Next Article in Journal
Jianite: Massive Dunite Solely Made of Virtually Pure Forsterite from Ji’an County, Jilin Province, Northeast China
Next Article in Special Issue
Computational Modeling and Prediction on Viscosity of Slags by Big Data Mining
Previous Article in Journal
Embankment Displacement PLAXIS Simulation and Microstructural Behavior of Treated-Coal Gangue
Open AccessArticle

Experimental Study on Strengthening Carbothermic Reduction of Vanadium-Titanium-Magnetite by Adding CaF2

1
School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
2
Research Center of Metallurgical Engineering and Technology of Shaan Xi, Xi’an University of Architecture and Technology, Xi’an 710055, China
3
State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
4
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
*
Authors to whom correspondence should be addressed.
Minerals 2020, 10(3), 219; https://doi.org/10.3390/min10030219
Received: 4 January 2020 / Revised: 13 February 2020 / Accepted: 24 February 2020 / Published: 28 February 2020
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 excessive amounts will weaken the promotive effect, hence the appropriate dosage was determined to be 3 mass%. The CaF2 was favorable for the carbon gasification reaction, where it increased the partial pressure of CO inside briquette and caused the lattice distortion of vanadium–titanium–magnetite. The reaction improved the reduction process and accelerated the reduction rate. The appearance of 3CaO·2SiO2·CaF2 and other complex compounds with low melting point facilitated the aggregation and growth of the slag and the iron, which increased the concentration of iron grains and the aggregation level of the slag. View Full-Text
Keywords: carbothermic reduction; calcium fluoride; vanadium–titanium–magnetite carbothermic reduction; calcium fluoride; vanadium–titanium–magnetite
Show Figures

Figure 1

MDPI and ACS Style

Xing, X.; Du, Y.; Zheng, J.; Chen, Y.; Ren, S.; Ju, J. Experimental Study on Strengthening Carbothermic Reduction of Vanadium-Titanium-Magnetite by Adding CaF2. Minerals 2020, 10, 219.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop