Recovering titanium and iron by co-reduction roasting of seaside titanomagnetite and blast furnace dust

Hu, Tianliang; Sun, Tao; Kou, Jue; Geng, Chao; Wang, Xiaoping; Chen, Chao

doi:10.1016/j.minpro.2017.06.003

Cited by 32 publications

(15 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In these studies, calcite (CaCO 3 ) and lime (CaO) were also identified, phases not identified in the sample of BOF slag utilized in this investigation. In the investigations carried out by Hu et al [7] and Zhang et al [37] phases of wustite (FeO), hematite (Fe 2 O 3 ) and magnetite (Fe 3 O 4 ) were found in the BFD just as in the simple analyzed in this study.…”

Section: Chemical Compositionsupporting

confidence: 60%

See 1 more Smart Citation

Behavior of the Dynamic Modulus and Fatigue in Asphalt Mixtures with Blast Oxygen Furnace Slag and Blast Furnace Dust

Ochoa

López

Grimaldo

2021

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

Slag from a Blast Oxygen Furnace (BOF) is produced during the transformation of cast iron, coming from the blast furnace, into steel during the integrated steelmaking process, just as blast furnace dust (BFD) is produced during the transformation of the iron mineral into cast iron. These residues have generated environmental problems due to the accumulation and inadequate disposal thereof. Consequently, this study aims to analyze the use and behavior of the dynamic modulus and the fatigue in asphalt mixtures with partial (50 %) and total (100 %) substitution of the coarse aggregate for BOF slag and the fine aggregate for BFD. The results are compared with the behavior of a mixture elaborated with conventional aggregates. To achieve this objective, the chemical and physical properties of BOF and BFD were determined along with the optimum asphalt cement content, determined using the Ramcodes methodology. Tests were carried out to evaluate the physical characteristics, the dynamic modulus, and the fatigue of each type of mixture. The results of this study demonstrate adequate fatigue behavior and a slight reduction in dynamic modulus in mixtures with BOF and BFD. This allows us to deduce that the use of these residues is feasible and thereby to contribute to sustainable development and the protection of the environment.

show abstract

Section: Chemical Compositionsupporting

confidence: 60%

“…BFD is produced during the transformation process of the iron mineral to cast iron in which this material, coke and limestone are melted at a temperature of approximately 1500°C. During this process, gasses and fine particulate material are generated and recovered in the collectors [7].…”

Section: Introductionmentioning

confidence: 99%

Behavior of the Dynamic Modulus and Fatigue in Asphalt Mixtures with Blast Oxygen Furnace Slag and Blast Furnace Dust

Ochoa

López

Grimaldo

2021

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

show abstract

“…The research and utilization of complex iron ore resources by researchers can not only alleviate the plight of iron ore resource shortage in iron and steel enterprises, but also save a lot of raw material costs for iron and steel enterprises to a large extent [1,2]. Therefore, the development and utilization of non-high-quality vanadia-titania magnetite resources have become a common concern of scholars and steel companies from all over the world [3,4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Incremental Utilization of Unground Sea Sand Ore on the Consolidation and Reduction Behavior of Vanadia–Titania Magnetite Pellets

Xing

Cheng

Gao

et al. 2021

Metals

View full text Add to dashboard Cite

In the iron and steel industry, improving the usage amount of New Zealand sea sand ore as a raw material for ironmaking can reduce the production costs of iron and steel enterprises to a certain extent. In this paper, New Zealand sea sand ore without any grinding pretreatment was used as a raw material, oxidized pellets were prepared by using a disc pelletizer, and the effect of sea sand ore on the performance of green pellets and the metallurgical properties of oxidized pellets was investigated. The effects of sea sand ore on the compressive strength, falling strength, compressive strength of oxidized pellets, and reduction performance were mainly investigated. X-Ray Diffraction (XRD) patterns and Scanning Electron Microscope (SEM) analysis methods were used to discuss the influence of sea sand ore on the microstructure of the pellets’ oxidation and reduction process. As the amount of sea sand ore used increased, the compressive strength of green pellets was gradually decreased, and the falling strength of green pellets and the compressive strength of oxidized pellets were gradually increased. When the amount of sea sand ore used was 40%, the reduction swelling index of pellets was 16.31%. The increase of sea sand ore used made the reduction of pellets suppressed and the reduction rate decreased. When the amount of sea sand ore used increased to 40%, the reduction degree of sea sand ore pellets was only 60.06%. The experimental results in this paper provide specific experimental data for the large-scale application of New Zealand sea sand ore in the blast furnace ironmaking process.

show abstract

“…The previous research has been based on lump TMO by gas-solid and solid-solid reduction, but the degree of reducibility is not very high and most of the ilmenite grains are irreducible [6]. The carbon-or hydrogenbased reduction is used in common [7][8][9][10][11][12]. Pre-treatment by multiple heating to high temperature (1373 K and 1473 K, respectively) and subsequently sudden cooling to room temperature by water successfully increase the porosity as well as many fissures in dense grain, which significantly enhance the degree of reduction of TMO [13].…”

Section: Introductionmentioning

confidence: 99%

Leaching Titaniferous Magnetite Concentrate by Alkaline Aqueous Solution

Guo

Wang

Song

et al. 2021

Mining, Metallurgy & Exploration

View full text Add to dashboard Cite

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 TiO2 in titanium tailings. The titaniferous magnetite concentrate in use contained 12.67% TiO2 and 54.01% Fe. The thermodynamics of the possible reactions and the kinetics of leaching process were analyzed. It was found that decomposing FeTiO3 with NaOH aqueous solution could be carried out spontaneously and the reaction rate was mainly controlled by internal diffusion. The effects of water usage, alkali concentration, reaction time, and temperature on the leaching procedure were inspected, and the products were characterized by X-ray diffraction, scanning electron microscope, and energy dispersive spectroscopy, respectively. After NaOH leaching and magnetic separation, the concentrate, with Fe purity of 65.98% and Fe recovery of 82.46%, and the tailings, with TiO2 purity of 32.09% and TiO2 recovery of 80.79%, were obtained, respectively.

show abstract

Recovering titanium and iron by co-reduction roasting of seaside titanomagnetite and blast furnace dust

Cited by 32 publications

References 6 publications

Behavior of the Dynamic Modulus and Fatigue in Asphalt Mixtures with Blast Oxygen Furnace Slag and Blast Furnace Dust

Behavior of the Dynamic Modulus and Fatigue in Asphalt Mixtures with Blast Oxygen Furnace Slag and Blast Furnace Dust

Effect of Incremental Utilization of Unground Sea Sand Ore on the Consolidation and Reduction Behavior of Vanadia–Titania Magnetite Pellets

Leaching Titaniferous Magnetite Concentrate by Alkaline Aqueous Solution

Contact Info

Product

Resources

About