Background and goals of the research project

In cement production, a significant portion of the thermal energy is used to burn the cement clinker in the rotary kiln. Nowadays, alternative fuels (refuse derived fuels, RDF) are used in parallel with fossil fuels, replacing the former. From an economic point of view, cement manufacturers are striving to increase the share of alternative fuels in order to secure or improve their competitive situation. In addition to economic advantages, ecological advantages should also be mentioned. For example, the use of alternative fuels can contribute to reducing climate-relevant CO2 emissions.


The IGF project 20898 N of VDZ Technology gGmbH was supported by the AiF within the framework of Industrial Collective Research (IGF) of the Federal Ministry of Economic Affairs and Climate Action on the basis of a decision of the German Bundestag.

This research project has been concluded

Person to contact

Do you have questions regarding this project?

Dr Stefan Schäfer
Environment and Plant technology

+49-211-45 78-252

Other items of possible interest


Research projects

Investigation on the interaction of fuel particles and cement clinker with the aim of increasing the use of alternative fuels

The aim of the research project was to identify those fuel particles which potentially cause the greatest disturbances and to determine their rate of conversion in the flame and in the clinker bed. A further goal was to derive quality criteria for AF, to elaborate recommendations for the optimisation of fuel feeding systems and to develop a tool to estimate the suitability of an AF.

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