Efficient aggregate production technology

Efficient aggregate production technology is now coming to market, offering lower cost/tonne production
Materials / July 13, 2020 3 mins Read
Kleeman’s MOBICAT MC 120 Zi PRO jaw crusher
Kleeman’s MOBICAT MC 120 Zi PRO jaw crusher

The latest aggregate production technology offers high-quality output combined with more efficient operation. Users can reduce the cost/tonne of material, while also helping to optimise quality with the latest crushing and screening advances.

Mobile crushing and screening company Keestrack has launched three new models onto the North American market, including its heavy 56tonne H6e cone crusher.

The full hybrid diesel/electric drive H6e can be used for secondary and tertiary crushing. With a maximum feed size of 215 mm, variable crushing chamber configurations and stroke settings, the specially adapted cone Keestrack KT-H6 is based on Sandvik technology and processes up to 440tonnes per hour (tph) of raw materials.

The powerful e-motors for the crusher drive and all other directly electric-driven components are powered by the detachable power unit, including onboard diesel and generator or plug-in via mains, or an external generator.

Keestrack’s versatile H6e can be used for secondary and tertiary crushing
Keestrack’s versatile H6e can be used for secondary and tertiary crushing

An optional three-deck, post-screen module with oversize recirculation is designed to provide high-quality end products and high added value. Weighing only 68tonnes with all options (56tonnes without three-deck screen), Keestrack says the large cone can be operated economically at various jobsites.

Monitored by an ultrasonic sensor, the stacker swivels automatically to create radial stockpiles up to 2,900tonnes, which is designed to minimise loader traffic, labour and fuel costs and optimise onsite safety. The S1e can be relocated via fork-lift, and can also be supplied by plug-out connections of other brands, mains or gen-sets.

The 30tonne R3 is available as diesel-hydraulic or a hybrid ‘e’version, and combines compact transport dimensions and low weight with high production rates up to 250tonnes/hour.

Kleemann is introducing four products; three crushers and a screener. The MC 120 Zi PRO jaw crusher is made for challenging natural rock quarrying operations. The plant has an output of up to 650tonnes/hour, features a powerful jaw crusher with a feed opening of 1.2m x 81cm, and is equipped with an extra-long articulated crusher jaw.

To ensure the best possible material flow, the continuous feed system (CFS) adapts the conveying speed to the fill level of the crusher.

Should material bridging occur in the jaw crusher, the crusher can be reversed with the aid of the electric crusher drive to swiftly clear the blockage. The machines of the PRO line can be operated with the simple SPECTIVE control system via a touch panel, and all components and functions can be controlled from the ground.

The mobile MOBICONE MCO 11i PRO cone crusher is a secondary crushing system with a maximum output of 470tonnes/hour. Also part of the PRO line, the crusher is designed for permanent quarrying operation.

The MOBIREX MR 130 Zi EVO2 impact crusher is designed so that it can be transported easily and rapidly made ready for operation. The direct diesel drive is said to ensure high output while minimising fuel consumption. The plant features the SPECTIVE control concept and has an output of up to 450tonnes/hour.

McCloskey’s new C3 cone crusher is the first of the company’s new C-Series crusher plant range
McCloskey’s new C3 cone crusher is the first of the company’s new C-Series crusher plant range 

Kleemann says the MOBISCREEN MS 952i EVO classifying screen is a support unit for all three crushing systems and is suited for crushing plant contractors in both recycling and quarrying. The MS 952i EVO has a screening surface of 1.55m x 6m and has an output of up to 500tonnes/hour.

The first of McCloskey International’s new C-Series cone crushers has now been unveiled. McKloskey claims the C3 unit and other forthcoming third-generation C-Series mobile cone crushers deliver superior performance, while also achieving higher capacity, better product quality, optimum versatility and improved fuel efficiency.

The C3 cone crusher has a new open chassis, an MC300 cone, a 1050mm feed opening and a 328-380kW Volvo Penta or Caterpillar power unit.

It offers a fast set-up time, high material capacity and a high degree of control over the final product, and throughput, says the firm. It also has a large stockpile capacity, as well as claimed excellent servicing access, making the C3 an ideal portable secondary crusher that “pushes the boundaries of industry performance”, McKloskey claims.

The unit also has a new conveyor design, with recirculating screen options, as well as continuous load and material level monitoring offered as standard features with the new C-Series product line.

Metso is extending its NW Rapid series of transportable wheel-mounted crushing plant with a range developed specially to accommodate road transport in North America.

The first models of the range are the NW120 Rapid portable jaw crushing unit and NW1213 Rapid portable impact crushing unit, which have been redesigned to permit their transport in most North American states.

NW Rapid can be moved from one site to another using standard prime movers. Besides portability, other advantages of the NW Rapid models include quick set-up and a best-in-class production capacity of up to 500tonnes/hour. NW Rapid has been designed so that the units can be set up in about an hour. The solution consists of modules that can be used to create a variety of combinations in fixed installations as needed.

Sandvik’s new modular screen is versatile as it can be reconfigured for different products
Sandvik’s new modular screen is versatile as it can be reconfigured for different products

Rubble Master is now offering its entry-level crusher, the RM 70GO! 2.0, with an integrated mesh screen and refeeding belt, an addition which up until now has only been available with larger units.

This addition means the compact machine can accomplish crushing and screening in a single pass and makes the mobile crusher more efficient. The final aggregate is screened to the required final size in a single pass, with a throughput capacity of up to 120tonnes/hour.

The mesh screen and refeeding belt are transported with the crusher, and don’t change the dimensions for transporting. At a transport width of 2.2m, the crusher does not need any accompanying vehicles or special permits. The RM MS 70GO! screen requires no auxiliary equipment such as cranes or diggers to install it onto the crusher.

Sandvik Mining & Rock Technology, Mobile Crushers and Screens, has introduced its new ‘modular’ hanging screen for its latest range of mobile 2 Series crushers.

Sandvik’s new double-deck modular hanging screen enables customers to produce two screened products and recirculate any oversize material back into the crusher. Some of the benefits of this new modular hanging screen include its ability to be adapted quickly for operation in open or closed-circuit configurations.

It features a patent-pending adjustment system that enables the screen to be quickly reconfigured to produce one single-sized finished product, or two-sized finished products, depending upon the customer’s demands at that time. The screen can be hydraulically repositioned to create a single deck hanging screen using the top deck as a breaker deck without the need to remove the screen mesh.

The oversize conveyor may be hydraulically rotated 90° for material stockpiling of up to three products on the ground, or 180° for removal. The tail section can be raised hydraulically to give improved ground clearance for transport when loading or unloading.

Sandvik says the complete modular hanging screen can be installed or removed from the plant in less than 30 minutes without the need for any lifting equipment onsite. The hanging screen option delivers multifunctionality as a 1, 2 or 3-way split screener offering unrivalled flexibility to customers.  

The new Cedarapids crushing and screening plant is designed to maximise production
The new Cedarapids crushing and screening plant is designed to maximise production

Terex MPS has launched its latest crushing and screening solution, the Cedarapids CRH1113R closed circuit impactor crusher/screen plant. The CRH1113R portable plant – launched under Terex’s Cedarapids brand – features a brand new crusher, screen, and feeder that are designed to maximise the production of the machine.

Designed as a one-piece tow, the portable crushing and screening solution is designed to be easy to transport on highway or to move onsite. Hydraulics on the screen and return conveyor are intended to give quick, easy, and safe set-up.

The machine is self-contained with onboard diesel power and generator. The 335kW variable speed Scania diesel engine direct drives both the crusher and 150kW generator with a hydraulic clutch. The rest of the plant is electrically powered and designed for maximum efficiency and minimal maintenance.

The plant features a TI4250 crusher which has hydraulically controlled curtains to make adjustments and maintenance safe and quick. The variable speed diesel allows optimum rotor speed to best match the application and desired product. The 15.24cm x 40.64cm two-deck screen dual slope design features a steeper top deck to handle heavy loads and quickly stratify material.  The lower deck has less slope to increase retention time for maximum screening efficiency. The entire screen can be positioned with more or less slope to optimise production. The new vibrating grizzly feeder is 121.92cm x 45.72cm to handle feed from large loaders.