Michael Klichowicz

Caminauer Kaolinwerk GmbH

The microstructures of mineral materials determine their mineral processing characteristics. Realistic microstructure models are a precondition for simulations of various mineral processing steps. For this reason, a model for simulating the microstructure of minerals that consists of densely packed grains of various phases is presented. It is based...

The comminution at the grain size level for liberating the valuable minerals usually requires the highest size-specific energy. Therefore, a full understanding of the comminution process at this level is essential. Models based on the Discrete Element Method (DEM) can become a helpful tool for this purpose. One major concern, however, is the missin...

This research aims to make it possible to use realistic mineral microstructures in simulations of mineral processing. In particular, comminution processes, such as the crushing and grinding of raw mineral materials, are highly aff ected by the mineral microstructure, since the texture and structure of the many grains and their micromechanical prope...

Simulations of comminution processes using the Discrete Element Method (DEM) are often discussed controversially. A major problem are the uncertainties in the proper calibration of the physical parameters. However, although its influence of the breakage behavior is indisputable, the real mineral microstructure is often neglected so far. This study...

Comparison of Experimental Particle Bed Comminution with a Two Dimensional Bonded Particle Model Simulation at Grain Size Level

Simulating comminution processes is one of the most complex tasks in mineral processing research and the Discrete Element Method seems to be a promising approach. However, the actual comminution processes at grain size level are comparatively challenging to model but essential to other parameters like mineral liberation. Simulations at this scale h...

For a detailed prognosis of mineral comminution processes, simulation tools like DEM still pose various challenges. Less realistic mineral structures can affect the results of simulation models such as bonded-particle models (BPM). Hence, in order to design mineral processes with these models as tools, representative mineral input data should be us...

Self-similarity is proofed to be a common feature when brittle material is comminuted, either in particle bed or single particle mode. Appropriate test work is well documented for particle sizes less than 7 mm in several publications. In contrast, almost no research has been done for coarser particles. The aim of this paper is to show that the frac...