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Further investigation of the prepared titanomagnetite nanoparticles was also done by analyzing the Infra-Red (IR) spectra at the wavenumber of 4000–400 cm −1, as shown in Fig. 2.By investigating the positions of the peaks, it is shown that the peaks located at a wavenumber of 425–475 are associated with the vibration stretching of metal-oxide at the tetrahedral site in …
The chemical composition of the VTM concentrate is shown in Table 1, which indicates that vanadium, titanium, and iron are the main valuable elements, and there are some impurities in the concentrates.The XRD pattern of the VTM concentrates in this study is shown in Fig. 2.The primary phase in the concentrates is titanomagnetite (Fe 3-x Ti x O 4, 0≤x≤1), with …
Effects of embedding direct reduction followed by magnetic separation on recovering titanium and iron of beach titanomagnetite concentrate. Author links open overlay panel Chao Geng, Ti-chang Sun, You-wen Ma, Cheng-yan Xu, Hui-fen Yang. Show more. Add to Mendeley. Share. Cite.
The low-temperature oxidation process in titanomagnetite has been investigated. Using samples with controlled grain sizes, it has been shown that there is a critical grain size in the oxidation behaviour of titanomagnetites; smaller grains undergo low-temperature oxidation, while larger ones separate to Fe-rich titanomagnetite and Ti-rich hemo-ilmenite (high-temperature …
Ulvospinel (Fe2TiO4) and titanomagnetites (TM) (pseudo-binary (1-x)Fe3O4xFe2TiO4 system, where, e. g. TM95 corresponds to x = 0.95) were made using a solid-state synthesis technique. For single phase titanomagnetites (x>0.75), our measured lattice constants extends the previous work of Wechesler to Ti-rich solid solutions, and extrapolates …
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 …
The effect of sodium sulfate on direct reduction of beach titanomagnetite, followed by magnetic separation, to separate iron and titanium was investigated. Direct reduced iron (DRI) with a high Fe content, low TiO2 content and low iron recovery was obtained after adding sodium sulfate. When the sodium sulfate dosage was increased from 0 to 10 mass%, the Fe content …
Titanium substitution has a significant effect on the temperature dependence (5–300 K) of low-temperature saturation remanence and of initial susceptibility in synthetic and natural titanomagnetite (Fe 3−x Ti x O 4, 0≤x<0.7). Our results show that low-temperature magnetic properties of multidomain titanomagnetite are markedly influenced by the …
Reduction roasting-magnetic separation realizes the separation of titanium and iron in high-titanium beach titanomagnetite. However, the TiO 2 grade in titanium concentrate …
Iron and titanium were recovered from beach titanomagnetite (TTM) concentrate by embedding direct reduction and magnetic separation. The reduction products and the effects of the reductant type and reduction temperature on the reduction behavior were investigated. The results showed that the reduction of TTM concentrate was strongly related to the gasification …
We hypothesize that the fungi were drawn to basaltic glass-titanomagnetite boundaries given that titanomagnetite exposed on or very near grain surfaces represents a source of iron to microbes.
Complex processing of titanomagnetite ores provides for production of not only iron concentrate, but also vanadium and titanium present in it. In this regard, the relevance of research lies in the ...
Preferential removal of titanomagnetite nanoparticle clusters during high-temperature hydrothermal alteration; Vent hydrothermal alteration destroys thermoremanence, while the formed hydrothermal deposits acquire chemical remanent magnetization; Plain Language Summary.
Titanomagnetite (Fe 3-x Ti x O 4, 0 ≤ x ≤ 1) is a common, naturally occurring magnetic mineral critical to many paleomagnetic studies. Underlying most interpretations is the assumption that, lacking chemical alteration, Curie temperature (T c) remains constant.However, recent work has demonstrated that T c of many natural titanomagnetites varies strongly as a …
Effects of direct reduction time of vanadium titanomagnetite concentrate (VTCE) on the preparation and photocatalytic performance of calcium titanate were investigated in this study. It was found that extending the reduction time could not only promote the formation of calcium titanate, but also facilitate the reduction of iron minerals in the reduction products. The …
As titanomagnetite nanoparticles are important magnetic remanence carriers in MORB, their preferential dissolution dramatically modifies the rock magnetic properties (Figure 4). Possible effects of low-temperature …
Titanomagnetite mineral data, information about Titanomagnetite, its properties and worldwide locations.
Titanomagnetite (Fe,Ti) 3 O 4 0-34 A homogeneous cubic mineral with Fe 2 O 3 as the dominant phase. Contains above 5% TiO 2. A solid solution of ulvospinel and magnetite Titanohematite …
The smelting-separation process for metallized pellets of vanadium-bearing titanomagnetite concentrates was studied. The influences of smelting temperature, smelting time, and the basicity of the metallized pellet on vanadium and iron recovery were investigated. The characteristics of titanium slag were analyzed using X-ray diffraction, energy dispersive …
Vanadium titanomagnetite, which contains the valuable elements iron, vanadium, and titanium, is a complex iron ore. Although it widely distributed throughout the world, concentrations thereof are mainly found in Russia, China, South Africa, and the United States.1 The Panzhihua region of China has rich vanadium titanomagnetite deposits with reserves of …
In this paper, we study the possibility of obtaining iron and titanium-vanadium concentrates with highest contents of iron and titanium, respectively, through hydrometallurgical processing of the titanomagnetite ores of the Chineisk deposit. We varied two key parameters to determine the efficiency of the process: (a) concentration of leaching solution (ammonium fluoride); and (b) …
1. Introduction [2] Titanomagnetite (Fe 3−x Ti x O 4) forms a solid solution series between end members of magnetite (Fe 3 O 4 [x = 0]) and ulvöspinel (Fe 2 Ti 1 O 4 [x = 1]). These are cubic minerals with inverse spinel …
The smelting-separation process for metallized pellets of vanadium-bearing titanomagnetite concentrates was studied. The influences of smelting temperature, smelting time, and the basicity of the metallized pellet on vanadium and iron recovery were investigated. The characteristics of titanium slag were analyzed using X-ray diffraction, energy ...
Figure 7.1 Saturation magnetization data (in ß pfu) for the titanomagnetite solid solution, obtained mainly from sintered material of unknown degree of non-stoichiometry. The dashed …
The Baima vanadium titanomagnetite deposit, located in the Panzhihua-Xichang (Panxi) metallogenic belt in China, is one of the super-large deposits in the region. The …
The traditional titanomagnetite sintering process consumes high fuel and produces weak-strength sinter. In this study, double-layer sintering was used to solve above problems. The theoretical ...
The paper presents the effect of pretreatment on the ammonium sulfate roasting behavior of vanadium-bearing titanomagnetite. The effects of the several parameters included pretreatment temperature, time and atmosphere upon the extraction efficiency of V, Ti and Fe were investigated. Under the conditions of a pretreatment temperature of 900 °C, a time of 2h and …
Sun et al. [30] studied the use of beach titanomagnetite concentrate with 57.29% Fe as raw material (without additives) to fully recover iron and titanium, producing iron powder with an iron grade of 90.28%. Li et al. [31] upgraded copper slag with 40.33% Fe by direct reduction–magnetic separation with the addition of Na2CO3 and CaO and found ...
Laboratory measurements of density, magnetic susceptibility, remanence, resistivity, and induced‐polarization response of New Zealand titanomagnetite sands ("ironsands") were made for different volume concentrations of titanomagnetite in the range 10 to 100 percent. Both density ρ and magnetic susceptibility κ of these sands increase monotonically with ; the …
To develop a novel and clean smelting process for the comprehensive utilization of Hongge vanadium titanomagnetite (HVTM), this work determined the influence of B 2 O 3 on the oxidation and induration process of HVTM pellets (HVTMP). The oxidation degree, compressive strength, porosity, crystalline phase, microstructure, and induration degree of HVTMP were …
