Qu Yuxuan, Xing Lei, Gao Minglei, Zhao Suxing, Ren Qianqian, Li Lanjie, Long Yue
School of Metallurgy and Energy Engineering, North China University of Science and Technology, Tangshan 063000, China.
HBIS Material Technology Research Institute, Shijiazhuang 050023, China.
Materials (Basel). 2024 Dec 23;17(24):6291. doi: 10.3390/ma17246291.
The composition of TBFS is complex. It is categorized into low (W < 5%), medium (5% < W < 20%), and high-titanium slag (W > 20%) based on Ti content. The titanium in the slag is underutilized, causing it to accumulate and contribute to environmental pollution. Current methods for extracting titanium from TBFS include acid leaching, alkali fusion roasting, high-temperature carbonation-low-temperature chlorination, electrochemical molten salt electrolysis, and selective enrichment. However, these methods still face challenges such as environmental impact, high costs, low Ti recovery, and low Ti grade. This paper summarizes the mechanisms and characteristics of the above methods. Future research should focus on integrating pyrometallurgy with beneficiation processes, followed by further purification of titanium-rich phases through hydrometallurgy. Additionally, combining this with novel separation technologies (such as microwave and superconducting magnetic separation) will optimize the dissociation of titanium-bearing phases after enrichment.
钛高炉渣（TBFS）的成分复杂。根据钛含量，它可分为低钛（W<5%）、中钛（5%<W<20%）和高钛渣（W>20%）。炉渣中的钛未得到充分利用，导致其积累并造成环境污染。目前从TBFS中提取钛的方法包括酸浸、碱熔焙烧、高温碳酸化-低温氯化、电化学熔盐电解和选择性富集。然而，这些方法仍然面临着环境影响、成本高、钛回收率低和钛品位低等挑战。本文总结了上述方法的机理和特点。未来的研究应侧重于将火法冶金与选矿工艺相结合，然后通过湿法冶金进一步提纯富钛相。此外，将其与新型分离技术（如微波和超导磁选）相结合，将优化富集后含钛相的解离。
