Operating Data for Large Grinding Mills
The operational experience with large capacity grinding systems for both cement raw material grinding and cement clinker grinding is discussed. The results show that large capacity units are not at a disadvantage when compared to smaller units.
Large Mills for Dry Raw Material and Clinker Grinding
The development of grinding mills, especially in the last few years, shows a continuing trend to larger units. Particular attention must be given to the drying process during dry grinding. Several grinding methods are available, depending upon the material to be ground, and the optimum method must be carefully selected in each case. Special consideration must be made with large ball mills to assure the utilization of all waste heat from the kiln for the drying process. In many cases a roller mill represents a good alternative.
Users' Needs Lighting, Start-Up Power, Transportation, Mechanical Utilities, Heating, Refrigeration, and Production
The needs for emergency and standby power to enhance industrial and commercial power systems are frequently left wanting due to ignorance of the needs or of the systems available to satisfy the needs. This paper discusses various situations which require or desire emergency or standby power and mentions suitable systems for each application. The areas discussed include lighting, start-up power, transportation, mechanical utilities, heating, refrigeration, and production.