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TY - THES AU - Schoone, Sunny TI - Beitrag zur Automatisierung und Digitalisierung im primären Rohstoffbereich : Entwicklung eines Konzeptes für die Materialstromcharakterisierung im Arbeitsumfeld des Tiefseebergbaus; 1. Auflage VL - 110 PB - RWTH Aachen University VL - Dissertation CY - Aachen M1 - RWTH-2024-09398 SN - 978-3-941277-53-3 T2 - Aachener Schriften zur Rohstoff- und Entsorgungstechnik SP - 1 Online-Ressource : Illustrationen PY - 2024 N1 - Druckausgabe: 2024. - Auch veröffentlicht auf dem Publikationsserver der RWTH Aachen University 2025 N1 - Dissertation, RWTH Aachen University, 2024 AB - Deep-sea mining can help to secure the current and future increasing demand for raw materials. One focus here is on the commercial realisation of polymetallic nodule extraction, which would make many critical high-performance metals available to industry. Within this thesis, a task from the field of polymetallic nodule extraction was dealt with in deep-sea mining. The realisation of polymetallic nodule extraction is subject to many requirements that can only be implemented using innovative technologies due to the deep-sea environment. This includes the detection and characterisation of multiphase hydraulic pipe-supported mass flows within the seabed mining machine. This specific requirement is to be met with the help of a sensor technology designed for this application. By taking a closer look at the topic of deep-sea mining, the economic drivers and limiting factors of polymetallic nodule extraction are highlighted. This also implies existing potentials and the biological, physical and geological characteristics. The planned technological extraction of polymetallic nodule deposits, which is based on the principles of flow conveyance technology, includes environmental and process-related influencing factors that define a broad spectrum of requirements. In particular, the recording and characterisation of pipe-supported multiphase material flows during extraction can contribute to safe and optimised process control and the requirements for such a system are worked out via the resulting research question for development. Comparing the possibilities of process analysis and the current state of the art for the characterisation of multiphase material flows, an inline measurement system based on a separate phenomenon of structure-borne sound (acoustic emission) was selected. Such a measurement system has not yet been realised in this context. One question to be addressed for the implementation is how the given physical and mechanical requirements of deep-sea mining affect the sensor system to be implemented. The application of the sensor within a sensor housing is an atypical realisation and implies a translational influence component on the acoustic emission technology to be investigated. The individual segments of the measurement chain, which were designed to meet the requirements using simulations and load tests, were validated for their suitability in several laboratory tests and a suitable physical application of the measurement technology was developed. A large amount of measurement data can be recorded using inline application of acoustic emission technology. To answer the question of material characterisation of a pipe-supported multiphase material flow, a separate data utilisation concept was developed within several laboratory tests. This approach enables the separate recording of constant signal curves generated by friction and individual phenomena of the inhomogeneous components of the flow caused by impact. Different loads on the constant homogeneous phase with seabed fine sediments (homogeneous phase) are mathematically related to the resulting pipe friction. This allowed the different homogeneous phases to be differentiated in the sensor data. Coarse grains (inhomogeneous phase) are also characterised in a step-by-step data analysis. This resulted in qualitative limitations, which can be remedied by further developing the data utilisation concept. Overall, the combination of the measurement concept with the data utilisation concept fulfilled many of the requirements. In this context, the aspect of real application must be critically evaluated. All the investigations listed in this paper were carried out in a laboratory environment and must be validated in a real environment in the further course of the development of polymetallic nodule extraction. Through research in special research fields such as extreme mining - deep sea mining, innovative technologies are developed that can also lead to an extended application. This means that the developed concept can be used in related extraction or transport processes with adaptations. This includes the use for inline analysis of hydraulic multiphase mass flows in areas such as the wet extraction of raw materials (dredging, lithium mining), the monitoring of hydraulic displacement in mining or the quality control of hydraulic product flows (e.g. copper granulate, sand production) and the monitoring of pipe-supported liquid transport flows (copper mining, gas, oil). In this way, a contribution was made to the use of innovative sensor technologies for material flow characterisation in the raw materials industry. LB - PUB:(DE-HGF)11 ; PUB:(DE-HGF)3 DO - DOI:10.18154/RWTH-2024-09398 UR - https://publications.rwth-aachen.de/record/994586 ER -