polab® Cal - The world's first fully automatic isothermal calorimeter

• Reduced clinker content in the cement through control and regulation of clinker reactivity

• Data on reactivity of cement available in less than 60 minutes

• 24/7 operation increases throughput and plant capacity utilisation

• Optimised specific costs for clinker and cement

For the first time ever, the reactivity of clinker and cement can be determined by means of a fully automatic, isothermal calorimeter that can be integrated into laboratory automation systems. polab® Cal represents a quantum leap in quality control and process control in a cement plant. Previously, it used to take at least 24 hours to analyse the reactivity of clinker and cement. Now, the results are available in less than 60 minutes. Together with the experts from Calmetrix®, thyssenkrupp Industrial Solutions has achieved a breakthrough in digital process control and building-material development. And now, at its plant in Lengerich, Germany, Dyckerhoff GmbH is the first cement manufacturer in the world to decide to use polab® Cal.

Frank Ruoss, Member of the Board of thyssenkrupp Industrial Solutions AG, Business Unit Cement Tehnologies: "polab® Cal offers users in the cement industry data for product and process control at a hitherto unachieved level of precision, speed and repeatability. In addition to the cement industry, polab® Cal can be used for quality control in the food industry, the pharmaceutical industry and the binding agent industry, as well as in other sectors of the basic materials industry."

In a pilot test at the Karlstadt cement plant of Schwenk GmbH & Co KG, the polab® Cal calorimeter successfully achieved all predicted values. The data and analyses jointly collected with Schwenk during the test are a key component for future control loops based on artificial intelligence (AI).

Reactivity determines cement performance

The determination of reactivity – i.e. the ability of a substance to undergo a chemical reaction – can be measured by means of the heat release per unit of time and is of great significance for the quality and usability of numerous substances. One of these is cement! Heat development is a direct measure of reactivity and thus of the performance of a cement. Reactivity is important for the speed of strength development and for durability. For example, excessive heat development in massive concrete components may lead to large temperature differences between the core and the concrete surface. Stresses, or even cracks, may arise as a result. For the cement industry, it is therefore important to be able to measure the reactivity of the cement as quickly as possible, and continuously.

Use in polab® laboratory automation system or as a standalone device

polab® Cal is the first automated calorimetry system that can be fully integrated into polab® laboratory automation systems or used as a standalone unit in the fields of research & development or product development. The system prepares cement samples fully automatically and analyses them on the basis of parameters specified by the plant owner. This includes weighing the sample, setting the water/cement ratio, blending the samples, loading the samples into the calorimeter, and automatic data evaluation. polab® Cal is of modular design and can operate one or more calorimeters.

polab® Cal is a milestone in the automated quality analysis of cement. Integration of a calorimeter closes the gap between process and product quality control. The particular strength of polab® Cal is its speed: Instead of a day, the owner of a cement plant now only has to wait less than an hour for the analysis results. This is a huge time advantage and, therefore, an enormous cost advantage. With the reactivity analyses of polab® Cal, cement manufacturers are more easily able to improve the consistency of their clinker and cement, and to adjust it to the respective market requirements.

About us:

thyssenkrupp Polysius GmbH specialises in the planning and construction of turnkey cement plants. We support cement manufacturers around the world with our product and service portfolio, which is based on more than 160 years of expertise and experience. In addition, thyssenkrupp Polysius offers innovative and proven solutions for the lime, sugar, and energy industries, as well as for mining (India). Our plants and machines use state-of-the-art production processes, conserve resources, minimise environmental impact and meet the requirements for economic efficiency and plant productivity. We support our customers in their daily work as a sparring partner for new tasks and jointly develop individual solutions.

For more information, visit: www.thyssenkrupp-polysius.com