Industrial experience with clinker grinding in the HOROMILL/sup R/

Comminution is an important element for cost evaluation in any cement plant, mainly in relation to the power consumed, which is about 80 to 90 kW for a cement plant. In the early 90s, grinding in cement plants was operated mainly by vertical mills for raw material with rather good results in the majority of cases, and by tube mills for cement, with some development of mixed grinding with roller presses completing tube mills, with a result not as reliable however better for energy. HOROMILL/sup R/ has introduced in this field an entirely new grinding process to reduce energy consumption with an original design, for both cement and raw grinding. We explain the principle of this mill, why this principle saves energy, and then show the industrial results obtained in the first big mills installed at the CIMENTAS plant, DARICA, KARSDORF as well as the other plants currently commissioned.