Limestone Calcination Plant

limestone (CaCO₃) undergoes external heating in a stainless steel (310s) kiln, leading to the thermal decomposition of CaCO₃ into high-purity CaO and CO₂. This method not only ensures the production of high-quality CaO but also effectively captures CO₂. The captured CO₂ can be used for carbon capture and storage (CCS) and carbon capture and utilization (CCU).High-purity CaO
The high-purity calcium oxide produced by indirect rotary kilns is characterized by its high purity and stable quality, making it widely applicable in the food, medical, and electronic materials industries. In contrast, traditional direct-fired lime kilns produce CaO with lower purity due to direct contact between the heat source and the material. This method also has lower thermal efficiency and results in higher CO₂ emissions for the same amount of CaO produced, contributing to the greenhouse effect and global warming.
Indirect heated rotary kilns efficiently utilize thermal energy and maximize the use and collection of all resources, enabling environmentally friendly production and significant reduction in carbon emissions. This approach reduces greenhouse gas emissions, helps combat global climate change, and promotes green sustainable development.