hey guys my name is Jason with I'm Baker mining metals and on today's video we're going to be
crushing up some oyster shells for one of the biggest shellfish processors on the west coast
and these guys are interested in making a product out of their waste shell they've got literal
mountains of this stuff sitting around on their property and they're looking at using some of
our Crushers the jaw Crusher or the hammer Mill here behind me to turn this waste product into a
revenue stream for them they've got Industries such as the chicken feed industry they've got
fertilizer industry soil amendment stuff they've got people looking at doing uh landscape mulch
with it so there's a bunch of stuff they can do with these oyster shells but they've got to get
them crushed up to the right size first so let's get our Crushers going and we'll see if we can
make a product they can use so these are oyster shells they sent to us but in the past we've done
oyster shells we've done clams we've done mussels we've done crab shells and lobster shells so this
is a really really big industry actually this crushing up of these waste shells this company is
after a product that looks something like this I believe this is for chicken feed they use this to
supplement the chicken diet for calciums for their eggshells and so this is what we're going for
but the problem with hammer Mills and jaw Crushers is they're great at sizing a top size so like
a half inch minus or a three-quarter minus but they're not good at sizing on the back end or the
downside so we can get a product that's no bigger than this but there's definitely going to be some
smaller stuff in there so let's look at some of the screens we're going to use today in the
hammer Mill in particular I've got two different options this is a three-quarter inch hole here
if that doesn't work or that gets too big a size I've got a half inch slot and I can go smaller I
can go quarter inch or you know holes or slots or squares whatever they need but these are the two
I had on hand on to to run their sample and my thought is is that even if you get a little bit
oversized through these holes most of it is going to be in this size range that we're looking for
and you don't want to over crush it and the finer you get the more fines
you're going to have so I would rather try and put that bell curve of sizes
out of the hammer Mill right at the peak right at this peak which is going to be a little bit
oversized a little bit undersized but most of it in this range so that's what we're going to
try today we're going to start here with the 6x10 jaw Crusher just because it's easy I can just plug
it in and Crush some shells through it I think they're going to be mostly oversized but we're
going to try it and see what that looks like if that doesn't work we're going to move over
to the 16 by 12 Hammer Mill here and I'll change out the screen I'll show you that whole process
and then we can run our samples through the two different screens and see how that works
first thing I'm going to do is get the hammer Mill screen in and I got to disconnect all the
hoses because we're going to run this sample without water so I'm going to disconnect the
hoses I'm going to take the four bolts that hold the lid on off and then we'll lift the lid off
the forklift and I'll show you what the inside looks like and how to change that screen well
they have the lid off now I wanted to show you what the inside here looks like while I got it off
and looking up in there there's the feed chute and we've got replaceable armor all the way around
for wear surfaces these two up here get worn the most actually
side armor here that is all bolt on and replaceable and as you can see it comes
really pretty clean I mean I was running this yesterday with some gold ore in it and it's not
like there's a bunch of sand and muck and stuff all stuffed up in there so it comes pretty clean
here's the rotor assembly of the mill this is right here is the wear surface of the Hammers
so you can see that these are fairly new I've probably run maybe a couple tons through here
but you can see they don't wear very fast I mean I'm gonna get several tons I mean several I'm
going to get 20 or 30 tons uh these set of hammers before they wear out and oftentimes
what will happen is the leading edge here wears down and rounds real bad and then you
can take the Hammers and turn them around and you get a whole nother surface on this side
so you run for 15 or 20 tons turn the Hammers around and get another 10 tons out of them
there's the screen it wraps all the way down underneath and comes up to a stop here
so I'm just going to take that screen I got to loosen the armor bolts there's lower armor here so
I'm going to loosen those and then I'm just going to push the screen out backwards it rolls out and
then I'll roll a new screen in Bolt the armor in put the lid back on and we'll be ready to run all
right well now I got the screen started out and I can just use this pry bar pry to the rest of the
way out this is a way easier job with two people but you just kind of work it up out of there
and that screen will just roll out I gotta get with the hammer and bang around a little bit
but I'm Gonna Roll that screen out and then I'll show you how to roll the other one in
foreign
there we go I've got the hold screen and we're going to slide it right in there
there we go just get it wrapped around I'll get it banged in there and we'll be
Off to the Races here okay our screen's in there we're all set to go I don't know if I
mentioned earlier but these are Chrome iron hammers they're about 20 Chrome
and they're extremely abrasion resistant so that's what we use for General aggregate
crushing or oyster shells stuff like that glass recycling glass and then for the electronics
and the pcbs and the recycling and stuff like that we use manganese steel hammers for those
thank you
foreign
well we got the jaw Crusher and the hammer Mill sample run and we're going to start
with the jaw Crusher this stuff actually came out a lot finer than I thought it would there's
a lot of powder in here so what I'm gonna do is I'm gonna take the stuff and I've got
three different size screens here I've got a half inch a quarter inch and an eighth inch
and so we're going to screen the shells through these three different fractions
through them screens and see what percentage of each size we get
here's the screen results from our jaw Crusher sample
and starting over here with the largest this is the half inch plus
and it's really pretty nice looking stuff that would make great landscape mulch then moving
over here this is the half inch to quarter inch and that is also really nice looking stuff again
landscape mulch probably there's I'm sure there's an application for that this is the quarter inch
to eighth inch and I think this is probably the closest that we came to the customer sample I'll
show you that here in just a second but this is kind of what they were shooting for I think
so that's that pile and then this is the eighth inch minus so it goes eighth inch all the way down
to powder and that's really nice looking stuff and I don't know if that's like a fertilizer product
soil amendment you know add it to compost or whatever so there's there's the four piles and
amazing to me again I'm really surprised how well the jaw Crusher did but all these piles
are about the same volume roughly I believe and so you get a really nice even distribution of
sizes when using the jaw Crusher in my hand here is the sample set from the customer
and there's the pile of stuff that's quarter to an eighth so I think it's pretty much the
same stuff and here's the screen results from our Hammer Mill with three quarter inch holes and you
can see right away that there's hardly anything up here on the half inch plus side and the most
material is down here on the eighth inch minus so I mentioned earlier about that bell curve and
this is a good representation of that bell curve from the Jaw Crusher it's like it went up and
was plateaued across all four sizes whereas at the hammer Mill the bell curve has been shifted
over to the right so there's it kind of ramps up here and then you have the most volume and
the fine stuff I don't know if that makes sense to anybody but um hopefully you understand what
I'm trying to explain but again this is the same size fractions half inch plus half to quarter
quarter to eighth this is the range that the customer was looking for
and then eighth inch minus I am not going to put this screen in there because I need to talk with
the customer first and figure out if they had a preference would they rather have more fine
material or would they have more coarse material because this is the finer screen out of the two
the hammer Mill screens the three-quarter inch holes is going to give a bigger product and with
this screen you're going to actually get more and more fine stuff so I've got our our Hopper
full of oyster shells here they're all Mucky and gooey and wet we're going to turn the vibrator
on we're gonna feed out this Chute here into the spiral conveyor gonna go up into the hammer Mill
we're going to add about two or three gallons a minute to the Hammer Mill to help flush it out
and it's going to discharge through the three-quarter inch hole into the barrel
foreign
so here's the results from our oyster test and we ran about a cubic meter or a cubic yard in about
10 or 12 minutes to give you an idea of the volume this was a three-quarter inch screen round holes
those are the results from the oyster shells through the jaw Crusher and the hammer Mill and
you saw that actually the jaw Crusher did a pretty decent job getting the stuff crushed down through
and a very nice even distribution of sizes whereas the hammer Mill even with that three-quarter inch
hole had a lot of the stuff was pushed over to that fine range that quarter inch minus eighth
inch minus so I don't know I'm not a shellfish guy I don't know if there's a product for all
different sizes or what but if there's someone out there that has some information on this please
leave us a comment down below so we can all learn from this and figure out kind of what the best use
for these shellfish uh this this oyster shell waste is and I hope you guys enjoyed this video
If you're looking for any of these products you can give us a call or shoot us an email and you
can find that in the description below so thanks again for watching and we'll see on the next video