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| Process Optimization and Quality Control in the Production of Cement Clinker for Nuclear Power Plants |
| Chaoyang Shanshui Dongxin Cement Co., Ltd. , Chaoyang Liaoning 122633, China |
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Abstract According to the high technical index requirements of nuclear power cement (C3S content ≤50%, C3A content ≤3%, f-CaO content ≤1.0%), optimization and improvement have been carried out in terms of raw material selection(preferring pure silicon-based, pure aluminum-based, and pure iron-based materials), batching scheme design (KH=0.86±0.02, SM=2.8±0.1, AM=0.8±0.1), optimization of rotary kiln calcination process (e.g., reducing feed rate and kiln speed, increasing calcination temperature inside the kiln.), and adjustments in production process control(e.g., stabilizing the temperature of the pre-calciner, controlling sample testing and frequency , maintaining low level of the raw material homogenization silo). Based on the above optimization and improvement measures, four-component batching and an online analyzer were adopted to control the batching. The stability of the three rate values of nuclear power cement clinker was enhanced, and the heat of hydration and strength all met the technical index requirements of nuclear power cement. The production and preparation process of nuclear power cement clinker provides a reference for the research and development of special cement and helps cement enterprises transform towards the production of diversified cement products.
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Received: 21 January 2025
Published: 22 September 2025
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