Gulf Construction Online - Kleemann muscles in with largest model

Crushers & Screens

The MC 160 being assembled.

Kleemann muscles in with largest model

01 November 2010

KLEEMANN has once again demonstrated its competence in the construction of special plants with its largest mobile jaw crusher, the Mobicat MC 160 and its new MC 110 Z for recycling concrete.

With an overall weight of almost 400 tonnes, more than 9 m high and approximately 35 m long, this first-class plant is designed for maximum efficiency, says a spokesman for the company, which is a member of the Germany-based Wirtgen Group.

Highlighting some of the features of the Mobicat MC 160, he says: “In order to be able to feed the planned charge quantities of up to 1,500 tonnes per hour (tph) into the crusher, an apron conveyor is used as a feeding unit. This sits on a separate chassis with its own drive system and a hopper suitable for charging by dumper. The main unit consists of a grizzly using a double-deck roll screen and the SStR 1600 crusher, a single toggle jaw crusher with feed size of 1,600 by 1,250 mm, which already adds a good 80 tonnes to the weight.”

The machine is set to start operations at an iodine production mine in the Atacama desert in northern Chile, where huge quantities of stone containing iodine will be mined.

The MC 110 Z ... reliable crushing.

“Before the typical mining process of leaching and loosening, the MC 160 crushes the stone to a size of 0 to 250 mm. As a lot of material in the final grain size is already available in the charged material, efficient primary screening is particularly important. This is achieved using a double-deck roll screen in place of a conventional screen,” he explains.

The feeding unit already impresses with its dimension and performance details. A 225-kW diesel engine powers the hydraulics for the crawler running gear, and a separate generator makes available power for maintenance purposes and some auxiliary functions. The feed hopper is almost 8.5 m wide on the feeding side and can hold volumes of up to 200 cu m. The apron conveyor itself has a working width of approximately 1,600 mm and the length between the axes is almost 12 m.

On the main unit, two back-to-back roll screens with a width of 1.6 m and an overall length of 5.6 m ensure efficient primary screening, he points out. The crusher unit is suitable for feed sizes of up to 1,400 mm.

“Powered by a 250 kW electric motor, which is supplied by a 580-kW diesel engine, sufficient power is available for maximum feed capacities in all situations,” the spokesman says. “Just like all the Kleemann machines used in quarries, the diesel-electric drive concept used here also allows the plant to be connected to an external power source. The crusher discharge conveyor is 1.8 m wide and over 12 m long and thus offers sufficient capacity to safely and reliably discharge the material into stockpiles.

Meanwhile, the Mobicat MC 110 Z is a mobile jaw crusher with an active double-deck grizzly that is used in recycling rubble and for the treatment of reinforced concrete. Thanks to the 266 kW hydraulic drive, sufficient power is always available to also reliably crush large quantities of material and process reinforced iron, he says.

The machine is currently being used by a recycling specialist in Germany, in the demolition of a former federal barracks. Here feed capacities of 150 to 200 tph can be achieved for small gap widths, which in this case is made up of hard charged material that contains a great deal of iron.

The MC 110 with its 1,100 by 700 mm crusher inlet opening mainly processes reinforced concrete, but is also used for crushing brickwork. The material is used, on the one hand, for road construction (0 to 45 mm), and, on the other, for access roads and crane hardstandings in wind energy plants (0 to 56 mm and 0 to 80 mm), which are often built in this area as an alternative power generation.

The Wirtgen Group is an expanding and international group of companies doing business in the construction equipment industry. The group includes four well-known brands, Wirtgen, Vögele, Hamm and Kleemann, with their headquarters in Germany and local production sites in the US, Brazil and China. Worldwide customer support is provided by 55 of its own sales and service companies.