Mobile Crushers and Screens

Published 19/4 at 09:59

New developments in mobile crushers and screens include several new products, some of which will be released at this year’s Ifat. In this feature, there are also some case stories where crushing and screening has played a key part in getting the job done.

New additions to Backers ‘Starscreen’

Backers has announced the latest innovations to its three-way split Starscreen, which can now produce hydraulically bound base layers and fluidised soil with a high throughput. For the production of the base layers, a coarse screen with a 30mm screen is used and the mixture is moistened accordingly. When producing hydraulically bound base layers or stabilised soil, Backers says a capacity of up to 300t/h is possible. The screening and mixing machine can use a compressor to generate compressed air which is used to transport the binder from a separate storage silo to the binder container of the machine. When producing liquid soil, the mixture of soil and compound is pumped into the truck mixer simultaneously with an appropriate amount of water. The liquid soil is produced in batches and documented with a delivery note. It is mixed in the truck mixer for 10-90min and then poured. Additionally, the machine has a modern display and steering with distance service. The grizzly screen also features an auger.


Advanced recycling in Argentina with Rubble Master

The impact crusher RM100Go! has been put to full use by a customer of Rubble Master’s Argentinian Dealer Covema S.A.C.I.F., mainly crushing concrete and slag. RM says that with throughput of 150t/h, the machine crushes concrete and steel slag from 0-500mm to 0-30mm on site for eight hours a day. The customer, which recycles materials from road construction, crushes concrete for reuse for production of new concrete. Additionally, slag is crushed for road construction and recycled to produce new steel. However, slag usually contains iron, which can cause damage in the crushing chamber if the wrong crusher is selected. The advantage with the RM 100Go!, in Rubble Master’s own words, is the ‘RM Release System’, which removes blockages in the impactor and opens if pieces of iron are present in the material. 


Sandvik launches new crushers with automation and connectivity system

Sandvik has launched the upgraded 800i cone crusher range with the new automation and connectivity system, ‘ACS-c 5’. The models are said to combine mechanical design with automation to support diverse operational roles. The aim with the updated crushers is to offer simplified service and troubleshooting, improved safety and optimised performance while minimising downtime. The crushers target installed inefficiency in operating mines as well as in ‘green fields’, examples being flowsheets including three stage crushing and conventional grinding, assisting SAG/AG circuits with pebble crushing and optimising particle size distribution for lump ores and heap leach applications. The crushers are also suitable for HPGR circuits. The models can be connected to the ‘SAM’ by Sandvik’s cloud based digital assistant, a data capture and analysis service supporting crushing and screening plants. The service allows the user to see the status of the equipment, communicate across teams, view alerts and notifications, pro-actively order spare parts and more. 


Kleemann extends portfolio with new mobile impact crusher

Kleemann has introduced the first member of its ‘NEO’ line, the mobile impact crusher ‘Mobirex MR 100(i) NEO/NEOe’. Due to compact dimensions and low transport weight, the crusher can be used in different applications. The model is available in two versions depending on the application and can be run entirely electrically with ‘E-Drive’ (‘NEOe’) or diesel-direct ‘D-Drive’ (NEO). The Mobirex has a crushing unit with a four ledged rotor with a large impact range and rotor ledge options as well as a 4m² large, optional single deck secondary screening unit. This makes it possible to produce a classified final grain size. With the optional wind sifter, final product quality can be increased even more. The model also makes use of the ‘Spective Connect’, giving operators access to data on speed, consumption values and fill levels at their fingertips via a smartphone or tablet. It also offers troubleshooting aids for service and maintenance. Another feature is automatic crusher gap adjustment, as well as zero point determination, which compensates for wear during crusher start and retains a homogenous crushing product, according to Kleemann. 


Rotary screening buckets, screening buckets with shafts from CM

CM offers eight models of ‘CBR’ rotary screening buckets for 1t-6t machines, as well as six models of ‘CDS’ screening buckets with shafts for 2t-30t excavators. The CBR rotary screening buckets are developed for skid steer, backhoe and wheel loaders, as well as telescopic handlers. They feature a choice of basket mesh size and a conical basket shape. The basket has been lengthened by 50% - compared to previous models - and is said to possess the largest screening area in relation to the machine applied. Due to the choice of motor and hydraulic circuit, a drainage line is not required. RPM adjustment can be made in both directions thanks to the single CM valve. From the CBR 12 model onwards, the basket consists of eight symmetrical bolted grids that allow replacement of the grid in the event of grain size changes, and the front basket protects and supports the load of the gear motor. The ‘CDS’ screening buckets with shafts screen can crush light material even on wet ground. They are applicable to skid steer, backhoe and wheel loaders, features a low noise level and are suitable for small 3t machines. The buckets feature centralised greasing, do not require a drainage line and have a protected hydraulic system where hydraulic motors, valves and hoses are protected to prevent breaking.


BHS-Sonthofen delivers rotor impact mill and control system

Building materials supplier Dachser is expanding its gravel plant in Türkheim, Germany, with a second rotor impact mill of type RPM 1113 and a complete control system from BHS-Sonthofen. Since 2019, a rotor  RPM 1513 impact mill from BHS has been crushing material at Dachser’s gravel plant. The vertical shaft impact mill, which features a customised configuration, has proved suited for low to medium abrasive minerals. The new RPM 113 has a bottom mounted drive and a modified, elevated machine housing with optimised flow performance. The housing is a special version of the standard model with two enlarged openings in the discharge area designed to allow the faster discharge of crushed material and air. The control system for the two rotor impact mills and the corresponding environment is customised and includes frequency converters and a user interface featuring touch screens.

Kingson Crushers, owned by Mewar Hitech Engineering Ltd., now offers two products, namely the 100t/h single chassis two stage mobile plant and the 150t/h secondary unit. The mobile plant’s primary crusher has an opening of 750mm x 600mm, while the secondary crusher has an opening of 1,050mm x 200mm. The screen size is 400mm x 125mm and has three decks. The plant features a single toggle jaw crusher and is wheel mounted. The secondary unit has a cone crusher with a crusher opening of 150mm. The screening area is 450mm x 125mm, and the unit features three decks. The Kingson portfolio includes mobile screens with many combinations. Mewar was established in 2006 and is known for supplying tailor made products and is the only manufacturer of crusher plants listed in the Bombay Stock Exchange.


New tracked scalping screen from Edge Innovate

Edge Innovate has introduced the ‘Screenpro S18’, a 5.4m x 1.75m double deck heavy duty tracked scalping screen with interchangeable flip flow and conventional scalper screens. The model has different screen media options and configurations and can be utilised as a standalone unit or work with a primary crusher. The S18 features a 1,400mm wide variable speed feeder with forward/reverse functionality, with the load management system monitoring conveyor load pressures and regulating feeder speed. The model has a screening area of up to 18.3m² and a variable working angle. The screenbox encompasses hydraulic lift up functionality and is supported by walkways. The plant is customisable with side conveyors that can be reversed or discharged. The oversize discharge conveyor features a 1,600mm chevron belt with impact bars and rollers. The conveyor can be lowered to 5°, and the machine can be equipped with over band magnets and magnetic head drums. Other features include a low level feed hopper, two or three way split configuration and an integrated power unit. 

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