Productivity increase of the vertical roller mill for cement grinding

The specific power consumption, product quality and other performance of the “OK” and “CK” vertical roller mills for cement grinding are briefly stated. Hence, the enhancement in increasing the productivity of the vertical roller mill at Chichibu Onoda Cement Corporation (COCC) is introduced. These include: (a) restoring a table liner and roller tires by hard-facing to reduce maintenance costs; (b) increasing the air flow rate through the roller mill to improve the production rate; (c) installing the separator outside the roller mill to reduce specific power consumption; and (d) implementing automatic on-line control of cement fineness to reduce personnel costs and stabilize product quality