通过在现场形成具有竞争力的基板,通过阻断罗石在角石上的异质结晶
Jiahui Wu1, Xu Yan2, Feiping Zhao2
1School of Metallurgy and Environment, Central South University, Changsha 410083, China.
Journal of environmental sciences (China)
|August 24, 2024
概括
一种新的方法使用具有竞争力的基板来防止危险金属在固体废物中的封装. 这种方法可以抑制异质结晶,提高金属回收和废物处理效率.
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:
- 固体废物中的异质结晶会困住金属,使处理和回收复杂化.
- 在水金属学中常见的石废物,由于铁封装而带来了挑战.
研究的目的:
- 开发一种新的方法来抑制jarosite废物的异质结晶.
- 通过控制结晶过程来改善金属回收和减少废物量.
主要方法:
- 在jarosite沉过程中在现场形成竞争性基板 (schwertmannite).
- 对竞争基质的表征和对石结晶的影响的分析.
- 抑制机制的阐明,包括局部超和和溶解-再结晶.
主要成果:
- 在现场的施瓦特曼尼特基板有效地抑制了石在石上的结晶.
- 石上的铁含量从34.8%降至1.65%.
- 确定了一种涉及局部超和奥斯瓦尔德成熟的新机制,导致杂质减少和废物量减少.
结论:
- 开发的方法可以有效地控制固体废物的异质结晶.
- 该战略为从工业废物流中进行金属分离和回收提供了实用的见解.
- 这种方法最大限度地减少了杂质,并减少了总体废物量.
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