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Düsseldorf, Germany

Heuschkel S.,Marker Zement GmbH | Kuhn A.,Cemex | Lipus K.,VDZ gGmbH | Moller H.,Schwenk Zement KG
Cement International

Many new and updated ordinances and regulations have been produced in the past f ew years in the field of productrelated occupational safety and health protection, headed by the European REACH, CLP and Construction Products Regulations. This has also required adjustments to national regulations, such as the Chemicals Act and the Hazardous Substances Ordinance. Other important regulations are the Drinking Water and Groundwater Ordinance and TRGS 559. Source

Agency: Cordis | Branch: H2020 | Program: RIA | Phase: LCE-15-2014 | Award Amount: 10.03M | Year: 2015

The European cement industry has committed itself to contributing to climate protection measures and therefore to curbing its CO2 emissions. CO2 capture technologies, although an essential part of all CO2 reduction scenarios, are not yet ready for large-scale deployment in the cement industry. Hence, the primary objective of CEMCAP is to prepare the ground for large-scale implementation of CO2 capture in the European cement industry. To achieve this objective, CEMCAP will - Leverage to TRL 6 for cement plants the oxyfuel capture technology and three fundamentally different post combustion capture technologies, all of them with a targeted capture rate of 90%. - Identify the CO2 capture technologies with the greatest potential to be retrofitted to existing cement plants in a cost- and resource-effective manner, maintaining product quality and environmental compatibility. - Formulate a techno-economic decision-basis for CO2 capture implementation in the cement industry, where the current uncertainty regarding CO2 capture cost is reduced by at least 50%. For successful large-scale deployment of CO2 capture in the cement industry, technologies must be developed beyond the current state of the art. In order to bring the most high-potential retrofittable CO2 capture technologies to a higher TRL level and closer to implementation, CEMCAP will - Describe the routes for the development required to close technology gaps for CO2 capture from cement and assist technology suppliers along the related innovation chains. - Identify and follow up minimum five potential innovations springing from CEMCAP research. Technologies suitable for CO2 capture retrofit are focused on in CEMCAP, because cement plants typically have a lifetime of as long as 30-50 years. However, the results from CEMCAP will enable looking beyond this horizon. Therefore, CEMCAP will - Create pathways for the low to near-zero CO2 emission cement production of the future.

Fleiger P.M.,VDZ gGmbH | Reichardt R.,Dusseldorf University of Applied Sciences | Treiber K.,VDZ gGmbH
Chemical Engineering and Technology

Although established in the 1950s, the grindability test according to Zeisel is still one of the most important measurement techniques for the grindability of hard and brittle material. It is used intensively throughout the cement industry for testing clinker and slag, but also for limestone. Test results are applied for mill designing or capacity estimations and often form the basis for contracts for grinding equipment. The accuracy of the test strongly depends on the test parameters but also on the reliability of the employed measurement techniques. Although of high importance to the industry, these measurement techniques are not state-of-the-art. The precise measurement of grinding work by a load cell is introduced which replaces measurement by deflection and protractor. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

Palm S.,VDZ gGmbH | Proske T.,TU Darmstadt | Rezvani M.,TU Darmstadt | Hainer S.,Dyckerhoff AG | And 2 more authors.
Construction and Building Materials

This paper deals with the performance of concretes made of cements containing high levels of limestone between 35 and 65 wt.-%. The Article mainly focuses on cements with 50 wt.-% limestone. Several experiments regarding the fresh and hardened concrete properties were carried out. Chloride penetration, freeze-thaw resistance, carbonation resistance and long-term deformation behavior were analyzed. The results show that concretes with cements containing up to 50 wt.-% limestone and a water/cement-ratio of 0.35 may have sufficient properties for practical application if a stringent supervision is ensured. Furthermore, these concretes can exhibit mechanical and durability properties comparable to concretes according to EN 206-1 and the German national application document DIN 1045-2 made of EN 197-1 cements. Besides, the results revealed that these properties depend highly on the limestone characteristics. Life cycle assessment analysis revealed that a cut-off up to 25% in global warming potential of concretes made with such cements is achievable in comparison with German average cement with the same performance. © 2016 Elsevier Ltd. All rights reserved. Source

Carrasco-Maldonado F.,University of Stuttgart | Sporl R.,University of Stuttgart | Fleiger K.,VDZ gGmbH | Hoenig V.,VDZ gGmbH | And 2 more authors.
International Journal of Greenhouse Gas Control

Oxy-fuel combustion stands as a promising carbon capture technology to significantly reduce CO2 emissions from industrial combustion processes. Due to a different process layout compared to power industry as well as different boundary conditions further investigations and demonstration activities are required to develop the oxy-fuel cement process to maturity. This paper presents an overview on research activities and current state-of-the-art on the development of oxy-fuel combustion applied to the cement process. Oxy-firing concepts for cement plants are introduced under two process configurations. Modifications regarding plant lay-out and key components as well as operational implications are discussed. Relevant research projects focusing on the application of the oxy-fuel technology in the cement industry are presented and finally fields, in which further research is required, are identified. © 2015 Elsevier Ltd. Source

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