HOT KILN SURVEY Minerals-Pyro The HOT KILN SURVEY is a comprehensive, cost-effective approach to maintaining refractory life; improving mechanical reliability and establishing a base for a proactive maintenance program. With a detailed analysis of kiln conditions, plant personnel can make informed decisions for maintenance and operation of their kiln. Field engineer checks ovality beam after positioning on shell the previous revolution. KILN SHELL RUNOUT measurements obtained with laser technology, locate and identify permanent shell deformation conditions, such as, doglegs, out-of-round, etc. These measurements also define the straightness of the shell center line. Riding ring creep on the shell is also measured and analyzed. KILN MECHANICAL INSPECTION includes a shell temperature profile to compare with refractory history and operating practices. Thrust conditions and ring/roller contact are checked at each pier. Gear and pinion conditions are evaluated for vibration, temperature, alignment and proper lubrication. Upon completion of these tasks, all data is analyzed together, resulting in near and long term recommendations; to improve mechanical and operational kiln performance. ▲ RELIABILITY OEM experienced field engineers ACCURACY OEM drawings and technical data VALUE Complete information at competitive cost Field engineer gathers shell runout and temperature measurements. by Metso Metso Hot Kiln Surveys are conducted under normal kiln operating conditions and combine three major tasks: KILN SHELL OVALITY measurements identify excessive elastic shell deformation in the riding ring area, which can have adverse effects on refractory life and kiln shell integrity. Ovality measurements are typically taken on both sides of each riding ring. Experienced analysis of ovality data can indicate causes of problems; i.e., excessive riding ring/filler bar clearance, severe kiln shell misalignment, etc. The analysis leads to corrective/preventative recommendations; which when implemented, increases operational efficiency of the kiln.

HOT KILN SURVEY Ovality studies indicate type of loads on the support piers and provide a pictorial representation of the kiln alignment. Ovality analysis does not determine the exact amount of kiln misalignment; nor is it a substitute for a kiln alignment. It will provide indications of a serious misalignment, requiring a roller move of 1/4” and larger, which can be made during operation. This allows time for a shutdown t o b e s c h e d u l e d ; w h e n a c c u r a t e measurements of the riding rings, support rollers and base frame center lines can be done, restoring the kiln to design specifications....