2023 Volume 34 Issue 2 Pages 116-124
In the manufacturing of cement, various industrial wastes are used as raw materials and as fuels for recycling resources and reducing greenhouse gas emissions. The thermal energy of industrial waste is used as an alternative energy for the cement clinker burning process, and the ash is also being used as an alternative raw material. The cement industry uses a large amount of SRF, mainly fluffy plastic waste, RPF, waste tire chips, sewage sludge carbide, wood chips, etc. SRF has a high thermal energy potential and the use of SRF in the cement industry contributes notably to the reduction of CO2 emissions as it reduces the use of coal.
Since the effects of chlorine and other minor components in SRF cannot be ignored, the process is designed so that these components do not affect the cement manufacturing process or quality under appropriate control. Regarding CO2 emissions from the use of SRF (pulverized plastic waste) in cement manufacturing, the effect of reducing CO2 emissions using a calculation model based on the LCA method has been examined. The results confirm that the recycling of plastics waste has a reduction effect equivalent to about 10% of the CO2 emissions intensity of the entire cement manufacturing process.
