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Abstract Cement industry is facing severe pressure of the emission reduction in the context of the “dual carbon” target. Yet, the environmental impact caused by cement production is often positively related to the performance of cement. In order to explore the method of cement production with low environmental impact and high performance, Life Cycle Assessment (LCA) was used to quantify the environmental impact of the whole cement production process. Based on the environmental assessment results, DOE technology was introduced to analyze the influence of different process parameters combination on CO2 emission and compressive strength during the stage of clinker calcination. The results indicate that the CO2 emission is significantly influenced by the limestone ratio and the calcination temperature. And the limestone ratio, the raw meal fineness and the rotary kiln speed significantly affect the compressive strength of the clinker. In addition, utilizing the response optimization, the optimum combination of factors for minimizing CO2 emission and maximizing 28 d compressive strength was found to be 70% for the limestone ratio, 12% for the raw meal fineness, 1 300 ℃ for the calcination temperature and 6 r/min for the rotary kiln speed, which resulted in the CO2 emission of 817.187 kg/t.cl and 28 d compressive strength of 50.40 MPa. The research results can provide reference for the research on the comprehensive optimization for the environmental impact and performance of cement.
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Published: 03 March 2025
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2025, Vol. 0 
