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Terex® Dumpers Help Move Two Million M3 Of Earth In Bentonite Mining

Wednesday, November 14th, 2007

The Munich-based Süd-Chemie AG in Germany is a globally active special chemicals company with production sites and sales outlets in more than 20 countries. It has a workforce of around 4,800 people and achieves a turnover of more than one billion euros. Süd-Chemie extracts around 300,000 tonnes of raw bentonite, annually, from secondary deposits. Extraction involves removing some two million m3 of soil in order to reach the valuable raw material. In order to shift these quantities of earth, 10 Terex® TA30 and TA40 articulated dump trucks are in regular operation on a two-shift system.
Three new Terex® TA30-G7 articulated trucks are working at the latest mining site,,which covers an area of 2.8 ha. Süd-Chemie’s prospection department estimates that bentonite deposits at the mine amount to around 22,000 tonnes and the project will involve moving 256,000 tonnes of material. This is a full-time job for the Terex® dumpers, with the project due to be completed in less than a year.
The TA30 dumper capacity of 17.5 m3 is among the largest in this vehicle class. This, combined with the maximum payload of 28 tonnes and high productivity rates, mean that the customer benefits from lower costs per cubic metre or per tonne. The TA30 articulated truck is also fitted with a powerful and environmentally friendly 6-cylinder Cummins turbo diesel engine. The gross output of this economical engine is 287 kW (385 ps) at 1,800 r.p.m. One of the machine’s many advantages includes the low-maintenance wet disc brakes.
In addition to the features mentioned above, the TA30 has body heating and a liftgate and safety is considered in the provision of the wide-angle mirror. The TA30-G7 dumpers purchased by Süd-Chemie have been fitted with a central lubricating system and a reversing camera. The material surrounding the bentonite is removed by heavy-duty excavators and carried away by the Terex® dumpers. The bentonite layers are then loaded onto lorries and taken to a Süd-Chemie plant for processing. In difficult ground conditions that prevent the normal lorries from reaching the extraction site, the off-road capabilities of the Terex® dumpers again come into their own. They collect the material and transport it to storage depots where the lorries can reach it without difficulty.
Süd-Chemie’s two areas of business are catalytic converters and adsorbents. The starting material for products in the adsorbents division is the clay mineral bentonite – a clay-bearing rock that binds dissolved substances in water and liquids and can be modified by chemical refining to produce a wide range of adsorbents.
Bentonite takes its name from the site at which it was first identified, Fort Benton in Wyoming (USA).
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