{"title":"含铬渣中不同cr尖晶石晶体的原位分离及结构表征","authors":"Xi Lan, Jintao Gao, Guoliang Feng, Zhancheng Guo","doi":"10.1007/s11837-025-07499-5","DOIUrl":null,"url":null,"abstract":"<div><p>Chromium (Cr)-bearing slag is a significant waste product associated with stainless steel production. Cr-spinel is a prominent Cr-bearing solidification phase in the slag, while the lack of basic data for Cr-spinel severely limits the sustainable utilization of Cr-bearing slag. In this study, the in situ separation of Fe-Cr/Mn-Cr/Mg-Cr-spinel crystals from the Cr-bearing slag was first conducted using super-gravity technology. The Cr<sub>2</sub>O<sub>3</sub> content in the separated slag phase diminished from 4.36% to 1.74%, while the recovery ratio of Cr surged from 53.71% to 80.91%. Subsequently, the structural characterization of various high-purity Cr-spinel crystals was performed through Rietveld refinement of XRD data to determine the basic lattice parameters of Cr-spinel crystals. Additionally, the leaching of Cr from various Cr-spinels was measured to compare their solidification capacity. The results indicated significant differences in the Cr immobilization effects among different Cr-spinels, with the order being MnCr<sub>1.93</sub>Al<sub>0.07</sub>O<sub>4</sub> < FeCr<sub>1.94</sub>Al<sub>0.06</sub>O<sub>4</sub> < MgCr<sub>1.89</sub>Al<sub>0.11</sub>O<sub>4</sub>. The findings of this research can serve as a theoretical foundation for the detoxification and utilization of Cr-bearing slag.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 8","pages":"5984 - 5992"},"PeriodicalIF":2.3000,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"In Situ Separation and Structural Characterization of Various Cr-Spinel Crystals from Cr-Bearing Slag\",\"authors\":\"Xi Lan, Jintao Gao, Guoliang Feng, Zhancheng Guo\",\"doi\":\"10.1007/s11837-025-07499-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Chromium (Cr)-bearing slag is a significant waste product associated with stainless steel production. Cr-spinel is a prominent Cr-bearing solidification phase in the slag, while the lack of basic data for Cr-spinel severely limits the sustainable utilization of Cr-bearing slag. In this study, the in situ separation of Fe-Cr/Mn-Cr/Mg-Cr-spinel crystals from the Cr-bearing slag was first conducted using super-gravity technology. The Cr<sub>2</sub>O<sub>3</sub> content in the separated slag phase diminished from 4.36% to 1.74%, while the recovery ratio of Cr surged from 53.71% to 80.91%. Subsequently, the structural characterization of various high-purity Cr-spinel crystals was performed through Rietveld refinement of XRD data to determine the basic lattice parameters of Cr-spinel crystals. Additionally, the leaching of Cr from various Cr-spinels was measured to compare their solidification capacity. The results indicated significant differences in the Cr immobilization effects among different Cr-spinels, with the order being MnCr<sub>1.93</sub>Al<sub>0.07</sub>O<sub>4</sub> < FeCr<sub>1.94</sub>Al<sub>0.06</sub>O<sub>4</sub> < MgCr<sub>1.89</sub>Al<sub>0.11</sub>O<sub>4</sub>. The findings of this research can serve as a theoretical foundation for the detoxification and utilization of Cr-bearing slag.</p></div>\",\"PeriodicalId\":605,\"journal\":{\"name\":\"JOM\",\"volume\":\"77 8\",\"pages\":\"5984 - 5992\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-06-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"JOM\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11837-025-07499-5\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"JOM","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11837-025-07499-5","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
In Situ Separation and Structural Characterization of Various Cr-Spinel Crystals from Cr-Bearing Slag
Chromium (Cr)-bearing slag is a significant waste product associated with stainless steel production. Cr-spinel is a prominent Cr-bearing solidification phase in the slag, while the lack of basic data for Cr-spinel severely limits the sustainable utilization of Cr-bearing slag. In this study, the in situ separation of Fe-Cr/Mn-Cr/Mg-Cr-spinel crystals from the Cr-bearing slag was first conducted using super-gravity technology. The Cr2O3 content in the separated slag phase diminished from 4.36% to 1.74%, while the recovery ratio of Cr surged from 53.71% to 80.91%. Subsequently, the structural characterization of various high-purity Cr-spinel crystals was performed through Rietveld refinement of XRD data to determine the basic lattice parameters of Cr-spinel crystals. Additionally, the leaching of Cr from various Cr-spinels was measured to compare their solidification capacity. The results indicated significant differences in the Cr immobilization effects among different Cr-spinels, with the order being MnCr1.93Al0.07O4 < FeCr1.94Al0.06O4 < MgCr1.89Al0.11O4. The findings of this research can serve as a theoretical foundation for the detoxification and utilization of Cr-bearing slag.
期刊介绍：
JOM is a technical journal devoted to exploring the many aspects of materials science and engineering. JOM reports scholarly work that explores the state-of-the-art processing, fabrication, design, and application of metals, ceramics, plastics, composites, and other materials. In pursuing this goal, JOM strives to balance the interests of the laboratory and the marketplace by reporting academic, industrial, and government-sponsored work from around the world.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
