Research of Fluorination Process of Rutile Concentrate

Karelin, V.A.; Strashko, A.N.; Dubrovin, A.V.; Сазонов, А. В.

doi:10.1016/j.proche.2014.11.011

Cited by 7 publications

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“…For the main reaction of interest is the reaction between TiO2 and F2, at different temperatures. The process that took place was described in detail in our previous Procedia Chemistry conference report [19] with the main reactions of the process including: TiO2 (solid) + 2F2 (gas)→ TiF4 (gas) + O2 (gas)…”

Section: Resultsmentioning

confidence: 99%

“…The thermodynamic study of the fluorination of rutile ore concentrates was conducted at temperatures from 300 K to 1800 K. For the main reaction of interest is the reaction between TiO 2 and F 2 , at different temperatures. The process that took place was described in detail in our previous Procedia Chemistry conference report [19] with the main reactions of the process including:…”

Section: Resultsmentioning

confidence: 99%

“…The fluorine gas used in Figure 3. Effect of reaction temperature on concentration of TiF 4 in the product mixture [19]. 1-Ideal condition according to equilibrium measurement; 2-excess of 10% F 2 ; 3-excess of 50% F 2 ; 4-deficiency of 10% F 2 and 5-deficiency of 50% F 2 .…”

Section: Resultsmentioning

confidence: 99%

“…All Rutile concentrates used in the experiment were selected and refined with high TiO 2 content from the Tasky region (Omsk), Russiawhich took place was described in our previous Procedia Chemistry conference report [19]. The refining process is a heat treatment process so there are no loss on ignition (loss of mass on heating) and volatiles.These concentrates have the following composition, % (mass): 93.2 TiO 2 ; 1.8 SiO 2 ; 2.7 FeO + Fe 2 O 3 ; 1.0 Al 2 O 3 ; 0.6 MnO; 0.4 CaO; 0.2 MgO; 0.1 V 2 O 5 .…”

Section: Methodsmentioning

confidence: 99%

“…Fluorination was carried out in a vertical reactor 1 heated by a heating system 18.The process has been carried out, manufactured and equipmentinstalled. The stages and process of supplying materials and gases have been described in the previous report [19]. It includes: temperature of the reactor was determined and controlled using systems 9 and 10(ManoTom, Russia).…”

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Thermodynamics and Kinetics Research of the Fluorination Process of the Concentrate Rutile

Karelin

KARELINA

et al. 2021

Metals

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The growth in the production of titanium metal and its compounds leads to an increase in the amount of toxic waste. As a result, at the legislative level, emissions of such wastes are limited, which leads to a drop in the production of titanium-containing products and a shortage of titanium in the international market. This paper presents the results of the process of fluorination of rutile concentrate from the Tarsky deposit (Russia, Omsk region) with elemental fluorine using a laboratory setup of a special design. For fluorination, samples of rutile concentrate weighing 0.1–1.0 g were used. The particle size distribution of particles varied from 2 × 10−6 to 2 × 10−5 m. To determine the possibility of carrying out the process, the calculation of the change in the logarithm of the equilibrium constant versus temperature was performed. The influence of the following operating parameters on the fluorination process has been studied: various concentrations of F2 in a fluorinating mixture of fluorine with nitrogen; process time from 0 to 9 min; different ratios of the initial solid phase to fluorine (10 and 50% excess of fluorine and 10 and 50% of its deficiency); fluorination temperature in the range of 300–1800 K. A kinetic equation is selected that most accurately describes the fluorination process. The values of the activation energy and the preexponential factor in the kinetic equation are determined. The obtained results show that with an increase in the fluorine content in the fluorinating gas mixture and the temperature of the process, the fluorination rate increases. Optimal conditions for fluorination: temperature—680 K; time—5 min excess fluorine in the fluorinating mixture—20–25%. The obtained results allow to propose and consider the conditions of process execution on industrial equipment.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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confidence: 99%

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