’ve heard that how they used to purify things back in the day, was by super saturating a solution and crashing out the crystals by cooling the solution down.
So, Shouldn’t The gold crystals that crashed out be extremely high purity?
I’m just wondering what the purity of those pieces of gold would be that crashed out of your solution.
Probably way up there. When crystals form they usually reject impurities
It would be neat to send a sample of that off to see what the purity is on it .9999 or maybe .999998?
Maybe something grooved, like a cedar shingle, would help break the flow up,
I watched those little shiny floaters for several minutes before suddenly realising how dense that liquid must be to have gold floating on it.
I get anxious whenever I see you transferring those particles of solid gold with your hands. Put a plate or dish under your hand or use a spoon to scoop out the gold. Great video!
AU is so AWWW
Very educational video 👍😊 I always like to watch you at work
What a beautiful dark solution. Almost purple.
Really interesting this video. A liquid can hardly be much heavier I think.
Was the water in the initial container with the gold filled with distilled water or tap water? I didn't know if it was tap water if the very small amounts of chlorine would affect the reaction in any way since it wasn't washed off when added. If in case it was tap water. Sorry if this is a dumb comment
I poured the molten metal into tap water
I imagine thats exactly how its formed in the earth. What a great look at chemistry and geology.
Any gold in the crust of the earth came from asteroids.The gold that formed during the formation of the planet sank to the core.
In the good ol days they took the molten metal up into a tall tower and pour the hot metal to form the metal shot. The heighth determined the size of the shot..
Sreetips, what concentration is that hydrochloric acid, or is that the same muriatic acid for pools?
This is so fascinating! As it cooled gold formed from the concentration levels? I still wonder if the gold in the brown powder state is detectable as gold or not. As in metal detector.
The brown powder is metallic gold. It should be detectable
@@sreetips Is gold in aqua regia form detectable as metal with any scanners when in a glass bottle? :)
I like the way the Gold came out the water.
Thank You For Your Service ..Puddle Pirate...lol JK..
Sreetips, this is a superb video and exactly matches my anticipated refining requirements on a weekly basis. I have a gold dredging operation in Nome, AK. Hope to be producing on the order of 5-20 ozT weekly. Refining batches of 5 ozT seems to be a healthy medium. I like your use of the classic denoXX rxn. I can suggest immerse the beaker in a cold ice/ NaCl bath. It will further reduce the temp. Question sir: considering the size of your business, do you think it would be a good idea to invest in an XRF? You could include XRF readings in your video productions and also use XRF as backup data for sales. Semper fi.
This is my hobby. I did check into it once. To own it was close to $20k. But I could rent it for $4500 per month or $1500 per week. Too rich for my small hobby operation.
By golly that’s a stunning sight to behold ❤
I like the water-cooled board. Using a spray bar that increases the flow speed might help even more.
Is there any reason not to use a ceramic plate, or just hard to find something suitable?
Wood is easy to work with. I seen a wet board on tv one time so I copied it.
@ToyFreaks, Ditto on him generating a treatise on this process ! I think that he has enough practical experience on this subject, to produce a small handbook !! With photos of course, showing all the do's, don'ts and why !! As to the frosted look ...... Anyone that has done some soldering, cast silver or lead would tell you..... The metal cooled to rapidly or the mold (mould) was not pre-heated enough !! GREAT Job Sreetips !!!!
You need more flowing water for that shot setup.
The gold is really hot and the water will expand violently as steam.
You’re not cooling it down quick enough while it’s flowing and getting churned up. Also change the size of the area the gold comes out of. Make it a smaller slit. Or pour much slower
Good advice, thank you
I think the shot is made by pouring the metal through a special crucible that has little holes like mesh that pours little streams causing droplets. At least I remember seeing it like that in how it's made. Just a thought 🤷 still cool the way it turned out.
One part of your process I've never fully understood is why do you use an oxygen enriched flame on your oxy-acetylene torch when doing the final melt into a bar? I realize gold doesn't oxidize per-se, but wouldn't you still want a reducing flame to reduce the chance of bubbles when doing the final pour?
So this is what is meant by the refiner's fire;; an appropriate analogy.
Do you think the gold started to crystalize out because the solution was just too stautrated?
Yes
Yup
A definite yesA definite yes
I think I would have ran a current through it just to see what kind of crystals would have formed
@@sreetips I looked for academic papers on chloroauric solution saturation and found nothing! Maybe you should do a few more of these and publish your findings? I'd love to see future refiners and chemists use a Sreetips citation!
just venturing guess, but if you were to keep adding more solutions of refined gold and allowing them to boil off to the super saturated state, then much like making rock candy from saturated sugar water you could probably introduce a bit of shot to it and when it cools it would really form a lot of crystals
I could have evaporated it further. But i don’t have much experience so I was fearful of a problem forming from such a highly concentrated solution.
I think they came out flakes because of the flowing water over the wood? More surface area with flakes for sure, if that’s what you were going for?
I have a question. I have been watching you for over a year and I just realized that I know you add to remove any lead but were does the lead go?
@@reverendtfg6802 yes but doesn't he burn the filter to extract or am I missing something.
Yes, I’ll burn the filters. The precious metals recovered from the filters will contain lead. I’ll add sulfuric to the gold when it gets refined, to remove the lead, again,
Another excellent invention.
That was suggested by a viewer in the comments
Does dissolved gold keep the same weight?
Streetips, Do you make your own nitric acid? Do you have a how to video?
No. Philip Bender on RUclips has the best video about making nitric acid
So I'm super curious, what is the orange gas coming off the acid mixture when you're dissolving the gold?
nitric acid fumes.
lol if you could refine your gold crystalisation technique you could open a new line in gold and silver crystal on your ebay store. Great video as ever
Master after so many times me trying different methods I like the way you did it but if by any chance you have a lil silver/copper/gold and perhaps try 5 big 🧊 cubes like the ones you had and if you can chill the water before putting the ice in pot then when the melted metal is ready for pour start dropping it just hitting the ice cubes only and it will bounce and produce shot please give it a try if you can
I have poured shot by bouncing the molten stream of metal off a block of ice. It worked well. But in this video, I’m quite certain that I had not waited long enough, and that the molten metal was not hot enough. I rushed it and got a bad result. Typical rookie mistake. You can actually see some solid pieces of gold coming out of the crucible. If I had waited for the charge to heat to the correct temperature then the metal would have behaved much differently as it was being poured on to that piece of wood.
I thank that if you cut small groves, maybe 1/8 wide. That should help the gold to run off the end of the board in small streams, instead of coming off in sheets. I believe that will help you get better shot. Have you ever thought about putting the board in the freezer?
Barry, the molten gold wasn’t hot enough. I poured too soon. If I had waited then the gold would have spattered into small pieces instead of the large chunks you see in the vudeo
@sreetips your videos are so cool and fascinating. I enjoy watching them.
It would be cool if you do this again in the future if you could weigh the beaker to find the tare weight, then once you have the concentrated solution weigh it again so we can know the density of that liquid! It has to be 4 to 5 grams per centimeter cubed. Could be even more
It felt very heavy
an old dawn bottle as a rinsing bottle?
i’m learning so many tips from you sree
Dawn is the best. Thick plastic. I’ve had those in use for almost ten years
Hey, love your videos, for years I e been melt aluminium and copper etc, do do ha e silver and gold but as investments from Australia mint, and I love how all metal works, but I feel this is above my IQ, do you have any advice for a newbie that just melts cans and wire? I dont want to blow up lol
Pete, I’ve never worked with aluminum and copper. No experience to share.
Question. When the gold is dissolved in solution I'm guessing the solution weighs more? Is there at any point a change in weight from adding chemicals to participate the gold?
It always amazes me to see a solid turn to liquid and then a solid again
Correct on both observations. The liquid is much heavier before the gold gets precipitated.
I wonder if it would be a safe addition in your fumehood to add some kind of caustic sponge, essentially an alkali gas trap or at least padding where a leak COULD be. I have to tell you I never imagined that component of your experiments, that you have acidic fumes pumping out of your station more often than I have ever seen. Good luck, will pray for you guys 🙏
Thanks, I could use the prayers. Your neighbors car pumps out far more toxic fumes than my occasional chemistry experiments.
@@sreetips lol mine probably does too. I was merely thinking of structural stuff, not so much worrying what I breathe. I'm sure you know what you are doing, given you demonstrate that everyday. I merely worry. But yeah, I definitely prayed for you and yours.
Is it counterproductive to rinse the beaker each transfer, when you are just going to add more gold, and when you ultimately want to concentrate the stuff you are pouring off? Why not just pour as best you can and then rise when the last gold is dissolved?
Good point, thank you
This is sick! 👌
Great video again ☺️
What do you know about MX3 concentrate a substitute for nitric acid. Shor refining system sells it. Is their systems any good?
Allen, I don’t know anything about it. None of the refiners that I learned from used it.
That gold is beautiful in shot form
Did those solids form on top of the liquid in the shape of snowflakes ?
I think the reason for gold jumping out of solution like that is the level of concentration... It was maxed out, is my guess, and could no longer hold that in the solution (as there was significantly less liquid at the end).
How do you deal with your gold filled stainless scrap? Or do you just try to avoid it altogether? I've heard of using reverse aqua regia but haven't tried it yet.
Most GF is brass or copper. I’ve seen steel watch band GF caps (gold filled on one side only) and they will go in the hot dilute nitric just fine. May take a little longer. I check the foils late into the nitric boils with a magnet. If steel is found then I keep boiling until it’s gone or just remove it from the reaction if the gold has been removed.
@@sreetips thanks for the tip. Most of the stainless caps do dissolve, very slowly, but I've had a few pieces don't don't even seem to get touched. Like some watch bodies and such. They stay nice and shiny and sometimes the gold barely even lifts off. Thanks again.
“I’ve got my protective gear on”
Immediately cuts to a shot of him wearing low top leather loafers while pouring molten metal 🤦♂️😂
Am now waiting for the video in which you sweep your floor and recover previous metals from the sweepings. Looking at the shape of the results, I suspect that getting flakes instead of shot will make it easier to dissolve it. Now would be a good time to do some calculations to determine how much hydrochloric acid and nitric acid you need to dissolve a given amount of gold. Then you can weigh your gold, add the required amount of HCl and sulphuric, trickle in the nitric slowly, and top off with distilled water as you go to maintain the fluid levels. Less guesswork, less wasted reagents.
Leaving some behind in the filters would be more conducive to production since they will get disolved at a later date.
It also allows for a more precise use of the acids as they will reach saturation and prevent more contaminates from being reintroduced into the product.
Thats basically how George de Hevesy safed the Nobel Prize Medals of Max von Laue und James Franck. Amazing to see how much the solution can hold. Must be a very dense liquid.
Dude my hands would have been shaking the while time doing that much gold at once.
When using tap water is there a concern about minerals suspended in it like in hard water areas?
The water here is has contaminants measured in parts per million. Not enough to report in an assay
That gold shot looks so delicious! Pour some milk on and have at it!
Could you imagine dropping 500ml of dissolved gold on the floor. I would just start crying.
That’s the stuff nightmares are made of.
to make round shot you need to drop it from very high up, at least that's how they do it when they make it for shotgun shells. it has time to cool in the air then cool off in a water trap at the bottom
Great info. However, loafers are not safety equipment. Your shoe tops should always be covered by your trouser cuffs.
Question. When gold is refined to 99.999% purity, what is elemental composition of that last 0.001%?
Probably silver,
Awesome
@sreetips what is exactly the role of the sulfuric acid in the equation. I looked online and I couldn't find any clear answers.
Lead, even in trace amounts, ruin the malleability and ductility of gold. It’s been said that lead and gold, melted in the same room, in different crucibles, will end up causing lead to get in the gold. Adding sulfuric acid will combine with any lead in solution with the gold, instantly form lead sulfate, and then it can be filtered out of the gold solution 100% it hurts nothing, costs almost nothing, and provides a big benefit. Learned this from Harold_V on the goldrefiningforum.com
@@sreetips thank you, all clear now. Keep up with those videos, very educational and well made.
you added my suggestion about pumping the water up to the top of your board :)
lets see how it works.
What's in the bottle you use at 5:43? You say you're getting HCl out of it even though it has H2SO4 written on it, so I thought maybe it's just mislabeled. But then at 11:47 you use the same bottle but then say it's H2SO4. Just trying to follow along :-)
P.S. I'm fairly certain it's actually HCl, as that's what's needed for aqua regia, but just want to be sure.
I add h2SO4 while dissolving the gold to remove any lead. After evaporating down to syrup I add HCl to the syrup to expel excess nitric, if present.
Nice video, gold is always nice to dissolve
Wonder if you could improvise a p trap with a plug in you exterior portion of exhaust pipe to trap and keep rain water from coming, whe. Raining you could pull plug and rain water would then drain outside
Good suggestion. Thank you
@@sreetips also the boars in this video is the board i was referring to the other day
I did this once with about 1 oz, (accidentally). I got busy with something, forgot about the solution being on heat. I came back to find a sheet of gold covering the bottom of a dry beaker and a bunch of sodium chloride (salt crystals). Added some water and removed the gold
How long do you heat the gold in the electric furnace for?
About two hours. But I should have let it heat longer
The gold powder looks brown before you melt it on video, does it look like that in real life or does it look like gold dust? What would happen with the powder if you didn’t melt it would it stay brown or would the color come out?
The powder has a brown/orange color. In a recent video I was boiling some brown gold powder in water. The water boiled off and the brown gold powder fused into pure gold pellets - just from the heat of the hot plate. The brown gold powder can actually be cold-pressed into a pure gold bar. But I’ve never tried that.