Focus areas

The Institute of Mineral Processing Machines focuses on the research and teaching of the development of energy- and resource-efficient machines for the economic and sustainable processing of primary and secondary raw materials.

Focal research areas of the institute; a detailed description in text form follows below the graph


► Text description of the above graph

From bottom to top, the above graph initially consists of a foundation of 3 different levels: The lowest tier is devoted to the Quantitative Microstructure Analysis (QMA) - a microscopic structural analysis developed at our institute which allows for the quantification of certain mineral properties that are important for later preparation.


The 2nd plane then subsequently addresses the respective numerical simulations of fluid flows (using Computerized Fluid Dynamics / CFD), fracture processes (via the Discrete Element Method / DEM) as well as vibrations (by means of the Multi-Body Simulation / MBS). In the 3rd step, these procedures are now modeled as realistically as possible by estimating the required process parameters (such as the type of load, liberation size etc.).


Based on this foundation are 4 “pillars” of different mineral processing technologies: comminution (crushing / grinding), classification (mechanical / by air), sortation (magnetic separation), and agglomeration; they are constantly refined at our institute by making use of the previous analyzes and simulations:

  • As for comminution, we design suitable crushers and mills, and engineer solutions for selective comminution and finish grinding, among other things
  • For classification purposes, we are working, inter alia, on intelligent vibrating screens, and the dynamic classification of ores
  • We focus on the sortation methods of Wet High Intensity Magnetic Separation (WHIMS), sensor-based sorting, and lautering
  • In the field of ​​agglomeration, we particularly concentrate on the procedures of press agglomeration, pelletization, and the post-processing of materials

The layer placed on these 4 pillars deals with the ensuing experimental investigations in our in-house laboratories as well as our pilot plant in a nearby quarry, with the help of which we verify the engineered processing technologies.


Finally, the “roof” of the graphic describes the objective the research work at the Institute for Mineral Processing Machines is aimed at: the development of innovative solutions for the efficient and sustainable preparation of primary and secondary mineral raw materials.


Based on an in-depth analysis of the raw material to be prepared, we develop ideas for a feasible processing technology, often with the aid of models and simulations. These are then verified in our test facilities, ranging from our small-scale mineralogical laboratory to our pilot plant in a nearby quarry.