Cement mill system upgrade

The following case study examines a range of existing techniques available which have been applied over the past 15 years at the Arizona Portland Cement plant on three different grinding systems. Four modifications to these existing systems were completed during this time, and two more modifications are planned. Planning for future needs has allowed the maximized use of existing equipment, while increasing both the quality and quantity of finished product to meet the requirements of today and tomorrow. With possible modifications planned in the future, the finish grinding capacity of these three systems will have been increased from approximately 74 mtph to 300 mtph through additions to, and the upgrading of, existing equipment. While the capacity increased by 300%, the specific power requirement decreased by 20%. This value is for the major pieces of equipment only, based-mainly on full use of installed power.