Cement Energy and Environment

\ Optimise the extraction and distribution of air in continuous-flow silo for kiln feed; this will considerably reduce the power consumption on blower. :-- Install reject handling system and mechanical recirculation system in VRM and cement grinding. ,..... Provide pneumatic seal for kiln inlet and spring loaded mechanical seal for kiln outlet for reducing kiln air leakages. -;.... Limit the number of poking holes, flanges and inspection doors so as to reduce false air ingress into the system. :.- Introduce high-efficiency separator, internals for ball mill, such as liner plates and grinding media, in addition to closed circuit pre-grinding with roller press , and cut down power consumption in cement grinding. ,..... Provide dedicated compressors for bag filters; this can significantly reduce the system's requirement of compressed air. ::.-- Rationalise the deployment of various motors, swapping as necessary, on reassessment of the characteristics of the process in question. (Motor suppliers' help can be taken in this regard). - Install frequency converter for pumps and compressors. ::;... Periodic sharing of individual units' successes in energy savings is desirable to help other units emulate them. Draw up short-term and long-term energy management system designs (modification schemes) for energy conservation and process optimisation. Have a fresh look at duct planning. transfer points. material conveying system and air leakage in pyroprocess, and compressed air requirement for cutting down energy waste. Study the proven benefits from installation of expert systems, such as Ramco, Fuzzy Logic, SCAr for kiln operation for their eventual incorporation on revenue sharing basis. ,_ Explore the possibility/feasibility of installing Auto Power Management System to facilitate automatic islanding of grid power, dynamic load shedding and real-time power management. Characterise the available cementitious materials, such as fly ash, slag and rice husk ash and optimise their use, subject to their compatibility with the cement clinkers produced by the member plants. > Initiate time-bound action plan for popularising blended cements for better utilisation of scarce natural resources. ;;.... Approach government for reviewing the policy of levying charges on captive power generation and consider providing incentives, e.g. lower taxes for the production of blended cements. ;.... Vigorously pursue with the government for making the use of blended cements compulsory in all government/public sector construction works. ISO 14000 ACCREDITATION Of CEMENT PLANTS , - THE CURRENT TALLY S ide by side with producing cements of various kinds and grades, meeting world standards, Indian cement industry has been conscious of the value of accreditation of its Quality Management and Environmental Management Systems. Accordingly, an increasing number of cement plants in the country are going in for Certification under the ISO 9000 and the ISO 14000 series of standards, respectively for Qual ity Management and Environmental Management 19 Systems. These accreditations have been awarded by internationally recognised agencies. ISO 14000 certification for Environmen tal Management Systems (EMS) represents a mechanism by which cement companies acquire the label of environmentally sound enterprises and also derive the benefits of improved performance. It is worth mentioning that the EMS does not lay down specific