i like pegson premairtrack 26x44 nice strong machine,and keestrack screening equipment,cannot kill the novum model
i like pegson premairtrack 26x44 nice strong machine,and keestrack screening equipment,cannot kill the novum model
ont he subject of crushing,I find it useful that you need to have a good rappaport with the crusher operator! the operators main duty is to produce and keep the machine running,This could be quite stressfull,because of the stone size,fines content,every one wants to close down the jaw and make baby-powder! the jaw i work with id deseigned to take onley 10% fines my people whant to make 5o% or better!!!!! the other factor is whoever is loading cant wait for the materiael to go down the grizzly,the loader operater complaines the pile under the belt is to high??? and when the unit stalls the boss wants to know how long its going to be before its up and running again!!! oh, and dont forget to call the fuel man!! and you better have it up and running after coffee break......
i worked for a large portable crushing company. we used lippmann duo-king portable crushing plants with jaw primary and roll secondary for road gravel, 22a 23a 22a. mod. depending on how wet the clay was 500tph was nothing for these plants to handle. the company operated 3 of this type. when crushing and sizing other materials such as 1" 1/2 minus, 20aa, crusher dust, r34, ect. we tried to stay with cone crushers. we believed we got a better fractonated crush with a cone than with other plants. svedala, metso minerals, allis mineral systems are a few of the brands we worked with. this company often runs op to 10 different materials at the sametime. so buying many different types of crushers and screeners allows us to taylor a plant to process the material to the costumers needs. everything they own is road portable.
The Komatsu crushers are quickly gaining popularity here in southern california. We have a few BR380s like this one but seem to sell more of the larger BR580. The remote features are pretty cool, the operator can control the crushers movement and operation without leaving the cab of his excavator. We have had very few problems out of them, the only kind of annoying part from a mechanics standpoint are the safety switches, there are over 20 of them and if it wont start you get to walk around and find which one is tripped, but they are there for a reason and they do their job well.Originally Posted by oakland
Our setup.
Terex finlay 1175 Jaw 30x42
Metso Nordberg hp300 cone
Metso Nordberg 620 tripple deck screen.
Worked this setup all summer. Some pro's, Some con's with each piece of gear. Worked them from March till mid Nov. so learned quite a bit about this particular setup, but always willing to learn more. So if anyone has been around any of these 3, please chime in with pros and cons. I have a long list, but will not discuss them at this time unless someone is interested.
We have 2 terex/ findlay 683 supertracks and they have proven to be great for our application. We use them to screen out rock and size coal that is too poor of quality to run
through our wash plant. Brent if you make it over to eastern ohio get with Jim Harris in Cadiz and he can bring you out and see them in action if you like.
nice driveway
Ryan K.
I too have run a terex/pegson recycle jawcrusher crushing slag with a terex/powerscreen screener behind it.
The crusher didn't have the auto feeder program in the plc ( the later-ones did I believe) so I really needed a crusher operator too for keeping the jaw full.
Problems i had when the jaw opened up for some unbreakable chunk and it was big . it wouldn't fit between the discharge conveyor and the hydro tank.
I also found out that for slag (which is pretty heavy) if the jaw opened up with the jaw full the discharge conveyor lacked power and would not pull it out.
We went to a demo for a terex/finlay screener with a steel feeder conveyor and found the unit quite impressive .
It had steel rollers (the powerscreen has plastic) and seemed pretty rugged build.
What I dislike on the screeners is the lack of conveyor slip guarding.. I mean just put in a little plc and secure the operation.
Has anyone had any experience with the Rockster range of crushers , from their website they look like a great single operation with double fines screening and return belt for oversize , but it would be great to hear from someone who,s worked with one
I had some contact with Herr Norbert Feichtinger at a European Expo a couple of years ago and I think he was a senior engineer with the Rockster company. Certainly he was an impressive guy with a huge knowledge of the challenges operators routinely faced. I watched the demos, asked him questions and I noticed he answered all of them accurately and from a knowledgeable background rather than the product brochure. He knew his stuff, which is very unusual among guys out there to meet people and sell machines. The machines struck me as being very professionally built with a long term ownership expectation. There are other very good crushers of course, but Rockster is right up there. I would own one. cheers, Gordon
I'll definately agree with you on the build of the machines very impressive and well thought out , I guess it all comes down to the final application of the crusher and if it's suitable for the task . I,m researching as much as possible the best machine to process building rubble and reinforced concrete , most guys that i talk to swear by a jaw crusher because of it's capabilities of handling a reasonable amount of reinforcing mesh through the machine but but the downside is the requirement of secondry crushing and screening especially if you require 1" minus final product .The Impact crusher namely the Rockster claims that it can crush and screen down to 1" minus in one pass , but i believe the pre preparation,removing most if not all the reinforcing
would slow the whole process greatly . Then last but not least is having a portable self contained crusher in a reasonable weight range that won't require a freight train to cart it about .I'm going to quit on that note ( giving myself a headache thinking through all this stuff )Cheers Shayne
Almost all demo recyclers lose most of their profitability in the pretreatment process. Usually I find by the time they have the feedstock down to a size and shape suitable for crushing, its small enough already and hardly needs crushing! The key to making money from this must be in the least pretreatment possible, which all but rules out a jaw. The need for the concrete to turn almost 90 degrees to fall into a jaw from the feeder is a problem that is redoubled when the rebar has to also turn on the way out without ripping the belt.
I used to run two Nordberg City Crushers, model C10/07 Horizontal shaft impactors. They were able to accept comparatively long lengths of rebar with no issues. The feedstock needed minimal preparation and as long as the slabs were less than 700mm (28") wide they could be up to 40-50" long with rebar or mesh inside. These models discharged onto a steel vibrating feeder which caught and turned the steel before it reached the discharge conveyor. Wear was an issue, we could use special hammers we had made which would do 50,000 tonnes but had to be careful of any "hard" tramp iron getting in there or we thought the hammers would break. We never broke any so maybe it wasn't a problem.
Initially we used the Metso stock hammers and they were doing about 10,000 tonnes. Dust was our biggest problem, of course we could spray but that causes problems of its own.
My first choice for demo though would be one of the Japanese roll crushers. We've had three of these, two kobelco KMC300R and one Hitachi HR1000 and they are very hard to beat for every reason. No dust, quiet, fuel efficient, endless production, huge feed slabs accepted up to 2m (80") square can be eaten without pretreatment whether full of mesh or rebar. The smaller HR1000 (20 tonnes) can deal with a 2.1m (7') long piece of mangled rebar no problem whatsoever and the Kobelcos even longer. There is a 48" drop from the crusher outlet to the top of the conveyor belt is the reason. The Kobelcos roll along at an easy 90-100tph and the Hitachis 60-70tph at 1 1/2" product size. Feed that through a screener set in closed circuit at 1" and you'd have exaclty what you wanted and not too many "fines"
I have one of the kobelcos available in Western Australia right now as a matter of fact. Gordon
Which is better to use on the interior here? Also, What size wire mesh would you actually use inside ( http://www.bwire.com/resources.html use this measuring model if you don't know wire mesh). Is this really fine mesh that is being used or is it something a little more open like 3 x 3 or 4 x 4 wire cloth material?
Thanks for the info guys.
McClosky is the best, metso a close second, and anything is better than terex powerscrap, bad expiriences with 2 1800's a 2100 and their sad excuse for a cone
Appreciate that.
sorry man, nothing personal, just we sent back the cone at 2200h, and the screening plants like to throw counterweights around (they have a revised model w/o the offset), we had to re-engineer the hopper flashings, the list goes on, we run 24/7 and they cant take the abuse in the north (-40c) McCloskeys are built better, and you can manually operate just about everything
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