Department of Ferrous Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Environ Sci Pollut Res Int. 2021 Sep;28(36):49383-49409. doi: 10.1007/s11356-021-15254-x. Epub 2021 Jul 31.
Mineral carbonation can simultaneously realize the effective treatment of CO and iron and steel slag; thus, it is of great significance for the low carbon and sustainable development of iron and steel industry. In this article, the researches of mineral carbonation process using iron and steel slag as feedstock are reviewed, and the carbonation reaction mechanism and the parameters affecting the reaction rate and carbonation degree are analyzed. Furthermore, the effect of different enforcement approaches, such as ultrasonic enhancement, mixed calcination, microbial enhancement, and cyclic coprocessing on mineral carbonation reaction, is introduced. The additional effects of mineral carbonation, such as solving the problem of poor volume stability of steel slag, weakening the leaching of heavy metal ions, and reducing the pH of the leachate, are also illustrated. Moreover, issues related to mineral carbonation technology that should be emphasized upon soon, such as the production of valuable products, use of industrial wastewater, aqueous phase recycling use, multiparameter coupling analysis, and research on the properties of carbonation residues, are also discussed, which contribute some perspectives to the future development of mineral carbonation of iron and steel slag.
矿物碳化可以同时实现 CO 的有效处理和钢铁渣的有效利用，因此对于钢铁工业的低碳和可持续发展具有重要意义。本文综述了利用钢铁渣作为原料进行矿物碳化的研究，分析了碳化反应机理和影响反应速率和碳化度的参数。此外，还介绍了不同强化方法（如超声强化、混合煅烧、微生物强化和循环共处理）对矿物碳化反应的影响。还说明了矿物碳化的附加效果，如解决钢渣体积稳定性差的问题、减弱重金属离子的浸出以及降低浸出液的 pH 值。此外，还讨论了与矿物碳化技术相关的问题，例如有价值产品的生产、工业废水的利用、水相的循环利用、多参数耦合分析以及碳化残留物性能的研究，为钢铁渣的矿物碳化未来发展提供了一些观点。
