Recycling Of Secondary Raw Materials From
End-of-life Car Tires
Author(s)
R. Ciccu & G. Costa
Abstract
The huge quantity of end-of-life tires discarded annually in developed countries
is posing major environmental problems due to restrictions against disposal in
landfills and to difficulties in obtaining suitable products to be sold in the market
as secondary raw materials.
Actually, mechanical processing of the tires in shredding, granulation and
pulverization plants is not a fully satisfactory solution because of operational
drawbacks (high energy consumption, considerable wear, low technical
efficiency), in addition to the poor quality of the components.
A new technology has been developed at the University of Cagliari based on
the use of high velocity jets of water enabling to achieve a thorough
disintegration of the rubber, leaving a very clean steel product.
The rubber granules so obtained can be used either for municipal water
filtration or for the manufacture of paving and building elements or as a
component of surface layer in roadways, thus contributing to the improvement of
living conditions in urban areas. This paper describes the main features of
waterjet technology and discusses the prospects of commercial application of tire
dismantling products that appear promising from both the technical and
economic point of view
Keywords: car tires, recycling, rubber granules, waterjet disintegration,
building materials, insulation.
1 Introduction
Presently more that 9 million tonnes of end-of-life (EOL) tires are discarded each
year in the world, corresponding to about 2% of total quantity of solid waste
Keywords
car tires, recycling, rubber granules, waterjet disintegration,
building materials, insulation.
Related Book
Other papers in this volume
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