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Technology - Fuel efficient flexibility with Kleemann Mobiscreen MS 703 EVO

By Robyn Grimsley

In June, 30 years after Kleemann introduced its first fully mobile track-mounted crushers to the market, Wirtgen SA launched the new Kleemann Mobiscreen MS 703 EVO triple-deck mobile classification screen to South African customers at the Raumix Willows Quarry in Pretoria.

Customers from Wirtgen South Africa gathered at Raumix Willows Quarry in Pretoria on 9 June 2017 for the launch of the company’s latest offering to the South African market: the much-anticipated track-mounted Kleemann Mobiscreen MS 703 EVO classifying screen. The event was the first in a series of roadshows, demonstrations, and site visits to introduce the dynamic screening plant to the local market.

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The Kleemann Mobiscreen MS 703 EVO mobile screening plant offers excellent performance in both natural stone and recycling applications. Image credit: Robyn Grimsley

Wirtgen SA managing director Heinrich Schulenburg welcomed those present and kicked off the proceedings with an overview of the Wirtgen Group and its international operations, as well as insight into the announcement regarding the Wirtgen Group’s acquisition by US-based manufacturer John Deere & Co. Also present from Wirtgen SA were Mike Newby, sales consultant: Mineral Technology; Waylon Kukard, sales manager; and Lantie van der Merwe, sales consultant: Kleemann, who were on hand to introduce the new machine and answer questions about its specifications and capabilities.

Newby highlighted Kleemann’s contributions to the crushing and screening industry over the past 160 years, including the fact that it was one of the first companies to offer a hand-fed, wheel-mounted crushing screening plant in the 1950s. “In 2010, four years after joining the Wirtgen Group, Kleemann started manufacturing its new EVO range of mobile crushers and screens, and in 2013, it turned its focus completely to mobile equipment.”

“Kleemann crushers offer unmatched fuel efficiency,” Newby added. “Our MC110R EVO jaw crusher (jaw size: 1 100mm × 700mm) uses about 18 litres of fuel an hour, and our MCO 9 S EVO cone crusher (crusher inlet size: 950mm) runs at around 22 litres an hour. This is about a third of the fuel that machines from other manufacturers use — nobody can touch our fuel consumption. This is because all of our machines run diesel-electric drives, and all the drives, except for the tracks, are electrical. When the machine is in working mode, everything — even the crusher, which is driven directly from the engine via fluid coupling — is running off electricity, ensuring exceptional fuel consumption.”

Market share

According to Newby, the Wirtgen Group is one of the largest providers of mobile crushing and screening equipment in the world, with a total market share of 9.8% in 2016, behind only Terex (including Finlay and Powerscreen), Sandvik, and McClosky, and ahead of Metso.

Of the 5 700 mobile crushers sold in 2016, 1 800 units were sold in Europe, where Wirtgen has 15% of the total market share, and 1 400 units were sold in North America, where the Group has 5% of the total market share.

The Group also has 8% of the market share in South America, 6% in Australia (where its crushers are used in iron ore applications, among others), and 4% in Africa. In South Africa, Kleemann crushers and screens are used in several different applications, including quarry rock in KwaZulu-Natal and Gauteng, coal in Mpumalanga, and manganese in the Northern Cape.

 MS 703 EVO

Wirtgen SA’s sales consultant for Kleemann, Lantie van der Merwe, gave a breakdown of the specifications and operation of the MS 703 EVO. Developed and designed in Germany, and built at the Kleemann facility in India under the same quality assurance systems enforced at all Wirtgen Group facilities across the globe, the MS 703 EVO is a triple-deck mobile classification screen that precisely screens out almost all types of coarse natural stone, residual construction materials, and iron particulates of up to 150mm up to four fractions.

A member of the company’s versatile and efficient Mobiscreen MS EVO line, the MS 703 EVO is intended for use in applications in both the mining and construction sectors, with its favourable transport dimensions and short set-up times designed to meet the demands of contractor crushers.

The large engine compartment eases maintenance, and other service components are easily accessible via the all-round work platform.
Image credit: Robyn GrimsleyWirtgen SA customers gathered at Raumix Willows Quarry for the launch of the Kleemann Mobiscreen MS 703 EVO.
Image credit: Robyn GrimsleyDouble bracing at intersections ensures high mesh stability and thus uniform screening. 
Image credit: Robyn GrimsleyThe MS 703 EVO can readily accept feeding by means of a wheel loader or excavator, or directly from a crushing plant. 
Image credit: Robyn Grimsley

“The ‘MS’ stands for mobile screen, the ‘70’ refers to the 7m2 screening area (1 520mm × 4 400mm), and the ‘3’ refers to the triple deck. The machine has a feed capacity of 350 tonnes per hour with a maximum feed size of 150mm, and can readily accept feeding by means of a wheel loader or excavator, or directly from a crushing plant. The feeding height to the slotted grate is about 3.6m. The feed hopper is available in two sizes — 8m3 or 10m3 — and can operate with or without the folding grate,” said Van der Merwe. Available with either a diesel-hydraulic or diesel-electric drive, the MS 703 EVO’s dual power option allows for the use of external power, with the 75kW Deutz engine using an average of 10–12 litres per hour.

The material is conveyed to the screen box on the extra-wide feeding conveyor of 1 200mm, with a screening angle that can be adapted to the application. “The robust impact plate on top of the feed conveyor ensures that the material is evenly distributed on the screen surface, keeping wear to a minimum and guaranteeing a high throughput. The screen media can be easily changed thanks to both the wedge system and the easily accessible maintenance area,”Van der Merwe added.

Specs table
The technical specifications of the Kleemann Mobiscreen MS 703 EVO.

The plant screens out material after the initial crushing process and offers superior performance, fuel efficiency, and intuitive handling. The large number of screening media allows the plant to achieve a variety of final grain sizes and to take different feed material, while its generously proportioned screen casing ensures that material is well distributed across the screen surface.

The plant also has a special space-saving transport position, so that the most compact dimensions (16.7m length, 3.2m width, 3.4m height, and weight of just under 30 tonnes) can be achieved should the plant need to be moved to a new site. This is complemented by quick set-up times and fast screen media change capability via a built-in peripheral platform, which ensures easy access for maintenance and screen media changing.

Lantie van der Merwe (sales consultant: Kleemann) gave those in attendance in-depth information on the Kleemann Mobiscreen MS 703 EVO. Image credit: Robyn GrimsleyMike Newby (sales consultant: Mineral Technology) presented an overview of Kleemann’s history and operations.
Image credit: Robyn GrimsleyWirtgen South Africa managing director Heinrich Schulenburg spoke about the Wirtgen Group’s history and the announcement regarding its acquisition by US-based manufacturer John Deere & Co. Image credit: Robyn Grimsley

Classifying screens

Kleemann’s Mobiscreen series of classifying screens are renowned for their inherent flexibility, which contributes to optimal functioning and resultant high output values. Suitable for a host of applications, the MS 703 EVO’s adaptability is made possible by the variety of available screen casing sizes, as well as the ease and speed with which it can be transported.

Screening media are manufactured from a special wear-resistant spring wire steel or round wire to withstand the workload and produce consistently accurate results. Double bracing at intersections ensures high mesh stability and thus uniform screening. Both folding and vibration gates are optionally available.

Various mesh shapes and dimensions, including square, rectangular, and harp, are available to suit a variety of applications. Different wire qualities and thicknesses allow the customer to balance longer service life against higher production, depending on the demands of their operation, with thicker wire offering longer service life, while thinner wire ensures higher production.

Square mesh screen surfaces are the most commonly used, predominantly in applications where a cubic shape is required. Rectangular mesh screen surfaces are for screening cubic grain sizes and are often used to sort natural gravel at high throughput. Finally, the self-cleaning harp screen media — available in W-harp, S-harp, and Varia harp versions — are used for screening damp and difficult-to-screen products and should be inserted on the screen’s lower deck.

The Kleemann Mobiscreen MS 703 EVO’s fast set-up time, operator-friendly design, and cost-saving features are supported by qualified service technicians who are available 24/7, and all recommended spares are available through Wirtgen SA.

Safe operation

Kleemann’s Mobiscreen EVO screening plants have been designed with safety in mind. “The mobile control operating system, which controls the operations of the screening plant, can be attached at three different points on either side of the plant,” said Van der Merwe. This guarantees the best viewing positions of the executed plant functions. All plant functions are started automatically, without each side discharge conveyor having to be activated individually. The machine can also be unfolded via the remote — an industry first, according to Wirtgen.

Data on machine operation can be read off at the control panel, while plant movement is without jolts thanks to proportionally activated hydraulic valves. The plant operates particularly efficiently and produces a high output when interlinked with crushing plants of the EVO series, whose size and output are tuned to the EVO screening plants. A further bonus for safe plant operation is the emergency-off function, which, in the case of an interlinked combination of plants, works across all screening and crushing stages.

The large engine compartment eases maintenance, and other service components are easily accessible via the all-round work platform. The easily accessible screen decks ensure simple screen surface changing and the large number of screen surfaces ensures that there is a suitable surface for every application.

Screening media are manufactured from a special wear-resistant spring wire steel or round wire to withstand the workload and produce consistently accurate results.
Image credit: Robyn GrimsleyThe Kleemann Mobiscreen MS 703 EVO mobile screening plant offers excellent performance in both natural stone and recycling applications. Image credit: Robyn Grimsley


 

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