Enhancing Reduction Separation and Efficient Recovery of Iron, Vanadium
In this work, diboron trioxide and calcium fluoride are applied as composite additives to explore a process suitable for processing low-grade, high-vanadium, ultra-high-titanium vanadium–titanium magnetite. The metallized coal-based direct reduction–electromagnetic separation experiment was conducted. Results show that a …
The extraction of vanadium from titanomagnetites …
A reducing roast process has been shown to be effective for separating iron from vanadium, titanium and chromium in titanomagnetites, enabling the production of …
A Comparative Study of Extracting Vanadium from …
Read this article. In this study, a new vanadium extraction process from vanadium titano-magnetite (VTM) featuring calcification roasting and (NH 4) 2 C 2 O 4 …
Recovery of TiO2-enriched material from vanadium titano-magnetite …
Introduction. Vanadium titano-magnetite (VTM) is a typical resource in China. The reserves of VTM are approximately ten billion tons in the Panzhihua-Xichang region of China in which V and Ti account for 11.6% and 35.2% of the world reserves, respectively (Ping et al., 2011; Wang et al., 2008a; Wang et al., 2008b; Zheng et al., 2016).
Reduction behaviors of vanadium‑titanium magnetite with …
The vanadium‑titanium magnetite with 67% passing 0.074 mm was taken from Chaoyang city, Liaoning province, China. The chemical compositions of vanadium‑titanium magnetite ore are presented in Table 1, which were determined by chemical methods combined with X-ray fluoroscopy (XRF).The vanadium‑titanium …
Recovery of Fe and V via selective reduction–magnetic …
PDF | On Nov 18, 2021, Liwei Liu and others published Recovery of Fe and V via selective reduction–magnetic separation of vanadium-titanium magnetite concentrate | Find, read and cite all the ...
Gas-based reduction of vanadium titano-magnetite …
the reduction of vanadium titano-magnetite were studied. 2. Experimental 2.1. Raw materials The vanadium titano-magnetite concentrate used in this study was obtained from the Panxi area of China. The chemical composition and XRD pattern of the sample are given in Table 1 and Fig. 1, respectively. As evident in Fig. 1,
Metals | Free Full-Text | Vanadium–Titanium Magnetite …
This paper investigated a pellet ore production process in which vanadium was extracted from vanadium and titanium magnetite concentrates using sulfuric acid leaching. Calcium and magnesium were added to the iron ore concentrate during pellet production to produce calcium vanadate and magnesium vanadate after roasting. The …
Process Mineralogical Analysis of a Typical Vanadium …
Abstract. This study is focused on the detailed investigation of the process mineralogy of a typical Vanadium titano-magnetite concentrate (VTM) to efficiently …
Theoretical Modeling and Experimental Evaluation of Vanadium …
Recovering vanadium from vanadium titanium-magnetite (VTM) ore using (NH 4) 2 C 2 O 4 is a clean hydrometallurgical process, but the drawback is the low recovery and slow kinetics due to the formation of inhibitor. A novel energy-efficient mathematical model was derived for green leaching of VTM in which the mechanical …
A Comparative Study of Extracting Vanadium from Vanadium Titano …
ABSTRACT. In this study, a new vanadium extraction process from vanadium titano-magnetite(VTM) featuring calcification roasting and (NH 4) 2 C 2 O 4 solution leaching has been proposed. Compared with the traditional sodium roasting, the calcification roasting can avoid the production of waste gas and the sodium free tailings …
Steelpoortdrift Vanadium Project, South Africa
The Steelpoortdrift vanadium project is an open-pit mine located in the Bushveld igneous complex of South Africa. It is one of the world's largest undeveloped vanadium deposits. Vanadium Resources, a mining company based in Australia, is developing the project. The pre-feasibility study for the project was completed in 2021, …
Theoretical Modeling and Experimental Evaluation of Vanadium …
Recovering vanadium from vanadium titanium-magnetite (VTM) ore using (NH4)2C2O4 is a clean hydrometallurgical process, but the drawback is the low recovery and slow kinetics due to the formation ...
Optimized magnetic separation for efficient recovery …
We present an optimized magnetic separation process to improve the recovery of high-content vanadium and titanium concentrates from vanadium‑titanium …
High-Efficiency Extraction of Fe, V, and Ti from …
Jun, Z., Feng, W., Yuan-hong, Q. et al. High-Efficiency Extraction of Fe, V, and Ti from Vanadium Titano-Magnetite Concentrate Based on Activated Reduction. …
Preparation, Sintering Behavior and Consolidation Mechanism of Vanadium
High-quality oxidized pellets are the basis to achieve high-efficiency utilization of vanadium–titanium magnetite (VTM) ores. Bentonite was used as a binder of VTM. The main phase composition of VTM is titanomagnetite and ilmenite. When the amount of bentonite is 1%, the compressive strength and dropping strength of VTM …
Preparation of titanium mineral from vanadium …
Abstract. Titanium mineral was prepared from vanadium titanomagnetite concentrates by hydrogen reduction and acid leaching. The leaching behaviors of …
Research Progress on Comprehensive Utilization of Vanadium …
Publish Date: 25 April 2021. Abstract. At present, the methods of comprehensive utilization of vanadium-titanium magnetite tailings are mainly divided into two categories: tailings reseparation (Valuable metal recycling) and overall utilization. According to the nature and composition of the tailings, in the tailings reseparation uses gravity ...
Mechanisms and Kinetics of Solid State Reduction of Titano Magnetite
Titano magnetite ore is a potential resource for iron and titanium and even vanadium in the metallurgical industry and its solid state carbothermic reduction is found to be mix controlled (initially chemical reaction rate control switching to diffusional rate control at later stages) [4–6]. Currently, the general reduction process of iron ...
Mechanism for Photopromoted Release of Vanadium from Vanadium Titano
The release of V from vanadium titano-magnetite, a predominant natural source of V, was studied under light irradiation. The release rate of V from vanadium titano-magnetite was accelerated by light irradiation, and the oxidation of V was detected. The essence of the photopromoted release of V is that the immobile low valence V is transformed to the …
Preparation of titanium mineral from vanadium …
A novel process for recovery of iron, titanium, and vanadium from titano- magnetite concentrates: NaOH molten salt roasting and water leaching processes [J]. Journal of Hazardous Materials, 2013, 244/245: 588âˆ'595. [3]
Vanadium extraction from titano-magnetite by …
Vanadium extraction from titano-magnetite by using hydrofluoric acid was put forward. The process of low intensity magnetic separation, hydrofluoric acid leaching, co-precipitation with NaOH, roasting with Na 2 CO 3, circulating water leaching and precipitation of vanadium has been investigated.The results show that over 85% …
A New Process of Extracting Titanium from …
Abstract. A new process of extracting titanium from vanadium–titanium magnetite (VTM) in the Panxi area in Sichuan, China is introduced in this work. Various …
Preparing high-quality vanadium titano-magnetite pellets …
ABSTRACT The oxidation behaviour and the phase and microstructure evolution of VTM (vanadium titano-magnetite) pellets were studied during thermal processing in order to optimise the production method for producing high-quality pellets. The oxidation tests showed that titanium magnetite and ilmenite in VTM began to …
Separations | Free Full-Text | Process Mineralogy of Vanadium …
After decades of development of the vanadium titanomagnetite (VTM) ore in the Panzhihua district changes have taken place to the ore characteristics. In addition, preliminary research carried out in this area mainly focused on the separation and extraction of iron resources and lacked a systematic research focus on the process mineralogy of …
A New Process of Extracting Titanium from …
A new process of extracting titanium from vanadium–titanium magnetite (VTM) in the Panxi area in Sichuan, China is introduced in this work. Various experiments, including …
Bio-accessibility and mobilization dynamics of soil vanadium …
Here, we selected a 48-year vegetation restoration chronosequence in the Majiatian vanadium titano-magnetite tailings reservoir in Panzhihua City, Southwest China, to explore the bio-accessibility of V in the soils by using the DGT technology, and the resupply capacity of V from the soils was then evaluated by the DIFS model.
Release kinetics of vanadium from vanadium titano-magnetite…
Vanadium titano-magnetite raw mineral was purchased from the National Research Center for Certified Reference Material (Beijing, China). The main composition by weight percent of the mineral provided is total Fe 27.55%, SiO 2 25.47%, TiO 2 9.72%, MgO 6.17%, CaO 7.50%, Al 2 O 3 10.29%, and V 2 O 5 0.258%. The X-ray diffraction …
Reduction kinetics of oxidized vanadium titano-magnetite …
The oxidized VTM pellets were prepared as follows. Vanadium titano-magnetite concentrate (<0.074 mm and its chemical composition can be seen in Table S1) was thoroughly mixed with 2 wt% binder (bentonite, shown as Table S2) and 8 wt% water and pelletized to ϕ10-12 mm in a disc pelletizer.The pellets were then loaded into a …
Metalizing reduction and magnetic separation of vanadium titano
To achieve high efficiency utilization of Panzhihua vanadium titano-magnetite, a new process of metalizing reduction and magnetic separation based on hot briquetting is proposed, and factors that affect the cold strength of the hot-briquetting products and the efficiency of reduction and magnetic separation are successively …