What kiln fuels do other cement plants around the world use?
A. Coal is the primary fuel used. Other fuel sources used are tires, oil, petroleum coke and waste. Cement plants are the best facilities to use coal because of the high temperature process, the long retention time in the kiln, and the scrubbing action in the manufacturing process. This means that waste products are not generated because the products of combustion are retained in the cement clinker. Other industries using coal produce waste ash during their process. Cement plants use the waste ash – fly ash and bottom ash – in the manufacturing because they contain the chemical properties needed to make a good cement product.
