Cement and Energy

The various upgradation/ modernisation of equipment/machinery carried out in different sections of the plant are given in the Table - 1. 1988-89 1990-91 1990-91 1990-91 1990-91 1991-92 1991-92 1992-93 1993-94 1994-95 Table-t : MODERNISATION OF FACILITIES IN VARIOUS SECTIONS OF THE PLANT Modernisation of facilities Specific Power Modernisation of facilities Specific Power saving saving Kwhff Cement Kwhff Cement Installation ofhigh efficiency 2.5- 3.0 1994-95 Incorporation ofon line auto bulk - sepax dynamic separator in sampler(designed and fabricated cement grinding forconverting by SCL engineers) before limestone the mill to close circuit - Cement Mill. stock pile, which had resulted in reduced variation in CC upto ± 5%. Installation ofhigh efficiency 3.0 1994-95 Replacement ofconventional twin 1.50 dynamic seperator in Raw mill. cyclones of first stage of preheater Modification in calciner by 1.2- 2.0 by indigenously designed LP twin cyclones. increasing its height 1995-96 Installation ofexternal material 0.5-0.75 Replacement of pneumatic 3.0- 4.0 recirculation system across conveying of cement by vertical Roller Mill mechanical conveying (Belt 1995-96 On-line blending control for rawmill conveyor and bucket elevator). - Installation ofhigh efficiency 1.0 1995-96 a) Retrofitting of IKN-KIDS systemof 0.50 dynamic separator in coal mill plates in the part of Ist compartment ofgrate cooler. Installation ofSPRS for speed 2.0 b) Replacement ofmulti cyclones by included control ofraw mill fan electrostatic precipitator for in (a) collection ofclinker dust from Installation ofcoal stacker for - cooler exhaust air. stacking and blending the raw coal which had reduced variation c) Replacement ofcooler fans by high - in coal quality to ±5% in coal ash efficiency fans included and (designed and fabricated by SCL team). replacement ofbutterfly damper by radial vane in (a) type dampers. a) Replacement of pneumatic 1.75-2.0 1995-96 lnstallationofComputer aided mine conveying ofraw meal for - feeding to the kiln by planning system for optimum utilisation mechanical bucket elevator. of limestone deposit. 1996-97 lnstallation ofa booster fan in parallel - b) Installation ofSPRS for 1.50 withexisting preheater fan. speed control ofpreheater fan 1996-97 a) Increasing mill vent volume and - Installation ofexpert systemfor - dust collector area. Kiln, Cooler and cement mill b) Replacement ofblind liners of - Replacement ofpneumatic 2.00 Combidan diaphragm by slotted liners system oftransporting rawmeal for increasing diaphragm opening area to CF silo by bucket elevator. from 1.388 to 1. 713 M2 and optimisation ofgrinding media loading· in each chamber ofcement mill. ·' ··.;. .. ,· -t ·-:::·~, ,··, · .. i