This is Mt. Baker Mining and Metals
We have just finished off one our spiral classifiers
And what this does it
Classify's material
by size
There are 3 different sizes for discharges
We have it set at the lowest one
The fine material stays suspended in the water
and washes out into the tailings
The coarse material
augurs
up the trough
and down into a bucket
We have it set to about 50 mesh plus
So here is all your 50 mesh plus
and than discharging out into the tailings
is your 50 mesh minus
we are running
just about 10 gallons a minute right now
I've shut the spiral off now so we can see whats going on down here
and how this works
the trough is about 3/4" below the spiral
the spiral augurs the sand up and creates a sand bed
that lines the bottom
of the trough
and then the sand that gets augured up and over the top
just rides up the sand bed all the way up to the top of the auger
This is a twelve inch diameter auger
and it is just over twelve feet long
it is sloped and just 3.5" a foot
We are looking down at the basin end of the spiral classifier
and how this thing works
is the material
from your
concentrator or shaker table
or spiral bowl
or sluice will dump into the basin here
faster settling velocity pieces
will fall down through
the water and land on hte bottom of the trough
and get augured up and out of the spiral
the finer material
that which can stay suspended in the water
will flow up and out
the whole in the side
and into the tailings pond
Now this is really dependant on the amount of water you put through the basin
For example if you try and flush 5 gallons a miunute through a tea cup
nothing will settle in the tea cup
but if you flush 5 gallons a minute through a swimming pool
only the finest fine smoke will come out the end of the swimming pool
because the basin is so large it has a lot of
are ato settle in
The deeper you make the settling basin
if you open this whole and plug this one
it would make the water level up to here
it's like the swimming pool analogy
and only the very finest material would
would be suspended and flow out the top
Here is some of the material that augered up and out of the sand screw
you can see its anywhere from
About 1/8th inch particles down to about 40-50mesh
and than here is the 50mesh minus
This is the back side
of the basin where the shaft comes through
we use a stainless shaft
running up through the pierce point in hte basin
so that it does not corrode
and this
a packing gland
that allows the shaft to come through the hole
but not leak any water through or grit
This is the drive side of the classifier
We have a 60-1 gear box
further reduced
by a chain reduction
so the final RPM
of the spiral is about 7 RPM
This is one of our tester motors
the final motor that goes to our client is a 2 hp
3 phase motor
which is plenty of power to turn this thing
This is one of our newer products the Spiral Classifier
I appreciate you guys watching all of our videos
This one is getting boxed up and sent to a client tomorrow so I wanted to get a quick
tutorial video on it and show you guys how it works
what the application is
I appreciate you watching
and I will see you on hte next video