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.
The study of the possibility of beneficiation of ilmenite ores of the Ha Ting deposit (Vietnam) by the method of electromagnetic separation has been carried out. Ilmenite concentrates obtained as a result of enrichment can be used for further processing to obtain pigment titanium dioxide or titanium metal in compact form or in powder form. The enrichment processes of the ilmenite ores of the Vietnamese de-posits have not been sufficiently studied, therefore, for their enrichment, the method of electromagnetic separation, which is most widely used in industrial practice, was used, which provides the required results when enriching ores of complex composition. It is shown that in order to obtain ilmenite concentrates with a high concentration and degree of titanium enrichment, magnetic separation must be carried out in 4 stages with a gradual decrease in the current strength from 11 to 6 A. At the 1st and 2nd stag-es, to ensure the complete release of ilmenite from the ore, the process is carried out at 11 and 9 A. Then, at the 3rd and 4th stages, to increase the concentration and degree of enrichment of ilmenite in the resulting product, the current strength is gradually reduced to 7 and 6 A. As a result, an ilmenite concentrate is obtained with a titanium dioxide concentration of at least 50 % and a degree of enrichment of 49 %. This concentrate can be further used in the process of chemical processing to obtain titanium and its various compounds.
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