Coal combustion products (CCPs), also called coal combustion wastes (CCWs) or coal combustion residuals (CCRs), are byproducts of burning coal. They are categorized in four groups, each based on physical and chemical forms derived from coal combustion methods and emission controls:
HINT:
In this Dossier
Cement clinker in the context of Cement kiln
Cement kilns are mechanical, industrial furnace used for the pyroprocessing stage of manufacture of portland and other types of hydraulic cement. The kilns use high heat to cook calcium carbonate with silica-bearing minerals to create the more reactive mixture of calcium silicates, called clinker, which is ground into a fine powder that is the main component of cements and concretes.
Kilns are relatively distributed technologies all over the world: over a billion tonnes of cement are made per year, and cement kiln capacity defines the capacity of the cement plants. The kilns is an integrated part of the cement plant, connected by a number of ancillary pieces of equipment, used to engineer an ideal flow of cement to the rest of the system. Improvement to kiln systems and ancillary equipment, such as heat recovery, can improve the efficiency kilns and reduce the cost of overall operation of a cement plan.
View the full Wikipedia page for Cement kiln