Isn't it amazing that we live in a day and age that we can turn on our phones and we can be taught so much just from a video. Thank you for your hard work. Learned a lot.
Top job !!! Great work there Keith , nice panning sir , 👍👍 it's very fine stuff indeed . So everything from the sluice that isn't caught by the matts ( ie: visible Gold ) goes in to the tank for leaching . And that overburden from your panning demonstration , don't forget to throw that in the tank as well . Great production and process is nice to watch . 👌✅ KEEP AT IT . Cheers Ned . ✌
@hardrockuniversity7283 We also use an impact mill, and while it definitely helps, your panning is still next level and beyond mine. I'm considered good, but I definitely can't clean it up as fast as you do. Speaking of impact mills, we are looking to upgrade ours (home fabricated powered by a 22 HP Predator) to a Stutenroth to increase tonnage. What sort of mesh do you typically get on the first pass through in your Stutenroth? Most of our gold is of decent size for lode gold and 60% free. (This region is known more for pockets). Our current impactor has a 30 mesh screen at the discharge point on the front plate, so to date, we have not had a need to design any sort of return system and re mill, even though a percentage is definitely still encapsulated in our coarser table tails.
Hmmm... been a while since I measured it, but about 50% passing 15 mesh on the first pass for a Stutenroth 2 TPH that we have. We then screen and recirculate the oversize, We can get 500 Lbs/hr if the ore is dry down to 200 Lbs/hr if it is damp due to the reduced throughput of the screen. My BOB mill also does about 200 250 Lbs per hour in this installation but the ore must be nothing more than a little damp. It can run wet, but you would lose the classification and material transport after grinding. Plans, $100. 🙂
@hardrockuniversity7283 How do I order plans for the BOB. Offhand, what metal did you use on your Stutenroth paddles? We're using 1" T1 and the ore is really eating it up even though it was heavily hard faced. At current steel prices, it's about 600 bucks a whack to replace the T1 paddles and there must be less wearing options out there.
Nice recovery Keith. From my experience with wooden boxes, you should set up a schedule to flush the bedding out and pan it too. The rate you do it at is trial and error based on how much you are putting through the box. Maybe once every week if you are running it daily. Another time saving idea would be to get yourself a little clean-up sluice that you can run in the shop and just save your cons up until you have a pail full, unless of course you are running individual samples. A cleanup sluice really cuts down on overall panning time.
Agreed. Right now we are doing a lot of stopping and testing to see how long it takes for the sluice to load up and start losing some gold. That was a three hundred pound sub-batch.
BTW, the results of last year's limited test are now in. Within the rather large margin of error of the small scale of 70 Lbs: About 80% total recovery, of which 50% was gravity, 35% was tank leach, and 15% was pad leach.
@@hardrockuniversity7283 That is an OK recovery, not fantastic but you need to balance throughput with grind size to fine tune return. You know that, why did I type that? LOL. Best of luck.
@@hardrockuniversity7283 At the Bamingui River diamond mine we had fine gold. Some Geo before me had made a big sluice, like 4' x 12' that we ran from the fines overflow at the feed head to the jigs. I made one that was about 6" x 24" long and put it right at the end where the last of the jigged fines come out and mine caught more gold than the big one. Enough to buy a coffee once per week 🤣
I've been practicing your panning technique and I see where I've been going wrong. When you tap at one o'clock, you are tilting the pan, at what looks like five o'clock?
@@hardrockuniversity7283 That relieves my worries then. Old machines from long ago being damaged and discarded, or repaired inside [or outside] of a mine could have been the source of the sphere maybe then.
Excellent sharing and learning curve. Always learn something new every visit. Stay golden Eve & Keith 👍✌️🇺🇸⚒️⚒️⚒️⚒️
Thank you
Isn't it amazing that we live in a day and age that we can turn on our phones and we can be taught so much just from a video. Thank you for your hard work. Learned a lot.
You are most welcome. Yep, times have changed.
@@hardrockuniversity7283 But have they really? A 49er from 175 years ago would immediately recognize that sluice and know exactly how to use it.
Times have changed. People haven't.
Top job !!! Great work there Keith , nice panning sir , 👍👍 it's very fine stuff indeed . So everything from the sluice that isn't caught by the matts ( ie: visible Gold ) goes in to the tank for leaching . And that overburden from your panning demonstration , don't forget to throw that in the tank as well . Great production and process is nice to watch . 👌✅ KEEP AT IT . Cheers Ned . ✌
Exactly. Cheers Ned.
Love your wash plant-you aRE all set up
Two thumbs way up on your panning technique Keith!
Thank you
Man, I'm good panning 100 minus fines, but you really have some next level panning skills.
Loads of experience. Plus, the impact mill rolls flakes up into balls.
@hardrockuniversity7283 We also use an impact mill, and while it definitely helps, your panning is still next level and beyond mine. I'm considered good, but I definitely can't clean it up as fast as you do. Speaking of impact mills, we are looking to upgrade ours (home fabricated powered by a 22 HP Predator) to a Stutenroth to increase tonnage. What sort of mesh do you typically get on the first pass through in your Stutenroth? Most of our gold is of decent size for lode gold and 60% free. (This region is known more for pockets). Our current impactor has a 30 mesh screen at the discharge point on the front plate, so to date, we have not had a need to design any sort of return system and re mill, even though a percentage is definitely still encapsulated in our coarser table tails.
Hmmm... been a while since I measured it, but about 50% passing 15 mesh on the first pass for a Stutenroth 2 TPH that we have. We then screen and recirculate the oversize, We can get 500 Lbs/hr if the ore is dry down to 200 Lbs/hr if it is damp due to the reduced throughput of the screen. My BOB mill also does about 200 250 Lbs per hour in this installation but the ore must be nothing more than a little damp. It can run wet, but you would lose the classification and material transport after grinding. Plans, $100. 🙂
@hardrockuniversity7283 How do I order plans for the BOB. Offhand, what metal did you use on your Stutenroth paddles? We're using 1" T1 and the ore is really eating it up even though it was heavily hard faced. At current steel prices, it's about 600 bucks a whack to replace the T1 paddles and there must be less wearing options out there.
Pretty awesome stuff guys!
Thank you
Supa interestingkts mr kieths ..😁pip pips and carryon
Nice recovery Keith. From my experience with wooden boxes, you should set up a schedule to flush the bedding out and pan it too. The rate you do it at is trial and error based on how much you are putting through the box. Maybe once every week if you are running it daily. Another time saving idea would be to get yourself a little clean-up sluice that you can run in the shop and just save your cons up until you have a pail full, unless of course you are running individual samples. A cleanup sluice really cuts down on overall panning time.
Agreed. Right now we are doing a lot of stopping and testing to see how long it takes for the sluice to load up and start losing some gold. That was a three hundred pound sub-batch.
BTW, the results of last year's limited test are now in. Within the rather large margin of error of the small scale of 70 Lbs: About 80% total recovery, of which 50% was gravity, 35% was tank leach, and 15% was pad leach.
@@hardrockuniversity7283 That is an OK recovery, not fantastic but you need to balance throughput with grind size to fine tune return. You know that, why did I type that? LOL. Best of luck.
@@hardrockuniversity7283 At the Bamingui River diamond mine we had fine gold. Some Geo before me had made a big sluice, like 4' x 12' that we ran from the fines overflow at the feed head to the jigs. I made one that was about 6" x 24" long and put it right at the end where the last of the jigged fines come out and mine caught more gold than the big one. Enough to buy a coffee once per week 🤣
We need larger sample sizes and better statistics to really know. That takes time-especially on my budget. Next test 91500) test underway now. 🙂
Great news
Seems to be going pretty smooth.
I've been practicing your panning technique and I see where I've been going wrong. When you tap at one o'clock, you are tilting the pan, at what looks like five o'clock?
Down at five, correct. Note the uneven water level.
Progress for Au.
The cons are drying now. Then smelting.
Awesome work Keith and Eva! (~_^)-b
Thanks HB
Nice job Keith , just out of interest, what is the maximum height the air classifier will push the dust?
Don't know. This is about 8 feet.
Sure hope that wasn't a bearing out of your crusher!
Apparently not. I was checking for the noise less than a day ago and the bearings were cool. Just a brutal environment.
@@hardrockuniversity7283 Hmmmm...
Wonder where a steel sphere would come from if not a bearing...
Maybe it was already in some ore in an ore pile?
Yep, from a small stockpile.
@@hardrockuniversity7283 That relieves my worries then.
Old machines from long ago being damaged and discarded, or repaired inside [or outside] of a mine could have been the source of the sphere maybe then.
Pretty confident of that