Seldom do I watch an entire video that’s over an hour but your great nature and the care with which you do these procedures makes me stay tuned. Your videos are never boring because it’s obvious you have the desire to teach. I thank you for your enthusiasm and please keep them coming.
Thanks sreetips for putting so much time into these videos for us. I really look forward to all of them every week and have a lot of fun watching he process and your operation.
this is the number one refining channel on you tube!! you have upped your game sir. thank you for sharing your knowledge and putting the effort in. i bet it can get overwhelming having to film your work. cheers.
30:40 The same happens with gold. It is because the alloy metal creates interstitial space between the precious metal particles. Aqua Regia does its thing because it removes the oxidizes from the metal (with HCl); however, the alloy metal doesn’t allow the oxide to form, so the nitric can attack the precious metals without help from another acid.
I've got several more coming soon. I finally got some pure platinum metal last night. The video is uploading as I write this. I'm literally making it up as I go, and you can tell because I make a few wrong turns. Thank you.
Hey Sreetips! I just wanted to thank you for doing some refining of the platinum group metals. Not many people have done work with the platinum group, so it's much appreciated that you have done these for us. I'm particularly interested in the platinum group from a chemistry standpoint, because of their many cool abilities and uses in other important reactions as a catalist. It's also very cool that most don't oxidize and are stable for so long. So again, thanks for the awesome videos! I'll be patiently waiting for your next videos.
Take it slow. If you can, get a copy of "refining precious metals wastes" by C.M. Hoke and read it over a few times. Take baby steps, have good ventilation, and be patient. Practice good personal safety because this hobby can kill you if you're not careful. Also, there are Facebook groups that are strictly focused on this hobby. They are a wealth of knowledge as well as the forums. Studying up before doing anything will help you understand what's happening before you start using acids and other hazardous materials.
Yep, it has been said already, this is the nr.1 refining series. Normally I don't wach video's longer than ten minutes but every minute here was informative! Thanks for taken the effort in making these video's!
Most instructive videos I've seen. They are fascinating! I would love to learn how to do all this stuff. Thank you so much sreetips for the time and effort.
I love the detailed explanations, this is probably the most detailed videos I have come across on RU-vid on hot to extract noble metals, I love the whole explanations and process followed in separating the noble metals from each other, thank you for the time and effort.
I love adding a little SMBV (Sreetips-Made Baller Videos) in my youtube solution before I settle overnight. Sreetips man, you are my favorite youtuber at the moment. Your depth of knowledge and content is so profound, and your presentation is extremely well done. While I'd love to try my hand at refining, it is so out of my comfort zone, I'm happy just watching a pro do it, because I simply don't have the nerves to handle glass beakers full of boiling toxic liquid acid solutions worth 1/10th of what you do. You've got nerves of PTFE!
AS you know I worked in Labs, none of us ever fluted a filter paper that well........Great video's I watch each one at least twice.......Another gold placer or even a pound of gold concentrate ore would be good. Thanks God bless you man.
I agree with the others, even though I seen this video last year, its' still the best content for refining on youtube! Love your work and thoroughness in all your videos, and I always learn something new I didn't know or something I missed the first time through :) Have a great day and we are blessed to watch you work P:)!
Rolling on the floor laughing. The narrator says "adding sugar slowly to avoid boiling over", but the subtitles say deliberately provoking a boil over just to show off.
Bit late to the party ,but having worked in a platinum refinery ,one way of dealing with the filters was to calcine them ,i.e incinerate them in a silica tray at high temperature just leaving the solids behind .Other than that I enjoyed your video
I've never really had an interest in this type of thing but since I found your channel I have watched many hours of your content and I really enjoy it. I'm learning so much about a subject that I will most likely never have a use for :). Thank you for such rich entertainment.
I personally don’t mind if the video is long. The information that you’re presenting is invaluable! I hope that you never take these down, at least not ‘till I have taken all of the notes that I need to take!
Another night you have kept me up watching, love your videos even though I have watched enough to know what your next step is, I have to watch til the end. It's just about 1am, good night and well done again
You are doing really great job Sir. Spreading knowledge that to of a processes which are established by trial and error methods and are a intellectual property. Great Job.
Wonderful video, sreetips, and very informative. I'm glad I watched this, because I'm going to be setting up a silver cell as my entry into refining precious metals. I'm excited to see the palladium salts that came out of the slimes, and the little gold bead, fascinating. I'm off to watch PT. 2 and see how you turn that yellow powder into palladium!
I started watching the paladium refining videos and I wanted to see where the paladium originated!! Pretty dang good to get what I am guessing to be well over a thousand dollars after the paladium refine out of the silver cell filters!! Question:: I know you like to put myths about ewaste to the test, I'm would like to know if you'd consider doing an mlcc refine???? I laughed a little when I heard this because of the education I've learned by watching your vids! But I've heard from several ewaste RU-vidrs (NOT REFINERS) that the older or vintage mlcc's have 80% silver and 20% paladium in them!! I immediately thought of you and how you'd probably like to BUST THAT MYTH!!!! 👍👍👍👍 Have a GREAT Day Sreetips!!!
It's the molecules, the molecules are so few that they are just released when the silver is desolved. This will also happen with your silver incortation of gold.
Hi! Thanks for the video! 6:34 I don't think the green colour of a nitric solution indicates palladium presence . In my experience palladium tends to colour the nitric solution brown - from "tea" to "cola" (depending on the concentration). Nickel is more likely to be the culprit of the green colour, but I could be wrong, Take care!
All the silver in this video was cemented on copper or silver chloride conversion. Either way there is no way for nickel to get into the silver. Nickel is higher up in the list than copper so it won't cement out on copper when the silver is being cemented. Nickel dissolved in nitric is green. Palladium dissolved in nitric with sterling silver will appear green due to the copper in solution.
What do you use to clean your glassware? Bon ami? Been using clr with an isopropyl alcohol rinse on my glassware with a final distilled water rinse, but my drop beakers still trap gold powder on the walls.
If I get gold stuck to inside of a beaker I add about 10 or 15ml hydrochloric acid, cover on low heat, then add a few drops of nitric acid. The fumes inside the covered beaker will dissolve any gold clinging to the insides of the beaker. Then I just rinse it out into my stock pot after it cools. I use alconox glassware cleaner with a scotch brite sponge in tap water, then give it a quick rinse with distilled water.
You could have saved a lot of nitric by running the slug through a sieve and wash it before adding the nitric acid. Then add the silver to the next silver cell. Save some money.
Beginner here, will ask anyway: could the stubborn black/silver residues been made more extractable by roasting at 600f for 45 minutes in between refinings, to oxidize stubborn bonds?
I didn't watch it 100% but what I saw was a great video. Recently I made a video myself and was confronted with how hard it actually is to make something decent :D. Never thought of the almost inevitable editing studio.
one more question.. why do you refine the silver before you run it through the silver cell? wouldn't you lose most of the other precious metals in the first refining process. I know it would pollute the electrolyte with copper sooner but wouldn't it save a little more platinum at least?
Nitric/water hot soak i filtered off. Stannous tested its real green. If I put DMG in then torch to burn the precip, then can melt it to a button. The left over nitric/water liquid, put copper pipe in to drop my silver? Do I denox the nitric/water, but not add HCl, just water?
@@sreetips Ok I meant calcine to burn off nitric then borax melt it. I was told since I cant get DMG that I could use cyanide[that I have], it will be a blue precip, filter, burn[calcine] then torch. Also the zinc precip from AR dry was 70, pulled off the filters I put 56gm into hot HCl 24hr, then filter, rinse real good, then put it into hot nitric/water 24hr, then filter rinse and dry. I now have 36gm of dry tan[sponge?]The zinc would have precipitated all metals in the AR, then the HCl and nitric/water soak's would have removed the metals I dont want leaving me with gold&pgm's, correct?
I've never tried that but I suppose that it could be rinsed with distilled water and then put into the anode basket in the silver cell. Not a bad suggestion. I may give it a try the next time I process my silver cell filters. Thank you.
Great video as always Sreetips. One question, is there a benefit to melting the cement silver into shot for the silver cell versus using the silver power in the anoded basket on it's own?
I've just watched a five year old video and I'll be interested to see if you reply. Does the silver come out more or less pure from the silver chloride method of recovery versus using copper to cement the silver out of solution?
You are truly amazing, Wow! Thank you for sharing your knowledge with the world. The cups , plastic funnels, flasks, and bowls are easy. Who is your supplier of the chemicals?Great job, Please reply.
Excellent video, as always. I've thoroughly enjoyed the whole process but I'm left with a question: How many lbs of silver would you guess you've run through those filter baskets to get this recovery?
I can't remember the number of filters. Let's say twelve. Each filter had at least 1.5 kilos of cement silver run through it. So I'd estimate about (12 * 1.5 = 18 kilos). 18 kilos divided by 453 grams = about 40 pounds of silver - estimated.
Fantastic video! Amazing the amount of other metals in the silverware. Do you think this was done intentionally or was the silver just not purified when making the silverware?
hello sreetips. what size whatman filter would you recommend for filtering. what would be an all round filter. could you recommend a few filter sizes for me please. ill will be refining gold and silver.thanks in advance..love your videos. so informative.your reason I got into this
I use #1 fast flow, #2 medium flow, or #3 slow flow. #2 is a good all-around general use filter. The size will depend on how wide your funnel is. I use 12.5cm when filtering silver solutions. I like 7cm and 9cm when filtering gold solutions.
Thanks Streetips, excellent guide. But tell me what you do with platinum whih was soluted with silver? Did you pour it into the sewage? It is better to pour leftovers into the stock pot and add some thin copper wire, which after a dozen or so days reduces the residual precious metal concentrated it to next refining. About silver reduction: 49:39 - left beaker the suspension is blue - it still contains copper. It is better to rinse thoroughly, until the test with ammonia does not give a blue reaction. You can have abuot 99.9% purity without again refining.
I add the platinum solutions to my stock pot. Please see my stock pot refining series. It's possible to get high purity silver the way you described. But the only way to be sure is to run it through the silver cell.
In my job I use chemical refining silver, but ever before reduction I am testing silver chloride with ammonia for the presence of copper and nickel. It significantly reduces costs and time. Furthermore, I think that your Bach is great. I also remember him from childhood and I do not know what song it is. Probably a dance with some kind of suite, but ...
Rinsing the silver chloride until the ammonia test is clear from blue color produces lots of waste. But it does make some pure silver powder. What about the palladium? It's worth about 70 times more by weight than the silver. Silver is a carrier of palladium and traces of gold and platinum.
thank you i ve learned a lot but i still have a question (in your video you mentioned that the solution after the paladium was precipitated bluish silver-copper and that you will precipitate later the copper but you didn't) are you gonna precipitated the copper from the solution? or do you have another video on this matter? i'll apreciate you answer, thank you...
Steetips what do you make of a red solution after a nitric acid bath with military grade pins and other pins with heat for several hours. When diluted with distilled water it turns pinkish. The red solids settle on the bottom after a hour or two. Thanks J
I found Ores which are pure Metal Precip? Full of Gold and PGMs, and found a way to unlock them, Ores are Free extracted Values, are Profit? Finalizing my Testing now.
I like #2, 202, or medium flow for most filtering that I do. Ashless is good if melting the metal while it’s still in the filter. #3, 103, or slow flow for filtering gold solutions with very fine sediment.
Because it's cheap and sitting in a bottle right there for me to use. Dissolving salt in water takes another step. Plus I learned it that way and it works nicely for me.
Where's the best place to get nitric acid cheaply. The last leader I bought was 70 bucks and since then haven't been able to afford it too much.So I was using potassium nitrate and mix with sulfuric acid , Then put in the freezer overnight it and extract.Some sort of acid to seem to me a bit of sulphuric and nitric. But I haven't been having as much luck with my hard rock dissolving I would like to make my own nitric acid, Does anyone have any suggestions
I have seen you convert silver nitrate to cement silver with copper and in this video into silver chloride then to silver oxide and finally with sugar. Copper seems to create less waste rinse etc. Does Silver chloride method yield the same as copper method? Watching your videos always teaches me a little bit more each time. Recently my sterling dissolves in nitric has been yielding lots of purple sediment and green solutions. I am hoping this means I have palladium and gold yet to recover.
Jeffery, silver chloride conversion does create more waste and potential for loss of metal via incomplete conversion. I prefer cementing on copper because it gets the silver, gold (if any) and PGMs (if any). Then I run it through the silver cell to get pure silver Crystal. The slimes in the anode filter will have the other precious metals that can be recovered,
Hi there; I have enjoyed your videos for quite a while now and thank you. I do have 2 questions about this video. first why did you not attempt to precipitate the platinum with sodium chloride, and then precipitate the palladium with chlorine? and second, isn't palladium salt extremely soluble in water? thanks for your time! matt.
I didn't try to precipitate the Pt because there was very little to get in the first place, trace amounts only. DMG makes palladium easy and it get nearly 100% of the metal as the bright yellow precipitate. It's easy to filter out and It's easy to wash with distilled water because it does not dissolve in water.
Thank you for your quick response! is it the brick red palladium salt that is soluble in water? I apologize, I am new to refining palladium and there is several ways to do it, I just would like to know the best way. I am assuming that unless there is more than trace amounts of platinum definitely do the drop with DMG.thanks so much for your time and I look forward to your upcoming videos.regardsMatt
I know I'm late commenting here I use other silver refining methods than the silver cell, I wonder what would happen if you incinerated the filters, would yield be positively or negatively affected?
I love watching you videos, thanks for posting them. But one question, what is the name of the rod that you to stir the solutions? I want to order one online, but don't know the name of it. I hope to really hear back from you soon, I have so many other questions as well. But one at a time.
Very cool video! I like the longer ones. Many steps, and several different procedures represented here. You go alotta work ahead of you! So when you make the silver st of chess pieces, are you gonna make a gold set as well? Thanx again buddy!
I don't know yet. I've thought about plating one side. Making low karat gold on one side; 25% gold alloyed with 75% Sterling silver. Adding sapphires to each piece on one side and rubys on the other. Adding pure gold bands to one side.
Dangit sreets you get more gold on accident than i can on purpose! lol my solutions always turn out green . great video's i love your work. From Hutto texas here keep up the good work :O)
Ive got more videos coming. Got to go to work today - Sunday! I'll be glad when the holiday rush is over (I work at a jewelry repair shop). Then I can get back to what I love; making refining videos for my youtube channel.
Hi Sreetips. Just curious why you don't use a stir bar to help dissolve the slimes to prevent a runaway reaction? Thanks for the great vids. I have learned a LOT!
Everything he does is a experiment and he is learning as he goes, i watched it and didn’t even think about it and thats after watching his whole stock pot series!
I'd like to see a video of how you process the filters. It is so clear this refining takes so much time. I hope you count that into the price of the things you sell on eBay. You are an awesome teacher. Is this what your job is? Your videos are so much fun. Have you ever written a book on how to do this? I am retired and have a lot of time on my hands and I think I could really get into this! Like I said, you are an awesome teacher and I have already learned so much. I even guess how much gold in gram weight you had.
Laura, thank you. I'm a retired U.S Navy Engineer. Refining is my hobby. But I do work at a jewelry repair shop setting diamonds and replacing watch batteries a few hours per month.
@@sreetips My father was an engineer and got his start in the US Navy long before your time. He was also a metallurgist earning his masters in that. He worked for Western Electric and seriously was a jack of so many trades. He, like you could invent many ways to make an apparatus he needed rather than go and buy a new thing that did the same thing which is why I definitely believe he would have been quite at home refining precious metals. I have always been a rock hound though professionally I was a nurse until an injury to my back brought on early retirement. I would love to apprentice along someone like you who has the patience and knowledge to go through so many steps and consume so much time to achieve such small quantities of precious metals, however I think by the time you finish making all your pure silver crystals you may be able to have a full brick of fine silver! As for selling it, I agree, the price is so manipulated for precious metals. So I decided to buy myself some silver and a few gold coins. I did some reading and have heard it said that you should have 20-25% of your assets in precious metals so indeed you are setting yourself up well for your future income stability. I love watching you work and though I know little about chemistry, I am learning good bit. Thanks for your ability to make it all so interesting.
Can someone recommend me how to leach mineral concentrates that contain elements of the platinum group such as Rh, Pt, Pd, Ir in the metallic state or sulfides or oxides.???
when refining your palladium salts why not use formic acid and ammonia to get Palladium sponge? or just formic acid and distilled water and heat? instead of Aqua Regia
silver is a carrier of gold and platinum group metals. These metals will concentrate and accumulate in the in the anode filter from the electrolytic silver cell. I save the filters and extract the palladium and gold from them. Palladium is a by-product of silver refining.
Nice work! Does anybody think about rhodium as PM involved? Because over here in germany lots of silver-rings and -necklaces are rhodinated to prevent from tarnishing....should appear as a black undisolvable powder with high melting point.
I was wondering... you extracted several precious metals, among which platinum and gold from silver sludge. Can we assume that silver ALWAYS contains a little bit of gold, since gold will readily form an alloy with silver? As for the platinum forming an "alloy" with silver, I've read that Platinum can bind with Chloride in a specific chemical reaction to form Pt(NH3)2Cl2. When Silver Chloride and a small amount of Nitrates is added (in the form of Nitric acid), a complex chemical reaction seems to occur where there is a transitional form of platinum and silver. My chemistry knowledge is buried deeply, but I suppose it's a kind of Redox reaction. Some of the byproducts of this reaction seems to be compounds with the chemical names cis-[pt(NH3)2(H2o)2](No3)2 and AgCl. That's as far as I can take it. Since I'm not a professional chemist, nor a professor in Chemistry, I'll leave it to people far smarter than me to explain the chemistry behind these reactions :) It seems the Platinum complex described above, is something used in new cancer treatments by the way. Anyway, thanks for the video, as always very entertaining and instructive.
Silver is a known carrier of platinum group metals and gold. Especially older silver pieces made back in the day when reagents weren't as good as they are today. I bought an old silver cup weighed 750 grams, not marked, nobody wanted it so I dissolved in nitric and got over a gram of gold from that one item.
@@sreetips minus the cost can this be scaled to a profitable business model? Or not for the average person I ask as a scrapper who has hoarded e waste and love the thought of processing but even the I.c chips seems to be where chems could cost more then recovery any ideas or tips would be amazing be safe and God bless
What's the best way to get Palladium from MLCCs that have accumulated from scraping computer equipment boards? I'm pretty sure grinding them to a powder is a good start, but beyond that what chemistry route would you pursue? If you got them free, how many grams would you need to do a video about it? I use a floor scraping chisel to scrape the boards 100% free of components. Then screen or hand pick various pieces. The MLCCs are in all the small and really small bits that fall through the screen. I can send close up pictures of the material if that will help you estimate the concentration of valuable metal in the mix. Thanks.
Palladium is soluble in nitric acid, the only one of the six sister metals in the platinum group. Platinum, palladium, rhodium, iridium, ruthenium, osmium.
If it were me, I'd boil in dilute nitric acid until everything dissolves, cool, filter, then add DMG to precipitate out the palladium salt. Filter the Pd salt washing well with distilled water and refine the salt to get pure palladium. With the Pd removed, cement the silver on copper and refine it in the electrolytic silver cell.
@@sreetips just put the (de-Palladium-ed,) cement slimes in the silver cell with an anode bar on top of the basket? or do you sugar/lye then melt into popcorn first before purifying in silver cell? can I put my slimes in tge electro-basket?
What happend with the platinum that was in the main solution? You extracted Pd with DMG, then Ag with Hcl and poured all remaining solution to waste bucket or stock pot for futher Pt recovery? Looking forward to see Pd recovery :)
Platinum was in trace amounts only. There was a touch of color in the solution after extracting the gold. I think that was about it. The stannous test of the silver solution was null. So little of it that there was not enough to try and recover.
