🔍
URBAN MINING! Recovering gold, copper, precious metals from PCB's without chemicals - YouTube
Channel: mbmmllc
[0]
So we are very excited because we finally
have a system in place here to run these circuit
[7]
boards. And I have four different bins, I
got back from the scrap yard and picked through
[12]
their electronic boards & circuit boards.
And I tried to separate them into four different
[19]
categories. This bin, they’re all brown
on one side and green on the other, they look
[26]
like they’re older boards, some have a whole
bunch of stuff on them. I think that’s the
[34]
low-grade stuff. Here’s the next separation
I did, these are green on both sides, but
[43]
they don’t have a whole lot of stuff on
them. They seem to be smaller pieces, here’s
[54]
an old clock maybe, or a VCR. This is the
next grade. Here’s the next grade up from
[65]
that. This stuff has all kinds of solder and
wires. And there’s a chip with a little
[76]
gold corner. And you can see here in the light
that’s all, I think, copper wiring, so there’s
[84]
a lot of copper in that board. And this is
the highest grade stuff, and I’m not quite
[90]
sure what all this came out of, but you can
see a lot of gold corners in these heat sinks,
[96]
I think there’s gold as well. All these
different boards, some of you probably know
[105]
exactly what these came out of but there’s
a little gold chip corner, there’s another
[109]
one there on this board. Here’s some more,
there’s another gold corner. So what we’re
[120]
planning on doing here, here’s our system,
here’s our hammer mill, bolted to a couple
[131]
ecology blocks. A shoot down onto our shaker
table.
[141]
And it’ll make 4 cuts here. This first bucket
in this green tub is the waste, the tailings,
[150]
there won’t be any metal in left in that.
This bucket here in the black tub is what
[157]
we call the middlings, that’s where most
of the the copper will go, and maybe the solder
[163]
as well.
[165]
And then out of these two ports here, this
one on the left is the highest grade, that’s
[171]
where all your free gold is going to go, and
all your most very dense stuff. And this one
[177]
here is called your number twos, and these
are your two safety grooves, and the material
[184]
that is the heaviest but not quite heavy enough
to get into the gold hole number 1 will get
[192]
into number two.
[195]
And there’s the system, it’s a hammer
mill and a wet shaker table. And I’m going
[203]
to start with the lowest grade stuff, what
I call the lowest grade stuff, and we’ll
[209]
run all that, show it running on the table.
Step it up to the blue bin, and then go all
[216]
the way up to running what I call the highest
grade stuff, and whether it’s the highest
[219]
grade stuff, we’ll see.
[221]
Anyway we’ll get this going here and show
you how it works on the table.
[426]
So here’s a sample out of our number three
hole, or the middlings hole. And you can see
[433]
there’s a bunch of copper in there but it’s
also mixed with a bunch of boards still. And
[439]
for this first trial run, we didn’t have
the splitter in the right place between the
[443]
middling and the tailings. So you can probably
clean that up quite a bit just by adjusting
[448]
the splitter. This can be re-run on the table
again, and upgraded even further, so you can
[456]
get it quite a bit cleaner than it is now.
[463]
This is the gold pan out of our number 2 hole.
You can see it’s pretty much pure metal.
[469]
It’s a lot of copper, a lot of solder. But
I don’t see any pieces of board or epoxy
[482]
or anything like that. It’s all metal.
[485]
And that gold pan there out of the number
two hole, there’s probably 20 or 25 pounds
[490]
of stuff there. So it’s pretty dense stuff.
[495]
And here is the stuff we panned out of the
number one hole. Here’s a close up of that
[507]
gold line. It goes all the way across there.
[517]
Here are the screens we use in our hammer
mill. And the one we have installed for the
[523]
test we just ran is this screen right here.
It’s a half millimeter laser cut slot,
[533]
⅜ AR, 400 steel. And we got about 50 pounds
per hour, plus or minus, through, with that
[543]
screen size, so we’re still in the experimental
R&D phase. We have some different size screens,
[550]
this one is about a millimeter, and this is
a larger one at about two millimeters. So
[556]
we’re going to play around with trying to
get the throughput up, maybe we don’t have
[560]
to grind it as fine as we did, or maybe there’s
a two step grinding process, where you grind
[566]
it down to 2 millimeter for the first hammer
mill, and then through a half millimeter.
[571]
But we’re going to keep working on this
and we’ll keep you updated as we go.
[578]
So there’s the results of our tests, and
we ran probably fifty or sixty pounds of boards,
[584]
and ended up with probably close to 25 or
30 pounds of metal out of them. So there’s
[591]
a lot of metal and valuables in there.
[594]
Don’t forget to like, comment, and subscribe.
And if you’re interested in learning more
[601]
about the equipment or the shaker table, give
us a call or email, all of which is in the
[607]
description below. Thanks again!
Most Recent Videos:
You can go back to the homepage right here: Homepage