The industrial process of heating at high temperature in rotary kilns, which is essential in cement manufacture, creates favorable conditions to use wastes as alternative fuels. Careful controls of plant operations, composition of the waste and emissions are necessary in order to ensure a good quality of the final product (cement). Therefore, only certain types of waste can be considered as fossil substitute. The materials frequently used for this purpose are the following: meat and bone meal (MBM), solvents, used oils, waste tyres, sewage sludge, plastics, etc [1-3].
展开▼
