CEE Jul-Sep-2012

• • .. - Each cross-bar piece is installed with tow wedges and pins and fully accessible from the over grate area and can be hand carried. The air distribution plate is two-piece design with the upper part removable and fully accessible from the over grate. Crusher A standard at the outlet of the cooler, a heavy– duty roll breaker with modular frame design (HRB MF) efficiently breaks up the largest of lumps with its patented lower crushing roll arrangement and with minimal dust generation and noise. "The cooler has very few wear parts for easy and economical maintenance." ABC inlet ABC (Air Blast Controlled) fixed inlet gives an optimum start to the cooling process with a uniform clinker distribution, also eliminate the formation of "snowman". Through an internal check valve arrangement, high pressure air blaster air is allowed to eject through each and every gate plate to ensure there is no way for bui ld-up and uneven distribution to occur the inlet. Mechanical flow regulators for the normal cooling air, just li ke in the rest of the Cross-bar cooler, are still also maintained for every grate plate. Full flexibility in control of blasting area, blasting frequency and blasting intensity So that specific problem areas can be targetted . Retrofit possibilities With its modular design, the FL Smidth Cross– Bar Cooler is flexible enough to enable complete or partial upgrades of most existing clinker coolers. Capitol retrofit case story Capitol and FL Smidth have enjoyed a very close relationship, with virtually their entire San Antonio dry process plant run on FL Smidth equipment its start up more than 25 years ago. Despite their existing controlled flow grate cooler performing well, Capitol wanted to be prepared for a rebounding cement market once the recession loosened its grip in the US. So the FL Smidth Cross-Bar cooler was a natural first step towards greater capacity, while furthermore providing additional benefits such as higher thermal efficiency and lower maintenance. Within much of the existing casing, new cross-bar units were installed creating an eight-grate wide cooler rated for 2000t/d. The cooler has now been in operation for over 11/2 year and is in fact performing exceptionally well. There have been no unplanned kiln outage to date since the start-up, and the preliminary operational results are impressive with 20 per cent reduction in both standard cooler loss and fan power consumpti on. FL Smidth's innovative and technological leadership is again demonstrated with the introduction of the new FL Smidth Cross-Bar cooler that seamlessly integrated into rest of the pyroprocess. Courtesy: Indian Cement Review, June 2012, Pp 46-48. 20 1-