At the TU Bergakademie Freiberg, research is carried out into the preservation of the foundations of life in our society. Above all, this includes the secure and environmentally friendly supply of energy and raw materials. With the "Airlift" facility inaugurated on 22 October, scientists from the TU Bergakademie Freiberg and Polen are testing safe and clean technologies for the extraction of raw materials using high-pressure water jets. The results will flow into the construction of a pilot plant close to industry.
On the new six-metre-high test rig, researchers at the Technische Universiät Bergakademie Freiberg are testing the transport of the crushed material to the surface via a borehole.
(f.l.) Prof. Carsten Drebenstedt, Wolfgang Gaßner and Shevchenko Oleksandr at the new "Airlift" facility in the research and training mine.
Photo: Detlev Müller / TU Bergakademie Freiberg
The material is sucked out of a closed cavern (underground cavity) and crushed with the aid of compressed air and water and transported to the surface.
"The intervention at the surface is minimal. The resulting cavities are later filled again. Nobody has to go underground," explains Prof. Drebenstedt.
The Freiberg scientists are now investigating the optimum operating parameters for the new borehole technology in a practical manner in the new "Airlift" facility in the university's own research and training mine "Reiche Zeche".
The results should provide information about the operating conditions, performance and costs of the plant, which will be built in 2020 as an industrial pilot plant in Katowice, Poland.
The process can be used to extract various raw materials. Initial experience has been gained with uranium, phosphate and coal.
The research work is part of the research project "HydroCoal Plus" funded by the European Union within the framework of "HORIZON 2020 / 7th Research Framework Programme" and will be carried out together with Polish and Czech experts.
Prof. Dr. Carsten Drebenstedt, Phone: +49 3731/39-3373
Luisa Rischer | idw - Informationsdienst Wissenschaft
First research results on the "spectacular meteorite fall" of Flensburg
18.02.2020 | Westfälische Wilhelms-Universität Münster
The Antarctica Factor: model uncertainties reveal upcoming sea-level risk
14.02.2020 | Potsdam-Institut für Klimafolgenforschung
The operational speed of semiconductors in various electronic and optoelectronic devices is limited to several gigahertz (a billion oscillations per second). This constrains the upper limit of the operational speed of computing. Now researchers from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg, Germany, and the Indian Institute of Technology in Bombay have explained how these processes can be sped up through the use of light waves and defected solid materials.
Light waves perform several hundred trillion oscillations per second. Hence, it is natural to envision employing light oscillations to drive the electronic...
Most natural and artificial surfaces are rough: metals and even glasses that appear smooth to the naked eye can look like jagged mountain ranges under the microscope. There is currently no uniform theory about the origin of this roughness despite it being observed on all scales, from the atomic to the tectonic. Scientists suspect that the rough surface is formed by irreversible plastic deformation that occurs in many processes of mechanical machining of components such as milling.
Prof. Dr. Lars Pastewka from the Simulation group at the Department of Microsystems Engineering at the University of Freiburg and his team have simulated such...
Investigation of the temperature dependence of the skyrmion Hall effect reveals further insights into possible new data storage devices
The joint research project of Johannes Gutenberg University Mainz (JGU) and the Massachusetts Institute of Technology (MIT) that had previously demonstrated...
Researchers at Chalmers University of Technology, Sweden, recently completed a 5-year research project looking at how to make fibre optic communications systems more energy efficient. Among their proposals are smart, error-correcting data chip circuits, which they refined to be 10 times less energy consumptive. The project has yielded several scientific articles, in publications including Nature Communications.
Streaming films and music, scrolling through social media, and using cloud-based storage services are everyday activities now.
After helping develop a new approach for organic synthesis -- carbon-hydrogen functionalization -- scientists at Emory University are now showing how this approach may apply to drug discovery. Nature Catalysis published their most recent work -- a streamlined process for making a three-dimensional scaffold of keen interest to the pharmaceutical industry.
"Our tools open up whole new chemical space for potential drug targets," says Huw Davies, Emory professor of organic chemistry and senior author of the paper.
12.02.2020 | Event News
16.01.2020 | Event News
15.01.2020 | Event News
20.02.2020 | Physics and Astronomy
20.02.2020 | Physics and Astronomy
20.02.2020 | Power and Electrical Engineering