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Concrete Recycling Machines: Technical Analysis, Selection Criteria and Brand Comparison

RESUMEN

Aprende sobre el carbón vegetal y el carbón mineral, incluyendo sus tipos, usos, métodos de extracción y producción, y las principales diferencias entre estos materiales ricos en carbono.

SF-380D-2S Máquina móvil integrada de trituración y cribado

A concrete recycling machine reduces hardened demolition concrete into material that can be screened and assessed for reuse. In practice, this usually involves more than one crushing action. A workable process may include pre-sorting, controlled feeding, crushing, magnetic separation, screening, oversize recirculation and final quality checks.

This article focuses on machines for ​hardened concrete from demolition, roadwork and reconstruction projects. It does not cover wet concrete reclaimers used at ready-mix plants. Those systems wash returned fresh concrete and recover sand, gravel and process water. The equipment and operating principles are different.

The distinction matters. A mobile crusher may reduce concrete successfully, but that does not automatically make its discharge a finished recycled aggregate. Steel must be removed. Contamination must be controlled. The material must also be screened to the required gradation and tested for its intended use.

What Is a Concrete Recycling Machine?

The term can describe either a single integrated machine or a complete processing line.

A standalone concrete crusher mainly reduces material size. A more complete concrete recycling machine may combine:

  • a feed hopper and vibrating feeder;
  • a prescreen or grizzly;
  • a jaw crusher or horizontal-shaft impact crusher;
  • an overband magnet;
  • one or more screening decks;
  • a return conveyor for oversize material;
  • product conveyors;
  • dust suppression; and
  • a tracked or wheeled chassis.

Some mobile plants combine most of these functions on one chassis. Other projects use a primary crusher, a separate screen and several conveyors. Neither arrangement is automatically better. The correct layout depends on feed conditions, required output and how often the plant must move.

The term also has a second meaning in the concrete industry. A batching-plant concrete reclaimer processes returned wet concrete and wash water. For example, MEKA describes its concrete recycling system as equipment for recovering aggregate and cement-bearing water from unused concrete. A demolition crusher cannot perform that function.

Jaw Crusher or Impact Crusher for Concrete Recycling?

Both types are used, but they solve different problems.

Selection factor Mobile jaw crusher Mobile impact crusher
Main crushing action Compression High-speed impact
Typical role Primary reduction Primary or secondary reduction; closed-circuit production
Large, irregular feed Often suitable Depends strongly on inlet geometry and presizing
Forma del producto Usually more elongated or angular Often more cubical, depending on feed and settings
Fine generation Usually lower Can be higher
Main wear parts Placas de mandíbula Barras de impacto y placas de impacto
Reinforced concrete Requires steel management and magnetic separation Requires careful steel control and protection from uncrushables
Integrated screen options Available on some models Common on recycling-oriented models

A jaw crusher is a practical starting point when feed pieces are large, variable or difficult to orient. For example, the SUHMAN SE-1060 mobile jaw crusher has a published maximum feed size of 700 mm and a processing range of 200–250 t/h. It also lists an overband separator. For a graded final product, it normally needs a downstream screen and may require a secondary crusher.

An impact crusher is often selected when the project needs stronger size reduction, better particle shaping, or an onboard screening and return circuit. It is not automatically the lower-cost option. Blow-bar wear can rise with hard or abrasive aggregate, and uncontrolled steel can cause expensive interruptions.

The practical choice is based on the whole feed, not only on concrete compressive strength. The original aggregate inside the concrete, the amount of attached mortar, steel content, and target gradation all matter.

What the Current Mobile Recycling Market Shows

Current product ranges from international manufacturers show several clear equipment trends. These are design observations, not a market-share ranking.

Closed-circuit crushing is now a mainstream configuration

Metso, Kleemann, RUBBLE MASTER, Keestrack, Finlay and other suppliers offer mobile impact crushers with onboard screens and return conveyors. The purpose is straightforward: control top size without setting up a separate screening plant.

This arrangement is useful on temporary sites. It also has limits. Onboard screens have less area than many standalone screening plants. Producing several tightly controlled fractions can reduce throughput or require a separate screen.

Separation is moving beyond a basic magnet

An overband magnet is common in concrete recycling. Some manufacturers also offer wind sifters to remove light contamination such as wood and plastic. Metso lists magnet, wind sifter, and water-suppression options for the LT1213S. Kleemann offers magnet and wind-sifter configurations for the MR 110 EVO2.

These options improve the process, but they do not replace source sorting. A machine cannot reliably convert heavily mixed demolition waste into clean aggregate through crushing alone.

Electric and hybrid options are becoming more visible

Keestrack offers the R5 with diesel-electric, plug-in and full-electric variants. RUBBLE MASTER describes the RM 120X as diesel-electric. SUHMAN lists external-electric and diesel-generator choices for its integrated impact plants.

The best power arrangement depends on local electricity availability, fuel cost, emission rules and working hours. An electric drive is not automatically more economical when the site lacks a stable supply.

Controls and operating data are receiving more attention

Modern plants increasingly use automatic feed regulation, remote controls, fault diagnostics and telematics. These systems can help the operator maintain a stable load and identify downtime. They do not remove the need for trained inspection, correct wear-part selection and preventive maintenance.

Representative Mobile Impact Crusher Comparison

The following models represent the same broad market category: track-mounted horizontal-shaft impact crushers available with onboard screening or recirculation. They are not identical. Published capacities use different test materials and configurations, so the table should not be read as a performance ranking.

Brand and model Published capacity Crusher inlet Onboard screening and return Published operating or configured weight Technical observation
SUHMAN SF-380D-2S 150–240 t/h 1,380 × 1,000 mm Three-layer 4,600 × 1,540 mm screen, return conveyor and iron separator 54,3 t Emphasizes multiple finished sizes in one integrated chassis
Kleemann MR 110 EVO2 Approx. 240 t/h for demolished concrete 1,100 × 800 mm Optional single- or double-deck post-screen and return conveyor 44.5 t basic; approx. 61 t maximum configuration Manufacturer publishes a material-specific concrete capacity, which is more useful than its 350 t/h feeder rating
RUBBLE MASTER RM 120X Up to 350 t/h 1,160 × 820 mm 1,480 × 3,708 mm screen attachment and return system 45.6 t with screen attachment Lighter configured weight; diesel-electric drive and detachable screen
Keestrack R5 Up to 350 t/h on the product overview 800 × 1,050 mm Optional double-deck afterscreen with closed-circuit return 55.8 t with double-deck afterscreen Large afterscreen area; diesel-electric, plug-in and full-electric versions available
Metso Lokotrack LT1213S Not stated on the current product page 1,320 × 900 mm Onboard dual-slope screen and return conveyor 55 t Recycling options include a magnet, windsifter and high-pressure water suppression
Finlay I-120RS Up to 400 t/h output potential 1,130 × 800 mm Two-deck 3,660 × 1,530 mm screen and recirculating conveyor 53.5 t including options Higher published output class; detachable recirculation system and telematics

Sources: SUHMAN SF-380D-2SKleemann MR 110 EVO2RUBBLE MASTER RM 120XKeestrack R5Metso Lokotrack LT1213S y Finlay I-120RS.

The table reveals why simple TPH comparisons are weak. Kleemann lists a 350 t/h feeder capacity but gives approximately 240 t/h for demolished concrete. Finlay publishes an output potential of up to 400 t/h. RUBBLE MASTER uses an “up to” figure. Metso does not show a throughput number on its current product page. Each figure answers a different question.

For procurement, the useful comparison is a test or calculation based on the buyer’s material. It should include feed grading, concrete and aggregate hardness, steel content, moisture, target screen apertures and expected return load.

Where the SUHMAN SF-380D-2S Fits

Within the current SUHMAN range, the SF-380D-2S mobile integrated crushing and screening machine is the closest match to the search term “mobile concrete recycling machine.” It combines feeding, impact crushing, magnetic separation, multi-deck screening and oversize return on one tracked chassis.

Its published specifications include:

  • 150–240 t/h machine processing capacity;
  • 600 mm maximum feed size;
  • 1,380 × 1,000 mm crusher inlet;
  • 250 kW crusher power;
  • 4,600 × 1,540 mm three-layer screen;
  • iron separator;
  • return conveyor;
  • 54.3 t machine weight; and
  • external-electric or diesel-generator power arrangements.

This configuration is relevant where a contractor wants several aggregate sizes without installing a separate primary screen. It may suit urban recycling, road reconstruction and temporary processing yards when the feed has already been sorted and presized.

It is not the answer to every concrete project. A separate plant may be more practical when:

  • the feed contains large and irregular concrete pieces;
  • a jaw crusher is needed for primary reduction;
  • the project requires more screening area;
  • several precise commercial fractions must be produced continuously;
  • light contamination requires additional separation; or
  • the plant must handle major changes in feed composition.

For higher-throughput work, SUHMAN also offers the SF-580D-S integrated impact crushing and screening plant. Another option is a separate SF-580D impact crusher and SS-7018 mobile screen. A published 230 t/h C&D recycling project in Thailand uses that two-machine arrangement for concrete, brick, and mixed demolition material.

The project title describes the configured project capacity. It should not be treated as a guaranteed output for another site. Actual throughput must be recalculated for the new feed and product requirements.

What Determines Actual Concrete-Recycling Capacity?

The sustainable output of a plant is controlled by its slowest active stage. This may be the feeder, crusher, magnet, screen, return conveyor or product conveyor.

Several variables can move actual output far away from a catalogue figure.

Feed-size distribution

A plant receiving a balanced mix of sizes behaves differently from one receiving mostly slabs near the maximum feed limit. Large pieces can slow loading and increase bridging. Excessive fines can overload the screen without using much crusher power.

Concrete and aggregate properties

Concrete strength alone does not define crushability. Concrete made with hard, abrasive natural aggregate can wear blow bars faster than concrete made with softer aggregate. Old mortar content also influences breakage and fines generation.

Reinforcement

Light mesh and short rebar pieces are different from long, heavy reinforcement. Steel can wrap around shafts, collect at transfer points or damage belts. Time spent clearing steel reduces effective production.

Moisture and contamination

Wet fines can blind screen apertures. Clay and gypsum can reduce product quality. Wood and plastic may travel into finished stockpiles unless removed by sorting or air separation.

Required top size

A small screen aperture usually increases the amount of oversize returned to the crusher. The closed circuit then processes some material more than once. Crusher throughput may remain high while net finished-product output falls.

Availability and operating practice

Daily output must allow for inspections, refuelling, screen cleaning, wear-part adjustment and unplanned stoppages. A realistic production estimate should use expected operating hours and availability, not simply multiply maximum TPH by the length of a shift.

Can Recycled Concrete Aggregate Be Used in New Concrete?

Sometimes, but not automatically.

Recycled concrete aggregate is commonly considered for granular base, subbase, backfill, drainage layers, temporary roads and other unbound applications. FHWA guidance states that reclaimed concrete material must be crushed and screened to the required gradation for granular base use. It also discusses its use in several bound applications, subject to processing and engineering requirements. See the FHWA granular-base guidance.

Use in new structural concrete requires closer control. The source concrete, attached mortar, absorption, density, grading, chlorides, deleterious materials and local specification all matter. Laboratory testing and mix design are normally required.

A crusher manufacturer should therefore avoid promising that every output is “ready for new concrete.” A more accurate statement is:

The plant produces crushed and screened recycled concrete aggregate. Its permitted end use depends on material quality, testing and the applicable project specification.

That distinction protects both the equipment supplier and the buyer.

Mobile or Stationary Concrete Recycling Plant?

Factor Mobile plant Stationary plant
Relocation Designed to move between or within sites Normally remains in one location
Instalación Usually faster and requires less permanent infrastructure Requires a planned foundation and material-flow layout
Screening area Limited by transport and chassis dimensions Easier to install large, separate screens
Expansion Possible, but constrained by mobile modules Easier to add stages and separation equipment
Typical use Demolition contracts, roadwork and temporary yards Long-term recycling centres and high-volume fixed operations
Product flexibility Good with integrated screen; separate screen may still be needed High when several crushers, screens and stockpiles are installed

Mobility reduces the need to haul raw concrete away from some projects. It does not eliminate transport. The machine, excavator, loader, stackers and finished products still need a logistics plan.

Information Needed Before Selecting a Machine

A useful equipment recommendation starts with project data. Buyers should provide:

  1. Source and type of concrete.
  2. Maximum piece dimensions, not just estimated diameter.
  3. Typical feed-size distribution.
  4. Concrete strength, if known.
  5. Original aggregate type and abrasiveness, if known.
  6. Type, amount and exposed length of reinforcement.
  7. Brick, asphalt, soil, gypsum, wood and plastic content.
  8. Moisture condition.
  9. Required net finished-product capacity.
  10. Required product sizes and tolerances.
  11. Intended use of each product.
  12. Working-space and ground conditions.
  13. Required relocation frequency.
  14. Available electrical supply and fuel conditions.
  15. Local transport, noise, dust and engine-emission requirements.

Photos and videos are helpful. A representative material test is better. For larger projects, a flow sheet and mass-balance estimate should be prepared before the equipment order is finalized.

Dust, Safety and Maintenance

Concrete crushing can generate respirable crystalline silica. The US Occupational Safety and Health Administration states that crushing concrete, brick, block and mortar can create respirable silica. Its construction standard calls for crushing machines to use water spray or mist at the crusher and other dust-generation points, with the equipment operated and maintained to minimize emissions. Requirements differ by country, so the local rules must also be checked. See OSHA’s crystalline silica overview y 29 CFR 1926.1153.

Water suppression should be designed around the process. Too little water may not control dust. Too much can create screen blinding, slurry and poor material flow.

Maintenance priorities include:

  • inspecting blow bars or jaw plates for wear and uneven profiles;
  • checking impact-plate settings or jaw discharge settings;
  • cleaning and testing the magnetic separator;
  • inspecting belts for cuts caused by steel;
  • removing trapped reinforcement from transfer areas;
  • checking screen media tension and damage;
  • monitoring bearing temperature and lubrication;
  • checking dust-suppression nozzles; and
  • recording wear cost per processed tonne.

Wear-part life should not be promised as a fixed number of hours. It depends on feed abrasiveness, reinforcement, crusher settings, recirculating load and operator practice.

Common Selection Mistakes

Choosing by maximum TPH alone

Maximum capacity may refer to the feeder, crusher or ideal test material. Ask for a concrete-specific estimate and the assumptions behind it.

Ignoring screen capacity

The crusher may process the feed, but the screen can still limit net production when small finished sizes are required.

Treating the discharge setting as the product size

Crusher setting influences product grading. It does not guarantee that every particle will be smaller than the setting. Screening provides final size separation.

Underestimating reinforcement

An overband magnet is necessary for many projects, but long steel should still be removed or cut before it can obstruct the plant.

Assuming all demolition material is clean concrete

Mixed C&D waste requires more sorting and may need air separation or manual picking. The more contaminated the feed, the harder it is to produce a consistent aggregate.

Buying an integrated plant when a separate screen is needed

An all-in-one machine saves setup space. A separate screen can offer more screening area, more stockpile flexibility and easier adjustment for multiple products.

Frequently Asked Questions

What is the best concrete recycling machine?

There is no universal best model. An integrated impact crusher with screening is practical for sorted, presized concrete and controlled finished sizes. Large or irregular feed may require a jaw crusher first. High-volume recycling yards may benefit from separate crushing and screening machines.

Can an impact crusher process reinforced concrete?

It can process suitably prepared reinforced concrete, but reinforcement must be controlled. Long steel should be removed or cut before feeding. A magnetic separator should remove liberated ferrous material after crushing.

What finished sizes can a concrete recycling machine produce?

The available sizes depend on crusher settings, screen media, number of decks and conveyor layout. Product sizes should be chosen according to the intended application and local specification.

Does a larger crusher inlet guarantee higher capacity?

No. Inlet size affects feed acceptance, but capacity also depends on feeder performance, crusher power, material properties, screen area, return load and operating availability.

Is a concrete recycling machine the same as a concrete reclaimer?

Not always. In demolition recycling, the term usually refers to crushing and screening hardened concrete. At a ready-mix plant, a concrete reclaimer processes returned wet concrete and wash water.

Can recycled concrete aggregate replace natural aggregate?

It can replace natural material in some applications when it meets the relevant specification. The acceptable use and replacement level depend on testing, local standards and project design.

Conclusión

A concrete recycling machine is best understood as a material-processing system, not only as a crusher. Effective recycling requires controlled feed preparation, steel removal, size classification and product testing.

The current market offers compact impact crushers, mid-sized closed-circuit plants and larger multi-machine systems. Their catalogue capacities are not directly comparable. The most reliable selection method is to match the complete configuration to the actual concrete, reinforcement, target gradation and site conditions.

Within the SUHMAN range, the SF-380D-2S is the closest fit for projects seeking integrated impact crushing, magnetic separation and multi-size screening on one mobile chassis. Larger or more variable projects may need the SF-580D-S, a separate SF-580D and SS-7018 line, or an SE-1060 jaw crusher as the primary stage.

To evaluate a project, provide the feed dimensions, reinforcement condition, required net capacity and target aggregate sizes. Those four points are more useful than asking for the machine with the highest catalogue TPH.

Technical Source Notes

Product specifications and configurations were checked against manufacturer pages available in September 2026. Equipment specifications can change by region, engine standard and optional configuration. Confirm the current technical sheet before procurement.

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