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Importance of Survival Skills

Complete gold recovery processing line for gold ore

Today we’re going to be running some high
grade gold ore that a customer sent up. We have about 300 pounds there, and we’re going
to run it through our turn-key system, with hopper to jaw crusher, discharge conveyor
into the hopper, and another conveyor into the hammer mill, and then on to our 4 by 8
shaker table. [Crusher noises] Almost all the gold ends up coming out of
the top three grooves there, there’s a little spilling over into the next couple grooves.
And that will end up coming out this groove right here. Now we’ve stopped everything so that we
can see the gold and the separation with the other lower specific gravity materials. We’ve
got some real silvery material in there, we’re not sure what that is. The grey stuff is probably
pyrotite, and most of the gold comes out of the top groove, from across the table. And
it just makes a nice line of gold under the water bars and into the trough. Number one,
and number two, high grade coarse. Now when we’re done running a couple two
to three hundred pounds, we have to brush down the table, because the gold hangs in
the grooves and we’d be here all afternoon to get it. So we brush it down, and this is
really where we get our strong line of gold. A good part of this is smoke on the table.
The big pieces have come down already, they’re down here. These are the bigger pieces from
the ore, and then up here, this is actually fairly coarse here as well. And then we get
up here, and this is just very very fine smoke, call it micron gold, call it flour gold. When
we screen this, a good deal of this will go through a 325-mesh screen. We’re taking the gold we recovered off the
table and we’re going to screen it into 3 different size fractions. This is the 100-mesh
screen, it’s a little bit hard to see with the glare, but there’s the gold on top of
the 100-mesh screen, and there’s the gold that went through the 100-mesh screen. Now this is all the material that went through
the 325-mesh screen, and we’ve got it panned out pretty well, but you can see how fine
it is. So there’s that 325-minus. Now we’re taking this 325-mesh video through a little
loup, and it’s maybe 8 or 10-power, and you can just see the edge of it there a little
bit. Here are the results of our screen test. On
the left is our 100-mesh plus, next to that is 100 to 200, then 200 to 325, and on the
far right is our 325-minus. So you can see the variation of gold size the table captures,
and there’s a little bit more than an ounce of gold here, so the table did a great job.

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