ABSTRACT: Cement production has been one of the most energy intensive industries in the world with energy typically accounting about 50–60% of the production costs. Reduction of the production cost is very much important. Grinding is the largest electricity consumer in the cement industry. It’s up to 70% of the total electrical energy in the cement industry. In this paper, the specific electrical energy (CEES) of the cement crusher has been modeled and optimized as a function of feed flow, separator speed and air flow using the experimental design method. The validation of the developed model was verified. The results confirm that the proposal model provided a satisfactory fit to the experimental data. The results also show that the increase in the feed flowresults in a decrease in the specific electrical energy, while the increase in the air flow and the separator speed causes a specific electrical energy increase. Excel solver based on a simplex optimization algorithm helped in reaching the global optimal solution for minimizing the specific electrical energy of the cement crusher.

Keywords –cement crusher, cement production,experimental design,specific electrical energy, modeling