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Preparation of Ti-enriched slag from V-bearing titanomagnetite by two-stage hydrochloric acid leaching route
Alternative TitleSep. Purif. Technol.
Zhong, Binnian1,2; Xue, Tianyan1; Zhao, Longsheng1; Zhao, Hongxin1; Qi, Tao1; Chen, Weiliang2
2014-11-24
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume137Issue:NOV.Pages:59-65
AbstractLow-grade, highly reactive V-Ti concentrate was obtained from V-bearing titanomagnetite via selective reduction-magnetic separation. The main phases of the concentrate are anosovite and pyroxene. Two-stage acid leaching was employed to remove the impurities in the concentrate. The leaching behavior of impurities Ca/Mg/Al/Si under different acid leaching conditions in the first stage was investigated in detail. The optimal leaching conditions of the first-stage were as follows: 383 K leaching temperature, 1.40 mol/L HCl concentration, 1/10 solid-liquid mass ratio, and 120 min leaching time, under which the residue obtained contained 79.54% of TiO2 and 2.50% of V2O5. The result of molecular structure simulation indicate that the Ti-O and Mg-O bonds in the anosovite phase are broken under oxygen pressure conditions in the second stage by reacted with HCl solution. The content of TiO2 in the Ti-enriched slag prepared by two-stage acid leaching can reach 92.5% with further removal of residual carbon. (C) 2014 Elsevier B.V. All rights reserved.; Low-grade, highly reactive V-Ti concentrate was obtained from V-bearing titanomagnetite via selective reduction-magnetic separation. The main phases of the concentrate are anosovite and pyroxene. Two-stage acid leaching was employed to remove the impurities in the concentrate. The leaching behavior of impurities Ca/Mg/Al/Si under different acid leaching conditions in the first stage was investigated in detail. The optimal leaching conditions of the first-stage were as follows: 383 K leaching temperature, 1.40 mol/L HCl concentration, 1/10 solid-liquid mass ratio, and 120 min leaching time, under which the residue obtained contained 79.54% of TiO2 and 2.50% of V2O5. The result of molecular structure simulation indicate that the Ti-O and Mg-O bonds in the anosovite phase are broken under oxygen pressure conditions in the second stage by reacted with HCl solution. The content of TiO2 in the Ti-enriched slag prepared by two-stage acid leaching can reach 92.5% with further removal of residual carbon. (C) 2014 Elsevier B.V. All rights reserved.
KeywordV-ti Concentrate Hydrochloric Acid Leaching Molecular Simulation Impurity Separation Ti-enriched Slag
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.seppur.2014.09.021
URL查看原文
Indexed BySCI
Language英语
WOS KeywordTITANIUM-DIOXIDE ; ILMENITE
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000345181500008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11905
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Kunming Univ Sci & Technol, Fac Met & Energy Engn, Natl Engn Lab Vacuum Met, Kunming 650093, Peoples R China
Recommended Citation
GB/T 7714
Zhong, Binnian,Xue, Tianyan,Zhao, Longsheng,et al. Preparation of Ti-enriched slag from V-bearing titanomagnetite by two-stage hydrochloric acid leaching route[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2014,137(NOV.):59-65.
APA Zhong, Binnian,Xue, Tianyan,Zhao, Longsheng,Zhao, Hongxin,Qi, Tao,&Chen, Weiliang.(2014).Preparation of Ti-enriched slag from V-bearing titanomagnetite by two-stage hydrochloric acid leaching route.SEPARATION AND PURIFICATION TECHNOLOGY,137(NOV.),59-65.
MLA Zhong, Binnian,et al."Preparation of Ti-enriched slag from V-bearing titanomagnetite by two-stage hydrochloric acid leaching route".SEPARATION AND PURIFICATION TECHNOLOGY 137.NOV.(2014):59-65.
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