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Fachartikel 03_2021

Progress in Marine Mineral Resource Research and Assessment – A German Perspective

In a world with a growing population the need to achieve climate policy goals as well as the UN sustainable development goals, primary mining for raw materials will continue in the coming decades. In the long term, recycling of metal stocks and a circular economy represent the most promising and responsible solutions and will help to eliminate the environmental and ...

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Detection and Differentiation of Sand Content in Hydraulic Transport using Acoustic Emission Technology

Deep-sea mining represents an opportunity for an alternative supply of high-tech raw materials. A concept for the extraction of polymetallic nodules from the seabed envisages the use of a harvester that extracts the nodules using a hydraulic principle. To design an effective and efficient mining process, the composition of the material flows must be continuously monitored. A promising technology for ...

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The “Vertical Approach” – a Sustainable Solution for Deep-Sea Mining and Sampling

The discovery of Seafloor Massive Sulfides (SMS) occurred in the Galapagos Rift area in 1977. A few years later, the former German mining company PREUSSAG AG started with the exploration of these newly discovered mineral resources followed by a first harvesting campaign of 30 t of massive sulfides collected with big TV-controlled grabs. In contrast to conventional mining concepts the ...

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Exploration of Shaft Asse 5 and the Recovery Mine – Further Exploration of Salt Dome Asse Eastern of the Existing Mine

According to a comparison of options regarding mine closure of Asse II mine, issued during 2009/10 by the Federal Office for Radiation Protection as the former operator, the best option is to retrieve the radioactive waste stored underground between 1967 and 1978 firstly before mine closure. This additionally would achieve for approval of long-term safety. In 2013 the retrieval of ...

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Geothermal Energy in Mongolia

Mongolia is a country rich in resources that faces many challenges in order to meet the requirements that were set in the Paris Agreement. The supply of electricity and heat for the cities, which are growing due to rural depopulation, specifically the capital Ulaanbaatar, is largely based on coal combustion in predominantly outdated power plants without flue gas purification systems. ...

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