I'm going to I'm going to demonstrate
the use of a banning plaque that we used
to separate minerals by specific gravity
when we're running a processing tests
such as flotation it's a valuable tool
that you can use you use this to
separate the minerals and then you can
look at them under the microscope so
that you can tell what you're doing when
you're running the test
we're taking approximately a hundred
milliliters of floatation slurry which
is will give me approximately 50 grams
of solid sample the first thing you do
is to wash off the slimes so that you
can see what you're doing
usually two or three washings are enough
to remove the slimes if you don't have
security intervals that you're trying to
look at okay this is about the right
amount of material on the banning plaque
I can say it's it's approximately 50
grams you use enough water to cover the
sample as something you can fluid eyes
it this is about the right amount here
and then the key to the technique is you
swirl the plaque with the sampling it to
fluidize it and at the same time that
you're swirling you hit the edge of the
vanni plaque to bring the heavy minerals
to one side and the heavy minerals will
travel towards the edge of the van in
fact that you're tapping motion is on
ok
remove the excess water and what we have
here is the heavy minerals in this case
this is a sulfide sample gold-bearing
fire right is now separated from the
gangue mineral which is mostly chords
you can now look at this material under
the microscope and see if you've got
good liberation locking or whatever
other features you want to look at there
occasionally if you're looking at a
concentrate sample that has reagents
added you form a froth on top and you
can break this froth up by spraying it
with a solution that's half gram per
liter saitek arrow dry 100 or some
similar so surfactant
you
