hey guys my name is jason with mount baker mining metals and on today's video we got a sample of
some cords here behind me we're gonna run came in this bag this came from ghana uh in west africa
so i'll show you the sample we're gonna run here we're gonna run it through our turnkey system and
see if we can recover any gold for them so this is kind of the characteristic of the ore they sent
it looks like it's a quartz mostly a quartz matrix with a little bit of oxidation there red oxidation
and what i've seen when i've been on my trips to africa is these miners will shaft down several
tens or even hundreds of feet and follow these narrow
quartz veins around and then they bring them up in sacks very similar to this thing here
and they fit about depending on the place 50 to 100 kilos
in a sack and they bring it up and they take it to the local milling center sometimes they
have to wait three or four days to get it milled but then they get their gold out
and go cash it in with the gold buyer so we'll do kind of a quick rundown of our turnkey system here
it all starts here with the jaw crusher module this is an 8 inch by 12 inch jaw crusher
we'll feed the sample up here in the hopper it'll get crushed down through the jaw crusher
fed up this conveyor it'll come out about three quarters of an inch minus
feed into this holding bin here this little red magnetic vibrating feeder buzzes essentially just
kind of vibrates a real high frequency feeds the material down out of the bottom of the
inverted cone there up this conveyor and that magnetic feeder has an adjustable
feed rate on it so you can meter the feed into the hammer mill here
and you can adjust it up or down the hammer mill has a rotor that goes right through there and a
bunch of hammers that spin around on that rotor there's four rows of five so that machine has 20
chrome steel hammers in it they're about 20 percent chrome for high wear rate
along the bottom of the hammer mill starting here and wrapping all the way around the bottom is a
screen and in this hammer mill it's got a point eight millimeter slot cut in it and the slots
are about four inches long they run perpendicular to the swing of the hammers and they're an eighth
of a millimeter uh 0.8 millimeters in width and so anything in that hammer mill stays in there
to look until it can come out that point eight millimeter slot we run water down the hammer mill
it mixes with the the ore makes a real nice slurry it feeds down onto our 4x8 shaker table here
the slurry runs right into that aluminum distributor trough it has a bunch of gates on the
bottom of the trough here that are adjustable so you can spread the feed out evenly over the table
the way the shaker table works is the slurry gets fed evenly and slowly across the table
and any dents ore or sulfides or gold settles down in the bottom of the grooves and works their way
this way across the table up towards the water bar here and down into the number one
and number two most of the slurry is waste and it flows right over the grooves
down into this section of the trough and out into the spiral classifier that's the tailing section
as the table comes across this way starting right about right about here just behind
all the grooves the table gently slopes upward and then flattens off just behind
these four long grooves and what that does is the quartz and the sulfides can work their way
across the table until they hit that ramp and the sulfides will work their way out past the quartz
and as soon as the sulfides leave the grooves here they can't go up the table any farther and
so they form a band of sulfides that comes down here into the number three or middlings bucket
anything that stays in these four long grooves here
can work their way up that ramp and are let out onto a flat sheet of rubber
and once the gold and other dense ore particles reach this flat sheet of rubber
the water that comes out of this water bar washes them back tries to wash them back
down the ramp the gold is so dense that it can overcome the action of the water and it bounces
all the way up under the water bar and we make this see how it's a sloping ramp here so the gold
works its way up and it it even tries to climb this ramp a little bit so you have a really nice
formed gold line that comes down here under the water bar and into the number one the sulfides
are washed backwards by the water and they will actually sometimes wash all the way
back down into the number three middlings but sometimes they'll form a little bit
of a band here and they'll come into the the number two concentrates here what we call it
and then at the very end of the table here these last two grooves what we call the
safety grooves run the full length of the table all the way across so for some reason
i have seen uh gold spheres where they get rolled up in the hammer mill they'll come out these long
grooves and then they roll back down the ramp and they roll back down the ramp but these two long
safety grooves come all the way across the table into the number two high grade and you can see
here a little bit of a profile view of our grooves it's kind of like a a swoosh
where they go gently slowly into the groove and then they hook backwards kind of like a check mark
or a swoosh and all i think there's 36 grooves on this table all the grooves in the table have that
same profile and it works really well there's very low turbulence as the gold and the sulfides come
down into that groove and the hook back here traps them so it's almost impossible once they
get into the bottom of a groove to ever come out again or be washed by the water because all the
quartz and all the water is washing over gently and smoothly over the top of those grooves so
there's quite a bit information on the shaker table so the number one the number two and the
number three concentrates are captured here and those can be processed later the number four
tailings comes down into the spiral classifier you can see it's essentially a settling basin
with a big screw auger in the bottom and all the particles that have a faster settling velocity
than this tank or this pond then can float and flow out this thing into our tailings pond
or our water retention pond all the particles larger than that will sink down and get augured
up the screw here dewatered and come out in that white bag we'll go take a look at that in a second
all of the finest finest particles and all the water are discharged out these three different
ports here on the size side of the screw and depending on which port you use there's three
different sizes or three different locations and this determines how high the water basin is so on
the very lowest port here that basin is is very small and so only the the largest particles with
the fastest settling velocity can settle down in this screw and those are that's you know if
you're talking about quartz you're probably looking at somewhere between 75 and 100 mesh
settles out at that lower point everything finer than that gets washed out into the settling pond
this one is somewhere in the neighborhood of 150 and this one is probably 200 to 250 and
finer come out with the water into our settling pond here so we use the spiral classifier for
several different reasons one is it allows us to settle out our tailings our larger sized tailings
auger them up and de-water them so that we they're much easily transported we can save
them for later we can handle them a lot easier and they don't fill up our tailings pond the fine
sediment comes out and settles out in this large underground water tank here this is this is just
a septic tank that we've buried it has about a 1500 gallon holding capacity and we recirculate
the water through the settling pond over and over and over again so we're reusing the water
but the very fine material that settles out down here probably doesn't have hardly any gold left
in it at 200 or 250 mesh is what we have the setting at even if there is gold values in here
we probably can't grind them any finer and recover them with the gravity circuit
now the stuff that augers out over here that is larger than 200 mesh still has
some value to it and it is it's sand it's fine i've done some experiment experiments
i'm hoping to do a lot more here this summer about re-grinding these tailings to liberate more gold
so anyway that was probably way more information than you ever thought you'd know about gold
processing equipment but uh let's get our sample up into the hopper here we'll have
it go through the crusher and then through the system and we'll see if we can recover any gold
back
so
well we just finished up running our sample and there's still a little bit of material on the
table and it's always good after you run the table or you know either production or with samples
to brush the table down and to move everything from the grooves over under the water bar and all
the way down to the number one so you can clean off the table get any residual gold that's stuck
in the grooves and like i said especially with a small sample you want to get everything moved over
so and get the table clean for the next one so i'm gonna just brush off the table with the soft
bristled horse brush and get it all cleaned down into the number one and number two and
then we can pan it out and take a look at what we got well i'll see if i can do this with one hand
the top three grooves here are the most important so i'm going to get those brushed out
and oftentimes there's a lot of residual gold that gets hung up there
and i'm just going to brush them all the way across under the water bar
and this is where you'll start to see that gold come out
it's coming there looks like there's some bigger flakes down here maybe that are
working their way down but i'm just going to continue to brush out all these grooves
to get all the little bits of the sample moved all the way down
and then we'll see what we have in the number one number two
so here's what's in the number two and it's quite a bit more than it is in the number one because
those safety grooves bring over a little bit more material and then again i brushed it down and a
lot of it goes to number two but we'll uh we'll pan this one out first and then we'll check on the
number one and see how much gold we got in each one all right well we got the number two panned
down here and typically what we found in the past is about five percent ends up in the number two a
little bit of gold gets down there there it is you can see it coming in there it's really fine
i can get it kind of piled up here a little bit
there you go you kind of see the line there in the pan
so there's what was in the number two and now let's give the number one a shot and like i say
there should be you know 10 to 20 times as much gold in the number one well here's the stuff that
ended up in the number one bucket and there's hardly anything in there and i bet 95 of that
came from when i brushed down the table so what i'm gonna do is i'm gonna put it in this pan
over here and then i'll pan it into this pan so i don't lose anything
we'll see if we got any gold and then i'll just bag the whole sample up and send it off
back to the customer here so let me get this panned out and we'll see what we got
i got her pan down here there's i don't know maybe a teaspoon of stuff left in
there but as i swirl this around you'll see the gold come out in the left side there
and i don't know how much we ran i didn't i didn't get a weight on the bag
but it was probably 50 pounds maybe 75 pounds what's that 20 20 to 30 kilos somewhere in there
so that's a pretty good little showing
a bunch of really really fine gold up here super powdery stuff it gets coarser as it comes across
and it looks like there's even a few larger flakes in there that are a little bit different
colored i don't know if there's any mercury in there or not but this uh this gold up here is
really really yellow really gold colored uh so it's probably a high percentage gold it's
not alloyed as a bunch of silver or copper so let me see how close i can get you here hold on
we'll try for an up close shot here here's the the super super fine stuff all along this edge here
it gets a little coarser pieces maybe up to 100 mesh there maybe a 50 mesh piece there
but it's all pretty fine
this is either an oxide or a sulfide here and then you've got some of these
bigger bigger flake looking things there
but like i said for a 50 to 75 pound sample that's not too bad
all right we're all done we got our uh number two and our number one concentrates all bagged up
and ready to ship back to our potential customer in ghana so does anybody know how to ship to ghana
well thanks guys for watching our video i hope you enjoyed it and if you have any
questions or comments or want any info on our equipment you can find our contact information
in the description below so thanks again for watching and we'll see on the next one