How To Fire Assay For Gold
ฝัง
- เผยแพร่เมื่อ 15 เม.ย. 2022
- Running a series of fire assays and smelts on a sample of sulfide rich concentrates from Sierra Leon, West Africa. Check out this video showing how Jason creates a flux to melt down and capture the gold from the sulfides and the fire assay methods, furnace, and smelting tools he uses.
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You rock Jason! Your channel is the best tool I've found for learning practicable, real-world methods of hands-on ore refining. It really has been more helpful than I can express. Thanks again man-
Gold is Gold, If I can see it I'm all for it! Keep the videos coming, love them.
Thank you for another great informative video!!! I've learned more from your Chanel than two years of high school in metallurgical class
Good to see ya back for the spring, Jason!
The go/nogo is a function of the cost of energy as expressed in Au/Ag weight. Jason's method appears to have a very stable cost (once the Flux recipe is determined) profile.If the energy cost, in gold, is less than the Au/Ag yield, then GO, else NOGO.
I am your new biggest fan , I live in Leavenworth and have been studying blewett pass for the last twenty years and I am currently looking to filling a hard rock claim but I needed to figure out how to process sulfides this video has taken me to the next level too realizing a dream , thank you very much
Science on Saturday with Jason. I don’t have any input on the smelting results but you are rockin’ the Cerro Gordo hoodie!👍🏻
cool videos all around ...the number of skills you need is remarkable to do all of this. Keep up the good work!
Jason great content. just watched the video where you prospected up in the mountains and then assayed the gold .you do a great job
I love these videos though, ur really the most educational videos on topic, uve been anwsering all my questions an curiousity on topic in ur videos
Thx I am so glad you made a video on this subject
Nice Jason. Great professional .
Great video Jason, thanks for sharing
I love your videos mate i have learnt so much watching. cheers
Nice hoodie! Another great chemistry lesson! Slowly but surely I'm figuring out which fluxes to use when smelting computer components. Mostly MLCC's (palladium & silver) & Thick Film resistors (Ruthenium). Just ordered some Kaowool to make a furnace similar to yours. Thanks for taking the time to share your expertise with us!! Stay safe! Jim
Hey @rockman531 - would be very interested to learn what Flux recipe has been working for you
@@tech-e-cycle2608 Not smelting any more. Doing all my refining with chemistry.
Dude, I love your channel!
great presentation
Thank very much for your explanation in this video. 👍
Awesome and love the birds
Great work. Very interesting.
Cerro Gordo! Love that episode 👍
Awesome video man thank you for the great lesson. Could you make a video of you separating the silver from the gold?
Hey Jason first off I want to say that your videos are awesome especially how you are able to explain all that your doing W/ Out only leaving people confused or unable to follow what your doing & explaining . . I'm not sure if I'm even doing this right or not but I was wondering & or more like REALLY HOPING that you would possibly be willing to help if someone were to need some advice about how (if infact possible) understand what they may have done wrong during their FIRST actual attempt at refining gold with the cupel method & how I might be able to still recover all the gold because I have no idea what I did wrong but I obviously did do something wrong LoL . . Thanks buddy Steve .......
Thanks Jason great video. You can do video of any smelting and I’ll watch.
Great video!! Thanks!!!
Realy Nice exprince .. TY
Your awesome Jason. I seen where you made a huge mess by accident and you was not mad at all.
Nice it may be just a little but if you have plenty then go for it excellent video thank you for sharing five stars
Had an interesting idea, inspired by your inverted pyramid jig; build a much larger and lighter one out of aluminum, like, 3 or 4 feet square, with a screen and opening at the pyramid tip that only water can pass through, and then fix a couple of those super "massage" vibrator guns with lots of speed settings to vibrate against the metal. Fill the giant inverted pyramid with a bunch of bone dry paydirt from a place like Arizona, cover the top and then turn on the vibrators on their highest setting. Come back after some time, and wet the pyramid enough that your whole load will be damp, and turn the vibrators on low as the extre water drains through. Once everything has settled, put strong magnets on the pyramid sides around where the black sand has settled to (you'll feel it in the magnets) and have a buddy help you flip and smack your load onto a table top. In a perfect world, all your gold has settled at the tip, separated from the dirt by a layer of iron sand. After dumping out all the dirt, there should be only black sand and gold dust left in the pyramid. Remove the magnets, and collect your super concentrate.
Thanks for another informative video Jason! I am curious if you could use your electric Furnace in place of the propane furnace, or vice versa? It looks like the electric furnace has room for the larger crucible, but I may be mistaken. I'm just curious if I were to only get one furnace, would I still be able to experiment with this?
nice like it how you do it . keep it up
The birds sounds were nice!
Nice Cerro Gordo hoodie!
Dude! I get excited when I pan a snicker!😁
The Cerritos Gordo hoodie 🎉
I prsonally enjoy all your videos Jason, they are very informative & experimental. I say it is useless to smelt any concentrates or ores that gives less than 0.25 g of gold per 100 grams of material. Another thing is that borax attacks crucible if there is much. The most important thing is to have your opinion on the best recipe to be used with a gold bearing quartz vein, I just want to smelt the whole ore without any other processing method for that -as you mentioned- it is better to collect all gold once,, any advice ??
Lol the birds were pissing Jason off.. super funny, they was cussin you out bro.
Great video Jason. As a lifelong idiot I appreciate your ability to convey information. Greatly appreciate it
Thank you for all your videos. Very informative and well presented. What colleges courses would you recommend to attain more knowledge in this field?
That ore from Sierra Leone looks like prime candidate for froth flotation. First, you could run through ball mill to make very fine,
I totally agree with you
Always interesting! Did you dry the sample before weighing? It looks damp/wet on the video.
hello brother, your videos are very good, I congratulate you very much, I have a question, can you help me, I think you mixed the soil with borax, why did you put nails in the mixture, how does it separate from the iron in the square furnace?

Wait until Au goes to $5,000 or $7,500, which I think it is sure to do, and then your process will be worth the effort. Your video was really helpful to me to learn some of the basics of fire assaying, and some of the things that are done in traditional classical fire assaying that really aren't necessary under all circumstances. Thank you for this really helpful, hands-on demonstration of what can be done with minimum of equipment in a small building.
How soon?
Thanks very helpful! And the check assays you sent to the lab??
But i did love the vid . thanks
So what if you get little beads throughout your slag. why are they dispersed through everything? Great video, everything I needed to know in one spot!
BOOM,,in again
is the process just bigger when you smelt 1 ton of concentrate? id love to check our land for this also!! my granfather was using mercury and mining out there years ago.. he passed away in 1980 so i was far too young to understand what he had been doing.
What you recommend to assay out Microscopic gold from super fine black sands. They are so fine that even a shaker table doesn't' want to separate them very well. Yet if you take some of it out into the sun the golden shine is visible. Birds sound like European starlings.
Waiting for you to do a BIG smelt!
Yep - another great video - feel like prospecting yet?
Thanks for all the useful info in smelting!!! It's come in handy for sure!!!
One question tho..... I've got an orenwith high copper values. How can I get rid of the copper, its proving hard to get rid of by smelt and cuppelation. Any ideas?
You may want to add a different sulphide like lead sulphide to bind with the copper to make copper sulphide and lead metal.
In my opinion, the amount of precious metals collected would have to more than pay for the costs of the materials, energy and labor of smelting for it to be at all worthwhile. Maybe on a larger scale it might be, but not on the small scale you did. Do you think other methods like flotation or cyanide leaching would work better on this material, Especially if it is ground much finer?
Hey Jason!
Love you stuff.
Try soundproofing the workshop a bit.
Keep teaching us!
David
Any suggestions on how to soundproof a workshop? That sounds expensive
I think it's an open barn so wild birds are regular visitors.
@@mturallo compressed and recycled paper maybe? - eggtrays sort of? I'm just saying that, it would be awesome to numb the sound, if that makes sense..
- Ofc only where he would record his regular shots.
And at the end of the day, whatever works for Jason 😎
@@TechGorilla1987 it wasn't the bird I had in mind though 😊
More the screaming of high pitched sounds 🙈 whatever may work, it would be nice to cancel it out, to make it even more enjoyable to watch 😊
I kinda like the birds, even though they were a bit annoying 😁
Instead of using lead or whatever else, could you not use a small amount of sterling silver as the collector metal? Or would it create more work with separation and refinement the the bead?
That reaction to the birds xdxdxd
Cerro Gordo hoodie!
Thanks to Jason's vid on Cerro Gordo, I very watched old westerns that referenced CG and knew what a major town it was in old Calif.
What happened to all the computer waste that you run through did through did you melt that down so it kind of gold was in it didn't and it took you a long time and a lot of work don't understand how to do what you do I think you're very smart individual keep it up doing great work I've learned so much from you
A wonderful teacher question, does it need to roast the soil
In the end did you get the assay lab grades to compare with???
I've got an ore that you ought to look at. And play with. Some of the hardest crap I've ever run against. It is very interesting in the fact that I do believe it's high in silver. Somewhere in the neighborhood of about 300 G per ton. The assay say .03. I'd be interested in knowing what your opinion is of it
Wanted to ask your opinion if it js okay with you.
Outcrops grabbed from on top of the reef on the ground surface fire assayed 0.22g/t and 0.19 g/t respectively. What is your general opinion of this?
Hiya Jason
I think getting a large crucible and smelting larger batches would help reduce costs and maximize extraction. Trying to source better prices on refining materials and thinking of ways to preheat the crucible with the material can be a way to lower production costs as well. Right now I'm looking into using a concaved mirror to heat up to some extent the crucible with material. I'm just looking into it. Also thinking of making my own graphite clay crucibles.
Maybe slightly but it takes so many joules of energy to melt the charge. bigger or smaller it wont change much except maybe for the preheat of non charge components such as the crucible.
Love the info and video!!
Are you able to check a possible porphyry deposit? If so how much? & how much materials?
I think I found a deposit and I'm unable to process properly.
Is that a whole bunch of iron pyrite?
Superr topp
A little tip for cutting your rockwool lid for your furnace. Don't cut a square hole in it, a square hole has 4 weak points where the heat can concentrate and eat away at the rockwool starting in the corners. Cut a circular hole instead and the rockwool will last a lot longer as a lid. I'm sure you've seen how the corners melt and disintegrate first.
Hey Jason, what are some of the safety measures you take while working with Arsenopyrite concentrates?
Safety squints and up wind on a windy day it appears.
What unit is the temperature in ? C or F? He did say 2100 to 2200 degrees f.But when he shows the infrared meter it had two readings.I assume the larger reading is the current temp in f? Whats the buttom one?
You said lead button, so did you add lead to it? And how much is it that you added
I see you get gold in the end result but at times silver is mixed how do you separate good and silver to have pure gold ? Or can you?
How do you keep the metals from sticking to the iron?
It's probably harder to make an actual cone mold that is round I like to see how that would work when you're collecting your lead
How similar is the glass-like slag to obsidian?
So If there is not enough gold/silver in the sample to get a bead without lead how about adding gold/silver as the collector metal? It seems this might help save on processing materials and time not having lead to remove. Just keep adding to the next batch? I have no idea what I am talking about just a thought.
I don't know the answer to this, but this is a great question!
Yeh I was thinking the same just throw that prill back in the next,I have 20 kg of sulphide cons,think I shall do a few and see if it works 👍
Jason, How do you separate silver from gold? I'm not a chemist. Just wonder if possible.
Thanks P.j. Carpinteria Ca
Nitric acid
Ahoj Jason, I am sure, if this scales up, 10 oz per ton is realy good.
In Sierra Leone (no offense) they will have no problem to roast all the ore to oxides, smelt like 50-100 kg at once with collector metal and repeat with the same collector metal...
I am born raised in Nickel and Copper mining town. You have the best presentation with demonstration I have seen. Sulfides but otherwise rich ore. You got me thinking if this could be profitable for small scale. I like your complete process and equipment with calculation . Would Platinum Group metal be different?
In other videos he does a work up on paladium from Catalytic converters, so just scroll through the library. But keep in mind that the methods hes using are only to determine what the concentration is to know if its worth refining with other means.
Appreciate the reply ... I am 40 min from Two separate world scale smelters. They do accept concentrates for cash. I am having trouble finding a reasonably priced supplier of Capels in Canada.
And as a side would like to provide crushing (turnkey) service for area.
@@bcubed5724 oh, premiere français parlez?
@@nunyabisnass1141
je parle tres peu ... Mon mere en Frances.
Large french family on mother side 13 brother/sisters
How close were you to the one you sent off?
Hey did you know you can use Pepto bismol tablets instead of lead
How do you assay a graphitic gold ore?
Jason another great video, I have a question, when I’m smelting my ore and I use apiece of iron as a collector metal my piece of iron , at the end, looks all shiny and bright with different colors of metal on the iron ….it’s like the iron attracted all the metal antit stuck to the iron wtf an I doing wrong.
Also is lead a better collector metal? cupeling is the way to get the pure gold soooo. Oh the iron I’m using is some rusty rebar.
And thank you for sharing and thanks for your time
roast, grind, and remove magnetics first?
How much smoke is caused when melting gold with Borax?
So roughly 10oz AU per ton… of concentrates. I’m curious how many tons of ore it takes to generate a ton of concentrates.
How can I get clear gold bars without oxidation and gemstones
I would like to see a collab with Sreetips (YT Channel name) and Jason. They use different methods.
Curious question if you have time. What temperature would someone roast sulfides like Galena before smelting it if one wanted to use that process. I can't seem to find if there is an ideal temperature for roasting Galena anywhere for some odd reason
1200 degrees Fahrenheit. For a couple of hours, or until the sulfide are reddish brown. I am an Assayer. That was taught in my course.
@@Rick-The-Relentless thank you very much that was one of the last things I needed to be able to start pulling the silver out. I just don't have the money to invest in all those fluxes
@@Rick-The-Relentless I appreciate that a lot and I will be sure to subscribe to your channel. We own a Galena mine in New Mexico that had a historical assay that's about a hundred years old saying the ore was pulling 305 Oz of silver out of the cons. I've already harvested about 2 or 3 tons of ore that are at least a third solid Galena and will be investing in an automated or crusher this year sometime to start processing it down so I can pan it out or throw it through a sluice box. I had already bought a smelting system off of Amazon and test ran it to get some lead silver alloy bars but I haven't gone any further than that
Awsome
Great video! I just hope you don't run into some arsenic when fire assaying, make for a real bad day.
I enjoy your videos very much. I always learn something new. I respect that you welcome feedback from your listeners. As a math dude, I would highly recommend you tighten up your estimations while extrapolating the results of your experiments. Your estimate for the actual PMs after burn was 6% (0.05 vs 0.047) off and your 1000 kgs per ton estimator is a full 10.3% off the actual mark of 907 kgs per ton. This yeilds a potential 17% error when extropolating the potential mass of pms per ton. That's unecessary and significant inaccuracy imo. Done scolding now. Great work otherwise!
As a fun experiment, I saw another video using pepto bismol as a bismuth source. I know you've used bismuth instead of lead as a collector metal. For fun, can you try pepto bismol?
Ha- i saw the Cody’s Lab video too. Nice.
Cody said using pepto bismol was only a proof of concept & really expensive alternative to just buying a chunk of bismuth
How come you didn’t cook the material to get rid of the sulfur in a fryer pan
Why is the lead button black?
Wouldn’t it be prudent to roast all samples to burn off all sulfides first. That way it’s less material to deal or work with?
👍🙏
Hey Jason I got some quartz and stuff that contain gold I believe I don't want anything for it but I think it's a good video would you be interested in me sending you the stuff and you can smell it and see if there's anything there
The birds might be learning from your tests also.
I literally was looking up at my trees going what is wrong with my birds they never squawk like that lol
I think that bird was a Goldfinch...:)