Direct preparation of titanium alloys from Ti-bearing blast furnace slag

Handong Jiao, Donghua Tian, Shuai Wang, Jun Zhu, Shuqiang Jiao

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Vanadium-titanium magnetite (VTM) is one of the important titanium ore. Now, it is mainly extracted by the steel-oriented traditional blast furnace technology and a lot of Ti-bearing blast furnace slag (TiO2 > 20 wt%) is discharged and abandoned annually, which not only results in the environment pollution but also causes the waste of titanium resource. In this work, a new electrolysis process in molten Ti-bearing blast furnace slag with liquid iron cathode was proposed for liquid titanium alloys recovery from the Ti-bearing blast furnace slag. The results indicate that the depolarization effect by using liquid iron cathode results in the low deposition potential of about 2.0 V and high current efficiency of 69.82%. It further shows that the titanium can be extracted from the slag by increasing the electrolysis time or cell voltage although the deposition of the silicon is occurred more easily than that of the titanium based on thermodynamic data.

Original languageEnglish
Pages (from-to)D511-D516
JournalJournal of the Electrochemical Society
Volume164
Issue number7
DOIs
Publication statusPublished - 2017
Externally publishedYes

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