Helmholtz-Zentrum Dresden-Rossendorf
Type: Pilot Plant Country: Germany URL: https://www.hzdr.de
Helmholtz-Institute Freiberg for Resource Technology (HIF): Contact person for NetFlot project: Dr. Martin Rudolph
Institute of Fluid Dynamics (IFD): Contact person for NetFlot project: Prof. Dr. Kerstin Eckert
Institute of Resource Ecology (IRE): Contact person for NetFlot project: Dr. Madlen Stockmann
The Helmholtz-Zentrum Dresden-Rossendorf e.V. (HZDR) is a German research organisation and core partner in Eastern CLC. HZDR will serve as the single-point of contact and will lead the NoI. Within HZDR, three institutes are involved with their particular infrastructure and expertise (Institute of Resource Ecology (IRE), Helmholtz-Institute Freiberg for Resource Technology (HIF) and Institute of Fluid Dynamics (IFD). Jointly they provide Time Resolved Laser Fluorescence Spectroscopy (TRLFS) and UV-vis Titration for speciation studies in aquatic system, Extended X-Ray Absorption Fine Structure (EXAFS) at the European Synchrotron Radiation Facility (ESRF) in Grenoble for sorption studies at mineral surfaces and lab space in controlled areas for (radio) labelling of selected flotation components; Bench scale flotation experimentation for the quantification, analysis and modelling of fluid flow in the turbulent rotor-stator region. The floatability is fundamentally investigated with colloidal probe atomic force microscopy methods combined with Raman spectroscopy and complex studies of the surface energy distributions with inverse gas chromatography. Fluid dynamics at micro-scale is investigated by optical microscopy (bubble size & aggregate states (loading), at meso-scale by fast X-ray CT and Positron Emission Tomography (PET) for spatio-temporal (3D+t) visualization of flotation processes (phase/particle distribution, froth thickness), and at large-scale by wire-mesh sensors and/or electrical resistance tomography. Analysed data from bench scale is up-scaled and optimisations elucidated by means of advanced multi-phase models (e.g. Multi-Fluid Model coupled with the MUSIG model).
