{"title":"Clean preparation of rutile from Ti-containing mixed molten slag by CO<sub>2</sub> oxidation","authors":"Jiqing Han, Qiuping Feng, Li Zhang","doi":"10.1515/gps-2023-0083","DOIUrl":null,"url":null,"abstract":"Abstract The effects of SiO2 and CO2 on the crystallization action of Ti-containing mixed molten slag (molten Ti-containing blast furnace slag and molten Ti slag) were discussed by thermodynamic calculation and specific experiments. The results of thermodynamic calculation indicated that the increase of SiO2 addition mass and CO2 oxidation time can promote the transformation of anosovite and sphene to rutile. The experiment results showed that the phase composition of modification slag was only rutile under the SiO2 addition mass of 110 g and the CO2 oxidation time of 180 s. Moreover, the formation theory of rutile was investigated. Using CO2 as an oxidizing gas can not only prepare rutile but also achieve carbon neutrality, which is a clean preparation method.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"99 1","pages":"0"},"PeriodicalIF":3.8000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Green Processing and Synthesis","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/gps-2023-0083","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Abstract The effects of SiO2 and CO2 on the crystallization action of Ti-containing mixed molten slag (molten Ti-containing blast furnace slag and molten Ti slag) were discussed by thermodynamic calculation and specific experiments. The results of thermodynamic calculation indicated that the increase of SiO2 addition mass and CO2 oxidation time can promote the transformation of anosovite and sphene to rutile. The experiment results showed that the phase composition of modification slag was only rutile under the SiO2 addition mass of 110 g and the CO2 oxidation time of 180 s. Moreover, the formation theory of rutile was investigated. Using CO2 as an oxidizing gas can not only prepare rutile but also achieve carbon neutrality, which is a clean preparation method.
期刊介绍：
Green Processing and Synthesis is a bimonthly, peer-reviewed journal that provides up-to-date research both on fundamental as well as applied aspects of innovative green process development and chemical synthesis, giving an appropriate share to industrial views. The contributions are cutting edge, high-impact, authoritative, and provide both pros and cons of potential technologies. Green Processing and Synthesis provides a platform for scientists and engineers, especially chemists and chemical engineers, but is also open for interdisciplinary research from other areas such as physics, materials science, or catalysis.
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