If bismuth is being substituted for lead in the cupellation process, it represents a significant departure from traditional methods, as lead is typically the primary metal oxidized and absorbed into the cupel during cupellation. However, using bismuth instead of lead could be done under specific circumstances, such as when lead is unavailable or undesirable due to environmental or health concerns. When substituting bismuth for lead in the cupellation process, the optimal temperature may vary compared to traditional cupellation with lead. Bismuth has a lower melting point (271.4°C or 520.5°F) compared to lead, which melts at 327.5°C (621.5°F). However, bismuth also has a relatively high boiling point of 1560°C (2840°F). When bismuth is added to the cupellation process, it's usually in small quantities and primarily to aid in the separation of precious metals from lead. The addition of bismuth alters the properties of the lead oxide formed during cupellation, making it easier for the lead oxide to be absorbed into the cupel. However, the optimal temperature for cupellation when bismuth is used would typically fall within the same range as when it is not used, which is approximately 950°C to 1050°C (1742°F to 1922°F). Traditional smelting processes often result in environmental pollution due to the release of harmful gases such as sulfur dioxide (SO₂) into the atmosphere. To address this issue, a closed-system approach is proposed, wherein sulfide ores are roasted in the presence of excess iron(III) oxide (Fe₂O₃) eliminating the need for an external oxidizing atmosphere. The controlled atmosphere system captures gases produced during roasting, directing them to a collection chamber equipped with gas collection mechanisms. Captured gases, including sulfur dioxide, can undergo further treatment for impurity removal and recovery of valuable components. This approach offers a sustainable solution for metal extraction, minimizing environmental emissions and promoting responsible resource management in the mining industry. The proposed system draws inspiration from retort-like designs, tailored to meet the specific requirements of sulfide ore processing. Through careful design and optimization, this integrated approach holds promise for advancing environmentally friendly practices in metal extraction while meeting the growing demand for sustainable mining technologies. In the presence of excess iron(III) oxide (Fe₂O₃), sulfide ores can indeed undergo a different reaction pathway during roasting compared to traditional smelting processes. Instead of forming iron sulfide (FeS), which can be undesirable due to its potential interference with subsequent refining processes, the excess iron(III) oxide can promote a more favorable reaction. ...so maybe breaking down the sulfides as such is a good first step, and then run that through the blue bowl again, and a magnetic separator too, because the iron is still present.

Thank you for doing all of this meticulous research. Your patience and determination are evident, and it pleases me to see it focused on a young man’s efforts whom I admire very very much.

Nice video. I like watching Jason's video as he takes the process from the mine to the final stage.

Your math is superb. Even I understood it. Thank you.

I was out yesterday busting up some of those rocks, I should have looked a lot closer at them. I'll have to go back & take a closer look. Great video.

Nice vid. I appreciate your level of precision. Thanks!!

Excellent work! Very unique recovery methods. I like your custom builds 😎

Always impressed by your work. Thanks for the video and as always very interesting.

This was a really well done and well thought out video.

Wow. This was very informational. Lots of techniques to assay and analyze with a very basic setup.

You my friend are one smart man.. wow. Really well presented. Science channel!!!

Very interesting video, thanks for sharing!

First time viewing one of your videos and know nothing yet of this kind of process but that handwriting is something I could only dream of haha. Good video man, a very fluent way to inspire people to understand new things.

You're very thorough. Thank you!

Thanks for the video Dave. very informative as usual.

Awesome stuff love your videos and how you explain everything Awesome stuff thanks for sharing

Excellent video. Good job !

Could you imagine the postman's reaction to picking up that box.

That was awesome! Thanks for that!

Fantastic video!

Glad u are back on!!!

I would dump the bag out and pinpoint metal detect it first. That whining singing sound of AU gets my heart pounding. Then the search is on with Gold Fever. Thanks for showing the chemical process to get to an actual payday.

I have a chunk of ore from Central City, CO that the guy who gave it to me said there is at least 5 oz of silver and 1/2 to 1 oz of gold.

Great video!

Sounded like Darth Vader when pouring the molten material into pans...

In Jason‘s last video, he was having problems with the Bismuth as well. I’ve never trusted it myself I always go with the lead it always seems to work better to me.

Most of the gold from Jason's claim seems very closely associated with the sulfides in the vein. Great video 😁👍

Great testing and video, makes me think about this box of ore I got from him as well. And how to process it. I remember watching his test. And he had about 1ozt per ton. So it can definitely be wildly different per test. Or even cheery picked for what he wanted to test. Or even that one rock.

Lots of information that is way beyond my qualifications but great video and great info

Thanks for doing this video. I too purchased a couple of bags from Jasons mine. Different material. I am not through all of it yet but the e gold is so small I need a loop to see it. I don't look to get much but it is an experience doing it.

THANK YOU

I had the same problem cuppelling with bismuth. I just end up with microscopic balls of gold all over. I'll be sticking with using lead. Interestingly enough, my findings from a 12 kg bag of Jason's "run of the mine" ore returned a result of 7.17 grams per short ton

Well this is fresh breath of air? You combine Jason’s cupelling and Sreetips chemical refining. I like that you can measure both styles on paper 😍

The is awesome and very interesting..loce seeing how you ised your own small homemade equipments to get the job done.

Thank you, keep working.

Very interesting. I have a box of the same ore that I haven’t processed yet. Although, I did pan the sand that came with ore. Found a small amount of free mill gold. After seeing your video, might re-pan tailings and dissolve heavies in AR to check for gold (with stannous chloride test).

Great video, I bought a bag of ore and I could only find a couple visible pieces but under magnification I could see more. I crushed some with a 20 ton press into a super fine powder, I started running in a blue bowl but that washed the gold away, I think it would wash threw a sluice too I bet even Jason's shaker table is loosing some. In the pan the only time I can see it is when it congregates together and I have done a second pan of some of it and still find gold this stuff is super fine. I have maybe a quarter gram in a vial of water and it has a dull brownish look not the bright gold foil look. Another observation is my bag has a allot of reddish dust where I did not see that with yours I'm thinking my bag came more from the floor of the mine than the wall because I also found a small piece of dry rotted wood with a piece of a nail in it and a couple small rocks that have pebbles stuck to them with what appears to be rusty metal. I have a second bag but only looked at the big rocks and it appears about the same as the first bag.

Hey Dave just an idea……but if you were to take some stainless steel welding rods and just welded slag onto the ends of the carabiners, it would harden it EXTREMELY hard and give a much longer life to the use of them.

I'd be interested to see if Keith Bowen's technique for fine particles and a finishing pan yielded more gold for the chemical assay. Great video. Thank you for sharing

Great video and explanation! Could the metal from the carabiners be contaminating? Also could your separating specimens be affecting the concentrations in your tests due to the point you had at the end that the concentration is variable/inconsistent?

Wouldn't it be funny, if Jason's gold mine turned out to be richer in Palladium ?

That is some high-grade stuff you got

pretty cool, i have wanted to see aqua regia on jason gold for a while

My first video of yours. Coming from Jason's channel. I got to say... you need a bigger watch :D

Hi teacher, I need your help. For the gold test, pulverizing the stone, adding hydrochloric acid, removing the liquid, adding zinc powder, and then tin chloride, is this method correct?

As a Geochemist with 33 years of experience in the field, I have to say I like your procedural processes, keeping track of everything. Now I'll give you two bits of advice. The moment you introduce the word "pan" into the concentration process, you are shooting yourself in the foot when it comes to fine gold and second, bismuth requires lower temps in the cupellation oven which creates other issues with the digestion of the various oxides. There is a reason that every ISO qualified assay lab in the world uses lead as a collector metal. Best of luck from a new subscriber! *Edit You have got to get yourself a riffle splitter. All that mixing and dividing with a sheet of brass...Just shovel it in. They are hard to find. Mine are hand made.

Do you have available plans for your little crusher? I like that a lot! I have bought 2 bags of Jason's muck, have separated the pieces out but looking for a way to crush without buying an expensive crusher that will not get used much. Thanks.

Your tool improvise was nice and i'll make like that so that I can crusher any of stones😮😮😮

Greetings from the BIG SKY. Nothing better than getting a bag of rocks in the mail.

Hi there, I was watching the grovie gold hunter, with the same martial he only gets.2 grams witch seem not a lot, I think that with your advice he could get more than that,

I got two bags and when the first one was just his waste and I pulled about .04 gm out of the dirt and dust waste. I am still crushing and I also got a bag of the large samples. With bags are worth the price. Have an idea I am using to crush rock to powder in just minutes. No dust

When separating mark both sides before separating.

Is it possible that the AR vs assay result difference was from silver that the AR would bypass? The bead looked very gold in coloring. The bathtub type rings in the bismuth cupel is curious. If you don't cupel at the melting point of gold/silver, you won't get a melted bead - Melting point of bismuth ​(271.5 °C, ​520.7 °F) Boiling point ​(1564 °C, ​2847 °F) very odd that happened. If there was an amount of copper in either collector metal, it will pull the gold/silver into the cupel and skew your results. excellent content as usual :) keep up the great work!

You only used 1/4 of the gold in solution from aqua regia. Don't you need to multiply your results by 4 to get correct concentration?

Is that minable material in a large scale? Appears to me you had more expenses in the extraction alone than the total value if the gold produced??

Greetings from Lithuania ;) I have a note. If we calculate the volume of the gold bead as a sphere 0,4mm, then we get about 0.0335 cubic mm. The theoretical weight of this sphere of pure gold would be 0.0335×19.3=0.647 milligram. Maybe it's worth re-measuring this gold bead with a caliper or micrometer and compare the weight with the theoretically calculated one?

I have had strange results with Bismuth also. I think it may have a factor because of its brittleness. and copper in it can take it into the cupel. It is fun doing it but I do find it challenging. One day I was about to give up smelting all together after 40 smelts and no positive result that night I was doing 4 cupels at the same time and God said to look and see what you have and all 4 were positive 2 where quite small and the other two were 2/3 the size of a BB so I press on. It is hard to learn a new trade with being discipled and lets face it all of it is hard work and the acids and temperatures are very dangerous mixing and boiling acids making lava is not a normal pastime for many. Sometime I wonder how I got myself into this not realizing the many dangers but I think the real goal is God refining us.

Dress that jacknife blade my son. Good vid. Liked and subbed.

If I may ask, what is the furnace you are using?

Всем привет! Наконец-то нашёлся достойный соперник Джейсону ))) Ждём совместное видео! Кто за ! Лайк )))

Have you tried using motorcycle chain in your grinder? It might last longer and do a better job

can you test for tellurium , those deposits are known for it ?

Hey , is an average of 77pm of gold and 2000 ppm of silver ore is feasible for mining ?

11.5g per ton seems low. I swear Jason said in one of his videos that he was getting 1ozt per ton which is 31g. Do you think this was purely due to the nugget effect or could there be other factors in play?

May want to pull that battery before opening and putting your fingers inside... Just a suggestion

The iron content could be from the carabiners breaking down as you grind it.

Is Jason selling bags of tailings?

almost looked like the bismuth may have wicked up the side of the cupel possibly

عمل ممتاز 👆👍🏾👍🏾👍🏾

I have some ore you can do another video with?

I've commented on J's channel when there were some complaints on the price bs value/gold content and im just like wtf. If J misrepresented anything then ok, but these bags are for hobbyists to do with what they want. Not even the mining compaines are guranteed a profit for any of the work they do, so some critics need some perspective when it comes to expecting the value of the gold one can extract bersus rhe work needed and what they paid for it. That's just reality. But i am very happy to have found an independent channel to show what their reaults were. I get to pretend for a little while that i could do this, lol. If theres anything I can say about your process it's that I'm concerned about the surface area of the iron rods you put into the crucibles, but you obviously know what you're doing so my criticism doesn't mean a whole lot.

Hello, it seems to me that you made a mistake in the calculation of the chemical analysis. You're missing the division of the sample under investigation, which you diluted. In the video, it's at 17:40. It should be (5.6 g/mT * 2). Am I right?

When it comes to chemical processing, watch Sreetips, that's his jam.

Re. Rock your crusher Why not use a chain ? I’d start with let’s say 3/8” chain links (ie. 5 links ) not only will be cheaper but also lasting longer. Anyway I like your style. Cheers….. Yvon.

AWESOME

Why don't you just dump the bag on your table top so we can see everything all at once not separated

You cant go straight to AR with the cons, you should remove as much iron and copper as possible with HCL first. It will screw with the stannis precip otherwise

Somewhere Sreetips is having a stroke.

You should always remove the free gold as you see it, because it may be lost downstream for any number of reasons. In your case, we probably would employ a blue bowl just to get what we can initially. Rather than pre-treat with concentrated HCl, perhaps beginning with the sulfuric acid is better ensuring the sulfides and silver are digested, as well. This will leave Gold and platinum group metals, so after utilizing Aqua Regia and your solution is anything but purple, then there is likely a PGM or two. I will stop there. There is a lot going on.

He is shipping waste rock?

Usual we call those "chain master links" versus carabiner.

الاول ❤ قبل مشاهدت الڤيديو

I'm getting $785/ton at $2,000/ounce? But that's not discounting mining and processing.

Dig the math.

making maths fun. (kind of)

@27:00

First, I get all the free gold the best I can, but not spend a lot of time doing that.

So many maths

at ukposts.info/have/v-deo/qGh8p69-imeU1nk.html you made a math mistake. you divided your sample by 4. the 1.2mg of your standard is equal to 1/4 of the 215g sample so your gold concentration is 4x. Your equation should be 1.2mg/53.75g. So that means 5.6g*4/mt = 22.4g/mt

For the love of God please take the battery off before you dig your hands into that metal flail of death.

I can't believe someone would buy something like that and expecting to find something interesting such as gold. This must be the best wasting time material to play with.

Is anyone really getting rich off this or is it more of a hobby

Simply Pointless. B.S. ..Waiste of time and money to find out something that you already know.?????

waste of money and precious chemicals

I love his stuff. I crushed some and got a good amount of gold. I ran it through my clean up sluicebox