A large number of unexploited low-grade vanadium-titanium magnetite deposits have been found in the Chao-yang area of China in recent years. The reserves are estimated at more than 20 billion tons. A mineralogical study of raw sample indicated that it was a typical low-grade vanadium-titanium magnetite ore with weathering. Most of …
Because of full solid solution in vanadium-titanium systems, i.e. βTi-V solid solution (Tomashchuk et al., 2015), ... Conducting initial trials on Ti–6Al–4V plates allowed the selection of suitable beam settings for dissimilar welding of CP vanadium to Ti–6Al–4V alloy. With evidence of a modified microstructure within the weld, the FZ ...
1. Introduction. The vanadium–bearing titanomagnetite (VBT) is a strategic and complex iron ore, which containing valuable metals of vanadium, titanium, and iron used as constituents of several alloys, whitepigments, and steel [1], [2], [3].In China, the gross reserve of titanium in VBT ore is estimated to be about 1.18 million tons, …
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 …
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 …
Vanadium-titanium magnetite is a complex symbiotic iron ore resource composed of iron, vanadium, titanium and other metals, which is one of the most …
1. Introduction. In recent years, the recycling of waste resources and environmental management in industrial companies have attracted people's attention (Ciarapica et al., 2019).In the Panzhihua area of southwestern China, a large number of vanadium–titanium magnetite tailings (VTMT) are generated in the selection process …
Figure Figure2 2 (a) shows the SCR reaction mechanism over a vanadium–titanium-based catalyst. 19,32 Arnarson et al. 33 studied the reduction step of the SCR mechanism using the monomeric VO 3 H/TiO 2 (001) catalytic model, where NH 3 and NO react to form N 2 and H 2 O as shown in Figure Figure2 2 (b), and indicated that …
1. Introduction. Vanadium, titanium and chromium are significant strategic metals which are widely used in aerospace, energy and alloy fields, etc. [].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 …
They reported that a vanadium‑titanium magnetite concentrate containing 1.14% V 2 O 5, 22.22% TiO 2, 42.51% Fe, and a concentrate of ilmenite containing 16.05% TiO 2 and 20.77% Fe were obtained according to the different magnetic intensities in the range of 0.4–0.8 T. However, because there is no explanation for the vanadium …
High-Strength Low-Alloy Columbium-Vanadium Structural Steel1. 1. Scope. 1.1 This specification covers five grades of high-strength low-alloy structural steel shapes, plates, sheet piling, and bars. Grades 42 [290], 50 [345], and 55 [380] are intended for riveted, bolted, or welded structures. Grades 60 [415] and 65 [450] are intended for ...
In this paper, the effect of smelting time on the vanadium and titanium distribution behavior and slag viscosity properties in the HIsmelt smelting of vanadium–titanium magnetite is investigated for the first time …
Vanadium-titanium magnetite is a complex symbiotic iron ore resource composed of iron, vanadium, titanium and other metals, which is one of the most important iron ore resources in China [1,2,3,4].Titanium, as an indispensable metal raw material for the modern industry and advanced science and technology, is mostly derived from the …
The vanadium content of molten iron is an important economic indicator for a vanadium–titanium magnetite smelting blast furnace, and it is of great importance in blast furnace production to be able to accurately predict it and optimize the operation of vanadium extraction. Based on the historical data of a commercial blast furnace, the …
The results indicate that the optimal process parameters for direct reduction of vanadium–titanium magnetite in a rotary kiln are as follows: a reduction temperature of 1150 °C, reduction time of 4 h, carbon ratio 1.2, particle size of vanadium–titanium magnetite as 8–12 mm, and particle size of pulverized coal of <8 mm.
Titanium is the ninth most abundant element on Earth. It is almost always present in igneous rocks and the sediments derived from them. It occurs in the minerals ilmenite, rutile and sphene and is present in titanates and many iron ores. Titanium is produced commercially by reducing titanium (IV) chloride with magnesium.
The process of preparing vanadium-titanium-based catalysts by the spray pyrolysis method usually leads to a mixed solution of certain amount of vanadium and …
Iron was recovered in the form of high chromium–vanadium iron with 81.53% Fe, 1.31% Cr, and 2.04% V, and titanium was recovered as titanium dioxide pigment with 85–90% yield.
A no-gap-serpentine single cell comprised of a membrane, electrodes, electrolyte distributors, and current collectors was used in all experiments, as shown in Figure 1. 8 The electrodes used were either carbon felt (with 3 mm uncompressed thickness) or carbon paper (with 400 μm uncompressed thickness-SGL 10 AA, SGL …
Introduction. 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 ].
vanadium (V), chemical element, silvery white soft metal of Group 5 (Vb) of the periodic table. It is alloyed with steel and iron for high-speed tool steel, high-strength low-alloy steel, and wear-resistant cast iron. Vanadium was discovered (1801) by the Spanish mineralogist Andrés Manuel del Río, who named it erythronium but eventually …
Chemistry, Materials Science. Abstract Vanadium-titanium-based catalysts are among the most widely used industrial catalysts. This article reviews the progress in …
1. Introduction. Vanadium (V) and titanium (Ti) are important strategic metals, which are widely used in metallurgical industry, chemical industry, machinery manufacturing, battery, aerospace, etc. [[1], [2], [3], [4]].As a representative resource for extracting V and Ti, vanadium–titanium magnetite (VTM) is a polymetallic symbiotic …
As a multi-metallic iron-based ore, vanadium-titanium (V-Ti) magnetite has huge reserves in China, with a mineable grade of 9.83 billion tons (Li et al., 2018). A large amount of V-Ti magnetite tailings have been generated in the selection process of Fe concentrate, with an accumulated storage of about 570 million tons in the Panzhihua …
Here we report a sodium super-ionic conductor structured electrode, sodium vanadium titanium phosphate, which delivers a high specific capacity of 147 mA h g −1 at a rate of 0.1 C and excellent ...
Name: Vanadium: Titanium: History: The element : Vanadium was discovered by M. del Río in year 1801 in Mexico and Sweden.: Vanadium derived its name from Vanadis, an Old Norse name for the Scandinavian goddess Freyja.The element : Titanium was discovered by W. Gregor in year 1791 in United Kingdom.: Titanium derived its name from Titans, …
Vanadium titanomagnetite (VTM) is an important mineral for developing titanium resources, but the comprehensive recovery of ilmenite separation is extremely poor, resulting in the low-efficiency utilization of titanium resources. Here, the separation of ilmenite from VTM ore is studied by combining magnetic separation and flotation …
South African vanadium–titanium magnetite is a complex mineral resource rich in iron, vanadium, titanium, and chromium [1,2,3].Its ore composition is composed of more than 20 elements [4,5,6].It is the most complex ore of its type in the world and contains more than 10 valuable elements, so it has a very important integrated utilization …
The research on the structural characteristics of V 2 O 5, which is the active component of V 2 O 5-WO 3 /TiO 2 catalysts, is the foundation of the theoretical research on V 2 O 5-WO 3 /TiO 2 catalysts. Therefore, V 2 O 5 is generally selected as the cluster model for DFT calculation. The structure type of V 2 O 5 is a layered orthorhombic crystal …
With the selection of NaOH as the most promising roasting reagent, with two subsequent leaching extractions, one in water and the other in acid medium; it was …
