hey guys my name is Jason with Mount Baker Mining and Metals and today we're
gonna run a sample from some customers that have some slag from an old mine
site where they were finding gold and silver. And it assays really really high
in gold, about five ounces per ton, and then about 500 ounces a ton of silver so
we're gonna process it through our turnkey system down onto the table and
we'll gather up some samples of the concentrates and we'll send it back to the
customer. So we're going to start the sample here in the jaw crusher module.
We put the material in the orange vibrating hopper behind me. It vibrates the
material down to the jaw crusher and discharges out this conveyor here behind
me. It brings the crushed material all the way up into this fine ore bin, where the
material is held and is fed out the bottom from this vibrating magnetic
feeder here that evenly feeds the material on the disk conveyor, which
carries it up into the hammer mill, which is a 16 by 12 inch hammer mill, which will do
one ton an hour, it crushes the material it's down at a 0.8 millimeter
screen right now so we get a pretty fine crush, about 70 percent passing 30 mesh.
We run it wet to keep the dust down, it will go down onto the shaker table, all
the heavy dense material and metal will come across to this side or will go into
the number 1 and number 2 concentrates. The number 3 is amiddlings fraction that
we'll save and then the number 4 goes into the sand screw where it gets
de-watered and the coarse material goes out the top and the fine material and water
go into our buried basin here and we recirculate the water over and over
through the system.
So I got to thinkin, after we ran the sample and I saw that metal on the table
coming across and there were little bee bees and balls I thought I should
actually check the hammer mill and so I took the lid off the hammer mill, cleaned
it all out, and I got this much material. And my thought was is there may be some
bigger pieces of metal in there that didn't come through the screen, and it's
a good thing I did because - I don't know how well you're gonna be able to see it -
but a lot of this material in here is little balls of metal that didn't come
through the screen. I think that's a little ball of silver and copper there.
So you can see how how much metal was left in the hammer mill and this brings
up a really good point about, in this situation is a little bit
unique, but over grinding your ore where this material actually got stuck in the
hammer mill and wouldn't pass through the screen. And so there isn't really a
good reason to to grind the stuff 0.8 millimeter, I'm gonna suggest
to the customer that they end up with a 1.2 or maybe even a 2
millimeter screen because it doesn't need to be crushed very fine to get
liberated. Every once in a while will get sent a really impressive and cool sample
like the one you saw today. And these guys are really excited about the
results because they have hundreds and hundreds of tons of this stuff to
process, and as you can see the hammer mill and shaker table did a really good
job of concentrating out their metal from their waste. So I hope you guys
enjoyed the video, if you have any questions or comments you can give us a
call or email, all of which is in the description below. So thanks for watching
and we'll see on the next one.