IART employee since: 2013

Completion of studies (date, doctorate and topic):

• 2006 Dipl.Degree in Industrial Engineering at the TU Freiberg
• 2017 PhD at the TU Freiberg in the Faculty of Mechanical Engineering on the topic "Contribution to the classification of lumpy municipal waste in trommel screening machines"

Members of the working group:

• M.Sc. Julius Eik Grimmenstein (2021 Master in Lightweight Engineering at TU Chemnitz)
• M.Sc. Eric Trebeck (2021 Master in Environmental Engineering at TU Freiberg)
• M.Sc. Adrian Valenas (2021 Master in Materials Science at FAU Nuremberg-Erlangen)
• Dipl.Ing. Philipp Niebel (2021 Dipl. in Mechanical Engineering at TU Dresden)
• Dipl.-Ing. Laura Hunger (2022 Dipl. in Process Engineering at TU Freiberg)
• Dipl.-Ing. Christine Hecker (1987 Dipl. in Process Engineering/Silicate Technology at HAB Weimar)
• Dr.-Ing. Hans-Georg Jäckel (1991 Dr.-Ing. in Mechanical Engineering at the TU Freiberg)

Projects of the working group:

• CuprAlUp: Process developments for the upcycling of metal recyclates from Li-ion batteries for e-mobility and the storage of renewable energy (processor: E. Trebeck)
• KoLibri: Complex lightweight structures for electronic applications within the mobility sector (processor: J. Grimmenstein)
• Gabriela: Holistic processing of plastic recycling paths for resource-efficient and recyclable lightweight battery housings (processor: L. Hunger)
• . Hunger)
• SandCycle: Development and design of a modular plant for the recycling of foundry sand and foundry dusts (project managers: Dr A. Durjagina and L. Hunger)
• CircEcon: Research centre for a greenhouse gas-neutral circular economy (project manager: C. Hecker)
• . Hecker)
• Koresil: Concepts for the Resource-Efficient and Safe Production of Lightweight Structures (project leader: C. Hecker)
• EACplus: Sustainable Electric Architecture Casings (project leader: Dr T. Krampitz)

Description of the main areas of work:

• Li batteries, especially LiFePo:
  • Development of suitable pre-treatment methods for safe handling
  • Training for handling defective batteries and procedures in the event of fire
  • Recovery and recycling of LiFePo for further utilisation
  • Processing of metal foils with recovery of the coating and upcycling of the metal foils
• Fine grinding and use in additive manufacturing (ductile metals such as copper or renewable raw materials such as wood and straw) from various waste sources
  • Research into the taxonomy conformity of products (examples in the mobility sector: E-motors, battery boxes, inverters)
  • Model development for proof of recyclability
  • Development of recycling routes with proof of functionality
  • Deduction of design proposals (recyclable design)
  • Proof of ease of disassembly and repair on our own IART
  • . and repair friendliness at our own IART disassembly stand and with the IART verification concept
  • Material cards for the verification of the recyclability of materials to prevent the carry-over of harmful substances and thus compliance with the REACH regulation as well as proof of sufficientRegulation and proof of sufficient properties for recycling (Material Circularity Indicator)
  • Construction guidelines for recyclable design
  • Removal of obstacles to closing loops
• Plastic recycling
  • Sensor-supported quality management of colour recognition and interpretation
  • Development of AI and sensor-supported sorting by type of plastic, shape and colour
  • Sorting of black plastics (PA, PP) with different fillings or fibre reinforcement (GRP, CFRP)
  • Decoating of metallised plastics with recycling scenario (chrome, copper)
• Automated robot- and AI-supported material flow channelling
  • Test stand for sensor-supported sorting (metal detector, image recognition, laser scanning)
  • Dynamic image recognition of objects and markings with coupling to the digital product passport
• Processing of electronic scrap with a focus on the recovery of neodymium magnets
  • Process development for dismantling and demagnetisation
  • Mechanical processing and recycling of neodymium magnets
• Building material recycling of porous and carbon concrete as well as the processing of and carbon concrete as well as the processing of concrete itself
• Lightweight structures in plastic and metal construction with various reuse scenarios
  • Processing and sorting of aluminium alloys
  • Metallised polymer foams
  • Fibre-reinforced plastics such as GFRP or CFRP
  • Hybrid systems and layered composites
• Recycling concepts for machines and systems for the energy transition
  • Generators, electrical machines, inverters
  • Wind turbine blades with GRP and CFRP as well as hybrid composites and epoxy resin
• Machine development for shredding machines
  • Design and adaptation of shredding tools for plastics with and without fibre reinforcement
• Design and adaptation of shredding tools for plastics with and without fibre reinforcement
• Design and adaptation of shredding tools for plastics with and without fibre reinforcement

• Machines and processes in the technical centre
  • Technology for composite disintegration
  • Comminution of brittle and non-brittle materials in the field of coarse comminution to fine grinding
  • Classification and sifting (ZZ-classifier and channel wheel classifier)
  • Automated multi-sensor-supported sorting
  • Agglomeration (build-up and press agglomeration)
  • Disassembly station

• Teaching:
  • Material recycling (handling waste)
  • Sorting processes
  • Shredding of non-brittle materials
  • Recycling plants and material flows

IART employee since: 2019

Completion of studies (date, doctorate and topic):

• 2010 Diploma in Mechanical Engineering at the TU Dresden
• 2018 Doctorate at the TU Dresden at the Faculty of Mechanical Engineering on the topic "Methods for evaluating and monitoring the stability and tipping safety of mobile machinery"

Members of the working group:

• Dipl.- Ing.Ing. Peter Eitz (2021 Diploma Mechanical Engineering at the TU Bergakademie Freiberg)
• M.Sc. Oliver Schindler (2021 Master Mechanical Engineering at the TU Bergakademie Freiberg)

Projects of the working group:

• Deep Sea Sampling (DSS) Development of technologies for vertical minimally invasive deep sea mining (processor: P. Eitz)
• Large-scale grinding circuit test rig (processor: O. Schindler)
• Teaching training and field trips

Description of the main areas of work:

• Method and technology development, condition monitoring, predictive maintenance for autonomous mobile machines in the deep sea sector - winner of the bauma Innovation Award 2022 in the research category
• Innovative grinding-classifying circuits with roller mill for the primary and secondary raw materials sector
• Cross-domain, multiphysical simulation in the field of grinding and classifying machines using Matlab/Simulink, flowsheet simulation using Dyssol
• Teaching:
  • Dr. Zinke with teaching assignments in the courses Steel Construction, Processing Plants for Mineral Materials, Maintenance, Maintenance Engineering;
  • also responsible as AG for the exercises and practicals in Coarse and Fine Crushing Machines, Classifying and Mixing Machines, Sorting Machines, Conveying Technology, Steel Construction, Maintenance, Classifying Machines/Crushers/Mills)
• Planning and realisation of national and international technical excursions in the field of processing machines and conveying technology (destinations: Sweden, Finland, Spain, Bulgaria, Germany)

Scientific assistant at the IART since 2022

Completion of studies (date, doctorate and topic):

• 2011 Dipl.Degree in Mineralogy, Geochemistry and Petrography at the Mining University of St. Petersburg, Russia
• 2015 PhD at the Mining University of St. Petersburg, Russia on the topic "Mineralogical and geochemical characteristics of the platinum alluvial formations of the Svetloborsky and Nizhnetagilsky massifs, Urals"

Members of the AG:

• Dr.- Ing.Ing. Oleg Popov (2007 PhD at the TU Bergakademie Freiberg)
• Dipl.-Ing. Laura Hunger (2022 Diploma Process Engineering at the TU Bergakademie Freiberg)
• Dipl.-Geol. Arturo Hernán Bravo Méndez

Projects of the working group:

• SandCycle - Development and design of a modular plant for the recycling of foundry sand and foundry dust (responsible: A. Duriagina; L. Hunger)
• Mineralogical support of ongoing projects
• Analysis of the fundamentals of selective comminution on the basis of mineralogical and technical properties of raw materials (closed)

Description of the main areas of work:

• Development of a methodology for the processing of foundry used sand regeneration dusts using deflector wheel classifiers
• Predictions on selectivity during pulping, tool wear, energy requirements, etc. depending on the machine type as well as on the type of machine used. depending on the machine type and the design and operating parameters of the comminution units based on methods of quantitative microstructure analysis (QMA) of the mineralogical microstructures, supported by the analysis of Palmqvist cracks after micro-indentation
• Investigations into the mechanical properties of materials such as fracture toughness and Vickers hardness on a micro/nanometre scale (incl. micro-nanotomography)
• Investigations into the mechanical properties of materials such as fracture toughness and Vickers hardness on a micro/nanometre scale (incl. micro- nanotomography)
• Digitisation of material flows: Purification of gravel and sand with simultaneous extraction of valuable accompanying minerals using hyperspectral photography
• Characterisation of ores and rocks by applying quantitative microstructure analysis
• Determination and classification of ores and their deposits for comminution in various comminution machines
• Influence of the microstructure of ores on processing, Development of strategies for selective processing
• Determination of Vickers microhardness and fracture toughness
• Mineral Liberation Analyser (MLA)
• Determination of strength using a small point load tester
• Investigation of the abrasiveness and crushability of ores (LCPC test)

AG: Simulation & Electroimpulse Comminution (EIZ)

Name: Pierre Landgraf

Employee of the IART since: 12/2022

Completion of studies (date, doctorate and topic):

2010 Dipl.-Ing. Mechanical Engineering at the TU Chemnitz

2020 PhD at the TU Chemnitz at the Faculty of Mechanical Engineering on the topic: "Microstructure and hardness development in the laser beam treatment of high-alloy tool steels"

Members of the working group:

• M. Sc. Margarita Mezzetti
• Dipl.Ing. Christine Hecker
• Guest scientist: M. Sc. Tatiane Isabel Hentges

Projects of the working group:

• up_cement - Emission reduction through the reactivation of cement paste from recycled concrete
• RecyBau - BeBreSaRec - Development of a wet grinding process for the separation of cement paste from the fine aggregate to produce high-quality recycled crushed sand
• Support of simulation tasks (DEM, FEM, CFD, KNN, DoE) in ongoing projects

Description of the main areas of work:

• Electroimpulse comminution (EIZ) (Responsible: M. Sc. M. Mezzetti):
  • Stressing of primary and secondary raw materials using the electro-pulse method
  • Electro-hydraulic comminution (EHZ)
• Digestion comminution of old concrete
• Mechanical and thermal analyses (mechanical: e.g. Vickers hardness, point load test, thermal: TGA/DSC, density etc.)
• ).)
• innovative methods for screen classification and sifting
• numerical modelling of various processes in the field of processing machine and recycling system technology
• application of various numerical methods, such as Discrete Element Method (DEM), Computational Fluid Dynamics (CFD), Finite Element Method (FEM)
• Determination/characterisation of parameters for numerical simulations
• Application of artificial neural networks (ANN) in the field of processing machine and recycling system technology

Teaching:

• Teaching course on dedusting systems
• Exercises within the lecture series: Materials Handling, Conveying Technology and Maintenance
• Internships for the lectures "Fine Crushing Machines" and "Agglomerators"
• Supervision of student work