Preparation of Ti-enriched slag from V-bearing titanomagnetite by two-stage hydrochloric acid leaching route

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	Preparation of Ti-enriched slag from V-bearing titanomagnetite by two-stage hydrochloric acid leaching route
	Zhong, Binnian 1,2; Xue, Tianyan 1; Zhao, Longsheng 1; Zhao, Hongxin 1; Qi, Tao 1; Chen, Weiliang 2
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2014-11-24
卷号	137 期号:NOV.页码:59-65
关键词	V-Ti concentrate Hydrochloric acid leaching Molecular simulation Impurity separation Ti-enriched slag
ISSN号	1383-5866
其他题名	Sep. Purif. Technol.
中文摘要	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.
英文摘要	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.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	TITANIUM-DIOXIDE ; ILMENITE
收录类别	SCI
原文出处	://WOS:000345181500008
语种	英语
WOS记录号	WOS:000345181500008
公开日期	2015-04-01
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/11905]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.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
推荐引用方式 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.