Darmstadt, May 21, 2025

Improved process reliability in sustainable cement production

It's all in the mix – with the completed expansion of its TestCenter in Darmstadt, Qlar now offers its customers comprehensive support in the simulation of blending processes. As part of sustainable cement production, the use of additives in concrete production can be tested and optimised.

By reducing the proportion of clinker, the cement industry aims to drastically cut CO₂ emissions in production. Cement manufacturers are therefore increasingly turning to additives such as granulated blast furnace slag, fly ash, calcined clay, recycled concrete and others. However, the different raw materials must be fed and blended in exact proportions to ensure the desired product quality. With the now expanded TestCenter in Darmstadt, Qlar offers perfect conditions for simulating such process steps and working with customers to validate the ideal material composition for the desired product result. ‘With the expansion of our TestCenter to include blending trials for sustainable cement, we are marking a decisive step forward in the development of environmentally friendly building materials,’ explains André Appel, Head of the TestCenter in Darmstadt. ‘Our goal is to take a leading role in the implementation of solutions and the validation of clinker substitutes in order to significantly reduce CO2 emissions in cement production.’                                       

Precise measurements and blending tests

The new closed loop system at the TestCenter allows different products to be combined and accuracy tests to be carried out using different measuring principles. At the heart of the new tower setup are the MULTICOR S mass flow meter and LIW Feeder MET screw feeder. MULTICOR S can measure bulk quantities of up to 7 t/h in the closed loop. Based on the Coriolis principle, this technology delivers high-precision measurements with an accuracy of ±0.5%, even with bulk material of different particle sizes. When combined with the LIW Feeder MET screw feeder, two-component processes can be simulated. The rotation of the MULTICOR measuring wheel causes an initial mixing of the materials. Various materials can be mixed in different ratios in the TestCenter. The customer analyses the resulting material samples and can use the results to fine-tune their production process.

‘The weighing, feeding and pneumatic conveying test stations already available at our TestCenter have now been meaningfully extended,’ says Karsten Grünewald, Head of Sales Infrastructure at Qlar. ‘Our customers benefit from simplified processes for evaluating new material combinations, dosing concepts and applications in order to make their cement production more sustainable.’ An initial test run with material from an international manufacturer has already been successfully completed, and further test series are in preparation.

In addition to its location in Germany, Qlar operates other specialised test and innovation centres to support customers worldwide in process optimisation. While the TestCenter in Prague, Czech Republic, focuses on the processing of alternative fuels for the cement and recycling industries, pneumatic conveying and injection systems are tested at the Doncaster site in the United Kingdom.

Further information at www.qlar.com/services/testing

About Qlar Group

Qlar (formerly Schenck Process) is a global provider of sustainable products, integrated solutions, and services in mission-critical applications for bulk materials. Headquartered in Darmstadt, Germany, the group has more than 1,100 employees with a presence in over 13 countries focusing on markets alongside chemicals and performance materials, infrastructure and energy as well as alternative fuels. The production sites are located around the globe in Germany, India, China, UK and Czech Republic.

The product range includes solutions for industrial weighing, feeding, conveying, milling and grinding, and related digital applications of the CONiQ product family. With its testing infrastructure of 4 global test centres and 6 centres of competence, Qlar knows more than 40,000 different bulk materials across its relevant verticals.

Under the motto “driving circular transformation” the long-established international company is taking on a leading role in climate-neutral material processing and will focus even more strongly on digitalised and sustainable solutions in future, helping their clients to achieve a carbon-neutral sector by 2050.

For more information, please visit www.qlar.com 

 

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