The four plants are used for limestone crushing and recycling. One argument for the purchase was the low consumption—on the one hand, it was another step in the direction of climate protection, and on the other hand, it lowered the operating costs. The handling of the machines was also impressive.
Limestone is crushed in a quarry in Robion. The material is very soft and fine and tends to cause dust. Especially in damp conditions in winter, it is also sticky, which can harm the crushing and screening process. The flexible plant train can master the different challenges, consisting of the impact crusher MOBIREX MR 110i EVO2 with double-deck post-screening unit and the classifying screen MOBISCREEN MSC 953i EVO. A very large number of different scalings can thus be obtained: From feed material 0-400, in the first step, 0/31 and 0/63 are separated. This is followed by further crushing and the separation on the screening plant: Here, the grain sizes 0/4, 4/6, 6/16, and 16/22 are discharged in parallel for the concrete industry or underground engineering.
Before using the MR 110i EVO2, another impact crusher was used in the quarry with two screening plants and a 12m² screening surface. Today, there is one less screening plant, and the screening area has been reduced to 9.5m². Nevertheless, the new Kleemann plant produces the same output. This means one machine less that has to be refuelled and serviced. As a result, the production costs can be lowered. Whereas 300 litres had to be filled daily in the past, now only 500 litres have to be filled every second day: 50 litres less per day. Furthermore, less refuelling and downtimes result in lower personnel costs. When working on limestone, the interlinked plant delivers an output of up to 2,500 tons a day.
The impact crushers MOBIREX MR 110i EVO2 process recycling material at two locations. Here, mixed rubble with a size of 0-600 is loaded onto the crusher. The configuration with a wind sifter has proved its value for this task and reliably separates plastic parts and wood. Tedious manual sorting work can thus be reduced. The plant's mobility pays off both in the quarry, where it is occasionally required and in recycling, where contractors partly carry out crushing work.
The machine operators appreciate the ease of operation and good accessibility of the plants. The innovative SPECTIVE operating concept allows even inexperienced operators to operate the machine easily. SPECTIVE makes intuitive operation possible and indicates directly which part caused the fault in case of faults. This reduces the time required for troubleshooting and the associated downtimes.
During the projects – from the initial discussions to commissioning – the managing director of the executing company, Sylvestre, felt well looked after and advised: "Here you're dealing with people who are passionate about the subject and who are very familiar with their machines," said Rudy Sylvestre. "Of course, a few things didn't quite work out during commissioning. This is normal with processes as complex as these. However, we could always rely on fast and uncomplicated help from Wirtgen France and Kleemann."
