CEN/TC 366 - Project Committe - Tyre recycling

This document specifies a method for the determination of low specific surface area of powders ELTs rubber by measuring the amount of physically adsorbed krypton gas and applying the theoretical multipoint Brunauer, Emmett and Teller (BET) method.
This document defines a specific method for powders taking into account that, in order to obtain an accurate value of specific surface area, a representative sample of the material to be tested is taken according to the principle that every particle of the sample that represents the lot have an equal probability of being included in the sample.

This document provides criteria for the sorting of whole end-of-life tyres (WELT) into different classes based on categories. It also provides criteria for the determination of their suitability to be used in recycling and material recovery processes.
The processes described in this document include sorting WELTs in order to determine their acceptance in recovery and recycling processes.
Criteria regarding the reuse of tyres to be mounted again in a vehicle are not addressed in this document.
This document does not cover the operational performance of the applications or the requirements of the materials for certain applications, which are usually agreed between the manufacturer and the customer.
Solid tyres are excluded from the scope of this document.

The purpose of this document is to provide information about a procedure based on the determination of a visual index correlated with the content of textile fibres, which are free and bounded to the rubber, of granulates. This approach is currently used by Spanish grinders in order to control the efficiency of their processes and is effective for granulates with particle sizes the bottom limit of which is more than 0,5 mm, and upper limit less than 10 mm.
NOTE   Part of this document is also the presentation of a study carried by Valoriza Servicios Medioambientales and Geneus Canarias S.L.
A test procedure for the determination of a visual index of the content of the textile fibre of a granulate sample, which is free and bounded to the rubber, from the ELT’s processing is described in UNE 53936:2015 EX: Materials produced from end of life tyres. Rubber granulates.

The purpose of this document is to provide a review of the studies that were performed on odour of ELT granulates.

This document provides test methods for the determination of the dimension(s) of shreds, cuts and chips (including protruding filaments) produced from all categories of end-of-life tyres at all steps of the treatment processes.
The methods described in this document include sample collection and the preparation of a representative sample based on a sampling plan for the purpose of determining dimensions.

This standard provides test methods for the determination of the particle size distribution of granulates and powders, produced from all categories of end-of-life tyres at all steps of the treatment processes as well as for the determination of impurities (including free steel and free textile content).
The methods described in this standard include sample collection and the preparation of a representative sample based on a sampling plan for the purpose of determining particle size distribution and impurities.

This document provides general definitions for sample collection and preparation of a representative sample based on a sampling plan for the purpose of determining dimensions and impurities.

This document provides two different methods for the quantitative estimation of non-metallic content remaining adhered to the steel wire obtained from the recovery of materials from end-of-life tyres.
The pyrolysis method is considered as the reference method while the hydrostatic method is considered as an in-situ method.
This European Standard includes sample collection and the preparation of representative samples based on a sampling plan for the purpose of their characterization.
This European Standard does not cover the operational performance or fitness for use of the materials which are deemed to be a function of agreements between the manufacturer and the customer.
This European Standard does not purport to address all the safety concerns, if any, associated with its use. This European Standard does not establish appropriate safety and health practices and does not determine the applicability of regulatory limitations prior to its use.

This document specifies a method for the identification of the elastomers in granulates or powder derived from End-of-Life Tyres.
The method specified is a qualitative method only.

This document specifies a method for obtaining a sample of rubber granulates or powders derived from End-of-life tyres which have been stored in big-bags.
Several sample increments at different levels within the big-bag are obtained, which represent the average particle size distribution within the big-bag. From these sample increments, a representative sample is derived.

This document sets out methods and test protocols used to determine the true density of granulates produced from ELTs based on water pycnometry.

This draft Technical Specification specifies a method for determining the total moisture content of materials obtained from End of Life Tyres (ELT) by drying samples in an oven. The method is applicable to chips, granulates, powders and textile derived from the treatment of End of Life Tyres.
This document is not intended for the determination of moisture content in steel wires.

This document specifies methods and test protocols used to determine the true density of granulates and powders produced from ELTs, based on water pycnometry.
This document is applicable for powders and granulates below 12 mm.

This document specifies methods for obtaining a sample of rubber granulates or powders derived from end-of-life tyres which have been stored in big-bags and small-bags.
Sample increments at different levels within the bag are obtained, which represent the average particle size distribution within the bag. From these sample increments, a representative sample is derived.
The methods specified in this document are applicable, for example, when the samples are to be tested for e.g. bulk density, durability, particle size distribution, moisture content, ash content, ash melting behaviour, calorific value, chemical composition, impurities.

This document specifies a method for determining the total moisture content of materials obtained from End of Life Tyres (ELT) by drying samples in an oven. The method is applicable to chips, granulates, powders and textile derived from the treatment of End of Life Tyres.
This document is not intended for the determination of moisture content in steel wires.

This document specifies two different methods for the quantitative estimation of non-metallic content remaining adhered to the steel wire obtained from the recovery of materials from end-of-life tyres.
The pyrolysis method is considered as the reference method while the hydrostatic method is considered as an in situ method.
This document includes sample collection and the preparation of representative samples based on a sampling plan for the purpose of their characterization.
This document does not apply to the operational performance or fitness for use of the materials which are deemed to be a function of agreements between the manufacturer and the customer.
This document does not apply to address all the safety concerns, if any, associated with its use. This document does not establish appropriate safety and health practices and does not determine the applicability of regulatory limitations prior to its use.

This Technical Specification provides criteria for the selection of Whole End-of-Life Tyres (WELTs) under different classes based on their size. It also provides criteria for determination of their suitability to be used in recycling and material recovery processes.  
The processes described in this document include sorting of WELTs in order to determine their acceptance in recovery and recycling processes.
Criteria regarding the reuse of tyres to be mounted again in a vehicle are not addressed in this document.
This Technical Specification does not cover the operational performance of the applications or the requirements of the materials for certain applications, which are usually agreed between the manufacturer and the customer.
Solid tyres are excluded from the scope of this document.

This Technical Specification provides definitions for the categories of materials produced from end-of-life tyres based on their dimension(s) or impurities. It also provides test methods for the determination of the dimension(s) of the materials produced from all categories of end-of-life tyres at all steps of the treatment process as well as for the determination of impurities.
The test methods described in this Technical Specification include sample collection and the preparation of a representative sample based on a sampling plan for the purpose of determining dimensions and impurities.
This Technical Specification does not cover the operational performance or fitness for use of the materials which are deemed to be a function of agreement between the producer and the customer.
NOTE   This Technical Specification does not cover downstream products prepared from the materials, including reclaimed or devulcanized rubber, surface-modified powders and pyrolytic output.
This Technical Specification does not purport to address safety concerns associated with its use. It is the responsibility of the user of this Technical Specification to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.