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Co-processing

Co-processing in cement kilns is now globally recognized as one of the preferred methods to safely dispose of a wide range of hazardous and non-hazardous materials.

As part of the Sustainable Development practices, co-processing of waste also contributes to the more efficient use of natural non-renewable fuels and raw materials.

In co-processing of waste in cement kilns, two aspects occur simultaneously - the primary process of cement making and the secondary process of waste processing.


Co-processing waste in cement kilns offers many environmental advantages.
  • Energy yield on valorization approaching 100% - maximizing the recovery of energy from waste
  • High cement kiln gas temperatures (over 1800oC) at high residence time (up to 5 seconds) – representing ideal conditions for complete destruction of any organic material
  • Inherent cleaning of gases using lime (a basic ingredient of cement)
  • No waste residue (total incorporation of ash into finished product)
  • By using waste materials in the production of cement as a replacement to coal, this assists in reducing the overall CO2 emissions which are a major cause of Global Warming.