Production manager, Blue Circle Industries, Ltd., Westbury Works, Westbury, Wiltshire
General manager, Engineering and Process Division, Blue Circle Industries, Ltd., Gravesend, Kent
Manager, Experimental Plant and Product Department, Blue Circle Industries, Ltd., Barnstone,
For more than half a century combustible materials have been used to a limited extent to substitute partially for coal, oil, or gas as the main fuel for cement manufacture, and the continuing increase in price of the conventional fuels is increasing the incentive to do this wherever it is technically practicable and economic. This paper discusses and quantifies the theoretical aspects of this topic, particularly the influence of the properties, continuity of supply, delivered cost and processing cost of possible alternative fuels, the tolerance of the cement-making process according to the type of process and raw materials and cement product quality requirements. Guidelines are developed and are illustrated by reference to the results of research and development and pilot plant work and practical experiences of a number of full-scale applications including a large and novel plant and system for consuming domestic refuse (municipal garbage) in a cement works.
Paper ID: CCA10248J