The extraction of and trade with so-called conflict minerals, which are used in the whole range of digital devices, are still used to finance the armed struggles of rebels and militias in countries such as for instance the Democratic Republic of Congo (DRC). Against this background Dr. Harder gives a special look behind the scenes in his article “Conflict-free ­Minerals” (from p.  52). He reports on the problem as well as on initiatives to obtain corresponding information and transparency of supply chains and of revenue respectively and the use of funds derived from the mining of raw materials.

Another specialist article dealing with the topic “Separation of very fine quartz sand using the HAVER FINE-LINE screening machine” allows an insight into the problems of the mechanical dry screening classification in the range of very fine particles (from p. 66). The main focus of the experimental investigations carried out in this connection was the determination of the influence of selected screen cloth properties and screening conditions on the quality of the screened products.

This month the POWTECH 2016 will open its gates in Nuremberg where about 900 exhibitors will present the latest technologies for processing, analysing and handling powder and bulk solids. In our preview, some of the exhibitors already provide information about the novelties and highlights to be expected (from p. 12).

Wishing you enjoyable reading of this issue and informative hours at the POWTECH.


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