ELECTROPHYSICAL INTENSIFICATION AND SIMULATION OF GRINDING AND MIXING OF INORGANIC MATERIALS

Abstract

The working hypothesis previously confirmed at Phosphorit JSC (Kingisepp, Leningrad Region) on the significant effect of static electricity on the efficiency of grinding in cement clinker ball mills was successfully tested at the cement production. The method of electrophysical neutralization of static electricity charges has opened up the possibility not only to increase the productivity of grinders (by 12-18% wt.) or save energy for the electric drive (up to 20% rel.), but also made it possible to obtain homogeneous mixtures of dispersed inorganic powders, for example, a clinker encryption preparation, for example, when clinker is charged with sludge incineration ash. The homogeneity of such mixtures experimentally confirms the validity of the proposed mathematical model of the mixing process. The resulting dry mixtures showed the practical invariability of the mechanical strength of the cement stone based on them. The saving of the main binder-clinker was up to 15 wt. %, thus solving the problem of sludge incineration ash utilization