Smelting Platinum/Palladium Catalytic Converters For PGMs..... Success???

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Continuing the quest for a way to direct smelt catalytic converters and recover the platinum and palladium without the use of chemicals or acids. In this video Jason looks at different flux combinations and collector metals for the highest recovery of precious metals and PGMs. Here is a link to our first video smelting catalytic converters: • Can Platinum & Palladi...
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21 май 2020

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Комментарии : 1,4 тыс.

@shaneyork300 4 года назад

Looking forward to see the beads getting smelted!! Have a GREAT Day!!!

@hillbillyohio513 4 года назад

Another awesome video, thank you for examining every angle and I personally like the longer videos!

@emandejnozka1369 3 года назад

Thanks, Jason. Raising your algorithm. Lotsa work for small recovery, so far - keep up the good work; I’m looking forward to your next video.

@pharmdiesel 3 года назад

Good job! Excellent work; I'm happy to have found your channel

@scott2296 4 года назад

I like the idea of silver as a collector, the button could then be dissolved in nitric, putting the silver and palladium into solution and leaving only the platinum at the bottom of a beaker. Then the silver and palladium could each be brought out of solution, one at a time, thus separating those two from each other.

@bloodyricho1 4 года назад

Yep I second that. Sliver nitrate is easy to separate and recover

@gladlawson61 Год назад

Chemistry is so f ing cool

@reneesalipante4611 Год назад

Would agree that increasing silver content during smelt process might help increase recovery if it’s actually the limiting reactant for pulling out the palladium. Any way to calculate that? Chemistry is freakin cool.

@SRH420Stona Год назад

Nitric acid becomes weakened from more silver being present which reduces it's dissolve ability for the PL.

@spiderdude2099 3 года назад

Just FYI, the tantalum peaks and platinum peaks for some types of xrf guns can overlap to the point where even 100% pure platinum will be read as tantalum. Codyslab has the same problem with gold and tungsten, the reason is because the gold and tungsten X-ray detection peaks are so close together the machine can’t decide which element signal it is. The same problem occurs with tantalum and platinum. Contact the customer support for your particular brand of xrf gun to determine if this is a known problem. Also try maybe shooting a sample of known platinum concentration, something where it’s impossible to have tantalum contamination and see what reading you get.

@victoryfirst2878 2 года назад

Right on Spider with the information. Could of not said it better myself.

@shockingshorts8043 2 года назад

Is that not toxic as all hell?

@mphmm 2 года назад

@@shockingshorts8043 wear gloves and don't eat any

@shockingshorts8043 2 года назад

What about fumes?

@mphmm 2 года назад

@@shockingshorts8043 respirator and/or do it outside if you're grinding

@javamocha 2 года назад

I have a suggestion for consolidating your high melting metal powders into a chunk of metal. You could take the mud from electrowinning the Pt and Pd out of Cu and dry it out to get metal powder. When we work with precious metal powders in the lab, we press them into pellets in a pellet die then melt them in an arc melter. You will not need an inert atmosphere to melt Pt or Pd so you could use a TIG torch to melt them. Use a large, clean block of copper as a hearth plate and the metal should not stick (unless you get the copper too hot). I think your Idea of adding silver to reduce the melting point of the lead alloy was a good idea.

@davidmizak4642 2 года назад

This is really interesting material. I appreciate the effort you put into providing it. Many thanks!

@daz41262010 2 года назад

hey Jason cool video man :) great to see all the skills used in smelting : I won't pretend i know much about this :) but I will say I love watching these type of videos :)

@soundadvicesomewhere9027 2 года назад

Jason keep up the great work - in the name of Science !! Thanks for your videos!!

@andrewdenine1685 2 года назад

I could watch this for days . Great stuff I'm fascinated with this . Great job

@acdcstoryptsacd 2 года назад

Love all your videos since I found this site I have used several techniques! Great descriptions fabulous RU-vid channel best online thanks for taking the time to do so it's beginners like us that would never continue or it not for people like you!

@FreshRoastCoffeeOhio 4 года назад

these vids are great, keep up the good work

@barthanes1 4 года назад

Excellent experiments, thank you for sharing.

@revolt7829 Год назад

I'm learning as you move along with your process.

@franciscoburruelbustamante111 3 года назад

Excelente video hermano saludos desde HERMOSILLO SONORA MÉXICO

@RalphReagan 4 года назад

This is what I found: One of the main uses of tantalum is in the production of electronic components. An oxide layer which forms on the surface of tantalum can act as an insulating (dielectric) layer. Because tantalum can be used to coat other metals with a very thin layer, a high capacitance can be achieved in a small volume.

@robertphiri7789 3 года назад

Any buyer for tantalum here?

@goldcic Год назад

Tantalum is very rare & used in every cell phone. It is only found in Tanzania, ,Africa using child labor. Many die in the unstable mines. They are buried in the mine.

@jamiejones6994 11 месяцев назад

@goldcic That is so sad. There is so much stuff like that that goes on in the world its hard to believe. Do you know much about the content in this video by chance? If so I'd like to ask you a few questions about it thanks in advance. Also you are very well nevermind you already know 😉

@edvriend3215 4 года назад

Thank you, Jason, for this extensive empirical research. I think this is the best research you can find on you tube. I do not understand this subject, but as you explain everything it all sounds so logical.

@odilkarimov2471 Год назад

Hello Jason, I invite you to Kazakhstan I really like your method. I have a large quartz ore deposit where I get gold for life with the use of (chemical) acids. If you could help me with your method, I would be very happy Regards Odil!

@Jskdjdmdmz 2 года назад

Great work done , very much helpful , Big Thanks

@djkevinbanger 3 года назад

Awesome Video Thanks man I just learned something new today

@nosdentroclaudiomega4484 3 года назад

Excelente Vídeo...

@michael636336 3 года назад

They used ion-exchange resins to separate the Pt and Rh. The RhCl3 is what came out of the ion-exchange resin column.

@drevil2783 2 года назад

I'm binge watching this dude. I have no f-ing idea what he is doing but i dig it it a lot.

@victorruiz7347 2 года назад

Excellent work thank you it’s a long and extensive process not easy at all

@shawnsmith9512 3 года назад

Industrial separation of cats is usually done with very high heat and using iron as the collection metal though some use copper. I also know that the honeycomb is burnt off before being milled into a fine powder in a ball mill. Also of note is that newer iron sulfide methods of extraction are being used as they can operate at a temp of only 950 deg C.

@fungusenthusiast8249 3 года назад

dang those convection currents in the flux are really cool...

@bradleyozbun1012 Месяц назад

💯 to the channel and your recovery efforts. Thx. For the knowledge.

@teodoroanguay9862 2 года назад

I always watching you're smelting... For I have some platinum for smelting...tnx for learning jason

@KD0CAC 4 года назад

I use to do diagnostics , repair & smog testing in CA , 80s-90s . And with with recently , the last 6 -8 yrs. getting into collecting electronics for repair and going after the precious metals . A few months ago , came across info that in CATs that have 2 separate bed / sections , both have platinum , but they differ in that the front bed has palladium and the rear section has rhodium . This is a 2 stage catalytic reaction to breakdown different part of the exhaust . And it is easier to process the 2 beds separately , especially when rhodium is so much more valuable . Thanks again

@szucslorant4115 Месяц назад

hello. thanks for your information. Maybe can you tell something about how possible take out the rhodium from catalyc? thanks. thats the main mission for me...

@KD0CAC Месяц назад

@@szucslorant4115 Kinda depends on your lab / abilities , the chemistry of the platinum group is difficult & much more dangerous/toxic than gold & silver . Too much for saying here ,

@bennykwong3172 3 года назад

This explains the ongoing thefts of sawing off people's catalytic converters!!

@kaziabir4999 2 года назад

I have

@OpticalFetish 2 года назад

You have... sawed off people's cats or you've had yours sawed off?

@robertcox6474 3 года назад

Very cool. These are being stollen in my area. Now I understand why. Thanks man.

@cashroyal7047 3 года назад

Now you can steal it too 🤣🤣

@deerdrickprancer295 Год назад

I ABSOLUTLY LOVE THESE VIDEOS DUDE!!!!!

@SitNSpinRecords 3 года назад

Some of those have Rhodium. Palladium will be highest content then platinum then rhodium. (Generally). Converters have different amounts of metal depending on the motor they were used on. The honeycomb is called the substrate. You don’t want that. All you want is the coating on the substrate. that’s where the metal is. The slurry coats the substrate. If you can find a way to get just the coating off the substrate, you will greatly reduce the effort and starting material. (Crushed up substrate is just more waste you have to remove.). That’s about as much as I can tell you without fear of Loosing my job.

@timw.5030 Год назад

I won't tell

@szucslorant4115 Месяц назад

hello. thanks for your information. Maybe can you tell something about how posible take out the rhodium from catalyc? thanks thats the main problem for me...

@kevinsoete7817 3 года назад

This is more fun than watching steel rust

@freddieray6660 Год назад

Xlent program, very technical and informative.

@billarroo1 2 года назад

That was interesting, my first time seeing the process😃😃 THANKS

@firehawk6188 3 года назад

A local guy! Glad I found your channel. I'm in Arlington.

@onemellofahess 4 года назад

The silver to "inquart" the lead out of your pgm button was a great idea. Excited for the Pt bead video

@Dr.GreenD17 Год назад

Thanks for the info.👍

@fokkerd3red618 2 года назад

Fascinating. Thank you

@macclark4112 3 года назад

I worked at both the Stillwater Smelter & Base Metals Refinery in Columbus Montana. We’d actually smelt down Bulk Bags of Catalyst. The end result was a black powder we sent to Engelhard Refinery for end process. They’d keep the Gold / Silver and we’d get the Platinum/Palladium. I will say we had all the mined metal from the Nye Montana and East Boulder.

@allenhammer7923 2 года назад

After smelting I don't see how it would be a black powder? That is what happens in chemical process. Were you the smelter?

@chibigon01 4 года назад

The platinum in the ceramic beads can be recovered directly from the beads with a complex reaction. I think you will have higher Pt recovery from the complex reaction process than from the smelting process.

@robertgreen9210 3 года назад

Great experiments

@kalebmaciver7117 2 года назад

Is it similar to the one that Cody’s lab did?

@rainerburgdorfer4017 2 года назад

Beautiful convection cell video!

@mikesherman8590 Год назад

I have learned so much from you Jeff and Dough thanks in this time we need this

@snarky_user 4 года назад

In addition to tantalum, I also noticed some vanadium. Both metals can be used in NOX converters. The converter you used had two distinct sections. Perhaps the upstream section was for NOX and the downstream a typical converter.

@Hobypyrocom 4 года назад

damn, why youtube havent suggested any of your videos instead those lame crazy useless videos i get till now? keep up the great work... best wishes.

@dsdw30 3 года назад

Inininininibibibibibibobibbi

@johnnylane9441 2 года назад

It does help to talk out loud. You get good feedback

@pizzacrusher4632 Год назад

the cooling slag is always mesmerizing

@alfamaize 4 года назад

In terms of using an automotive catalyst- assuming the mass of the base catalyst matters relative to how much PGM recovery you expect- I would suggest only doing the first catalyst. Generally, they will have 5x the amount of platinum or palladium in them vs. the second one. Again, finding automotive catalysts from PZEV vehicles in the 2000-2007 range will the highest potential of all PGM. After some control work, OEM's figured out how to manipulate the air-fuel control to not require the high PGM loadings of the original PZEV cars. Also- all of the gasoline catalysts in the last 30 years are all 3 way catalysts. The first one will do the vast majority of the work, the second one is there for high mass flow (like when you accelerate on a freeway). I know nothing about industrial catalysts- so it will be interesting to see your experiment.

@everydaybladesinc 3 года назад

The only thing we know for sure is who ever smelt it delt it.

@mjc42701 3 года назад

🤣🤣🤣

@blueridermg 3 года назад

😂😂😂😂

@AK47z Год назад

Whoever did the rhyme did the crime.

@everytimesheeesh Год назад

That's just hilarious 😂

@turrelleowens4594 Год назад

Dirty dog barks first.

@luronanderson4015 3 года назад

8:17 the original lava lamp! Cool video!

@ryandimaggio4843 3 года назад

Nice work!!

@Marleydog2023 4 года назад

I really dont know what the heck is going on ,but i love the the melted colours and stuff ,thanks jason.

@nunyabisnass1141 4 года назад

Using chemistry for precious metal recovery.

@antitouchable 3 года назад

I have a clue but still lost. I know the chemicals but not the chemistry or techniques. I'm use to slapping metals in a forge and making bars.

@adriantowe278 3 года назад

I like it to if only you could paint a car with it

@billyhgunn 2 года назад

Lesson number 1: How to profit off all them Converters you stole

@adamage1766 Месяц назад

That should be the #1 comment for this and any video like this. Great

@michealklonowski5267 2 года назад

well I am following what you are doing .and thanks for sharing.

@rahulbaviskar8280 Год назад

Very nice work 👍👌

@downyourtube 3 года назад

@mbmmllc The tantalum came from inside the engine. There's no platinum cause it was burnt off before the palladium was during vehicle use (wear and tear). There will always be a lower recovery on a used catalytic converter. The precious metals are coated on the ceramics, as it is in use (vehicle being driven) these precious metals are coming off and blowing in the road..BUT on a diesel semi truck the precious metals are being stored within the soot and collected above in the collector container.. on average those containers hold 2-3 oz's of particulate matter. This particulate matter holds more precious metals then on the used cones you are experimenting with. I have several pounds if you'd like to try a few samples.. let me know. I believe there are more precious metals in the particulates of the soot/ash of a diesel semi truck than in a used ceramic cone. Precious metals are sintered on the outside surfaces of the cones. As soot from the engine attaches to the cones (containing oils and other metals) they get super hot and almost sinter to the cones themselves. This soot/ash goes thru a super heat process of around 3200 f degrees during the regeneration process (cleaning process) and release these materials ..right along with the precious metals. Trying doing what you do with diesel soot/ash... I bet your results are higher.

@dumbnrduh 2 года назад

I think your probably right

@downyourtube 2 года назад

@@dumbnrduh Still wishing I could get help with it.

@gelmgren 4 года назад

Sulfuric electrolyte with metal foil as anode, metal plated over to cathode loosens precious metals wash coat which falls to the bottom of the cell.

@timdunk7278 2 года назад

Right on - excellent experimentation! Keep in mind skin contact and inhalation of platinum salts can lead to bronchitis/asthma and contact dermatitis.

@timw.5030 Год назад

You people are smart as hell

@gustavofiora5393 2 года назад

It would be useful to stir the molten metal bath to increase the contact surface of the collector metal with the PGMs and if you use copper as a collector, the ideal is to subject the PGM copper alloy to electrolysis, reuse the electrolytic copper and the PGMs remain as black powder to be refined in the bottom of the electrolytic tank, the excessive use of NaO in the flux can involve losses of Pt, the highest production cost is in the flux, sodium borate is not cheap. Congratulations for the job!!

@eshootziscrs2868 3 года назад

At 13:17, there's a sports car on the back side of the cooling pyramid just above the slag line. Now we know what kind of car left it's spirit in that cat.

@victormanuel-uk8hl 2 года назад

porsche

@AllThingsOrigins 2 месяца назад

❤ can't wait to see how you process the beads 🧑‍🏭

@oscaranderson1822 2 месяца назад

I do believe you're the first person to smelt down a converter. And show us how much is actually in it. Very good content..👍

@Shad0wBoxxer 4 года назад

use catalytic converters you pulled off yourself, if you buy them from ebay they are usually chemically treated to get all the precious metals out

@Jdalio5 3 года назад

Hence it being damp

@thefogisgone3662 3 года назад

Then whats the point in doing all this if you can just chemically treat it to get it out?

@Jdalio5 3 года назад

@@thefogisgone3662 the recovery rate is less if you leave it all together. So some jagoff's decides to extract 40% chemically of the metal than sell it at full price.

@thefogisgone3662 3 года назад

@@Jdalio5 ohh, fair enough, i have officially been learnt by the youtubes.

@frankyshh6827 2 года назад

you will never get from ebay cleaned ones are empty because those dudes use acids, and since its inside metal tube you cant get it all out, they all on ebay got 30-40% of the initial content left, but yes you better off not pay at all what was in there

@Alondro77 3 года назад

Since there's so little platinum and palladium in each converter, the chemical method with hot aqua regia is usually the best method. You just keep soaking new converter fragments over and over until the reagent is used up. Then cool the solution quickly, and most of the platinum/palladium just falls out. I found that out by accident when refining some old 10K gold jewelry. Fine grey sediment fell out of the aqua regia as it cooled, and I discovered it was metallic, then confirmed it was indeed platinum-palladium alloy.

@martinsalazar3476 Год назад

I WILL TRY THAT, THANKS!!!

@peterpearson7171 8 месяцев назад

Appreciate that. Must be worthwhile

@double_o_dan 3 года назад

cooling down... that looks pretty cool

@rogerdudra178 4 года назад

The surface of the molten metal reminds me of the surface of Pluto's big heart feature.

@saxonsk9 2 года назад

Hey Jason! Does platinum oxidize and lose weight as it comes into contact with oxygen at it's melting point? I have tried melting platinum before and it violently started vaporizing. I even tried slowly approaching its melting point but i was quickly losing the precious metal. Im just wondering if your losing some when you coupelle. Although it dont look like your losing any. Nonetheless thank you for your time making these videos. I have learned a lot.

@deaniversen351 3 года назад

oh wow so OK your near Mt Baker, cool, Everett Born and Bred, you get that sweet view of the mountain.. nice area

@slateweaverjem 3 года назад

brilliant show...

@jonathans8 3 года назад

i trust you know exactly what you're doing. still have to say, it pains me to see a 1oz silver buffalo go into a crucible in may when spot was around $16. it almost went to $30 in august!

@CuriousEarthMan 4 года назад

Hi Jason! Thanks for another great video! I am super new to most if this stuff, but this came to mind: first, why not have the raw honeycomb assayed, if it's not too expensive. I've heard once ICP-MS is common for catalytic converter assay. For what you are doing there, like the lead collector metal and how cupelling it results in a higher melting point as the lead oxidizes, could your plasma torch be helpful there? Any idea how many thousand degrees it 'burns' at, and if it would be practical to use it for heating the sample? Would an oxy-acetyline torch (5000 F?) be any help either? I also ran across a cupel last night that was rated for use with platinum or PGM. I don't know if any of that helps, esp since you are abandoning lead as a collector metal, at least for now. I just found your channel and you do some great stuff! Since I don't see pricing on your website, I will probably contact you to ascertain some costs. The idea of mechanical or thermal processes to recover metals vs. chemical processes appeals to me a great deal! Also, about a week ago I went looking for mining claims, and finding your channel certainly fills in some blanks for me! Also, I laughed at 4:40 an 'armstrong' stamping mill, single battery lol Thanks again! Oh, somehow .04% of honeycomb weight comes to mind for Pt content in car cats, but it varies a great deal, and that number may be mis-remembered..

@joshmutch5249 2 года назад

yeah was also wondering whether a nitrogen plasma torch could be useful at the end.

@mackattack6774 5 месяцев назад

Nice work

@markusaralius23 8 месяцев назад

Love your videos.

@saviolopes8573 4 года назад

Take care friend. Platinosis cutaneous and respiratory allergic reactions to exposure to complex salts of platinum. Use mask and gloves!

@wildernessunknown2641 3 года назад

He isn't making salts so he is fine but more like when oxidizes lead is more dangerous

@seeker_of_knowledge5859 3 года назад

there is always boiling nitric and hydrochloric acid to dissolve PGMs into solution to separate and get out pure metals

@GeoffBosco 3 года назад

The problem with that is how dangerous PGMs are in solution. Google platinosis. If you don’t have to dissolve PGMs you’re much better off not.

@seimwolde6759 3 года назад

Well done video

@speedbuggy16v 2 года назад

not something I am likely to do, but it is neat to watch. Especially watching the flux cool!

@patpawlowski7635 4 года назад

I’ve seen Cody’s lab hit the lead/platinum button with an oxy acetylene torch while its in the cupel to melt the bead and drive off the lead

@kieranodea771 4 года назад

Agreed oxy/acetyl torch will drive off the last bit. How ever don't blast it for to long oxy/acetyl gets hot enough to vaporize pgm's eventually

@jaydaksrules5316 4 года назад

@@kieranodea771 I did that once with gold it just suddenly vanished and left a rainbow behind luckily it wasn't much gold

@kieranodea771 4 года назад

@@jaydaksrules5316 The key is to use around half the oxygen you would normally use. Other wise an oxy/acetylene flame is so hot it will just vaporize gold and pgm's like you said. Especially when in small amount or if its in a finely divided state.

@kieranodea771 4 года назад

@@jaydaksrules5316 Also you should be able to remove all the lead from gold with normal means with a cupel. Really only pgm's have the issue of needing really high temperature to remove the last bit of lead.

@JReklis 3 года назад

Sreetips chemically refines pgm and then smelts it to nearly 4000 degrees

@scottdawson7805 4 года назад

Jason is it possible to crush the cupel’s you used to get a beads and then xRF them to examine their content for lost materials?

@josephdelp87 4 месяца назад

That looks cool as it cools.

@dalecarlisle6286 3 месяца назад

Nice to see you back on the tube.hay hay from mt st helens

@tomaszjaworski5885 Год назад

When you pour without collector metal you need to pre-heat the tip of your pyramid mold to red hot otherwise the tip solidifies before the heaviest stuff settles to the tip.

@dingharddier2435 3 года назад

It's the same cat that came on my 98 Honda Civic EX coupe they're worth about $300 if you know the right people but $60 from a normal junkyard

@Handstruckgroup 2 года назад

Your guy screwed you that particular one is worth around 600

@brandonjackson1434 7 месяцев назад

That's cool I always wondered about that

@chadknapp2437 3 года назад

quite interesting watching that cool

@samholmes5552 3 года назад

I worked at a platinum mine and we used silver as the collector metal its cheap enough to be viable and you don't have to bother with the coupelling

@jameslingren6164 2 года назад

Know anyone buying Pt orem I got a couple of ton s of it. All silver or Pt

@kitjasabsgabs1830 2 года назад

How do you know where it's at? I mean you just pick a spot and test dig or is there a way to find it then mine it. I know I can Google it but I'm old school I like to learn shit from people who do it, not just say whatever is standard. Thank you

@aaronlegend14 2 года назад

@@kitjasabsgabs1830 gotta pretend to be a nugget

@kitjasabsgabs1830 2 года назад

@@aaronlegend14 🤣

@docshotshopandforge 3 года назад

the O2 sensor is high in Pt for a start.

@frankyshh6827 2 года назад

not at all, its a very very very tiny plate on it contains pt/pd, most computer boards have more pt than o2 sensors

@reshdarkoshur Год назад

great work dear jason. yes you are. we love your work from Muzaffarabad, AJK, PAKISTAN

@waptek2 2 года назад

Cupellation a refining process in metallurgy where ores or alloyed metals are treated under very high temperatures & non oxidizing precious metals remain apart, and the others react, forming slags or other compounds

@unheilbargut 2 месяца назад

I just love watching those convection patterns in the molten stuff. 😍

@catch22frubert 4 года назад

The XRF gun can sometimes get confused, so the tantalum might actually be your platinum. I've seen gold show as lead and tungsten on XRF guns before, so they aren't always 100% correct

@ZE0XE0 4 года назад

Yep. they need to know what theyre working with to properly understand what the returning xrays mean.

@ChumpusRex 4 года назад

Yup. The signals generated from tantalum and platinum have a major feature in common (both signals have a big spike at 9.4 keV). It's similar for gold and tungsten (both have a big spike at 9.7 keV). Where the signals are similar they can be confused, so for best results, XRF software needs to have an idea of what is expected to be in the sample (this is why you get different versions for base metal analysis and precious metal analysis).

@spiderdude2099 3 года назад

catch22frubert yep, codyslab almost always displays 100% pure gold as a tungsten peak. The amount of overlap between element peaks can be huge especially for pgms

@highlysuspiciousnews8641 2 года назад

That's the fake gold the US made to pay debt to other country I forget which one. 😉

@------country-boy------- 4 года назад

hi guy - i work with advanced geopolymer technology which is closely related to glass and ceramic technology. we experiment with different recipes of exacting amounts of secret ingredients. most people studying the technology just use clay out of the ground which is full of impurities. anyways just wanted to mention that quartz (silica) can be compared to ice. Water can only hold so much soluble minerals before getting saturated and then minerals fall out of solution and settle to the bottom. Then when the saturated water freezes the dissolved minerals stay suspended in the ice. this is similar to the smelting recovery process you are using. Molten silica also has a saturation limit. I can see it would be important to have precisely measured ingredients to maximize recovery rates! if too much silica is used then some of the precious metal will be lost (absorbed) into the glass matrix. Good thing the cheap collector metals are probably more soluble in the glass than the precious metals. I wonder if oxidized collector metals could be used such as copper oxide powder instead of copper metal because glass loves to absorb and bond to oxides. the molten silica could get saturated with cheap soluble oxides so that more of the precious metal could fall out of molten solution ??? not really sure. great videos by the way - this is the first time learning about Quepel Technology (i have no idea how to spell it) - much simpler than acid recovery/refining methods!!!

@uspockdad6429 4 года назад

This is an awesome reply. I would’ve never thought of silica absorbing PMs. And so you can look more into the process, it is spelled Cupel (Cupelling). I’m learning more about it myself. I have a lot of waste material that might contain PT group metals, so planning on trying the cupelling process to recover those.

@DuNguyen-my4rq 3 года назад

Thank you much

@TheCornField_ 2 года назад

Oh I had an idea for your cone molds, you should make an overflow slit and put a second mold on the ground to catch any overflow metal so less waste

@joesmith1628 4 года назад

Ag has a lower melting point than Cu, better helping to lower the m.p. of your alloy. 25:22 - It's useful to place the metals with higher m.p.s on top, as they will melt last, while the heat from the Ag rises. Also, their higher densities will help push down on the Silver. More cost efficient to use Ag shot, than melting a coin? Haha. Whatever works! Will be Interesting to see which of your formulas produces the best yield. Cheers.