Cement and Energy

SOME SUCCESS STORIES OF RECIPIENT OF ENERGY AWARDS Gujarat Ambuja Cement Ltd., Kodinar (Recipient of 13cst Energy Performance Award for 1991-92) A dry process plant having an installed capacity or7 .0* lakh tonnes per annum in 1991- 92. The plant is equipped with a rotary kiln wi l11 5-stage preheater ancl Prepol e<llciner wi t11a rated capacity of2200 tpd. * Pr~.:s~.:nt capacity is 10.0 1:1klltonncs. Energy Conservation Measures Adopted by the Plant Electrical Energy Thermal Energy • Conversion or open ci rcuit grinding into close • Control of false air in circuit g1inding in cemcm mill • Provision of speed variation in high cfticiency fans • Repl acement of low efficiency fans by high efficiency fans pyroprocessing • Optimisation of primary air quantity in kiln • Replacement of multi-cyclone separator by • electrostatic precipitator for cooler exhaust gases Improving running hours of kiln by reducing its stoppages • Installation of vari able speed fluid coupling for bag house reverse air f an • Prevention or idle running of equipmcnts • Increase in kiln productivity • Reduction of lighting load of tllc plant and colony • Optimisation of raw mix • Installation or smaller primary air ran • Replacement of pneumatic screw type conveying system by mechanical conveying system for transportal ion of dust design and improvement in its burnability by using mineraliscr • Replacement of pneumatic conveying system by • Use of QCX - System to bucket elevators for cement silo feeding design and conu·ol most • Replacement of cooler fans by high efficiency sui table and energy el'ficiem fans raw mi x