Recovery of TiO2-enriched material from vanadium titano-magnetite concentrates by partial carbon reduction and mild acid leaching

doi:10.1016/j.hydromet.2020.105324

	Recovery of TiO2-enriched material from vanadium titano-magnetite concentrates by partial carbon reduction and mild acid leaching
	Safdar, Faiza 2,3; Zhang, Ying 1,3; Zheng, Shili 3; Chen, Xing 3; Sun, Pei 4; Zhang, Yang 3; Li, Ping 3
刊名	HYDROMETALLURGY
	2020-05-01
卷号	193 页码:10
关键词	Vanadium titano-magnetite (VTM) Titanium dioxide Carbon reduction Acid leaching Enrichment
ISSN号	0304-386X
DOI	10.1016/j.hydromet.2020.105324
英文摘要	Vanadium-titano magnetite (VTM) is a typical resource in China. The typical method used to recover valuable elements from VTM concentrates is by the blast furnace smelting method. However, titanium is nearly all wasted in the form of blast furnace slag. A new pathway towards obtaining TiO2-enriched material for titanium extraction was designed in this study. The main means is the combination of partial carbon reduction and mild acid leaching. After reduction and leaching, most of the iron and other elements are transferred into solution, leaving a TiO2-enriched residue. Iron and vanadium are reclaimed from the leaching liquid later. In this study, the reduction and leaching parameters were optimized, which included reducing at 1000 degrees C for 3 h with a carbon addition of 6% by mass of VTM and leaching at 80 degrees C for 3-4 h by using a 0.2 mol/L H2SO4 solution with a liquid-to-solid ratio of 100:1. The dehydrated residue was mainly rutile containing 72.2 wt% TiO2, which is a satisfactory material for Ti extraction. In addition, upon determining the phase composition and the mass loss after reduction with different dosages of carbon, the reduction route for iron in the magnetite phase and the main gas byproduct during reduction were analyzed. This study provides a new idea for extracting titanium from VTM concentrates.
资助项目	Beijing Natural Science Foundation[2192056] ; Natural Science Foundation of China[51771179] ; State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization ; CAS Interdisciplinary Innovation Team
WOS关键词	SOLID-STATE ; ILMENITE ; IRON ; SEPARATION ; BEHAVIOR ; KINETICS
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000528201300017
资助机构	Beijing Natural Science Foundation ; Natural Science Foundation of China ; State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization ; CAS Interdisciplinary Innovation Team
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/40344]
专题	中国科学院过程工程研究所
通讯作者	Zhang, Ying; Zheng, Shili
作者单位	1.State Key Lab Vanadium & Titanium Resources Compr, 90 Taoyuan St, Panzhihua 617000, Sichuan, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, 1 Bei Er Jie, Beijing 100190, Peoples R China 4.Univ Utah, Mat Sci & Engn, 135 5 1460 E, Salt Lake City, UT 84112 USA
推荐引用方式 GB/T 7714	Safdar, Faiza,Zhang, Ying,Zheng, Shili,et al. Recovery of TiO2-enriched material from vanadium titano-magnetite concentrates by partial carbon reduction and mild acid leaching[J]. HYDROMETALLURGY,2020,193:10.
APA	Safdar, Faiza.,Zhang, Ying.,Zheng, Shili.,Chen, Xing.,Sun, Pei.,...&Li, Ping.(2020).Recovery of TiO2-enriched material from vanadium titano-magnetite concentrates by partial carbon reduction and mild acid leaching.HYDROMETALLURGY,193,10.
MLA	Safdar, Faiza,et al."Recovery of TiO2-enriched material from vanadium titano-magnetite concentrates by partial carbon reduction and mild acid leaching".HYDROMETALLURGY 193(2020):10.