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End-of-life Tires as an Alternative Fuel (TDF) in Cement Kilns: Now Easier than Ever!

Posted on November 30, 2017 By Mirja Yli-Erkkilä


End-of-life tires are a challenging type of waste since they are difficult to shred and are expensive to treat and get rid of. However, tire derived fuel TDF is an extremely good alternative to the traditional fuels used in cement kilns, like oil, coal, and petroleum coke. The following blog presents a solution and explains how TDF can be used for heating cement kilns.


The calorific value of tire shred is high and it has nearly the same heat value as oil. But what other benefits are there in utilizing tire shred as a fuel?

  1. Utilizing TDF saves significantly in fuel cost as traditional fuels can be replaced with cheaper tire shred that has almost equal heat value to oil and is even 25% more effective than coal.

  2. Compared to the typically used refuse-derived fuel (RDF) or solid recovered fuel (SRF), there is less variability in tire-derived fuel (TDF), which makes the burning process easier to manage.

  3. The number of end-of-life tires is growing globally and at the same time many countries are banning the dumping of tires in landfills. Thus, there is a huge amount of precious raw material—which many consider problematic waste—available basically everywhere.

  4. Using TDF in cement kilns reduces emissions of nitrogen oxides NOx and costs since less urea is needed. In addition, emissions of particulate matter are lower.

Yes, tire shred is a good alternative fuel in cement kilns. And there is a feasible solution for producing it.

tire derived fuel benefits in cement kilns


Four reasons why TANA Shark is an excellent machine for producing tire-derived fuel (TDF) from end-of-life tires

The high-torque TANA Shark shredder is perfect for processing end-of-life tires and producing TDF suitable for use in cement kilns. These four characteristics make it the perfect choice for this task:

  1. Optimal particle size: You can easily adjust the particle size of the tire shred to the required size within a 50–500 mm range. The optimal particle size is dependent on the feeding method, mixture used, and the technology of your cement kiln. The particle size produced can be adjusted by changing the screen and adjusting the number of counter-knives. With the TANA Shark’s side door, this can be done in minutes. Watch a video how the side door operates.

  2. Good shred constitution: A TANA Shark removes steel from tires very effectively and the small number of steel remnants is good since steel is a source of ferrous sulfide needed in cement production process. Read how a TANA customer doubled the amount of separated steel and resale price.

  3. Smoother shredding process: Typically, tires are shredded in three phases and with several machines. With a TANA Shark, you can do everything with one machine in only two phases. Read how one of our customers gained huge savings by moving from three-step tire shredding to two-step shredding. They got a faster process, higher quality and less expenses.

  4. Unique versatility: While a TANA Shark is great at shredding tires, it can also shred other waste materials. One of our customers running a materials recovery facility (MRF) shreds wooden poles and uses a mixture of tires (85%) and wood poles (15%) as alternative fuel in a cement kiln. This gives another benefit: shredding wooden poles cleans the shredder and no water is needed to reduce friction during shredding.


Video: Shredding end-of-life tires to 80mm (3") particle size with just one pass with metal wires separated


Interested to hear more?

If using tire shreds as an alternative fuel in cement production would be the choice for you, please contact us. We are more than happy to help you take your process to a new level!









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See also:
Puzzled by problematic waste such as tires, mattresses or ragger wire?
Textile Recycling – What can be done with old clothing and other textiles?
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