Oxygen-converter processing of vanadium-bearing hot metal

Смирнов, Л. А.; Kushnarev, A. V.; Fomichev, M. S.; Ровнушкин, В. А.; Savel’ev, M. V.

doi:10.3103/s0967091213090131

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…[1]. Vanadium slag (VS) is a by-product of smelting vanadium titanomagnetite, which is mainly composed of vanadium, titanium, chromium, iron, manganese and silicon [2,3]. However, as a high-quality raw material containing vanadium, titanium and chromium, only the vanadium bearing in VS can be extracted through traditional processes, namely a sodium salt roasting-water leaching process and calcification roasting-acid leaching process [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Hydrothermal Separation of Titanium Vanadium and Chromium from a Pregnant Oxalic Acid Leachate

2022

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The separation of titanium, vanadium and chromium in vanadium slag (VS) is a difficult problem restricting the comprehensive utilization of VS. This paper presents the first study on the separation of titanium, vanadium and chromium from oxalic acid leachate of VS. Firstly, the separation of titanium from the leachate by hydrothermal method was studied. The results show that more than 99% of titanium in the leachate was precipitated in the form of spherical anatase TiO2 with the purity of 95.7%. Then, the extraction separation of vanadium and chromium from the titanium-free filtrate by three-stage extraction of acidified N235 extractant and four-stage stripping of HCl solution was investigated. The extraction mechanism was identified as the anion exchange reaction between acidified N235 extractant and vanadium and chromium complex anions, which were further stripped by HCl solution in the stripping process. After obtaining the concentrated and purified stripping solution containing vanadium and chromium, the separation of vanadium and chromium from the stripping solution by hydrothermal method was studied, and the product was mainly composed of VO2 and Cr2O3. This process provides an idea for the comprehensive utilization of titanium, vanadium and chromium in oxalic acid system.

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Section: Introductionmentioning

confidence: 99%

“…)org + V(C2O4)33− = ((R3NH)3•V(C2O4)3)org + 3Cl − (R3NHCl)org + VO(C2O4)2 2− = ((R3NH)2•VO(C2O4)2)org + 2Cl − (R3NHCl)org + Cr(C2O4)3 3− = ((R3NH)3•Cr(C2O4)3)org + 3Cl − (R3NHCl)org + Fe(C2O4)3 3− = ((R3NH)3•Fe(C2O4)3)org + 3Cl − (R3NHCl)org + Al(C2O4)3 3− = ((R3NH)3•Al(C2O4)3)org + 3Cl −…”

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confidence: 99%

Hydrothermal Separation of Titanium Vanadium and Chromium from a Pregnant Oxalic Acid Leachate

2022

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“…The titanomagnetite concentrate is generally smelted through the traditional blast furnace process, and liquid iron containing vanadium, titanium, and chromium is produced [4,6,7]. Then, to recover the vanadium that is reduced and dissolved in the liquid iron during the blast furnace smelting process, the liquid iron is blown in an oxygen-converter, which produces the vanadium, titanium, chromium, and some impurities, and some iron was oxidized to form a by-product called vanadium slag [8][9][10]. Although this by-product is generally called vanadium slag, a considerable amount of titanium and chromium is also contained in this it beside vanadium [11].…”

Section: Introductionmentioning

confidence: 99%

Improved Process for Separating TiO2 from an Oxalic-Acid Hydrothermal Leachate of Vanadium Slag

Miao

Gao

et al. 2022

Metals

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In the present study, a process of separating high-quality TiO2 from an oxalic-acid leachate of vanadium slag was proposed. It consists of two steps; oxalic acid was firstly recovered from the leachate by the cooling-crystallization method, and subsequently TiO2 was separated from the oxalic-acid recovered leachate by the hydrothermal precipitation method. The experimental results indicate that oxalic acid can be recovered from the leachate by cooling crystallization at 5 °C, and after the recovery of oxalic acid, the purity of final TiO2 product can also be improved. For example, when the leachate was cooled directly at 5 °C for 5 h, about 7% of oxalic acid was recovered, and the purity of final TiO2 product improved from 95.7% to 96.6%. Furthermore, it was found that when some HCl solution was added to the leachate, both the recovery percentage of oxalic acid and the purity of TiO2 product increased. For instance, when 15 vol% of HCl solution relative to pregnant leachate was added, about 35% oxalic acid was recovered by cooling crystallization at 5 °C for 3 h, and the anatase TiO2 product with a purity of 99.2% was obtained by hydrothermal precipitation at 140 °C for 2.5 h.

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Experimental Study on Carburization of Higher Vanadium-Bearing Hot Metal

2018

The Minerals, Metals &Amp; Materials Series

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Oxygen-converter processing of vanadium-bearing hot metal

Cited by 6 publications

References 4 publications

Hydrothermal Separation of Titanium Vanadium and Chromium from a Pregnant Oxalic Acid Leachate

Hydrothermal Separation of Titanium Vanadium and Chromium from a Pregnant Oxalic Acid Leachate

Improved Process for Separating TiO2 from an Oxalic-Acid Hydrothermal Leachate of Vanadium Slag

Experimental Study on Carburization of Higher Vanadium-Bearing Hot Metal

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