Cement Energy and Environment

power consumption by state-or-art plants in the four countries and Japan. The data given below are collected from the respective cement industry associations. Energy Consumption Level by State-of-Art plants ( 1997 &. 1998) Energy Japan India Taiwan S. Korea Thailand Power k\Nh/t cement) 97.8 oo-s5 98-100 99- 100 103-105 Fuel (I<Gal/l<g dinker) 653 690 730 710 7ZO It should be mentioned here that there is a marginal difference in energy consumption between the state-of– art plants and the national average of Japan. However, in India, the present national average is 115 k\Ml/tonne cement for power consumption, and 815 kcal/kg of clinker for fuel consumption. There remains therefore a major task ahead for many of our plants to achieve significant energy efficiency. Awareds for energy conservation and other promotion<l1 activities for energy conservation are therefore very essential, both for the industry and the national econom,y, and they need to be enlarged. Acknowledgement The authors convey their sincere thanks to the management of the plants in India and abroad for permission to visit the plants and hold free and frank discussions. The financial support of USAID in the execution of the project is du ly acknowledged. Although best efforts have been made to ensure the correctness of the cited data, since some of the data have been gathered from discussions, any error or omission is unintentional and will be subject to correction. The purpose of this study has been performance enhancement in line with the "best practices" and the data and inferences should be tal<en in that light only. • Reclaimed limestone mines of the Hualien Plant of Asia Cement Corporation, Taiwan - Limestone is mined in benches from the lease- hold within a reserve forest and transported through a shaft and tunnel to the plant. Right - Reclaimed lease-hold part of quarry in reserve forest Left - The unleased part of the reserve forest under state supervision. 9