Selective Recovery of Vanadium by Oxy-carbochlorination of Basic Oxygen Furnace Slag: Experimental Study
- PDF / 2,651,856 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 17 Downloads / 164 Views
RESEARCH ARTICLE
Selective Recovery of Vanadium by Oxy‑carbochlorination of Basic Oxygen Furnace Slag: Experimental Study A. Seron1 · N. Menad1 · P. Galle‑Cavalloni1 · K. Bru1 Received: 3 March 2020 / Accepted: 11 August 2020 / Published online: 9 September 2020 © The Minerals, Metals & Materials Society 2020
Abstract Vanadium is considered as a critical raw metal in EU whose industry consumes about 13% of the global vanadium production. This metal is mainly used for production of high strength and special steels, and advanced alloys for aerospace application. The vanadium raw material supply is today predominated by China, South Africa, and Russia. This work deals with the development of a chlorination process for vanadium extraction. In order to optimize the selective recovery of vanadium, various parameters (temperature, chlorine partial pressure, carbon content) were investigated. Two approaches for the selective recovery of vanadium are presented in this paper: the first approach consists of selective chlorination and vaporization of vanadium-chlorinated species, which can be then collected in condensates, while the second approach consists in the selective chlorination of vanadium contained in slag in a temperature range avoiding vaporization of vanadium-chlorinated species. Results show that under specific operating conditions, more than 95% of the vanadium content of the slag is recovered. Such specific conditions involve heat-treatment at 900 °C during 90 min of a slag/carbon mixture including less than 20% of carbon under air/chlorine atmosphere at a 0.45 partial pressure value. These promising results highlight the potential of the oxy-carbochlorination treatment for the selective recovery of vanadium from basic oxygen furnace (BOF) slags. Graphical Abstract
Keywords Basic oxygen furnace slag · Characterization · Oxy-carbochlorination · Vanadium · Volatilisation · Metal recovery
Introduction The contributing editor for this article was Yongxiang Yang. * A. Seron [email protected] 1
BRGM, 3 avenue C Guillemin, 45060 Orléans, France
13
Vol:.(1234567890)
Vanadium is classified as a critical raw metal in the EU where industry accounts for 13% of the total world consumption. This metal is mainly used in the production of high-strength low-alloy steels, special steels and special
Journal of Sustainable Metallurgy (2020) 6:478–490
alloys for the aerospace industry. By adding small amounts of vanadium, less than 0.15 wt% for low-alloy steels and up to 5 wt% for high-alloy steels, the hardness, strength and wear resistance of the steel is significantly enhanced [1]. Other uses of vanadium include ceramics, chemicals, catalysts and more recently batteries. In particular, the vanadium redox flow battery (VRFB) is one of the most promising solutions for energy storage because of its fast response rate and high efficiency [1] and the global VRFB market size is expected to have an annual growth rate of 59.7% over the period 2018 to 2025 [2]. As a resource, vanadium is never found unbound in nature. Vanadi
Data Loading...
