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Thermal analysis of lithium ion battery cathode materials for the development of a novel pyrometallurgical recycling approach

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Carbon Resources Conversion 2021年第1期4卷 184-189页

作者： Stefan Windisch-Kern Alexandra Holzer Christoph Ponak Thomas Hochsteiner harald raupenstrauch Montanuniversitaet Leoben Chair of Thermal Processing TechnologyAustria

Since pyrometallurgical approaches on lithium ion battery recycling are not yet capable of recovering lithium but only nickel,cobalt and manganese,the Chair of Thermal Processing Technology at the Montanuniversitaet Leoben started to investigate experimental reactor concepts on their suitability to overcome this major ***,the general behaviour of currently used cathode materials under reducing conditions and high temperatures is of great *** work expands previous performed heating microscope experiments by thermogravimetric analysis(TGA)to characterize the reactions that are responsible for certain changes in the cathode *** comparing the superficial changes of the samples in the heating microscope with the corresponding data from the TGA,it was possible to identify the temperature zones in which reduction reactions *** all investigated cathode materials,the reduction reactions started at technically feasible temperatures of approx.1000◦C,which is favorable for the desired recycling *** the other hand,this is some hundred degrees higher than the temperature at which first changes in the heating microscope could be observed and indicates that there are changes in the material before the reduction ***,the results also emphasize the need for further analysis to clarify this offset and to complete the thermal characterisation of the cathode materials.

关键词： Lithium-ion-batteries recycling Thermogravimetric analysis Heating microscope High temperature processing Pyrometallurgy

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New developments to the post-processor in determining nitrogen oxide emissions with an computationally efficient approach

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Carbon Resources Conversion 2020年第1期3卷 198-202页

作者： Senthilathiban Swaminathan Christoph Spijker harald raupenstrauch Irmela Kofler Michael Koller K1-MET GmbH Stahlstraße 144020 LinzAustria Chair of Thermal Processing Technology Montanuniversitat LeobenAustria Ebner Industrieofenbau GmbH 4060 LeondingAustria

The previously developed numerical model available for predicting nitrogen oxide emissions uses flamelet approach to calculate the flame properties and estimates the concentration of NO_(X) with GRI 3.0 mechanism by solving the species transport *** existing model is further optimized to reduce the computation time without losing the *** approaches,by modifying the reaction rate calculation method,by predicting the initial values and by using dynamic mesh refinement,were implemented on OpenFOAM and analyzed with experimental data from Sandia Flame *** application of post-processor in simulating an industrial burner of 850 kW to determine nitrogen oxide emissions is also demonstrated.

关键词： NO_(X) Sandia Flame D OpenFOAM Chemical kinetics Zeldovich

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Energy and Material Flow Evaluation with CO2 Emissions in the Glass Production Process

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Advances in Materials Physics and Chemistry 2022年第5期12卷 82-105页

作者： Gregor Berger Zlatko Raonic Daniel Forthuber harald raupenstrauch Robert Hermann Chair of Thermal Processing Technology Montanuniversitaet Leoben Leoben Austria TüV SüD Landesgesellschaft Ö sterreich GmbH Bruck/Mur Austria

Glass manufacturing is an energy-intensive process with high demands on product quality. The wide usage of glass products results in a high end-product diversity. In the past, many models have been developed to optimize specific process steps, such as glass melting or glass forming. This approach presents a tool for the modeling of the entire glass manufacturing process for container glass, flat glass, and glass fibers. The tool considers detailed bottom-up energy and material balance in each step of the processing route with the corresponding costs and CO2 emissions. Subsequently, it provides the possibility to quantify optimization scenarios in the entire glass manufacturing process in terms of energy, material and cost flow efficiency.

关键词： Energy Efficiency Glass Industry Energy Balance Container Glass Flat Glass Glass Fiber

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