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Analysis of the raw material resources of the Russian Federation has shown that the most large-tonnage raw material is the waste of wet magnetic separation (WMS), formed during the beneficiation of ores. A complex of studies on the use of WMS wastes showed that their most effective use is to mechanically activate a mixture of wastes and cement and to prepare a new class of binders — finely ground multi-component cements and binders with low water requirements. To carry out complex experimental studies, taking into account the existing requirements, an experimental centrifugal grinding unit (CGU) with specified trajectories of the grinding chambers was chosen. The developed grinder is intended for mechanical activation of fragile materials with different physical and mechanical properties by the combined method of grinding (dry and wet), both in periodic and in continuous modes. Analysis of the results of experimental studies indicate the effectiveness of the use of centrifugal grinding unit for the wet method of grinding and also allow us to conclude about the significant superiority of wet grinding for the production of fine raw materials.

Centrifugal unit of combined method of grinding for mechanoactivation of technogenical materials