Modern condition and proposed solutions for processing chloride waste of titanium-magnesium production

Мамутова, А Т; Ultarakova, Almagul; Kuldeev, E. I.; Есенгазиев, Азамат

doi:10.31643/2018/6445.44

Cited by 2 publications

(4 citation statements)

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“…The process of shape change, which leads to the failure of reactors, is due to factors related to the consistent effect of the melt of magnesium chloride, metallic and liquid magnesium, vapor-forming titanium tetrachloride loaded into the reactor, on the one hand. And on the other hand, the effect of a temperature of 1000-1200 °C on the walls of the retort with the simultaneous interaction of the hot air of the furnace containing chlorine vapors [3,4]. As a result of research [7], it was found that the greatest wear of steel 10X18H10T is observed at the boundary of the gas phase with the melt in the zone of the exothermic reaction of titanium tetrachloride with magnesium.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The processes of shape change in such an aggressive environment have not been studied enough (as well as the "handling" of the retort material); another issue is the choice of material for the manufacture of retorts [9,10]. In addition, the optimal dimensions of the retorts and the influence of operating modes are also poorly understood [4].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Under industrial conditions, the formation of a deformation strip, narrowing of the retort in its upper part are observed, which complicates the unloading of the titanium sponge and shortens the service life of the equipment. In recent years, special attention has been paid to increasing the productivity of the process of magnesium-thermal production of titanium sponge, by increasing the volume of the reactor [2][3][4]. As a result, the stressed-strained state of the material of the reactor walls is significantly complicated.…”

Section: Introductionmentioning

confidence: 99%

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Determining the thermoplastic deformation mechanism of titanium reduction reactors and recommendations to increase the reactor service life

Мищенко

Loskutov

Kripak

2022

EEJET

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The object of research reported in this paper is the stressed-strained state of reactors when producing titanium sponge by the magnesium thermal method, taking into consideration the conditions of their operation and the physical and mechanical properties of the materials. The problem considered is the plastic deformation of the reactor in the process of reducing titanium tetrachloride. To solve this task, an axisymmetric geometric model of the reactor was built using a CAD module of the Comsol Multiphysics software package. For the calculation, the Nonlinear Structural Materials module was used. Owing to the method of finite elements, the critical parameters for the formation of the plastic deformation band of the reactor were determined. Modeling the process of thermoplastic deformation of the reactor under the conditions of obtaining titanium sponge has made it possible to determine the temperature gradient in the upper part of the reactor wall, which leads to local plastic deformation of the wall. The solution to the problem of continuing the reactor service would be to prevent overheating (overcooling) of the reactor wall within the resulting temperature. The physical and mechanical parameters of the material of the reactor wall, necessary to prevent the occurrence of an annular band of plastic deformation, have also been determined. It was shown that at ∆T˃∆Tcrit=60 °C, the walls of a 10-ton reactor during the reduction of titanium tetrachloride with magnesium perceive plastic deformation whose maximum value can reach Deformation mechanisms that lead to a change in the shape of the side wall of reactors of magnesium-thermal production of sponge titanium under the action of a heterogeneous temperature field have been determined. The proposed technological solutions are to eliminate local changes in diameter in the upper part of the reactor wall. This will make it possible not only to increase the life of the reactors but will reduce the flow of alloy components into the titanium sponge of nickel, chromium, and iron

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determining the thermoplastic deformation mechanism of titanium reduction reactors and recommendations to increase the reactor service life

Мищенко

Loskutov

Kripak

2022

EEJET

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“…From the commercial perspective, the composition of the rare earth elements in the spent melt of titanium chlorinators (SMTC) is attractive, as the proportion of dysprosium is 57%, neodymium 8%, and cerium is 13% [ [39], [40]]. The authors of work [41] studied the recovery of REE concentrate from Thus, the authors proposed technological flow sheet recovery of REE concentrate from SMTC (figure 4). The results of chemical analysis showed that the content of REE oxalates was 96.0%, while the overall content of the main impurities such as barium and iron oxalates accounted for 3.1%.…”

Section: Introductionmentioning

confidence: 99%

A review of recovery technologies of rare and rare earth metals from wastes generated in titanium and magnesium production

Toishybek¹,

Baigenzhenov²,

Turan³

et al. 2023

KIMS/CUMR/MShKP

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It is acknowledged that titanium and magnesium production wastes pollute the environment, which in the sequence they create an environmental hazard for soils, groundwater and vegetation. Meanwhile, these wastes can be considered secondary resources of rare and rare earth metals. In recent years, the processing of industrial waste has been a new trend for the extraction of rare and rare earth metals, which can partially cover the demand in case of their disposal. This article is devoted to a review of the available literature and articles on the extraction of rare metals from titanium-magnesium production waste using various processing methods. Methods of their utilization are discussed with an emphasis on the extraction of rare and rare earth metals. This review considered waste processing technologies of various pyrometallurgical and hydrometallurgical processes. Technological schemes of various leaching and extraction processes were presented to give a holistic view of waste processing and extraction of rare metals contained in them. In general, the article contains an overview of the works published on the extraction of rare metals, such as REE (rare earth elements), niobium, tantalum and vanadium.

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Modern condition and proposed solutions for processing chloride waste of titanium-magnesium production

Cited by 2 publications

References 0 publications

Determining the thermoplastic deformation mechanism of titanium reduction reactors and recommendations to increase the reactor service life

Determining the thermoplastic deformation mechanism of titanium reduction reactors and recommendations to increase the reactor service life

A review of recovery technologies of rare and rare earth metals from wastes generated in titanium and magnesium production

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