A cement plant consists of many different machines and most of them are not interested for the refractory point of view. However, the kiln, the preheating system and the cooler operate in a very high temperature range and therefore are lined with refractories. The lining protects the steel construction against heat, abrasion and chemical attack, and is a key parameter in the design and maintenance of the equipment. Na'aman high quality materials at the proper areas, could enlarge the lining life time, shorten maintenance shut down time and save operations costs.