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Technology verification of Portland cement clinker production driven by concentrated solar energy directly

Author

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  • Wang, Yan
  • Wang, Zhifeng
  • Lei, Dongqiang
  • Zang, Chuncheng
  • Guo, Dong

Abstract

Fuel substitution is an important measure for heat substitution and carbon emissions reduction in cement production by using low-carbon fuels such as solid waste, natural gas, biomass energy and solar energy. In this study, a technology that uses concentrated solar energy to directly drive solar cement clinker production is proposed and its feasibility is experimental demonstrated. The results showed that cement clinker could be burned using concentrated solar energy. Because the sintering rate is rapid, rapid burning and/or under-burning also occurs during the sintering process, which causes the clinker structure exhibit a sheet structure. The chemical composition analysis showed that the total mass fraction of dicalcium silicate (C2S) and tricalcium silicate (C3S) exceeded 70 %, the mass fraction of f-CaO was higher than the standard value (≤1.5 %). Controlling the sintering temperature and time, and increasing the cooling rate are significant factors in ensuring the quality of the cement clinker.

Suggested Citation

  • Wang, Yan & Wang, Zhifeng & Lei, Dongqiang & Zang, Chuncheng & Guo, Dong, 2024. "Technology verification of Portland cement clinker production driven by concentrated solar energy directly," Renewable Energy, Elsevier, vol. 232(C).
    • Handle: RePEc:eee:renene:v:232:y:2024:i:c:s0960148124011327
    DOI: 10.1016/j.renene.2024.121064
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