Foundries
Tests to introduce end-of-life tyre shred have been carried out in two foundries using a hot air cupola to recycle the metal and carbon black from the ELT (end-of-life tyre) shred in the cast iron. These tests took place in the context of a research convention co-financed by the CTIF research and development centre and by the ADEME, with a contribution from Aliapur. The results revealed that it is possible to load tyres and produce cast iron with all the required criteria.
After two years of tests – first in the laboratory, then in a factory – the use of tyre shred in foundries passed on to the industrial experimentation phase. Since June 2007, it has been used continuously in the FMGC foundry in Soudan (Loire-Atlantique, France). The experience shows that loading tyre shred into a foundry alters neither the fusion process, nor the quality and properties of the iron that is then cast, whilst simultaneously reducing the manufacturing costs.
The contribution that Aliapur has made for several years in the field of the standardisation of tyre shred finds its application in the use of this shred in foundries. The studies carried out effectively seek to determine the appropriate size of the shred in relation to the factories in the industrial process for the best recycling possible.
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