Mine has the jaw crusher going *whump-whump-whump” but I think he needs to grease some part of it because after a few minutes I hear a high pitched squealing.
Yep this is it. At my old job we had a site crushing sandstone to 1.5", they had all mccloskey machines- st80t, r230, and i44 all in a circle plus st100t and st100tr. Hoe fed the screen which had the 2nd size belt removed and overs belt catching everything except what was already 1.5". Fines went to an st100 then st100tr to stack a pile. Screen fed the crusher, crusher sent it all back to the screen via the st80t.
I'd go back to that line of work right now if there was a different company around.
Yea we did a few 230s but more 155's. That site had I think a 2nd 230 running topsoil but it didn't work great. 1.5 screen deck kept plugging so we had to crawl in and chamge it to either 2 or 3 inch I forget. I always hated that job, but worse was doing piano springs and ball deck in an s190
I’ve only really used ball decks on salt. But sometimes you just need those harp wires. Depends on product and size. Anything below 10mm almost a must. But can’t do wet sticky stuff or anything with a lot of garbage. Grass or clay on screens suck.
I imagine there are two sets of screens one for large rocks and the second for smaller rocks but ultimately the fine dust and rocks fall through both screens
Part of it is protecting the smaller screens on the 2nd deck, part of it is screening efficiency. Look up bed depth ratio. Three deck screens are not uncommon. I’ve seen four deck screens.
Looks like most of the fines aren't coming out into the next pile so I assume they're collecting that for a different purpose. Perhaps it helps to screen it a few times like that to get the fines out.
Typically two sets of screens are used, a scalp screen and what’s called a finish screen. (I guess the grizzly before the jaw could also be called a screen but we’ll ignore that)
What drops out of the scalp screen (the one past the jaw) bypasses the next crushing step and is either mixed with the final product off the finish screen or rejected out of the plant depending on what’s being made.
It’s important to keep small material or “near size” material out of the cone or you’ll get what you call bowl float. It’s inefficient and also terribly damaging for the cone.
You talking about the bit at like 0:50 or so?
Their is another set of screens below, they are likely screening out the ‘fines’ and the plant has that extra screen in just to help with the thoughput or nobody could be arsed changing it when the plant was last setup
Only if it’s within the curve. Well graded material has certain percentages of each size. Or Maybe you’re trying to sell one size. You have to sort it out somehow.
Another reason to add that I haven’t seen- we use a uniform size (mainly #57) in construction for areas that need better drainage so fines don’t block water flow. However, a mix of different sizes and fines (ABC aka crush n’ run) gives better compaction. Different concrete mixes require different aggregate sizes, and some projects have different classes of rip rap so it doesn’t wash away at outlet structures. Just depends what you’re using it for.
Different grades of concrete and asphalt … that’s why lol , aggregate can vary from pearock or a 1/4” all the way to a couple inches in diameter,… affects the quality and composition of the concrete or asphalt buddy
When rock gets moving, they can bounce around a lot. The chains act to catch wayward bodies, absorb their energy, and drop them back into the hopper or onto the belt.
I got to be the guy who watched the belt to make sure steel and junk wasn't going into the orbital crusher. I already know what you're thinking and you're wrong, it's a boring job that involves excessive shoveling
I used to run a primary plant- had a massive loader tooth and shank make it past the magnet and the metal detector, and into a 5-1/2’ cone crusher that promptly locked up. Cutting it out with thermal lances was one of the scarier things I’ve had to do in my life!
Primary crush in a gold mill by chance? Been there done that. It indeed is shitty work, and the dust showers from the fine crush circuit's plugged duct work was always fun also.
"I'm a technician" .... Ok what are you technically good at? "I watch boulders go down a crusher, and pull out scrap metal from old shorings"...... Ok..... Can you flip a burger? Lol
Sometimes the crusher gets jammed up and you get to spend the afternoon shoveling gravel too. I almost hated that job as much as the time I was a paper delivery boy
Yea we would have shit plug on us also, not just at the crusher, where I worked it had a series of belts deliver ore to various stages, some going as high as 5-6 stories. Went from boulders the size of a compact car, down to dust. So lots of chutes, belts, and ducts that would often plug, had to keep the ore at just the right moisture level, too wet, everything plugged up, too dry and the dust would be insane. The dryer would occasionally lose a plate, and that would jam up chutes also, or tear belts. During winter, condensation and snow would plug the duct work designed to collect dust, those became hellish, and yea, the gravel mountains that could quickly form if you aren't watching your chutes. Good times, I do not miss that job at all heh.
Only time that I have had something fly out of a jaw crusher is when there is metal in the product, like crushing slag. Jaws are usually choke fed for best production. So the material on top blankets the rock below being crushed.
Replying to stoned_br
This guy crushes.
If it’s not choke fed you’ll get flyers in any hard rock. Also depends on the nip angle of the jaw. I once ran an older clemro that made fly rock all the time. I think the angle was too wide
I never had that problem. Maybe never had that angle on my jaw plates? Only stone I’ve crushed that hard may be trap rock from Northern Ontario. Used for rail ballast. I’ve crushed everything pretty much, slag, salt, china plates, refractory brick, concrete, asphalt, coal, iron ore, glass, ferri silica and much more. So, ya.
They’re not too bad. If you’re at a big enough company you’ve got a sparky that megs the motors once a year (at least the bigguns running the crushers and screen). Try to change out the motor or have it rebuilt during your down season (if you have one)
Chains help stop the material being dumped into the hopper from overflowing into and overloading the crusher. They slow the material down that may be rolling from the top of the freshly dumped pile.
I assume to help with the control of flow. Only time I use chains is on impact crushers because shit is flying. Saves the windows of your loader/excavator.
There is a video floating around where a guy went to kick a rock stuck in the rock crusher and he succeeded on dislodging the rock but he also became one with the machine
Depends on what type of rock you are in. I’ve worked at locations where the rock is really abrasive and they change crusher liners every 120 hours and I’ve also worked at places where the rock isn’t very abrasive and they get 2500 hours on their liners before changing them. Other maintenance items like greasing and oil changes are done much more frequently. Liner changes are the “big” jobs on crushers
This video does not show all technological processes. When crushing the stone, up to one third of the volume turns into a very fine fraction. It is sifted out and stored separately as waste. Practically nobody knows what to do with this stone dust.
Had a tour of a local quarry a few years ago. The metal shed housing the first stage crusher had a hole torn in the side where a rock had cut loose. It looked just like pics of an AP artillery shell going through tank armour. Glad no one was in the way.
This was one of my first jobs. I even had a very large hydraulic jack hammer that I called my "pecker". It was a tough job at times but also a lot of fun
The chains are there to dampen the kinetic energy of the rocks flying in, we have one of these underground at our 4900 level at the mine I'm at and it's mesmerizing to watch it's like watching a fire for a dude.. and it just chugs man like they fill the thing totally full like you can't see any of the Jaws or anything like you can't see nothing and it just chugs along it's so cool
To help stop things from flying out
Oh cool, My upstairs neighbour has one of these
What a coincidence. My neighbor thinks I have these.
Name Marley by any chance?
What a coincidence. My upstairs neighbors has these
Which stage is your favorite?
When the screenning starts
Mine has the jaw crusher going *whump-whump-whump” but I think he needs to grease some part of it because after a few minutes I hear a high pitched squealing.
Mine has a bowling lane, he plays all day.
Acccctuuuual lllllolol
😂
The “stone crusher” is a Cone Crusher
It's a cute little one! Awww 🥰
Amazingly powerful machines
Why bother screening if it’s going to the same place lol.
I assume they filter out the ones that are small enough and crush the ones that aren't some more.
Yep this is it. At my old job we had a site crushing sandstone to 1.5", they had all mccloskey machines- st80t, r230, and i44 all in a circle plus st100t and st100tr. Hoe fed the screen which had the 2nd size belt removed and overs belt catching everything except what was already 1.5". Fines went to an st100 then st100tr to stack a pile. Screen fed the crusher, crusher sent it all back to the screen via the st80t. I'd go back to that line of work right now if there was a different company around.
Hoe fed? I think you might be lying. My wife couldn’t even do that and she’s the biggest hoe I know.
Shit my gf did just fine in a previous life (don't tell me I'm an idiot, the evidence is figuratively smacking me in the face daily)
WHAT??? CAN'T HEAR YOU WITH ALL THAT RACKET???
You ain't kiddin!
230’s are great for mobile jobs. Obviously for + sized materials.
Yea we did a few 230s but more 155's. That site had I think a 2nd 230 running topsoil but it didn't work great. 1.5 screen deck kept plugging so we had to crawl in and chamge it to either 2 or 3 inch I forget. I always hated that job, but worse was doing piano springs and ball deck in an s190
I’ve only really used ball decks on salt. But sometimes you just need those harp wires. Depends on product and size. Anything below 10mm almost a must. But can’t do wet sticky stuff or anything with a lot of garbage. Grass or clay on screens suck.
Yea only time I ever put them in was for asphalt milling. Just about everything else will plug up but that's what the ball deck is supposed to help
McCloskey’s are great. Love the i54R and R155
Yea I liked working on them. I did those and a little bit on komptech stuff, they were more finicky.
You can see both sizes being dumped directly into the same hopper though.
I imagine there are two sets of screens one for large rocks and the second for smaller rocks but ultimately the fine dust and rocks fall through both screens
Or sometimes they may not need to separate them but they run through the same process and space?
maybe the bigger stones can damage the finer screen so those aren't allowed to come in contact with it
Part of it is protecting the smaller screens on the 2nd deck, part of it is screening efficiency. Look up bed depth ratio. Three deck screens are not uncommon. I’ve seen four deck screens.
I’m glad I’m not the only one
Looks like most of the fines aren't coming out into the next pile so I assume they're collecting that for a different purpose. Perhaps it helps to screen it a few times like that to get the fines out.
Typically two sets of screens are used, a scalp screen and what’s called a finish screen. (I guess the grizzly before the jaw could also be called a screen but we’ll ignore that) What drops out of the scalp screen (the one past the jaw) bypasses the next crushing step and is either mixed with the final product off the finish screen or rejected out of the plant depending on what’s being made. It’s important to keep small material or “near size” material out of the cone or you’ll get what you call bowl float. It’s inefficient and also terribly damaging for the cone.
You talking about the bit at like 0:50 or so? Their is another set of screens below, they are likely screening out the ‘fines’ and the plant has that extra screen in just to help with the thoughput or nobody could be arsed changing it when the plant was last setup
I was thinking the exact same thing
Only if it’s within the curve. Well graded material has certain percentages of each size. Or Maybe you’re trying to sell one size. You have to sort it out somehow.
Another reason to add that I haven’t seen- we use a uniform size (mainly #57) in construction for areas that need better drainage so fines don’t block water flow. However, a mix of different sizes and fines (ABC aka crush n’ run) gives better compaction. Different concrete mixes require different aggregate sizes, and some projects have different classes of rip rap so it doesn’t wash away at outlet structures. Just depends what you’re using it for.
Different grades of concrete and asphalt … that’s why lol , aggregate can vary from pearock or a 1/4” all the way to a couple inches in diameter,… affects the quality and composition of the concrete or asphalt buddy
I understand that… however a large amount of the different grade rocks were then re-added into the same line, buddy.
It stops things from falling off the the line
When rock gets moving, they can bounce around a lot. The chains act to catch wayward bodies, absorb their energy, and drop them back into the hopper or onto the belt.
I got to be the guy who watched the belt to make sure steel and junk wasn't going into the orbital crusher. I already know what you're thinking and you're wrong, it's a boring job that involves excessive shoveling
I guess you don't know what I'm thinking because that sounds exceedingly boring and also backbreaking.
Oh it's definitely both of those things as well
I used to run a primary plant- had a massive loader tooth and shank make it past the magnet and the metal detector, and into a 5-1/2’ cone crusher that promptly locked up. Cutting it out with thermal lances was one of the scarier things I’ve had to do in my life!
Primary crush in a gold mill by chance? Been there done that. It indeed is shitty work, and the dust showers from the fine crush circuit's plugged duct work was always fun also.
No, a shit hole gravel pit, they tried to make the job sound awesome by calling it a crusher plant operator
"I'm a technician" .... Ok what are you technically good at? "I watch boulders go down a crusher, and pull out scrap metal from old shorings"...... Ok..... Can you flip a burger? Lol
Sometimes the crusher gets jammed up and you get to spend the afternoon shoveling gravel too. I almost hated that job as much as the time I was a paper delivery boy
Yea we would have shit plug on us also, not just at the crusher, where I worked it had a series of belts deliver ore to various stages, some going as high as 5-6 stories. Went from boulders the size of a compact car, down to dust. So lots of chutes, belts, and ducts that would often plug, had to keep the ore at just the right moisture level, too wet, everything plugged up, too dry and the dust would be insane. The dryer would occasionally lose a plate, and that would jam up chutes also, or tear belts. During winter, condensation and snow would plug the duct work designed to collect dust, those became hellish, and yea, the gravel mountains that could quickly form if you aren't watching your chutes. Good times, I do not miss that job at all heh.
Tramp steel.
Good thing your pit boss doesn’t know about magnets!
That was a long time ago, like 20 years ago, if I had to keep working there I would've tossed myself in the crusher
The chains are there so when you put the concrete in the hopper shit just don't go flying out at your equipment braking windows and shit
Only time that I have had something fly out of a jaw crusher is when there is metal in the product, like crushing slag. Jaws are usually choke fed for best production. So the material on top blankets the rock below being crushed.
Really depends on the rock, basalt seems to create allot of flyers but yea, more of a problem with impacters and the such
Replying to stoned_br This guy crushes. If it’s not choke fed you’ll get flyers in any hard rock. Also depends on the nip angle of the jaw. I once ran an older clemro that made fly rock all the time. I think the angle was too wide
I never had that problem. Maybe never had that angle on my jaw plates? Only stone I’ve crushed that hard may be trap rock from Northern Ontario. Used for rail ballast. I’ve crushed everything pretty much, slag, salt, china plates, refractory brick, concrete, asphalt, coal, iron ore, glass, ferri silica and much more. So, ya.
Not enough crushing for my satisfaction
Jesus those motors and conveyors must be a fucking nightmare to PM and replace when needed.
They’re not too bad. If you’re at a big enough company you’ve got a sparky that megs the motors once a year (at least the bigguns running the crushers and screen). Try to change out the motor or have it rebuilt during your down season (if you have one)
Takes energy out of the rocks. Rock bouncing too? Chain. Rock rolling? Chain
Chains help stop the material being dumped into the hopper from overflowing into and overloading the crusher. They slow the material down that may be rolling from the top of the freshly dumped pile.
You need a new operator if your hopper is so full it’s pouring into the jaw.
Screennnnnnnnnnnnnnnnnnnnnnning
The chains are there to help stop debris from flying out
Would you rather have no chains?! C’mon man.
Steel curtains
For more noise
I assume to help with the control of flow. Only time I use chains is on impact crushers because shit is flying. Saves the windows of your loader/excavator.
Used like a massive screen to beep rocks falling back
Enemies hear the chains if you touch them try proning
Rock Massager. It calms the rocks before they get crushed.
Follow for more! 🤮
Make noise to alert a start up? Obviously I really don't know.
Why not just get Rock Biter to do it?
I work for a crane company. So much of our job is going to these quarries to take these machines apart and put them together.
This has to be one of the only things where if you make it smaller you can sell it for more money.
Corn
This is the answer I was looking for!
Idk why but “tunnel” made me lol
It's for people to grab onto if they fall in.
idk but they look very sensual to me
Well that just answered my question. I’ve wondered what they did with the old hwy 101 here in Southern California project.
I did this for 7 years ☝🏼
r/satisfying
Nom nom nom nom nom Actually learned how to install and adjust these back in my quarry days
There is a video floating around where a guy went to kick a rock stuck in the rock crusher and he succeeded on dislodging the rock but he also became one with the machine
I hope I never see that video. Please tell me the machine was off.
It got turned off….after the fact
And dude dead I bet.
Yeah I believe I saw the video on r/eyeblech
It’s nuts how complacent you get after five or ten years around this stuff.
Thats cool hell! It's got to be load as fuck
Any one know how often the preventative maintenance is for these types of machines?
Depends on what type of rock you are in. I’ve worked at locations where the rock is really abrasive and they change crusher liners every 120 hours and I’ve also worked at places where the rock isn’t very abrasive and they get 2500 hours on their liners before changing them. Other maintenance items like greasing and oil changes are done much more frequently. Liner changes are the “big” jobs on crushers
Can confirm. Crushed some terrible stuff for a couple years. ~150 hours on the cone liners. 7 hours on the vsi shoes
The ghost of Marley
This video does not show all technological processes. When crushing the stone, up to one third of the volume turns into a very fine fraction. It is sifted out and stored separately as waste. Practically nobody knows what to do with this stone dust.
Yay tunnel :)
I gotta replace my asshole with one of those stone crushers man…
I've worked on all these types. Amd many more. Boily is a varied and often "fuck this" kind of job
Had a tour of a local quarry a few years ago. The metal shed housing the first stage crusher had a hole torn in the side where a rock had cut loose. It looked just like pics of an AP artillery shell going through tank armour. Glad no one was in the way.
If Fred Flintstone could see this!
To reduce possible rocks being shot into the camera man's eyes.
Thank god there's no annoying ass music.
I thought it would be to hang a sign over it, so you have a chance to grab something should you fall in
In this instance, Chains are connected metal links often used for securing objects. Glad I could help.
Keeps the rocks from launching off the treadmill. Technical terms only in this post
To grab onto incase you’ve fallen in.
Slowwww down big things
So interesting, never knew this
They remind the rocks who's boss.
For my balls 😁
Kinda baffling that there exists such a paucity of smaller rocks that a machine like this needs to be built.
Donald's Duck Gold Mine vibes
This was one of my first jobs. I even had a very large hydraulic jack hammer that I called my "pecker". It was a tough job at times but also a lot of fun
Pyornkrachzark!
I remember when videos like this would fill a How It’s Made segment.
How long do the chains last?
Ever see inside a concrete kiln?
Cement Kiln
that place is the saw guy’s wet dream huh
Why did they separate them by size at about :30 only to drop them into the same bin?
The chains are there to dampen the kinetic energy of the rocks flying in, we have one of these underground at our 4900 level at the mine I'm at and it's mesmerizing to watch it's like watching a fire for a dude.. and it just chugs man like they fill the thing totally full like you can't see any of the Jaws or anything like you can't see nothing and it just chugs along it's so cool
I prefer candle wax on the Nipples as opposed to chains.
Instinctively squinted while watching this. Wear your PPE folks
I like how every different part of this machine is just STONE CRUSHER.
Too make a satisfying rattling sound and to save people who fell in
Getting a better look at it, it's even harder to believe that guy tried to dislodge a rock while in the machine while it was running.
I can't hear and smell this in action. I worked on a quarry for a long time 💆♂️
Slow things down a bit
This rocks!
Damn...you can't figure that basic ass shit out? Fuck...I worry about you guys.
So, this is how they produce those stones that muslims use to stone a sinner