Well we built this shaker table for processing
pulverized hard rock quartz ore. And hard quartz has a significant percentage of heavy
concentrates in the form of sulfides and telurides, in the neighborhood of five to ten percent.
So once we grind up the ore, we’re going to run it across the table, and the primary
goal is to separate the blonds, the 95% quartz light material, from the heavier cons, and
we’re going to run those into a separate bucket, ship those to the refiner. And a secondary
goal is to get as much free gold out of the pulp as we can, so that we get gold in the
vial, and we don’t have to send it to the refiner and wait for the money and pay the
commission as well. So we’re going to run this with some quartz
that’s probably in the range of 20 to 100 mesh. It has about 5 or 8% heavy black sand
in it and we’re going to show you the separation, the table does a really good job of separating
the blonds from the concentrates. And then in another clip we’ll show you up closer
how the free gold is actually separated. So we’re going to turn this on and get this
going. You want to do a shovel at a time? Yeah, a shovel at a time, let’s see how it goes. There is a step right here in this table, it comes over to this crease, the table slopes
up and that’s where the blonds stop. The table is shaking, the grooves in the table
capture the heavy material, and transport it to the left. Everything comes to the left,
but the blonds stop, and the heavies then come up the ramp in the grooves, across this
ramp, and there’s another step here. And we’re going to get a closer look at
the step. So you can see that the line where the vast
majority of the blonds stop, and over here to the left we get a little blonds carry over.
And to the left of that are some denser materials than the blonds, it shows up a little purple
there, that might actually be some gnome garnet. And to the left of that, right in here, is
heavy black sand, hematite, magnatite, some of it is magnetic. Here’s some of the garnet,
and a little carry over of the blonds. But then here is the bigger picture of where all
the blonds are going. Into the paling trough. We’ve got one drain here for the blonds.
And another drain here for the concentrates. This is pretty early in the process. We’re
not sure the optimal feed rate, or tilt or water, but we’ve experiemented enough that
this works pretty well. This is about half lead and half black sand.
And he’s feeding it over there. You probably can’t tell in the video but it’s coming
across mostly in the top four inches of grooves. Everything is going in the first slope. You
can see there’s nothing staying below the first step. And then it’s coming across
here, hitting the second step, and you can see the ruby sands, the black sands, the lead,
and then walking up the grooves. What we’ve got is lead flowing down to the right, and
gold flowing off to the left. And the gold flowing off to the left flows down and is
captured in this groove right here, which is almost pure clean gold. You can see it
coming out the end there, and across into the next groove. Some of the bigger pieces
just shoot on across there, there goes one now. The smaller pieces and the pieces you
see coming out the end here, these pieces of gold are in the neighborhood of 100 mesh
to 200 mesh, and they’re coming across this groove here as a solid gold line, without
much contamination. We’re still in the developmental stage of
this table, and so we’re trying to figure out where to put the gold drain. And I think
we’re going to have two or three of them. But we have yet to figure out where all that
goes. And you can see here on the table, the build up of gold in the corner here.
And this table’s been running, and there’s a slug of led coming down, into the three.
That’s the biggest piece of gold right there coming to the end of the groove, and it just
shoots on across, and gets hung up, it’s not going to make it down to the next groove.
And it’s pretty well cleaning up now, pretty much basically all our gold has ended up in
the left hand side of the table, and all of our lead down below it, out the drain. And
this is what we call our con strain.