Wirtgen Group

The new MOBISCREEN MSS 802(i) EVO offers users a mobile, efficient screening plant that was designed to meet changing challenges in different application areas. With its well-thought-out plant design and flexible conversion options, Kleemann demonstrates how a high material flow can be guaranteed in natural stone and recycling applications.

Screening made easy
With the development of the MOBISCREEN MSS 802(i) EVO, a new generation of screening plants and successor of the MS 15 Z, Kleemann consciously places the focus on the user perspective. The technology behind the screening process must be easy and safe to use for all users. The new plant impresses not only with technological highlights in the process sequence, but also through its ergonomic design, optimised operation and the user-friendly maintenance concept.

Improved mobility and flexibility in application
With its proportionally controlled running gear, the plant can be quickly relocated either by a low-loader to the job site or within the building site. Apart from other improvements of the new MSS 802(i) EVO, folding of the side discharge conveyors without the need for disassembly clearly reduces set-up times. Increased application variability is provided by a hopper rear wall that can be folded to three heights, which permits feeding of crushing plants with a lower discharge height. The large offer of screen surfaces and simple adjustment of the screen parameters, which make rapid adaptation of the MSS 802(i) EVO to a very wide range of feed materials possible, reduce set-up times and thus personnel requirements and costs. The screen casing angle with a wide adjustment range from 15.4 – 20° makes optimisation of the screening capacity possible. Special highlight: the simple and fast conversion from 3- to 2-way grit. The MSS 802(i) EVO can therefore be used to produce and discharge two or three final grain sizes and the conversion is fast and simple.

Operability and ergonomics for more comfort and safety
An intuitive plant control with automatic start reduces the risk of operating errors and saves learning times. All relevant functions can be operated from a safe distance, which offers high work safety. Further user-friendly aspects include very good access options and intelligent cleaning solutions, which minimise downtimes caused by maintenance. With all of these solutions, Kleemann placed the focus on the typical workday of users. This also applies to the standard series LED lighting, the optionally available extended premium lighting of work areas or the generously proportioned work platforms.

Efficient and precise process sequences for optimum material flow
An optimised material flow is a central aspect of all screening plants. Only if all components are tuned to one another can high productivity with minimised operating costs be achieved. With its new mobile screen for coarse elements, Kleemann demonstrates what screening plants of the latest generation can achieve. This includes a wide crusher discharge conveyor on which, like all of the other conveyors, the speed can be steplessly adjusted, as well as a large material transfer system to the screen deck for optimum utilisation of the screening surfaces. High discharge heights and thus higher stockpiles thanks to the optionally available extended crusher discharge conveyor and telescopic side discharge conveyors guarantee ideal processes on the building site.

It goes without saying that the new MOBISCREEN MSS 802(i) EVO can be operated through line coupling with all EVO and PRO crushing plants integrated in the process and safety system. Special application flexibility is provided by the stockpile probe required for the process coupling, which can be placed on any discharge conveyor of the plant.

Further information:
Wirtgen Group
www.wirtgen-group.com

To obtain final products for the production of asphalt, a PRO plant train from Kleemann is being used on the twin island state of Trinidad & Tobago: the mobile jaw crusher MOBICAT MC 120 Z PRO and the mobile cone crusher MOBICONE MCO 11 PRO. The mobile screening plant MOBISCREEN MS 953 EVO rounds off the process in the limestone quarry.

The good quality of the final product and simple line coupling of the individual machines to form a plant train were decisive criteria for the selection of the plant technology. With the PRO plant train from Kleemann, the uncomplicated coupling of the machines and the automatic processes tuned to one another facilitate operation.

Availability and output doubles thanks to line coupling

The plant train consists of three machines whose technical processes are coupled to one another (Figure 2). Thanks to the automated tuning, the burden on operators is reduced, the process is harmonised and therefore stabilised. Each machine basically operates independently but forwards signals to the upstream and downstream machines in the event of malfunctions or overfilling of feed material. The feed control Continuous Feed System (CFS) also guarantees optimum utilisation of the crushers, which are therefore loaded evenly with material. Furthermore, the connection of all machines guarantees safety: if an emergency stop is pressed within the plant train, all plants are stopped immediately. This concept prevents damage or overload situations.

During operation in Trinidad & Tobago, with the help of the line coupling the company performing the work was able to double the availability and output compared to the plants previously used in the quarry.

Personnel deployment was also more efficient. Normally one operator per plant is used, plus the excavator driver. Line coupling now allows the complete process to be controlled by two operators instead of four. The other two employees can therefore perform other tasks parallel to production, such as material provision or also logistics in the quarry.

Intuitive operation – under special conditions

After delivery of the new plants in September 2020, the project had to face the special challenge posed by the Covid-19 pandemic: the plant train had to be put into operation online without local supervision. How well plant start-up functioned in spite of these adverse conditions was shown after a year: there were no significant problems and the machines and crushing tools revealed hardly any wear. On the one hand, the long lifetime of the components resulted because the material was not so abrasive. On the other hand, due to a very finely tuned process and therefore the optimum material flow.

The SPECTIVE operating system makes its contribution to a trouble-free start-up because it can be operated easily and intuitively. The visual presentation and logical user guidance make errors almost impossible. Thanks to its simple operation, several employees received instruction in the use of SPECTIVE at the same time. High flexibility in work with the plant was therefore guaranteed right from the start.

Simple maintenance and care

The advantage for maintenance is that the components of the crushing and screening plants are very easy to reach. All positions can be accessed without any problems and without significant disassembly work. Regular maintenance of the plant train is therefore made easier. The simple screen media change with the screening plant MOBISCREEN MS 953 contributes to smooth operation. “Above all, we appreciate the readiness to find practical solutions. We already experienced good co-operation with the other brands we have from Wirtgen Group”, says Kyle Parsons, the Project Manager in charge at Jusamco Ltd. We know for sure that the contact partners on site can always provide professional support and guarantee a parts supply.

Further information:
Wirtgen SE
www.wirtgen-group.com

At this year’s bauma, Kleemann presents innovations from its comprehensive product portfolio with a total of nine mobile crushing and screening plants and its operating concept SPECTIVE. A world premiere is celebrated by the new impact crusher MOBIREX MR 130(i) PRO.

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World premiere for new PRO line plant

With the impact crusher MOBIREX MR 130(i) PRO, Kleemann presents a new family member from the PRO line. The plant is used as a primary and secondary crusher and combines output, precision and sustainability.

Thanks to its all-electric drive concept with the option of an external power supply and therefore CO₂-free operation, the plant guarantees low energy consumption per ton of final product. The optional large double-deck secondary screening unit permits the production of two classified final grain sizes. The MR 130(i) PRO covers a very wide application range in natural stone and recycling. With its heavy rotor and powerful electric 250 kW drive, the crushing unit guarantees a very high and stable throughput. A continuous crusher load is guaranteed by the Continuous Feed System (CFS).

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Operating concept SPECTIVE with new functions

The innovative operating concept SPECTIVE includes various components that are ideally tuned to one another and accompany the machine operator during the entire working day. Apart from the intuitive touch panel and different radio remote controls, the digital application SPECTIVE CONNECT, above all, supports the work site digitalisation. All relevant process information and reporting are now displayed on your smartphone without having to leave the feeding device. SPECTIVE CONNECT has new features, which will be presented at Bauma and which make work for the operator even easier. A new configuration tool, for example, supports the operator in the selection of the correct machine settings.

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Kleemann screening program extended

The new MOBISCREEN MSS 802(i) EVO has been designed as a powerful mobile screen for coarse elements for changing challenges in different applications. With its clever plant design and flexible conversion options, it guarantees an optimum material flow in natural stone and recycling applications. The large range of screen surfaces and simple setting of screen parameters make it possible to adapt the MSS 802(i) EVO easily to new application conditions. If a fine final product is to be screened from particularly coarse feed material, the plant can be quickly converted from three to two final grain sizes. Further advantages of the plant include its simple operability thanks to its intuitive control system, easy access to all relevant machine components and its drive concept with the option of an external power supply for emission-free and therefore environmentally sound work.

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EVO2 line for flexible application possibilities

The plants in the EVO2 generation demonstrate that output, efficiency and flexibility belong together. The latest members of the product line – the jaw crusher MOBICAT MC 110(i) EVO2 and the cone crusher MOBICONE MCO 90(i) EVO2 – will be presented together to the public at Bauma with line coupling. Both plants have an efficient drive concept and intelligent overload systems. Operation is simple thanks to SPECTIVE and SPECTIVE CONNECT.

The EVO2 line also includes the mobile impact crushers MOBIREX MR EVO2.  The plants impress with flexible application options in natural stone and recycling. The SPECTIVE operating concept ensures simple, intuitive control. The new feature here is that SPECTIVE CONNECT is now also available.

Further information:
WIRTGEN GROUP
www.wirtgen-group.com

With the new 280 SM(i) surface miner, the WIRTGEN GROUP, Windhagen/Germany, has developed another efficient and practice-oriented solution for the extraction of primary resources. Its innovative technologies enable high machine utilisation rates and maximum productivity.

The 280 SM(i) is a high-performance surface miner designed for the reliable and selective extraction of primary resources by direct loading, sidecasting or cut-to-ground. Raw materials are extracted and crushed in situ in purest quality in a single operation – without drilling and blasting and with minimal environmental impact (Figure 1). The 280 SM(i) is driven by four steerable and height-adjustable crawler units. The machine is highly manoeuvrable and can be quickly turned at the end of a cut. The LEVEL PRO ACTIVE automatic levelling system maintains the specified cutting depth with consistently high precision and without further aids.

The 280 SM(i) is an all-rounder for all rock hardnesses and applications. The 2,750 mm cutting drum unit with a cutting depth of up to 650 mm is precisely adaptable to each specific application and achieves outstanding cutting performance with minimal pick wear. Wear-resistant toolholder systems ensure optimal pick utilisation and minimal downtimes. The soft rock cutting drum unit is designed especially for high material flows in soft rocks. In contrast, the hard rock cutting drum unit ensures maximum durability and long life in hard rocks.

In the extraction of primary resources by open cast mining, the key priority is always a combination of highest possible productivity, maximum purity of the material mined and the reduction of impact on people and the environment to a minimum. Aside from performance, the productivity of mining equipment depends primarily on constant operational readiness and optimum machine utilisation. Only a reliable and maintenance-friendly machine assures high utilisation rates. The innovative operator’s cabin contributes to the operator’s ability to exploit the full potential of the machine and maximise productivity. The 280 SM(i) surface miner is therefore the tool of choice for cost-efficient mining processes in the 120 t-class.

The high-performance, hydraulically height-adjustable, rear discharge conveyor with a movable counterweight can be slewed to the right and left by 90° and enables the loading of mining trucks with payloads of up to 100 t. What’s more, the operator can continuously vary the speed of the belt independent of the engine speed to reduce belt wear dependent on the material volume and the piece-size of the mined material.

Entirely new standards are set by the dust-sealed and air-conditioned positive-pressure cabin with fresh air filtration, which effectively prevents the ingress of dust into the operator’s workplace. Mounted on the front left chassis column, the operator’s cabin with all-round glazing is decoupled from the machine body and can be rotated by 90° in both directions. Up to six cameras can also be installed to provide even better all-round vision. Various automatic functions also contribute to the operator’s comfort, reduce the risk of fatigue, assist the operator in the achievement of high productivity rates and make the overall process more efficient.

These days, the reduction of carbon emissions, noise, dust and vibration while maintaining consistently high extraction rates and productivity is more important than ever before. With the new surface miner, Wirtgen offers innovative technologies that minimize impact on the environment and conserve valuable natural resources. Thanks to the reduction of carbon emissions by low specific fuel consumption, an efficient water management system and effective solutions for the minimization of dust pollution, the 280 SM(i) shows that ecological and economic considerations are actually compatible and closely interconnected.

Further information/Weitere Informationen:
WIRTGEN GROUP
www.wirtgen-group.com

Avoid downtimes with effective overload systems

In rock and stone processing, during the crushing process various short-term or prolonged overload situations can arise. The overload systems of the MC 110 EVO2 and MCO 90 EVO2 pursue an important goal: increase in the operational readiness of the plant in a sustainable manner by guaranteeing a crushing process that is as continuous as possible. Both crushing machines are equipped with mechanically and software-supported overload systems.

 Overload system on the jaw crusher MOBICAT MC 110(i) EVO2

With its multi-stage overload system, the jaw crusher MOBICAT MC 110(i) EVO2 provides more safety with uncrushable material. If, for example, metal enters the crushing process, the crushing gap (CSS) opens automatically in up to two seconds over the complete gap range. The crusher itself does not have to be stopped during the temporary overload situation, which means that the crushing chamber is empty and manual clearing of the crusher is not necessary which saves work and time. When the overload situation is corrected, the system then moves back to the original crushing gap and the crushing process is continued. The pressure plate installed as a predetermined breaking point is preserved. The consequences are reduced downtimes and increased crushing capacity.

Overload systems on the cone crusher MOBICONE MCO 90(i) EVO2

The cone crusher MOBICONE MCO 90(i) EVO2 has two different systems installed. The overload system “Tramp Release” protects the crusher against uncrushable material such as wood or metal. The bowl including the bowl liner lifts automatically to allow uncrushable material to fall through. The “Ringbounce Detection”, on the other hand, reacts to an excessively high share of fines in the feed material and prevents “briquetting” – which means the clogging of the crusher or sticking together of the material. Here, the hydraulic pressure of the crusher is monitored continuously. The system reacts as required and therefore prevents latent overloads. Depending on the machine application, the “Ringbounce Detection” can be oriented via the control system to output (“Mixture Mode”) or product quality (“Precise Mode”).

By preventing machine damage and thus production downtimes, the overload systems from Kleemann therefore guarantee increased operational reliability for the users.

Further information:
WIRTGEN GROUP
www.wirtgen-group.com

Environmentally sound combined with an economic solution – The jaw crusher MOBICAT MC 110(i) EVO2 and the cone crusher MOBICONE MCO 90(i) EVO2, with their efficient crusher direct drive, have a holistic drive concept that forms the basis for high cost-effectiveness.

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Crusher direct drive with electric auxiliary drives – fuel-efficient and quiet

Both machines of the new EVO2 generation are equipped with a patented power train. The crusher is driven directly, enabling high fuel-efficiency, via a reliable fluid coupling. Conveying components, such as the vibrating feeder, the double-deck prescreen or the discharge conveyors, are all-electric. A robust and easily accessible gearbox guarantees efficient power transmission. It not only operates with a high level of efficiency but also has ideal protection against dust. Downtimes can be avoided to a large extent. The power and load-dependent fan drive also ensures low-noise and economical operation. Operation in ECO mode can additionally reduce fuel consumption as well as wear in idle phases. The plants can be optionally equipped with a heat package (-15 to + 50 °C) or cold package (-25 to +40 °C). The cold package has an autonomous auxiliary heater with a convenient timer function.

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Environmentally sound operation – less noise and dust

In the new drive concept, the speed of the cooler fan and therefore also the cooling capacity is controlled automatically, which considerably reduces the noise level. Apart from less dust penetration thanks to a lower volume of moved cooler air, work near to the machine is a lot more agreeable for the operator.

For the jaw crusher MOBICAT MC 110(i) EVO2, which is frequently used in urban environments, an optional noise protection package is also available. The considerably reduced noise level would even permit work without special ear protection – depending on the material to be processed, further environmental conditions and local regulations.

To reduce dust, the machines are equipped in the standard series, among other things, at the crusher inlet and crusher discharge conveyor with water nozzles and the corresponding technical infrastructure. As a result, an optionally available water pump or an external water source, if available, can be used. Optional belt covers also contribute to an improvement of the air quality during crushing.

These measures benefit the machine operator, the further peripheral devices on the job site, local residents and the environment.

Further information:
WIRTGEN GROUP
www.wirtgen-group.com

The jaw crusher MOBICAT MC 110(i) EVO2 and the cone crusher MOBICONE MCO 90(i) EVO2  were developed with a focus on output, efficiency and flexibility. The mobile plants are frequently used together in the first and second crushing stage and pay off, in particular, due to the joint output level and simple line linking (Figure 1).

The two crushing plants in the latest EVO2 generation are perfectly tuned to one another with regard to the transport points of the material, and the output also matches. The jaw crusher has the exact amount of power to perfectly utilise the cone crusher in the second crushing stage. The correct filling level of a cone crusher is particularly important to produce the highest grain quality with a minimum of wear. The MC 110 EVO2 can adjust its crushing gap fully hydraulically by up to 180 mm. The MCO 90 EVO2, on the other hand, can cover a gap range of 6 to 45 mm with its new crushing tools. Depending on the feed material, a downstream screening plant can be used to produce concrete or asphalt grain sizes in a single operation.

The crushing plant of both plants is optimized automatically by the innovative feed control CFS (Continuous Feed System) so that material is always conveyed with maximum efficiency through the machines. At the same time, the filling level of the crushing chambers is monitored. When the filling level reaches a height that can be defined in advance, the material feed of the machine is adjusted.

This system forms the perfect basis for the line coupling of an interlinked plant train. The optionally available probes at the crusher discharge conveyor and/or fine grain conveyor of the upstream machine monitor the filling level of the feeding unit of the respective upstream machine.

For safety reasons, the crushing and screening plants are connected to each other by a cable. If an emergency stop button is pressed on the plant train in the event of an emergency, all machines are safely stopped.

Further information:
WIRTGEN GROUP
www.wirtgen-group.com

The new MOBISCREEN MSS 802(i) EVO offers users a mobile, efficient screening plant that was designed to meet changing challenges in different application areas. With its well-thought-out plant design and flexible conversion options, Kleemann demonstrates how a high material flow can be guaranteed in natural stone and recycling applications.

Screening made easy

With the development of the MOBISCREEN MSS 802(i) EVO, a new generation of screening plants and successor of the MS 15 Z, Kleemann consciously places the focus on the user perspective. The technology behind the screening process must be easy and safe to use for all users. The new plant impresses not only with technological highlights in the process sequence, but also through its ergonomic design, optimised operation and the user-friendly maintenance concept.

Improved mobility and flexibility in application

With its proportionally controlled running gear, the plant can be quickly relocated either by a low-loader to the job site or within the building site. Apart from other improvements of the new MSS 802(i) EVO, folding of the side discharge conveyors without the need for disassembly clearly reduces set-up times. Increased application variability is provided by a hopper rear wall that can be folded to three heights, which permits feeding of crushing plants with a lower discharge height. The large offer of screen surfaces and simple adjustment of the screen parameters, which make rapid adaptation of the MSS 802(i) EVO to a very wide range of feed materials possible, reduce set-up times and thus personnel requirements and costs. The screen casing angle with a wide adjustment range from 15.4 – 20° makes optimisation of the screening capacity possible. Special highlight: the simple and fast conversion from 3- to 2-way grit. The MSS 802(i) EVO can therefore be used to produce and discharge two or three final grain sizes and the conversion is fast and simple.

Operability and ergonomics for more comfort and safety

An intuitive plant control with automatic start reduces the risk of operating errors and saves learning times. All relevant functions can be operated from a safe distance, which offers high work safety. Further user-friendly aspects include very good access options and intelligent cleaning solutions, which minimise downtimes caused by maintenance. With all of these solutions, Kleemann placed the focus on the typical workday of users. This also applies to the standard series LED lighting, the optionally available extended premium lighting of work areas or the generously proportioned work platforms.

Efficient and precise process sequences for optimum material flow

An optimised material flow is a central aspect of all screening plants. Only if all components are tuned to one another can high productivity with minimised operating costs be achieved. With its new mobile screen for coarse elements, Kleemann demonstrates what screening plants of the latest generation can achieve. This includes a wide crusher discharge conveyor on which, like all of the other conveyors, the speed can be steplessly adjusted, as well as a large material transfer system to the screen deck for optimum utilisation of the screening surfaces. High discharge heights and thus higher stockpiles thanks to the optionally available extended crusher discharge conveyor and telescopic side discharge conveyors guarantee ideal processes on the building site.

It goes without saying that the new MOBISCREEN MSS 802(i) EVO can be operated through line coupling with all EVO and PRO crushing plants integrated in the process and safety system. Special application flexibility is provided by the stockpile probe required for the process coupling, which can be placed on any discharge conveyor of the plant.

Further information:
WIRTGEN GmbH
www.wirtgen.com

PRO machines make the near impossible come true – grit in only two stages

In Schlag, in the Bavarian Forest, Berger Rohstoffe GmbH has been operating a granite quarry since 2020. This granite is crushed to road stone and grit in different fractions . The company was already working with a Kleemann plant train in a similarly structured quarry in the neighbouring Czech Republic. Due to this positive experience, a decision was also made in Schlag in favour of the mobile crushers, screens and stackers from Kleemann.

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Machines for tough applications

The robustness, stability and efficiency of the crushers were of decisive importance. For Markus Penz, operating engineer and plant operator at Berger, the well functioning maintenance and spare parts supply concept of Kleemann and the Wirtgen Group also played a role. This machine service ensures a high machine availability and trouble-free processes. The mobile plants from Kleemann allow quarries to operate with a high rate of return because, even as extraction advances, the transport paths always remain short.

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Kleemann plant train guarantees high productivity

The mobile PRO plant train has been in operation since August 2020. The core of the plant comprises the jaw crusher MOBICAT MC 120 Zi PRO and the cone crusher MOBICONE MCO 11i PRO. The screening plants MOBISCREEN MS 952i and MS 953i EVO and the stacker MOBIBELT MBT 20 supplement the plant train, which impresses in daily operation with its high productivity and cost-effectiveness (Figure 1). Hard granite is turned into grit for high-quality concrete and mixed aggregates are produced for anti-frost layers.

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Only two crushing stages to produce grit

The desired grit sizes are produced from the loaded granite in only two crushing stages. In the pre-crushing stage, the grain shape is only altered to a slight degree; the second stage consists of crushing to the specified size. “Normally, this is almost impossible. But, before starting work, for test purposes we had material from the quarries tested in Kleemann’s own laboratory. After fine-tuning of the plant according to these parameters, we produce continuously to this high quality level”, explains Andreas Wagner, Kleemann special consultant from Wirtgen Germany. Markus Penz is extremely satisfied with the result. “Approximately half of the material is transferred to our concrete mixing plants. Their requirements are stricter than the applicable standards. This plant allows us to easily meet all our target specifications because it works even better than we thought.” (Figure 2)

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Stable processes thanks to line coupling

The complete plant train consists of five machines and operates as a line coupling. This means that automatic control stabilises the complete process. Each machine basically operates independently but forwards signals to the upstream and downstream machines in the event of malfunctions or overfilling. The feed control Continuous Feed System (CFS) also guarantees optimum utilisation of the crusher.

All components are loaded evenly. This is not taken for granted in stone processing where a natural product is to be turned into a standardised product. The stone crushes differently and there are fluctuations in the deposits: in the structure, due to the weather and the type of feeding. Output fluctuations are therefore normal. It is precisely these fluctuations that are balanced out by the optimised process thanks to line coupling in combination with the machine control system, the correct selection of machines and not least through qualified personnel. The automated tuning relieves the burden on the operators and harmonises the process.

The connection of all machines also guarantees safety: if an emergency-stop button is pressed anywhere on the plant train, all machines are safely stopped. This concept prevents damage or overload situations. All of this combined results in a high availability and output with low wear.

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Operating concept with SPECTIVE increases safety

After delivery of the new plants, the three-man core crew in Schlag also had to familiarise themselves with operation of the mobile crushing and screening plants. They found this really easy because the crushing plants are equipped with SPECTIVE. SPECTIVE is an operating concept with an intuitive structure. It is started at the 12 inch touch panel (Figure 3). All data is displayed as values but also in image form. This means that the plant is also easy to operate by staff who are only deployed on rare occasions. Furthermore, the clearly arranged user guidance contributes to safety. “There’s not a lot you can do wrong during operation because the machine does not permit incorrect settings”, says Markus Penz.

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Wirtgen Group Service concept guarantees high machine availability

After the first few months and experience from the Czech Republic, the team in Schlag realised that machine availability was an additional plus point. Instructions are short and concise for everyday work, but are very precise. A lot of tasks that go beyond the daily check can therefore be carried out single-handedly. This is guaranteed by the practical machine design that places the focal point on the needs of operators. (Figure 4)

And if we ever need a Service technician, the specialists from Wirtgen Group are easy to reach. “We have competent contact partners on every level: in sales, service and spare parts supply. We are already familiar with this good co-operation because we have other devices and products from the other brands in the Wirtgen Group. Ownership of this plant train from Kleemann means that here in Germany we now have products in our fleet from all brands in the Wirtgen Group,” says Markus Penz.

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Dual Power: sustainable stone production with electric drives

Kleemann machines with Dual Power have a module well along the path to sustainable stone extraction and processing. Berger Rohstoffe GmbH wants to produces in an environmentally friendly manner. Fossil fuels no longer meet contemporary standards in the long-term – also in quarries. Berger therefore ordered all components of the plant train equipped with the external power supply option. The screens can be driven, for example, either electrohydraulically or diesel-hydraulically. At present, the purely electric drive is used in the quarry in Schlag to operate the mobile screening plant MOBISCREEN MS 953i EVO using the power from the jaw crusher MOBICAT 120 Zi PRO.

In the long term, the company wants to convert the complete structure of the quarry to electric drives. Apart from the machine selection, photovoltaic systems are also used in many of their plants.

Further information:
WIRTGEN GmbH
www.wirtgen.com

The red colour usually allows you to spot it from a distance: iron ore. The volcanic rock is mainly used in the manufacture of steel. India has vast reserves of iron ore and is the second biggest steel producer in the world. The mobile screening plants MOBISCREEN EVO from Kleemann GmbH, member of the WIRTGEN Group, Windhagen/Germany, are used during the extraction of the important material.

India’s total iron ore production for 2019 was 231 M t, approximately 90 % of which was used in domestic steel production. Hematite and magnetite are the iron ores mainly found in India. Thanks to its high quality and lumpy properties, hematite is the most sought-after iron ore for the local steel industry. Due to its fine grain properties, the processing method of the sedimentary rock usually demands a lot from the screens. This is where the classifying screens MS EVO provide a valuable service. In an iron ore extraction site in Keonjhar in the federal state of Orissa, Kalinga Commercial Corporation (KCCL) is responsible for iron ore extraction on behalf of the state-owned company Orissa Mining Corporation.

Since January 2020, six MOBISCREEN EVO mobile screening plants from Kleemann have been in use at the Keonjhar location screening material to the desired final grain sizes (Figure 1). More than 20 excavators are deployed for extraction, handling and loading of the ore. 140 large dumper trucks transport the material from the mines for further processing by the screening plants.

Five double-deck screening plants MOBISCREEN MS 952 EVO and a triple-deck screening plant MS 953 EVO make classification of the blasted and then crushed material into up to three or four (with the MS 953 EVO) fractions possible. With the use of these six mobile classifying screens, KCCL has achieved a continuous daily production target of 30,000 t in two-shift operation. The desired final grain sizes of 0 to 10 mm and 10 to 40 mm are thus produced.

The screening plants MOBISCREEN MS EVO also operate precisely and highly efficiently under extreme conditions. In the iron ore open pit mining site in Keonjhar, they process feed material with a humidity content of 6 to 7 % without any problems.

S. R. Samal, Managing Directorat KCCL: “We have been using Kleemann screening plants for more than two years. These plants have proved their value with regard to product quality and output. Over the years, they have become an indispensable element of our operation. The service, above all, is exemplary. The co-operation with the Wirtgen Group was crowned with success. The investment was worthwhile because we managed to achieve our goals within the defined period.”

The classifying screens in the EVO series impress with their high productivity, good transport properties and first-class screen results. The product series include the two double-deck classifying screens MS 702 EVO and MS 952 EVO as well as the triple-deck classifying screens MS 703 EVO and MS 953 EVO. Thanks to the particularly large screening surfaces of 7 or 9.5 m², high production outputs combined with effective screening of up to four first-class final products can be achieved. Depending on the application case, throughputs of up to 350 t/h (MS 702 and MS 703 EVO) or 500 t/h (MS 952 and MS 953 EVO) are possible.

With the MOBISCREEN EVO screening plants, Kleemann also places an emphasis on the subject of safety. The plants can be operated conveniently with intuitive control system via a mobile control panel that can be attached at three different points on the plant. This increases work and operational safety. Thanks to the easily accessible work platforms, service activities can be carried out quickly and screen surfaces can be replaced without any problems. All other service components can be accessed from the ground so that maintenance tasks can be executed without any complications.

Further information:
WIRTGEN Group
www.wirtgen-group.com