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19.02.2020  |  8483x
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BEUMER Group: An energy-efficient alternative

Fully automated tyre transport system at HeidelbergCement ensures continuous feed of waste tyres as secondary

The manufacture of cement is particularly energy-intensive. To reduce the use of valuable primary fuels like coal, HeidelbergCement is opting for alternative fuels, such as waste tyres. The calorific value of rubber is comparable to that of hard coal. And because the iron from the armouring can be incorporated mineralogically into the cement, it reduces the need to add ferrous corrective substances. Beumer group supplied the fully-automated system that sorts, separates and regulates the tyres of different sizes and weights and feeds them to the rotary kiln inlet. The system supplier also took over the installation and provided the steel structure. Thanks to the new system, the kiln of the cement plant is now fed with a constant stream of material.

The tyres that are used are production waste coming from the manufacturers as well as waste tyres from trucks and cars. This also means that they vary greatly: their diameters vary between min. 300 and max. 1,600 millimetres, their widths between 100 and 400 millimetres. The average weight is at eight kilograms for the car tyres and around 60 kilograms for the truck tyres.

BEUMER Group offers tailor-made systems. Based on wide-ranging experiences and customer requirements, the systems comprise the entire chain, from receiving and unloading the delivery vehicle, up to storing, sampling, conveying and sorting solid alternative fuels. This is why the managers decided for Beumer group. The main requirements on the tyre transport system were a reliable mode of operation for the differently sized tyres, easy maintainability and comprehensive customer support. And only eight weeks were scheduled to complete installation and commissioning.

Installation and commissioning were completed within the preset period. The conveying capacity can reach a maximum of three tons per hour, approximately 700 tyres. Thanks to the new system, HeidelbergCement can now feed its kiln with the combustible in a continuous stream and faster than before.

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