现场测试的创新:可持续地利用二次渣用于闪光设置添加剂的生产
Chao Chen1, Dahai Yan1, Xiaoyuan Li1
1State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
Journal of environmental management
|April 16, 2024
概括
二次渣 (SAD) 可以取代石在闪光设置添加剂 (FSA) 生产中. 环境风险最小,危险成分得到有效管理,为SAD提供可持续的处置解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 二次渣 (SAD) 是一种潜在的石替代剂,可以替代喷混凝土中的闪光置添加剂 (FSA).
- 在SAD中的危险成分限制了其广泛的工业应用.
- 冲混凝土添加剂在建筑中对于快速结应用至关重要.
研究的目的:
- 评估使用SAD作为FSA生产的主要原料的可行性.
- 评估与FSA制造中SAD使用相关的环境风险.
- 在工艺过程中确定危险元件的分布和固定.
主要方法:
- 实地测试是在闪光设置混合物工厂进行的.
- SAD 的化学特性与石进行了比较.
- 监测了排放 (化物,重金属,二氧化物).
- 在飞灰和FSA中分析了危险成分的分布.
- 评估了重金属和化物的泄漏风险.
主要成果:
- 在FSA生产中,SAD有效地取代了石,而没有降低质量.
- 生产排放量符合中国的环境标准.
- 超过50%的挥发性成分 (Cl,Cd,Pb,Zn) 积聚在飞灰中.
- 超过95%的低挥发性成分 (Cu,Cr,Mn,F) 转移到FSA.
- 碳酸 (CaCO3) 在FSA中有效地固定了化物 (F).
- 在FSA中重金属和化物的泄漏风险仍然是最小的和可以接受的.
结论:
- 在FSA生产中,SAD是一种可行的,高质量的石替代品.
- 制造过程有效地管理危险元件,符合环境法规.
- 该技术为二次渣的处置提供了一种环保的方法.
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