利用低等级的石灰岩和固体废物制备高等级的波特兰水泥
Jiapeng Duan1, Yu Zhang1, Suwei Xia1
1State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.
Materials (Basel, Switzerland)
|June 13, 2025
概括
这项研究成功地使用废物生产了高亮度的波特兰水泥块,显著减少了54.67%的二氧化碳排放. 这种创新方法利用低质量的石灰石和工业副产品来生产可持续的水泥.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 水泥行业是二氧化碳排放的主要来源.
- 工业固体废物的利用对于可持续发展至关重要.
- 低质量的石灰石对传统的水泥生产构成了挑战.
研究的目的:
- 使用低质量的石灰岩和固体废物 (碳化渣和钢渣) 制备高质量的波特兰水泥.
- 为了研究物理化学反应过程,阶段组成和的微观结构.
- 与普通波特兰水泥相比,评估二氧化碳减排潜力.
主要方法:
- 使用特定的原材料成分制备高质量的波特兰水泥.
- 使用X射线衍射 (XRD),热重力测量分析 (TGA) 和差分扫描热度计 (DSC) 的分析.
- 显微镜检查以研究克林克微观结构和相位分布.
主要成果:
- 在1340°C下1小时成功生产高质量波特兰水泥.
- 达到58.6%的贝莱特 (C2S) 含量和24.2%的阿里特 (C3S) 含量.
- 高反应性α-C2S含量达到1.4%,C2S和C3S的相间分布发达.
- 与普通波特兰水泥块相比,碳排放量减少了54.67%.
结论:
- 高质量波特兰水泥料可以有效地从低质量的石灰岩和固体废物中生产.
- 这种方法实现了资源利用,并大大减少了水泥生产中的二氧化碳排放.
- 这些发现促进了水泥行业的创新和可持续方法.
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