Single large roller mill feeds today's jumbo cement plants

The use of a single roller mill to supply kiln feed has always been the most economical approach to new cement plant construction. However, the ability to design and build mills large enough to supply today's 7500+ tons per day cement kilns has sometimes been questioned. The successful start up and operation of the 5.9-m roller mill at P.T. Semen Gresik's Tuban plant, Indonesia, has proven that reliable mills can be built for this application. Years of experience, together with modern computer-aided design techniques, has been the key to opening up the future for large roller mills. Here, the design capabilities needed to successfully produce large mills, as well as the operational features of modern roller mills, are discussed.