Phase Evolution Behavior and Oxidation Induration Mechanism …
The quality of vanadium–titanium magnetite sinters is poor. The high-pellet operation of the blast furnace ironmaking process is a feasible method for utilization of the High-chromium Vanadium–titanium magnetite (HVTM). To ensure the basicity of the burden, flux pellets need to be investigated. In this study, HVTM concentrate and CaCO3 …Web
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Vanadium–titanium magnetite ore blend optimization for sinter …
An efficient and clean utilization technique for vanadium‑titanium magnetite based on fluidized bed hydrogen reduction was developed in present study. The effect of reduction temperature, H 2 concentration, reduction time and gas flow rate on the metallization degree of the reduced product were studied. The phase compositions and ...Web
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Characterization and Pre-Concentration of Low-Grade Vanadium-Titanium
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 …Web
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Titanium-Enriched Slag Prepared by Atmospheric Hydrochloric …
Chemical composition of the vanadium–titanium magnetite used (wt.%). TFe TiO 2 V 2 O 5 Cr 2 O 3 MgO CaO Al 2 O 3 SiO 2 MnO SO 3 K 2 O NiO ZnO; 49.96: 13.96: 0.87: 0.45 ... Zhao H.X., Liu Y.H., Qi T. Behaviors of vanadium and chromium in coal-based direct reduction of high-chromium vanadium-bearing titanomagnetite concentrates …Web
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A novel process for recovery of iron, titanium, and vanadium from
A Novel Process for Direct Reduction of Titanium Concentrate Pellets in a Gas-Based Shaft Furnace. Quan Shi Jue Tang Mansheng Chu. Engineering, Materials Science. Journal of Sustainable Metallurgy. ... (using the direct reduction of iron) of titanium-magnetite concentrates of ten CIS deposits are studied by … Expand. 12.Web
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Influence of roasting characteristics on gas-based direct reduction
An efficient and clean utilization technique for vanadium‑titanium magnetite based on fluidized bed hydrogen reduction was developed in present study. The effect of reduction temperature, H 2 concentration, reduction time and gas flow rate on the metallization degree of the reduced product were studied. The phase compositions and ...Web
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A Novel Process for Direct Reduction of Titanium Concentrate
Ilmenite is an important mineral resource containing Fe and Ti, and titanium concentrate can be obtained after beneficiation. Through the preparation of titanium concentrate oxidized pellets, gas-based shaft furnace reduction experiments, and melting and separation experiments, the phase changes during the roasting process of titanium …Web
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Behavior of vanadium during reduction and smelting of vanadium
Influence of V 2 O 5 content on the gas-based direct reduction of hongge vanadium titanomagnetite pellets with simulated shaft ... is demonstrated that diboron trioxide has the function of destroying Si–O–Si bond for the reduction of ultra-high-titanium magnetite. The optimum experimental condition is found to be the reduction temperature ...Web
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Recovery of Vanadium, Titanium, and Iron from Vanadium
A high-titanium slag with 85.32% titanium was obtained by the iron powder induction leaching and alkali leaching. ... VBT is mainly used through blast furnace and coal/gas-based direct reduction-magnetic ... (2018) Study on the sodium oxidation properties of low-iron vanadium-titanium magnetite with high vanadium and titanium. …Web
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Treatment of vanadium–titanium magnetite based on composite
Materials Science JOM 2023 Titanomagnetite concentrate is known for the difficulty of its sintering by traditional sintering process (TSP) because of a high content …Web
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Effect of Smelting Time on Vanadium and Titanium Distribution
Vanadium–titanium magnetite is an important Fe, V, and Ti resource with a highly comprehensive utilization value [1,2,3].Chinese vanadium–titanium magnetite reserves are plentiful but underutilized, with over 18 billion tons of proven vanadium and titanium magnetite reserves in China as of 2019 [].However, because of the complex …Web
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Reducibility Optimization and Reaction Mechanism of High
Based on the conventional blast furnace smelting of vanadium–titanium magnetite, a conventional hematite concentrate was added in HVTM pellets to optimize reduction performances. Overall, this study aims to explore the reduction properties of HVTM pellets and achieve a better basicity scheme, while improving the theoretical basis …Web
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Reduction behaviors of vanadium‑titanium magnetite with H2 via …
Vanadium‑titanium magnetite, a kind of composite ore with iron, vanadium and titanium, has not been utilized on large scale by steel plants. ... The thermodynamic analysis on gas - based reduction of vanadium‑titanium magnetite indicates that the vanadium‑titanium magnetite is more difficult to be reduced than ordinary iron ore, and …Web
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Effects of calcium compounds on the carbothermic reduction
Effects of calcium compounds on the carbothermic reduction of vanadium titanomagnetite concentrate (VTC) were investigated. It was found that calcium compounds had great effects on the metallization rate of the reduction product, the order of the metallization rate of reduction product being CaCO 3 > no additive > CaSO 4 > CaCl …Web
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Treatment of vanadium–titanium magnetite based on composite
ABSTRACT. Adopting conventional sintering process of vanadium-titanium magnetite concentrates has such problems as low tumbler index and RDI due to the high-TiO 2 …Web
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Minerals | Free Full-Text | Experimental Study on Strengthening …
The effects and reduction mechanisms of carbothermic reduction of vanadium–titanium–magnetite were studied by adding various mass fractions of CaF2 ranging from 0%, 1%, 3%, 5% to 7%. The results showed that the proper CaF2 addition could strengthen the carbothermic reduction of vanadium–titanium–magnetite while the …Web
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Effect of B2O3 on the Sintering Process of Vanadium–Titanium …
At present, the industrial utilization of vanadium–titanium magnetite is still based on the blast furnace-converter route. Sinter containing a high proportion of VTM concentrate exhibits a low drum strength and a high proportion of …Web
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Multiple heavy metal distribution and microbial community
Vanadium-titanium (V–Ti) magnetite tailings contain toxic metals that could potentially pollute the surrounding environment. However, the impact of beneficiation …Web
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Efficient Extraction of Vanadium from Vanadium–Titanium Magnetite
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 …Web
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Effects of CaF2 on the direct reduction of beach titanomagnetite …
Adding 10 wt% CaF 2 promoted the growth of MgTi 2 O 5 into a mineral with regular boundary, which created conditions for the recovery of titanium resources. By comparison, the promotion effect of CaF 2 on the increasing the metallization rate of reduction products, aggregation and growth of metallic iron particles was obviously better …Web
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Multiple heavy metal distribution and microbial community
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 …Web
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Hydrogen reduction behaviors and mechanisms of vanadium
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 microscopy and …Web
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Migration Behavior of Valuable Components in Pellets with
Zeng et al. 22 investigated the influence of SiO 2 on the gas-based direct reduction behavior of Hongge vanadium titanomagnetite pellet by hydrogen-rich gases. ... Innovation Research Institute of Comprehensive Utilization Technology for Vanadium-Titanium Magnetite Resources in Liaoxi District, Chaoyang, 122000, People's Republic …Web
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Investigation of Vanadium Titanomagnetite Concentrate Activated
In this work the transfer mechanism is studied for Fe, V, and Ti during activated reduction for determining the optimum reduction regime providing the most …Web
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Integrated Utilization of Vanadium-Titanium Magnetite Tailings for
Lightweight ed ceramics were prepared using 55 wt.% vanadium-titanium magnetite tailings (VTMT) followed by sintering at 1130 °C. In the CaO-MgO-SiO2-Al2O3 ed ceramic quaternary system, the CaO and SiO2 components play an important role in adjusting material properties and controlling phase transition. In this …Web
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Preparation of full tailings-based ceramics and auxiliary …
Panzhihua vanadium-titanium magnetite tailings (VTMT) are generated in the process of iron concentrate selection, with an accumulated storage of about 570 million tons, stacked on both sides of Jinsha River in Panzhihua.Web
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Formation of calcium titanate in the carbothermic reduction
The formation of calcium titanate in the carbothermic reduction of vanadium titanomagnetite concentrate (VTC) by adding CaCO 3 was investigated. Thermodynamic analysis was employed to show the feasibility of calcium titanate formation by the reaction of ilmenite and CaCO 3 in a reductive atmosphere, where ilmenite is …Web
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Treatment of vanadium–titanium magnetite based on composite
ABSTRACT Adopting conventional sintering process of vanadium-titanium magnetite concentrates has such problems as low tumbler index and RDI due to the high-TiO2 content, coarse granularity and poor hydrophilicity. In this experiment, vanadium-titanium magnetite (VTM) is treated by the composite agglomeration process to prepare …Web
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Resource utilization of High-Ti vanadium titanomagnetite: …
The imported vanadium and titanium magnetite with high chrome has a high assimilation temperature (1 335 °C), a bad liquid phase liquidity (liquidity index 1.95), weak strength of binding phase ...Web
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Preparation of titanium mineral from vanadium titanomagnetite
A comparative study of vanadium recovery from titaniferous magnetite using salt, sulphate, and soda ash roast-leach processes [C]//Proceedings of the 3rd Young Professionals Conference. Pretoria: Innovation Hub, 2017: 191âˆ'200. [9] SOLE K C. Recovery of titanium from the leach liquors of titaniferous magnetites by solvent …Web
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