قائمة الطعام
Vanadium titano-magnetite (VTM) is a significant resource in China—analysis shows that China possesses approximately 10 billion tons of VTM. In this study, we characterize VTM's isothermal reduction mechanisms in the mixture of H2, CO, and N2 where the variables considered include reduction time, reduction temperature, gas composition, and pellet …
The vanadium titano-magnetite system's rapid electron transfer leads to the cyclic interconversion of Fe(II)/Fe(III) and facilitates the degradation of 2,4-DNT, and its degradation products go a step further classified as 2,4-dinitrobenzyl alcohol, 2,4-dinitrobenzaldehyde, and p-nitrobenzoic acid. These findings may offer a fresh …
Vanadium has a low neutron capture cross section and is resistant to radiation damage, making these V/Cr/Ti alloys superior to stainless steel in nuclear applications (Gupta and Krishnamurthy, 1992). Vanadium compounds are also used as …
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 …
Download keyboard_arrow_down. Browse Figures. Versions Notes. Abstract. Vanadium titano-magnetite (VTM) is a significant resource in China—analysis shows that China possesses approximately 10 billion …
Blast furnace–basic oxygen furnace (BF–BOF) process is the predominant method for smelting vanadium titano-magnetite (VTM) in China. Hydrogen-rich (H2-rich) gas injection in BF is considered as an important way to reduce CO2 emission under the background of low carbon metallurgy.
Vanadium slag extraction is the main method of vanadium extraction [].During vanadium extraction from vanadium slag, the slag is typically roasted to convert insoluble vanadium oxide into soluble …
The main vanadium sources include vanadium-bearing titano-magnetite and stone coal (Chen et al., 2015; Zeng et al., 2015;Zhu et al., 2016). The total reserves of V 2 O 5 could reach more than 25 ...
Experiments were carried out by adding CaF 2 and NaF as catalysts in an Ar atmosphere to study the isothermal reduction kinetics of vanadium titano-magnetite carbon composite pellets under high temperature in the range from 1 473 to 1 673 K. The scanning electron microscope (SEM) was used to characterize the microstructure of …
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 …
The vanadium titano-magnetite is the main raw materials for producing pigment and vanadium. At the same time, many scholars have been dedicated to studying on comprehensive utilization of titanium slag to prepare titanium material (Liu et al., 2013, Zhang et al., 2007). Now, a large number of un-mined vanadium titano-magnetite with …
1. Introduction. Titanium and vanadium are strategically important resources [1].Titanium alloys have significant application value and broad application prospects in aviation, aerospace, biomedical engineering, and other fields [2], [3].Vanadium is an indispensable element in industrial fields such as steel, nonferrous metals, chemicals, …
The phase transformation of pre-oxidized vanadium titano-magnetite pellets during the reduction process under an H2 atmosphere and a CO atmosphere was discussed, and the reduced samples were ...
Vanadium titano-magnetite is a significant resource in China, and in this study, we characterize its isothermal reduction mechanisms in the mixture of H2, CO, and N2 where the variables considered ...
Experiments were carried out by adding CaF2 and NaF as catalysts in an Ar atmosphere to study the isothermal reduction kinetics of vanadium titano-magnetite carbon composite pellets under high ...
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 technologies. In particular, the …
Abstract. 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 ...
2.1. Materials. In this experiment, vanadium-titanium magnetite concentrate from Wuling, Xinjiang was used as raw material, and its chemical composition is depicted in Table 1.It can be observed from Table 1 that the main valuable elements in the raw iron concentrate are Fe, V and Ti, with the mass fractions of TFe, TiO 2 and V 2 O 5 are high …
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 …
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 …
Vanadium titano-magnetite has the ability to effectively activate PS, and PS + VTM QD system exhibited the relatively high 2,4-DNT degradation efficiency, with the …
In this paper, potassium salt roasting additives were applied to extract vanadium from vanadium–titanium magnetite concentrate. Meanwhile, the mechanisms of potassium salt roasting and acid leaching kinetics were investigated. The results indicate that potassium salt roasting additives are more efficient than sodium and calcium salt and …
Vanadium titanomagnetite ore has prominent latent applications in the recovery of iron, vanadium and titanium. In this study, the reduction effect and product characteristics of vanadium titanomagnetite ore using hydrogen as reductant under fluidized bed conditions were investigated by X-ray diffraction, scanning electron …
Segmentation of the Vanadium Titano-Magnetite Mining Market revolves around the end-use industries, with distinct applications in steel production, battery manufacturing, and titanium-based ...
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 …
The raw vanadium titano-magnetite was crushed and grinded to − 0.074 mm accounting for 90%, and then the sample was separated with low intensity magnetic separation of 50 KA/m by using dry magnetic separator to obtain the vanadium concentrate.The vanadium concentrate was leached in hydrofluoric acid solution at …
Vanadium titano-magnetite (VTM) provides 88% of the world's vanadium [7, 8]. Of these, 14% comes directly from VTM, and 74% comes from vanadium slag produced during steelmaking . ... The concept of application of mass transport to hydrometallurgical processing often involves particles. Hence, the SCM describes the fraction reacted–time ...
Efficient Extraction of Vanadium from Vanadium–Titanium Magnetite Concentrate by Potassium Salt Roasting Additives. Renmin Li Tao Liu Yi-min Zhang Jing Huang Chengbao Xu. Materials Science, Chemistry. 2018. In this paper, potassium salt roasting additives were applied to extract vanadium from vanadium–titanium magnetite concentrate ...
Vanadium is widely used in the steel, alloying, pharmaceutical, and aerospace industries because of its excellent physicochemical properties [ 1, 2, 3 ]. Vanadium and titanium magnetite …
Vanadium in VTD is hosted in (titano)magnetite, ilmenite, and rutile, resulting in a close V-Ti association. The resulting concentrations typically grade between 0.2 and 1% V 2 O 5, and higher-grade deposits can attain over 2% V 2 O 5. World-class vanadium (titano)magnetite deposits are, among others, located in the Sichuan province in China ...
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