shred - Aliapur/Wiki GitHub Wiki
The term "shred" designates sheared pieces of end-of-life tyres. The shred is composed of elements of different sizes, essentially measuring between 25 mm and 350 mm.
Primary shredding consists of tearing or fragmenting operations on end-of-life tyres. The average overall composition of shred is similar to that of whole tyres.
Shredding
Typical examples of shreds
- Cement works (alternative fuel)
- Steelworks
- Foundries
- Granulation
- Urban heating
| Property | Passenger car ELT | Truck ELT | Source |
|---|---|---|---|
| Net calorific value (MJ.kg-1) | 30.2 | 26.4 | (Aliapur, 2009) |
| 28.4 | 28.5 | (Aliapur, 2015) | |
| Biomass fraction (%w) | 18.3 | 29.1 | (Aliapur, 2009) |
| 18.9 | 28.0 | (Aliapur, 2015) |
The following chemical compositions are extracted from an Aliapur report (French, 2015)
| Element | Passenger car ELT | Truck ELT |
|---|---|---|
| Carbon (C) | 64 - 68 % | 61.5 – 68 % |
| Iron (Fe) | 12 – 16 % | 16 - 25 % |
| Hydrogen (H) | 5.8 – 6.4 % | 5.5 - 6.4 % |
| Oxygen (O) | 3.8 – 4.9 % | 1.5 – 3.2 % |
| Silicon (Si) | 1.8 - 2.4 % | 0.3 – 1.5 % |
| Zinc (Zn) | 1.1 – 1.3 % | 1.3 – 1.6 % |
| Sulfur (S) | 1.3 – 1.4 % | 1.4 - 1.8 % |
| Element | Passenger car ELT | Truck ELT |
|---|---|---|
| Nitrogen (N) | 0.5 – 0.6 % | 0.3 - 0.45 % |
| Calcium (Ca) | 0.2 – 0.3 % | 0.04 – 0.09 % |
| Manganese (Mn) | 0.0001 – 0.0010 % | 0.1 – 0.2 % |
Aluminum, Arsenic, Barium, Brome, Chlorine, Chrome, Cobalt, Copper, Magnesium, Molybdenum, Nickel, Phosphorus, Lead, Potassium, Sodium, Titanium, Manganese
Below quantification limit (<0.001 %)
Selenium, Antimony, Beryllium, Vanadium, Mercure
Below quantification limit (<0.002 %)
Fluorine, Cadmium, Thallium
This work is licensed under a Creative Commons Attribution 4.0 International License.
You are free to:
- Share — copy and redistribute the material in any medium or format ;
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
Under the following terms:
- Attribution — You must give appropriate credit (click on 'Edit' then 'Page History' to see the authors), provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.