Tyres recycling

Pharmaceutical Applications of Polymers for Drug Delivery, David Jones, Queen s University, Belfast. Tyre Recycling, Valerie L. Shulman, European Tyre Recycling Association (ETRA). 

Keywords Vertical venturi separator Tyre recycling Automotive Classifier... 

The work reported on in this paper was in response to an industry problem on the removal of agglomerated steel and synthetic fibres from the saleable rubber crumb as part of an automotive tyre recycling plant. 

The use of a vertical venturi separator was successfully used to clean steel and synthetic fibres from rubber crumb produced from an automotive tyre recycling plant. The major advantage of the venturi separator was an inherent positive feedback loop that exists at the throat. If more material was introduced to the throat then a higher velocity was generated at the throat to help retain particles (dependant upon air mover characteristics). The more conventional cleaning units observed had a negative feedback inherent in their design, with an increased local load of product the air velocity would... 

Report 175 Tyre Recycling, Valerie L. Shulman, European Tyre Recycling Association (ETRA). 

ADEQ), Salt River Project, local concrete and tyre recycling industries. In February 1999, the author designed (about 23.6 kg of mesh 14 crumb rubber per cubic meter of fresh concrete) and supervised the construction of a section of rubber concrete sidewalk on the campus of ASU (warm climate). This sidewalk has entered its fifth year in service and it appears in excellent condition. 

The carbon footprint of tyre recycling is dominated by the processing of the tyres, followed by their transportation to the processing facility. Electricity was the largest source of this carbon footprint, with the use of diesel fuel the second largest. 

Two commercial processes that use high-pressure water jets to produce rubber crumb from waste rubber products are now reviewed. The Big Tyre Recycling Corporation (BTRC) situated in Gent, Belgium, has developed an ultra-high-pressure (UHP) water jetting... 

Figure 6.3 The BTRC UHP water jetting process for removing rubber from end-of-life large tyres (a) cutting operation and (b) jetting operation. Reproduced with permission of Big Tyre Recycling Corporation, Martelaarslaan, Belgium. 2014, Big Tyre Recycling Corporation...

In Europe, the Comite Europeen de Normalisation (CEN) technical committee TC 366 (Project Committee - Tyre recycling) published a Technical Specification (TS), CEN/TS 14243 2010 in 2010 that provides a definition for the categories of materials that are produced from end-of-life tyres based on their dimensions or impurities. This publication also provides test methods for the determination of the dimensions of the materials produced from all categories of end-of-life tyres, at all stages within the treatment process, as well as for the determination of impurities. It also describes test methods for the collection of samples, and for the preparation of representative samples based on a sampling plan for the purpose of determining dimensions and impurities. It does not cover the following technical areas ... 

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