Abstract
The article presents research on the comminution of copper ore in a self-constructed mill using high-pressure water jet energy to investigate the usefulness of such a method for comminuting copper ore. As a result, ore particles are obtained that are characterized by appropriate comminution and a significant increase in their specific surface, in turn allowing for potential further processing of the mineral. A comparative analysis of the efficiency of copper ore comminution, primarily taking into account the unit energy consumption and the efficiency of the milling process, clearly indicates that the energy absorption of hydro-jet material comminuting is lower than during mechanical grinding, e.g., in a planetary ball mill. The applicability of the technique depends on the brittle nature of the host rock, e.g., it is especially appropriate for sandstone and shale ores.
Highlights
Shredding processes are widely used in various fields of raw material processing
The need to lower energy consumption is an issue stressed in the literature [4]
The results suggest that the particle size distributions depend mostly on the applied method of crushing
Summary
Shredding processes are widely used in various fields of raw material processing Such procedures are carried out in order to lower the costs of maintaining the cutter discs used in Tunnel Boring. Machines (TBM) operating in hard rock formations [1] They are used to obtain fine-grained particles, sometimes even nanoparticles [2] or those that have an increased specific surface, which can be especially useful in pharmaceuticals [3]. Fine-grained magnetite ores require fine grinding, often to below 30 μm, to liberate the magnetite from the silica matrix, which usually involves traditional techniques. These processes generate greater costs and require higher energy consumption. The need to lower energy consumption is an issue stressed in the literature [4]
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