Ziel des Forschungsvorhabens war es, den Einfluss von Nebenoxiden aus Brennstoffaschen auf die Bildungstemperaturen der Klinkerschmelze und auf die damit verbundene Klinkermineralogie herauszuarbeiten. Ebenso sollten die Auswirkungen der verringerten Prozesstemperatur und der veränderten Eigenschaften der Klinkerschmelze auf die notwendige Bildung von Coatingschichten sowie die Feuerfestkorrosion und damit auf die Haltbarkeit der feuerfesten Zustellung in der Sinterzone des Drehrohrofens aufgeklärt werden.

In the IGF research project 23643 N, relationships between the particle size distribution of different cement compounds (clinker, calcined clays and limestone powder), and their reactivity and influences on cement performance are being systematically investigated.

The current requirements for low alkali cements mean that calcined clays can hardly be used as main constituent in such cements due to their alkali content. However, it is known that pozzolanic SCMs contribute to the prevention of ASR. The aim of the research project is therefore to systematically investigate the contribution of calcined clays to the prevention of ASR.

This research project serves to analyse the effects of various factors (especially chemistry and mineralogy of the raw clay, calcination temperature) on the effective alkali content of cements with calcined clays,

With us, you can expand your knowledge around the production of cement and lime, as well as in the area of concrete technology. As a competent partner, we have been offering our customers individual qualification solutions since 2010. In addition to German-language online courses, we also offer English- and Russian-language courses and other services.

Clinker production is the most energy-intensive process step in cement manufacturing. It can represent up to 90% of the total energy demand in a cement plant and is therefore a main focus not only with regard to cost optimisation and quality improvement of the final product, but also regarding emission control and the reduction of impacts on the environment. VDZ’s training will enable you as participant to obtain a deeper knowledge of the clinker production process and a better understanding of how the daily decisions can impact the overall performance of the plant (quality, electrical energy use, fuel consumption and emissions).

Raw material and cement grinding are the first and the last major process steps during cement production. The energy demand of these two processes amounts to up to ~70% of the electrical energy used in a cement plant. For you as participant, this training will help to obtain a better understanding of the comminution processes as well as the equipment used for grinding. The knowledge acquired in this online seminar will deliver a solid basis for assessing and evaluating the optimisation potential for grinding processes and the ground product.

The 9ᵗʰ International VDZ Congress took place in Düsseldorf on 6 – 8 November 2024. The VDZ Congress is the international scientific forum for the cement industry and its suppliers. Delegates from all over the world discuss the latest developments concerning the transformation of the industry on its way towards climate neutrality.