在砂中回收热失活的石棉水泥:一个可能的途径,以快速解决"石棉问题"

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Updated: Jul 1, 2025

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Published on: February 21, 2017

12.4K

Giancarlo Capitani¹, Michele Dalpiaz², Fabrizio Vergani¹

¹Department of Earth and Environmental Sciences, University of Milan-Bicocca, Italy.

Journal of environmental management

|March 8, 2024

概括

这项研究提出了一种可持续的方法来排毒和回收石棉水泥板块,创造一个安全的建筑材料. 回收的石棉产品可以纳入砂,为全球石棉问题提供解决方案.

科学领域:

材料科学材料科学材料科学
环境工程环境工程
建筑技术建筑技术建筑技术

背景情况:

由于石棉在建筑物中普遍存在,它仍然是人类健康的重大危害.
目前对石棉的法律缓解策略是不够的.
需要一种可持续的排毒和回收方法来解决石棉问题.

研究的目的:

开发一个可持续的能源排毒和回收过程,用于石棉-水泥板.
评估在砂中再利用热消活的石棉产品用于石膏应用的可行性.
评估回收材料对砂性能的影响.

主要方法:

石棉水泥板经过了可持续的热失活化过程.
无活化石棉产品被纳入用于石膏应用的砂混合物中,其百分比不同 (高达7 wt%).
评估了砂的性能,包括水需求,可加工性 (厚度,粘度,扩展性) 和机械强度 (初始和老化后).

主要成果:

添加高达7%的失活石棉产品并没有显著改变水需求.
再循环材料的加入并没有对塑料砂混合物的厚度,粘度或扩散性产生负面影响.
观察到砂强度略有改善,老化后机械性能没有妥协.

结论:

石棉-水泥板的热消灭和回收利用提供了一种可持续的解决方案,以减轻石棉危害.
无活化石棉产品可以安全地被纳入用于石膏应用的砂中,而不会影响关键性能特征.
这种方法提供了一个可行的途径来解决全球的全球问题.
石棉问题石棉问题
并保护自然资源.

关键词:

石棉-水泥-石棉-水泥是一种循环经济是一个循环经济.砂:一个砂.回收回收是回收的方法.热性停机方式热性停机方式

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