The extraction of mineral materials from mining dumps is the focus of another project from the funding program "r ³ - Innovative Technologies for Resource Efficiency - Strategic Metals and Minerals" of the Federal Ministry of Education and Research. In Prof. Jens Gutzmer from the Department of Economic Geology and Petrology led project "SMSB - obtaining strategic metals and other minerals from Saxon mining dumps" are examined landfills on Saxon territory on its contents at strategic metals. The Technical University of Freiberg receives 910,000 euros of funding for the project by the federal government.
Source: Technical University of Freiberg
In addition to an interdisciplinary team of geoscientists, process engineers, chemists and metallurgists of the TU Freiberg participate the Company "GEOS Freiberg Ingenieurgesellschaft mbH ", the" SAXONIA site development and management mbH "and" AKW Apparate + method GmbH "as consortium partners in the project. The team is supported by Prof. Jens Gutzmer and in the coordination of the project by the Helmholtz Institute Freiberg for Resource Technology. Jens Gutzmer is director of the Institute. The application was initiated by the founder network SAXEED Freiberg and coordinated.
Goal of the research is to develop a process for the economical and environmentally friendly production economy strategically important raw materials from Saxon mining and metallurgical dumps. As a first step in this direction should be more exploratory drilling conducted in autumn 2012 at four locations. A stockpile inventories will be built, in which recorded information about the geographical location, ownership, the origin of the stockpile material, the structure of the heap, the value of matter and the potential of the 20 largest mining dumps are Saxony. In addition to information about possible mining, processing, production technologies and their costs are provided.
The cadastre is the extractive industries as a basis for technical and economic decisions. This is intended to be a tool for the transfer of advanced scientific methods in mining companies.
In the Erzgebirge was for centuries ore mining operation. Which according to the state of the art not to be conveyed or recoverable components of ore mined were stockpiled there, as in the technical language of the miners say, that is mounted on a dump. Especially from the metal mining of the last century there several large heaps (of mountains - waste rock), Spülhalden and washing sand heaps (heaps of fine-grained material, which result from flushing) from the preparation (crushing and separating processes), as well as slag and fly ash deposits smelting. These stockpiles contain finely intergrown minerals, and lower concentrations of the mined raw materials such as tin, zinc, silver, tungsten, and also accompanying elements such as lithium and indium, which were in the recovery in the past nor economically uninteresting. Many of these elements are now of strategic economic importance. Their recovery would be useful if it were possible to concentrate the value components efficiently and economically.
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