Guoliang Feng, Jintao Gao, Xi Lan, Lei Guo, Zhancheng Guo
{"title":"钒渣中钒尖晶石与钛尖晶石的结晶分离","authors":"Guoliang Feng, Jintao Gao, Xi Lan, Lei Guo, Zhancheng Guo","doi":"10.1111/jace.20701","DOIUrl":null,"url":null,"abstract":"<p>Vanadium (V) and titanium (Ti) are widely used in high-performance ceramics due to their excellent magnetic, electrical, and chemical properties. Vanadium slag from the smelting of vanadium–titanium magnetite contains large amounts of V and Ti, which are enriched into spinel in the form of mutual replacement. However, the lack of research on the crystallization mechanism of V and Ti limits their respective recovery. In this study, the crystallization of V and Ti in vanadium slag with temperature was investigated, where V was primarily crystallized into V-spinel between 1773 and 1573 K, while Ti was mainly crystallized into Ti-spinel between 1573 and 1373 K. Afterward, the enhanced separations of V-spinel and Ti-spinel were realized by controlling the cooling rate using super-gravity in the corresponding temperature range, respectively. High-purity crystals of V-spinel with up to 42.68 wt.% V<sub>2</sub>O<sub>3</sub> and Ti-spinel containing up to 32.87 wt.% TiO<sub>2</sub> was obtained. On this basis, the crystallization mechanism of V and Ti was revealed by crystal characterization, and the results showed that the crystallization of Ti lagged behind that of V due to the lower crystal stability of Ti-spinel than that of V-spinel. This study provides a theoretical basis and methodological guidance for the efficient utilization of vanadium slag.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 9","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced separation of V-spinel and Ti-spinel in vanadium slag guided by crystallization mechanism\",\"authors\":\"Guoliang Feng, Jintao Gao, Xi Lan, Lei Guo, Zhancheng Guo\",\"doi\":\"10.1111/jace.20701\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Vanadium (V) and titanium (Ti) are widely used in high-performance ceramics due to their excellent magnetic, electrical, and chemical properties. Vanadium slag from the smelting of vanadium–titanium magnetite contains large amounts of V and Ti, which are enriched into spinel in the form of mutual replacement. However, the lack of research on the crystallization mechanism of V and Ti limits their respective recovery. In this study, the crystallization of V and Ti in vanadium slag with temperature was investigated, where V was primarily crystallized into V-spinel between 1773 and 1573 K, while Ti was mainly crystallized into Ti-spinel between 1573 and 1373 K. Afterward, the enhanced separations of V-spinel and Ti-spinel were realized by controlling the cooling rate using super-gravity in the corresponding temperature range, respectively. High-purity crystals of V-spinel with up to 42.68 wt.% V<sub>2</sub>O<sub>3</sub> and Ti-spinel containing up to 32.87 wt.% TiO<sub>2</sub> was obtained. On this basis, the crystallization mechanism of V and Ti was revealed by crystal characterization, and the results showed that the crystallization of Ti lagged behind that of V due to the lower crystal stability of Ti-spinel than that of V-spinel. This study provides a theoretical basis and methodological guidance for the efficient utilization of vanadium slag.</p>\",\"PeriodicalId\":200,\"journal\":{\"name\":\"Journal of the American Ceramic Society\",\"volume\":\"108 9\",\"pages\":\"\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2025-05-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the American Ceramic Society\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/jace.20701\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jace.20701","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Enhanced separation of V-spinel and Ti-spinel in vanadium slag guided by crystallization mechanism
Vanadium (V) and titanium (Ti) are widely used in high-performance ceramics due to their excellent magnetic, electrical, and chemical properties. Vanadium slag from the smelting of vanadium–titanium magnetite contains large amounts of V and Ti, which are enriched into spinel in the form of mutual replacement. However, the lack of research on the crystallization mechanism of V and Ti limits their respective recovery. In this study, the crystallization of V and Ti in vanadium slag with temperature was investigated, where V was primarily crystallized into V-spinel between 1773 and 1573 K, while Ti was mainly crystallized into Ti-spinel between 1573 and 1373 K. Afterward, the enhanced separations of V-spinel and Ti-spinel were realized by controlling the cooling rate using super-gravity in the corresponding temperature range, respectively. High-purity crystals of V-spinel with up to 42.68 wt.% V2O3 and Ti-spinel containing up to 32.87 wt.% TiO2 was obtained. On this basis, the crystallization mechanism of V and Ti was revealed by crystal characterization, and the results showed that the crystallization of Ti lagged behind that of V due to the lower crystal stability of Ti-spinel than that of V-spinel. This study provides a theoretical basis and methodological guidance for the efficient utilization of vanadium slag.
期刊介绍：
The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
Papers on fundamental ceramic and glass science are welcome including those in the following areas:
Enabling materials for grand challenges[...]
Materials design, selection, synthesis and processing methods[...]
Characterization of compositions, structures, defects, and properties along with new methods [...]
Mechanisms, Theory, Modeling, and Simulation[...]
JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
