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.
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