Metallography of titanium and titanium alloys insight
Metallurgy and microstructure of titanium and titanium alloys. Metallography plays a key part in the quality control of titanium and its alloys, from monitoring the initial production process to assessing porosity on cast parts and controlling heat-treatment. It also plays an important part in research and development of titanium alloys and ...
Efficient Separation and Recovery of Vanadium, Titanium, …
The dumping of a large amount of steel slag not only wastes metal resources, but pollutes the ecological environment. In this study, a method for recovery of vanadium, titanium, iron, magnesium, and synthesizing anhydrite from steel slag is proposed. The leaching efficiency of V, Ti, Fe, and Mg was 99.42%, 99.36%, 99.89%, …
Isothermal reduction kinetics and mineral phase of …
Reduction of chromium-bearing vanadium–titanium sinter (CVTS) was studied under simulated conditions of a blast furnace, and thermodynamics and kinetics were theoretically analyzed. Reduction kinetics of CVTS at different temperatures was evaluated using a shrinking unreacted core model. The microstructure, mineral phase, …
Reduction behaviors of vanadium‑titanium magnetite with …
With the development and the improvement of metallurgy technology, the direct reduction of vanadium‑titanium magnetite emerges as the times require. In order to further recover vanadium and titanium in vanadium‑titanium magnetite, sodium salt was usually added in the roasting process, and the recovery of iron, vanadium, and titanium …
High-chromium vanadium–titanium magnetite all-pellet
High-chromium vanadium–titanium magnetite (HVTM) is a crucial polymetallic-associated resource to be developed. The all-pellet operation is a blast furnace trend that aims to reduce carbon dioxide emissions in the future. By referencing the production data of vanadium-titanium magnetite blast furnaces, this study explored the …
Efficient separation of vanadium, titanium, and iron from …
The vanadium–bearing titanomagnetite (VBT) is a strategic and complex iron ore, which containing valuable metals of vanadium, titanium, and iron used as …
Separations | Free Full-Text | Process Mineralogy …
Vanadium titanomagnetite (VTM) is a valuable multi-element symbiotic ore mainly composed of iron, vanadium, and titanium, as well as small amounts of chromium, nickel and cobalt [1,2,3]. The global …
Optimization of Mold Powders for High‐Nitrogen Stainless …
Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing, 400044 China. Fujian Tsingtuo Special Steel Technology and Research Co. Ltd., Fujian, China. Search for more papers by this author. First published: 06 July 2023.
Double pyrovanadates CaMgV2O7: Formation …
Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, China. Correspondence. Junyi Xiang and Xuewei Lv, College of …
Selective nitridation-corrosion process to recover vanadium, …
Selective nitridation-corrosion process to recover vanadium, titanium, chromium, and iron from vanadium slag. J Environ Manage. 2022 Oct 26;325 (Pt B):116604. doi: …
A critical review on extraction and refining of vanadium metal
Metallic vanadium has special properties and is widely used in metallurgy, aviation, nuclear industry and other fields. Vanadium is a rare and refractory metal, its high purity metal is difficult to prepare. ... Schmidt [103] reported the diffusion of titanium in vanadium at 1600 °C, 1700 °C and 1800 °C. These diffusion coefficients predict ...
Optimized use of MgO flux in the agglomeration of high
The optimized use of MgO flux in the agglomeration of high-chromium vanadium-titanium magnetite was investigated systematically through sinter and pellet experiments. MgO was added in the form of magnesite. When the content of MgO in the sinter was increased from 1.95wt% to 2.63wt%, the low-temperature reduction …
Review of Vanadium Production Part I: Primary Resources
Feng Gao a School of Metallurgy, Northeastern University, Shengyang, PR China;b CAS Key Laboratory of Green Process and Engineering, ... Donghui Chen e Hebei Vanadium-Titanium Industrial Technology Research Institute, HBIS Group, Chengde, PR China Correspondence chendonghui6001@163
Reduction mechanism of high-chromium vanadium–titanium …
The reduction of high-chromium vanadium–titanium magnetite as a typical titanomagnetite containing 0.95wt% V2O5 and 0.61wt% Cr2O3 by H2–CO–CO2 gas mixtures was investigated from 1223 to 1373 K. Both the reduction degree and reduction rate increase with increasing temperature and increasing hydrogen content. At a …
Sintering behaviors and consolidation mechanism of high
To achieve high efficiency utilization of high-chromium vanadium–titanium magnetite (V–Ti–Cr) fines, an investigation of V–Ti–Cr fines was conducted using a sinter pot. The chemical composition, particle parameters, and granulation of V–Ti–Cr mixtures were analyzed, and the effects of sintering parameters on the sintering behaviors were …
A review on the metallurgical recycling of vanadium from …
In nature, vanadium is found in the form of oxides, sulfides and phosphates which are associated with other metals such as iron, titanium, lead, aluminum, zinc, …
High-Efficiency Extraction of Fe, V, and Ti from Vanadium …
Vanadium-containing titanium magnetite is the main source of V and Ti in the internal market. About 75% Fe, 82% V, and 44% Ti pass into iron concentrate during ore enrichment [].Therefore, the question of how to improve comprehensive utilization of vanadium-titanium magnetite concentrate (VTMC) is of decisive importance for the …
Review of Vanadium Production Part I: Primary …
Production Part I: Primary Resources, Mineral Processing and Extractive Metallurgy Review, DOI: 10.1080/08827508.2021.1883013. ... Vanadium-Titanium Industrial Technology Research Institute, HBIS ...
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 …
Effect of Smelting Time on Vanadium and Titanium …
The experimental results show that extending the smelting time increases the FeO content in the slag, the LV rose from 0.66 to 5.02, the LTi declined from 206.90 …
Review of Vanadium Production Part I: Primary …
In this review, the production of vanadium using primary resources including vanadium titano-magnetite, vanadium slag, vanadium bearing stone coal, and carnotite has been reviewed, with...
Extractive metallurgy of vanadium-containing titaniferous …
Many technologies exist for the treatment of titaniferous magnetites that contain vanadium. Each process is designed based on the relative amounts of titanium, vanadium and iron. In some cases, steelmaking is the primary purpose followed by the secondary recovery of vanadium. In others, the vanadium is the main product. This …
Effect of Liquid Addition on Gas-Solid Fluidization
Chongqing University, Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, 174 Shazheng Street, 400044 Chongqing, China. Correspondence: Liangying Wen ([email protected]), Chongqing University, School of Materials Science and Engineering, 174 Shazheng Street, Chongqing, 400044, …
Extractive Metallurgy of Vanadium | JOM
The exhaustion or depletion of present sources of vanadium, together with the trend of new uses, is calling attention to problems of vanadium extraction from new sources. This paper surveys the extractive metallurgy of vanadium.
High-Efficiency Smelting Separation of Vanadium–Titanium …
Efficient utilization of vanadium–titanium magnetite can be achieved by high-temperature pyrometallurgical smelting separation of the material. The fusibility of …
Enhancing Reduction Separation and Efficient Recovery of Iron, Vanadium
Materials. Table I shows the chemical composition of the ultra-high-titanium vanadium–titanium magnetite concentrate (<75 μm) used in the experiment. The data clearly reflect the mine's low-iron, high-vanadium, and ultra-high titanium characteristics. The X-ray diffraction (XRD) pattern of the raw ore in Figure 1 shows that the phases of …
Influence of basicity and temperature on bonding phase …
To develop a smelting process for the comprehensive utilization of high-chromium vanadium−titanium magnetite (HCVTM), the micro-sinter test was applied to investigate the influence of basicity and temperature on the HCVTM sinters. The bonding phase strength (BS) was tested via an electronic universal testing machine. The phase …
A critical review on extraction and refining of vanadium metal
The main sources of vanadium include vanadium-containing titanium magnetite, oil ash, spent vanadium catalyst, bauxite and stone coal vanadium ore …
Softening-melting Properties of High-chromium Vanadium–titanium …
High-chromium vanadium-titanium magnetite (HVTM) is a critical polymetallic ore resource, and its large-scale utilization is considered feasible by smelting flux pellets in blast furnaces. This study investigated the softening-melting properties of pure HVTM pellets ( HVTM pellets) and HVTM with 30% conventional iron pellets (70% HVTM ...
Effect of diboron trioxide on the crushing strength and …
The effect of diboron trioxide (B 2 O 3) on the crushing strength and smelting mechanism of high-chromium vanadium–titanium magnetite pellets was investigated in this work.The main characterization methods were X-ray fluorescence, inductively coupled plasma–atomic emission spectroscopy, mercury injection porosimetry, X-ray diffraction, …
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