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DOI: 10.1007/s42243-023-01156-4 Corpus ID: 266953245; Enrichment and reconfiguration of titanium-bearing phase in vortex smelting reduction process of vanadium–titanium magnetite
The fusibility of vanadium–titanium magnetite during reduction and smelting reflects the difficulty of smelting separation. ... 1.28%, and 0.35%, respectively, and the recovery rate of TiO 2 in slag is 99.76%. Under the condition of high basicity, the smelting temperature of 1600 °C, basicity of 1.0, carbon ratio of 1.4, smelting time of 100 ...
Thermodynamic calculations indicated that pseudobrookite (Fe 2 TiO 5) was reduced in the order Fe 2 TiO 5 → Fe 2 TiO 4 → FeTiO 3 → FeTi 2 O 5, ... Phase transformation and slag evolution of vanadium–titanium magnetite pellets during softening–melting process. Powder Technol., 396 (2022), pp. 710-717. View PDF View article View in ...
On the basis of the phase diagram of the TiO 2 –CaO–SiO 2 –MgO–Al 2 O 3 slag system, Wang et al. studied the composition of titanium slag with high titanium content suitable …
Leaching titaniferous magnetite concentrate with alkali solution of high concentration under high temperature and high pressure was utilized to improve the grade of iron in iron concentrate and the grade of TiO 2 in titanium tailings. The titaniferous magnetite concentrate in use contained 12.67% TiO 2 and 54.01% Fe. The thermodynamics of the …
The effect of TiO 2 on the crushing strength for high-Cr V-Ti magnetite pellets was studied in this paper. On one hand, the crushing strength obviously decreased with the …
HIsmelt is considered one of the most promising processes for future vanadium-titanium magnetite smelting. In this study, we investigated the effects of TiO 2 and FeO on the viscosity and structure properties of HIsmelt titanium-containing slag using the rotating cylinder method, the Fourier Transform Infrared, and Raman. Experimental findings indicate a …
The main component of titanium iron concentrate is magnetite. For titanium iron concentrate in Panzhihua, the content of iron is about 50%, and the content of TiO 2 is about 12%. Three process methods, namely the Blast Furnace iron making process, the rotary kiln-electric furnace process, and the reduction-magnetic separation process, dominate the …
Vanadium–titanium magnetite tailings (VTMT) are a common industrial waste in China, which are harmful to the environment and economic development. ... #01-075-1092), iron titanium oxide (Fe 2 TiO 5, #00-009-0182), and anorthite (CaAl 2 Si 2 O 8, #00-041-1486). The peak intensity of the SiO 2 gradually decreased during heating. This may be due ...
Calcium ferrite-TiO 2 (C x F-TiO 2) diffusion couples were prepared to investigate the reaction between TiO 2 and CaO of calcium ferrite during sintering vanadium‑titanium magnetite. The distribution, species, and number of phases in the vicinity of the C x F/TiO 2 interface were characterized by electron probe microanalysis (EPMA), Fourier transform …
The physicochemical properties of TiO 2 are largely dependent on the defects. Here, using first-principles calculations, we report a systematic investigation of the magnetic properties of Ti …
Titanium-bearing magnetite ore is generically defined as magnetite with > 1% titanium dioxide (TiO 2) and is usually vanadium-bearing.The iron and titanium occur as a mixture of magnetite (Fe 3 O 4) and ilmenite (FeTiO 3) with vanadium oxide usually occurring within the solid solution of the titanium-bearing magnetite phase.These ores are currently widely processed in blast …
The effect of calcium oxide on the crushing strength, reduction, and smelting performance of high-chromium vanadium–titanium magnetite pellets (HCVTMP) was studied in this work. The main characterization methods of an electronic universal testing machine (EUTM), X-ray fluorescent (XRF), inductively-coupled plasma-atomic emission spectroscopy …
of Vanadium-Titanium Magnetite ... China, which contains more than 8.73 108 tons of TiO 2 accounting for 90.6% of the national reserves. To fully utilize Panzhihua titanium resources, many processes were proposed. The development …
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 magnetite ore contained 47.58 wt% Fe, …
HIsmelt is considered one of the most promising processes for future vanadium-titanium magnetite smelting. In this study, we investigated the effects of TiO 2 and FeO on the …
the titanium magnetite levels to over 3% had a significant deterioration in sinter RDI. Liu et al. [9] studied reduction process of pellet containing high chromium vanadium titanium magnetite in cohesive zone. Cheng et al. [5] studied the effect of TiO 2 on the crushing strength for high chromium vanadium–titanium magnetite pellets. Qiu et al.
Low-grade vanadiferous titanomagnetite ore (LVTM) is as an important mineral resource for sintering ore manufacturing. Furthermore, TiO 2 has a significant effect on the sintering process of iron ore fines. The effects of TiO 2 on the metallurgical properties, microstructure, and mineral composition of LVTM sinter were investigated by sintering pot …
The reduction behavior of a new type of blast furnace burden named vanadium‑titanium magnetite carbon composite hot briquette (hereinafter abbreviated as VTM-CCB), including fraction of reaction (f), reduction shrinking, crushing strength after reduction, phase transformation of valuable elements, and softening-melting-dripping behavior, were …
Vanadium-titano magnetite (VTM) is a typical resource in China. The typical method used to recover valuable elements from VTM concentrates is by the blast furnace smelting method. However, titanium is nearly all wasted in the form of blast furnace slag. A new pathway towards obtaining TiO 2-enriched material for titanium extraction was designed in …
The effect of diboron xide (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, …
High‑Eciency Smelting Separation of Vanadium–Titanium Magnetite by Electrothermal Smelting: Parameter Optimization and Element Enrichment Mechanism ... 98.64%, and 96.75%, 1.28%, and 0.35%, respectively, and the recovery rate of TiO 2 in slag is 99.76%. Under the condition of high basicity, the smelting temperature of 1600 °C, basicity of ...
Based on the fundamental characteristics of high chromium vanadium-titanium magnetite (HCVTM), the effects of roasting temperature and roasting time on the phase transition and oxidation ...
Vanadium‑titanium magnetite can be used effectively by sintering and pelletizing. A number of previous studies have demonstrated that the amount of liquid phase produced …
Vanadium ore mainly includes vanadium-titanium magnetite and weakly magnetic iron ore containing vanadium and titanium, such as vanadium-titanium hematite, vanadium-titanium limonite, ... The grade of TiO 2 in the tailings remains between 42.27% and 44.43%, while the recovery gradually decreases from 61.04% to 40.58% as the grinding fineness ...
The typical method used to recover valuable elements from VTM concentrates is by the blast furnace smelting method. However, titanium is nearly all wasted in the form of blast …
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 vanadium-titanium …
rutile. Titanium is common in magnetite, with Ti-rich (2–20%) varieties termed titaniferous magnetite or tita nomagnetite. Other less common titanium oxide-bearing minerals are pseudobrookite Fe 2 TiO 5, perovskite CaTiO 3, geikielite (Mg,Fe)TiO 3 and pyrophanite MnTiO 3. The only silicate mineral with titanium as a major component is titanite,
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. ... X.G. Zhou, Z.C. Liu, and X.W. Lv, Solid-state reaction and diffusion behaviors of CaFe 2 O 4 and TiO 2 at 1373 K to ...
When the temperature exceeded 1130 °C, iron titanium oxides were reduced to Fe and TiO 2. Conclusions. The reduction behavior of vanadium titanium magnetite concentrate with different hydrogen volume fractions under isothermal conditions at 1100 °C was studied, and the results are summarized as follows: (1)
