红色泥的利用:通过基于新组合烤工艺的增强分离来回收铁和
Teng Zhang1, Jingmin Yan1, Zhengchen Li2
1State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Beijing, 100049, China.
Journal of environmental management
|February 26, 2025
概括
红色泥 (RM) 的利用是通过苏打水和磁化烤工艺的结合来提高的. 这种方法可以回收有价值的铁缩物和高纯度制品,解决废物处理的挑战.
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:
- 红泥 (RM) 是生产的主要固体废物,在中国有大量库存.
- 低利用率的RM加剧土地和环境负担.
- 有效的RM利用对于可持续的工业实践至关重要.
研究的目的:
- 开发一种联合烤工艺,用于同时升级铁度和从红泥中回收.
- 研究RM矿物的转化为磁铁和可溶性酸盐.
- 提供理论支持,以全面利用铁和在RM.
主要方法:
- 采用了一种混合烤工艺,包括苏打烤和中温磁化烤.
- 进行了非异热运动分析和相位演变研究.
- 对过程参数进行了优化,以达到预期的结果.
主要成果:
- 获得了一种含有63.84%总铁和93.47%重量铁回收的铁缩物.
- 这样可以获得一种高纯度的产品,度为99.49%的Al2O3.
- 确定了四种铁缩升级的途径,降低度.
结论:
- 结合烤过程有效地提升了铁度,并从红泥中回收了.
- 优化的参数产生高质量的铁和产品.
- 该研究为全面利用红泥提供了可行的解决方案,减轻了环境问题.
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