Fachartikel 2021

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 ...

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 ...

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 ...

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 ...

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due to rural depopulation, specifically the capital Ulaanbaatar, is largely based on coal combustion in predominantly outdated power plants without flue gas purification systems. ...

Since summer 2019, an ad hoc group of the German Committee for Mine Rescue (Deutscher Ausschuss für Grubenrettungswesen – DA GRW) has been discussing several unanswered questions regarding the equipment of the mine rescue brigades currently active in Germany. The following questions were to be answered: Are there any supply gaps regarding the standard equipment of the mine rescue brigades, ...

In recent years and decades, structural change has taken place in all German mining regions. In general, it can be said that the old-established, large-scale coal and ore mines have been closed down or have moved from an active extraction phase to rehabilitation mining, combined with a corresponding reduction in the number of employees. At the same time, we are ...

afety is the highest goal in a mining operation due to its responsibility towards the involved persons as employees but also in terms of the society. Furthermore, economical risks are closely related to unsafe working standards enhancing the severity of incidents. The mentality for safe and aware behavior needs to be set for all internal stakeholders of mining activities and ...

Fans provide artificial air movement in mines. They are assigned to different applications. Whilst the main fans provide the total fresh air requirement for the mine workings, auxiliary fans provide pressure increases or relief and support the total ventilation system. Special fans form part of the primary haulage framework to bring fresh air to the workplaces and the working face. ...

The Coal Importers Association (VDKi), Berlin/Germany, will be celebrating 125 years of association history in 2021. The year 2021 also marks the first year of implementation of the measures that will put an end to coal-fired power generation. Despite the difficulties caused by the current coronavirus pandemic, the energy industry has proven its ability to maintain supply lines; deliveries to ...