Best mobile crusher for recycling concrete

CM1995 · 2021-08-29T23:16:27.000Z

Well as the thread is titled what's the best mobile crusher for recycling concrete and other demo debris? I've been kicking around this idea for years including many conversations here on HEF. Looking for info from the ones who've owned, operated and/or wrenched on mobile plants. Here is what I am looking to do: Main function will be targeting crushing demo debris as a waste reduction, LEED, "green" (hate the term but there's money to be made) on job sites both our own and others in addition to having a yard where concrete can be stockpiled to crush when the plant is not on a project. Our company is a DOT certified DWBE so there are opportunities with set aside money on government projects and large private ones as well. Intake product would be concrete with rebar, masonry, rock and brick. Our yard also is our inert dump so disposal of undesirable crushing material can be sorted and disposed of onsite. Equipment we have to support is 2 - 50K hoes one with a QC and hammer, 3 CTL's, backhoe, Gradall RTFL, track loader and 2 dozers. If this venture gets off its feet then a wheel loader is in order. Brands with dealers and support are: Screenmachine/SMI - Cat dealer reps them. Great support for our Cat equipment and we have a relationship with the dealer. Not married though Sandvik - Good local dealer along with a variety of screens and other recycling equipment. I have met one of the owners and he is well known around the city KPI/JCI - smaller dealer that I know nothing about. Kleemann - Komatsu dealer with a large local presence and good product support. Powerscreen - Local branch here from dealer out of KY. Don't know much about them but apparently one of their mechanics lives in my area as I see the 5500 service truck on a regular basis. Next $1M question - jaw or impact? Which one is better for turning concrete into 3 products - fines, 3/4-1" (#57's) and 2"-4" (#24's)? Those 3 sizes are the most desirable for construction here and can be easily re-used on the job site. Which one is more maintenance? Other than both being maintenance intensive which crusher would be better for reducing product primarily and making product secondarily? At this point just noodling the idea out but it's something I've always wanted to get into. Always wanted a landfill since I was a kid but age and wisdom has shown me that is not an obtainable option so this is the next best thing. Thanks in advance!

Started by CM1995Aug 29, 202166 replies

John C.Super UserNov 10, 2021#61
I don't recall anyone around here doing much of any kind of spec through a jaw. Usually it is just a primary and then the stuff for spec is run through a secondary, usually a cone crusher. The jaw is the work horse and takes the beating turning large into small enough to go through something else.
funwithfuelSenior MemberNov 10, 2021#62
John C. said: I don't recall anyone around here doing much of any kind of spec through a jaw. Usually it is just a primary and then the stuff for spec is run through a secondary, usually a cone crusher. The jaw is the work horse and takes the beating turning large into small enough to go through something else. Click to expand... Agreed, 100% , but mobile jaw plants are usually used for recycling and sizing for reuse on highway projects (around me anyway) We used to use HSIs for this application but people were always complaining about dust. The jaw is a little more dust friendly
63 cavemanNew MemberNov 10, 2021#63
The main? The thread " Best mobile crusher for recycling concrete"
funwithfuelSenior MemberNov 10, 2021#64
63 caveman said: The main? The thread " Best mobile crusher for recycling concrete" Click to expand... Soooo... your opinion? McKlusky or Extech. Those are the 2 dogs you got, which are ya betting on? Everyone knows I'm KPI/JCI all the way although I'm warming up to the powerscreen and kleeman lines
63 cavemanNew MemberNov 10, 2021#65
What we do is "recycle" concrete. We feed in 12" minus (thick) and screen 3" (top screen) and 2A bottom screen. The stuff that goes over the 3" screen goes into cone crusher and is screened 1B and 2B and fines are sold cheap (just haven't found good market for them). Run two magnets that discharge into 30 yard containers (for storage and trucking). On commercial jobs it's used for construction entrance and temp. road but geotec guys don't want to touch it. The residential contractors use it all over the site.
63 cavemanNew MemberNov 11, 2021#66
funwithfuel said: Soooo... your opinion? McKlusky or Extech. Those are the 2 dogs you got, which are ya betting on? Everyone knows I'm KPI/JCI all the way although I'm warming up to the powerscreen and kleeman lines Click to expand... IMHO, both are well built but... nether have good field service response time but both have good phone technical support. The key to success for both again IMHO is good operators and maintenance people that pay close attention. When thing go wrong it gets expensive fast. I guess if you held a gun to my head..... the extec will take more abuse.
Bill P. AdamNew MemberNov 16, 2021#67
We use 2 impactors here 2016 powerscreen trackpactor 320 and a 2018 sandvick QI341 impactor and the sandvick impactor in concrete is less expensive in maintenance and by far ! dont forget to take the under feeder pan to protect discharge belt but in asphalt recycling , the powerscreen is a monster . ( the 2 crusher run CAT C9 acert engine stock 350hp but had a ECM horsepower upgrade to 425hp )

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