I imagine that one of the advantages of this type of machine is that the concrete/rebar is cut into smaller pieces, so the magnet has a much higher likelihood of getting all/most of the rebar, and its easy to manage rather than a tangle of bar.
For those of us who aren't in the business, what becomes of the pulverized concrete and dirt. What is it used for afterwards. The steel part is obviously melted down. Thnx in advance.
that machine is probably powered by a 450-550 hp motor, the average human can put out around 200 watts of energy constantly ( roughtly a 1/4 HP, 745 watts per HP.) that means u need nearly 2,000 people to power this or one person would do the work 2000 times slower. humans do have the potential to do around 2000-2500 watts, but that's maybe for 5-10 seconds. think olympic lifting or deadlifts.
Alessio Sangalli just based off the size of engine bay for that piece of equipment. It’s around the same size of large buses I work on which have 500-550 hp usually.
@@RangieNZ we have to manually pick it all out as it goes past us on the conveyor belt. Just started this job. It only pays $15 an hour. I'm thinking it should be more like 20?
Helluva pile of concrete to work thru. But that's undoubtedly how it goes, you don't bring out the million dollar machine to cut a brick in half. After the recent fires up in Northern California (a year ago) the mountains of broken up concrete are simply massive.
Rebar not getting shredded, the concrete getting broken releasing the rebar that fall out the bottom. Teeth don’t grab the rebar ended to end to break it
And it crushing cement. Once you break concrete it’s very weakly can break it with a hammer. Cement has tensile strength that it’s suport even pressure weight. But weak in it beating long and you break it across the grain
This is happening right now on I-440 in Nashville. We were all wondering who was going to pick out the bar after the smashy thingy pulverized the old concrete interstate.
That belt that is perpendicular to the conveyor throws the rebar on the dirt on the right. You can see it kick a piece out at 3:32 I suspect they have another magnet mounted on an excavator that comes by to collect the pile.
@@grayswandir47 We have to manually pick all the rebar out by hand at this job I just started. It only pays $15 an hour, but I think it should be more like $20?
@@93maverick They range in all kinds of prices based on size, horse power, and what they will mainly be crushing but for this in the video you're probably looking at something around 30,000 -50,000 new
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yes most of the magnetic steel get sorted out, notice at the last part of the video, the rubber conveyor belt run over a strong electro magnet that pick up steel bits and trow them out on the side of the maskine...
@@samkom33 we have to manually pick all of the rebar out by hand at this new job I just started. It only pays $15 an hour but I'm thinking it should be about $20?
@@phxcppdvlazi He is correct. A horizontal shaft impact crusher would be much more efficient at crushing this material. There is one in the background of this video. It looks like a metso Lt1213s. Far more tons per hour and less wear costs.
Brian Ellis have you ever put large quantities of rebar through a conventional crusher it's a right ole mess I think if he loaded it a bit faster the weight of the shit in the hopper would push gear into the jaws
@@adjustablehammer3749 It can be a mess putting a lot of steel into the crusher. It all depends how it is prepped to begin with. Impacter wear bars are about 4 inches thick. it takes a big piece of steel to bother them. then you just need clearance under the crusher for the steel to change direction and go up the discharge belt and a good magnet. Using a shredder as in this video is cost prohibitive as the anvils wear fast in this type of material.
Brian Ellis the problem I find with it is it gets a few bits in a cobweb formation in the jaws and it stops the rubble falling into the conveyor but I haven't done much crushing so it was probably part operator fault aswell
