Solid Recovered Fuel

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Solid Recovered Fuel (SRF) is distinct from RDF in that its quality as a fuel is far higher and is set in EU standards. It is typically used in processes that require a high quality, small particle size, high Calorific Value, low Moisture Content material – such as cement kilns and new-generation ATT plants.

Whilst the data for SRF is often reported within the overall Waste Derived Fuel/RDF statistics, there is increasing evidence of a proportional growth in SRF production in the context of a reduction in RDF export[1].

RDF and SRF Export - after CIWM presidential report 2018
RDF and SRF Export - after CIWM presidential report 2018

Typical differences in the key parameters of RDF and SRF mentioned above are broadly as follows:

Parameter RDF Example SRF Example
CV 11 MJ/kg 18 MJ/kg
Moisture Content 25% 15%
Particle Size 300mm 40mm

Increasingly the market is considering further refinement of SRF which has been made into a pellet for ease of storage, haulage, and introduction into a Cement Kiln, with some companies seeking to achieve End of Waste classification that would then enable the material to be used in other applications as a blended substitute for coal - an example of this is Subcoal [2].

References

  1. CIWM Presidential Report 2018 – RDF Trading in a Modern World
  2. N+P website