Cement and Energy

• Eventually, a method was found to operate the kiln and feed the mineraliser components without risking blackings. Today , most cement sold in Denmark is made from mineralised clinker. New Plant Design One question that will be asked is "Will conversion from standard to mineralised clinker require modifications to plant design? In fact when a standard cement plant converts from normal production to mineralised cement, only a few design modifications will have to be made. They will mostly be concentrated on the handling equipment and feed systems for the mineraliser components. If the mineralising minerals are fluorspar and natural gypsum a small grinding installation is often needed. A feed s ilo and a feed and transportation system might in some cases be necessary for each component. In other cases, combined grinding of the components in the raw mill will be sufficient. Conclusion The combination of mineralised cement, new cl inker grinding method and blended cements with fine filler materials means a drastic cut in energy consumption. This in tum contri butes to a cleaner cement industry with lower emissions of NOx and C0 2 and enables the use of secondary raw materials and fuels as well as the recycl ing of certain waste materials. These developments represent a major step in making cement as an even more ecologically attractive construction material. [Courtesy: International Cement Review, June /996} FORTHCOMING EVENTS • First International Symposium on Cement Industry 8-10 November 1997 Organised by Contact Assiut University & Assiut Cement Company, in cooperation with Arab Union for Cement and Building Materials Prof. Dr. Kamal A. Idriss Head of Chemistry Department Faculty of Science, Assiut University Assiut - 715 16 Egypt. • 3rd India International Refractory Congress (ffiEFCON - 98), Calcutta • 11-13 February 1998 (tentative) Organised by Indian Ceramic Society Indian Refractory Makers Association and Indian Institute of Metals. Sixth NCB International Seminar on Cement and Building Materials 24- 27 November 1998 Organising Secretary National Council for Cement and Building Materials P-2 1 South Extn . Part II, New Delhi - 110 049. India Te l : 9 1- 11 -64401 33 Fax 9 1- 11 -6468868 13