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Tatyana E. Litvinova
professor, Dr.Habil., Professor
Saint Petersburg Mining University
Saint-Petersburg Russia
Personal or department link
professor, Dr.Habil., Professor
Personal or department link
Saint Petersburg Mining University
Saint-Petersburg
Russia
107
Total cited
7
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Co-authors

Articles

  • Date submitted
    2020-10-22
  • Date accepted
    2021-03-02
  • Date published
    2021-05-21

Dynamic simulation of industrial-scale gibbsite crystallization circuit

Population balance model is crucial for improving the method of aluminum hydroxide massive crystallization and enhancing the quality of control over industrial precipitation trains. This paper presents the updated population balance model, which can be used for simulation of industrial-scale precipitation. Processes of birth-and-spread and particle breakage are considered integral parts of the precipitation process along with secondary nucleation, growth and agglomeration of particles. The conceptual difference of the proposed system of equations is its ability to reproduce the oscillatory process that occurs in precipitation circuits as a result of cyclic changes in the quality of the seed surface. It is demonstrated that self-oscillations can occur in the system without any external influence. The updated model is adjusted and verified using historical industrial data. The simulation of seed-recycle precipitation circuit showed an exact correspondence between the calculated dynamic pattern of changes in particle size distribution of aluminum hydroxide and the actual data.

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Vladimir O. Golubev, Tatyana E. Litvinova (2021) Dynamic simulation of industrial-scale gibbsite crystallization circuit. Journal of Mining Institute. Vol 247. p. 88-101. DOI: 10.31897/PMI.2021.1.10
  • Date submitted
    2016-10-14
  • Date published
    2014-12-22

Separation and extraction of lanthanides from low concentrations of raw materials using extraction methods

At the present time, the unique physical and chemical properties of rare earth metals (REM) mean they can find wide application in the metallurgy, mechanical engineering, avionics, petrochemical, laser and glass industries. In metallurgy, rare earth metals using for production of special grades of steel and cast iron. Adding REM can improve their mechanical properties: hardness, toughness, resistance to corrosion. REM are also used for the deoxidation of metals and alloys. The REM production technology from loparite concentrate that already exists in Russia is not enough for the metal-lurgical, oil, glass, ceramic, nuclear and military industries (just 2 % of the world’s REM are produced in Russia). REM for these industrial proposes is purchased in China, which is recog-nized as having a monopoly on the production of rare metals (96% of REM produced world-wide). If we want to supply these needs in future, we will have to produce 10 tons per year of REM, which requires processing all available resources: mono- and polymineral raw materials. One of the most acceptable source of rare earth metals and some rare metals (zirconium, niobium, hafnium) is eudialyte. The world’s biggest deposits of eudialyte are found on the Kola Peninsula in northwest Russia, near the Lovozero mining and processing plant. Eudialyte concentrate is easily decomposed by acids, which explains its layered structure and weak chemical bonds between its constituent groups. The easy leaching process is the main reason that it is processed. In our work the technological possibility of extraction and separation of lanthanides has been shown, using solutions of naphthenic and oleic acid in an inert diluent with a stoichiometric reagent consumption, without the preoxidation step of the cerium to the tetravalent state. The technological parameters and stages of the process have been established.

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T. E. Litvinova, O. V. Cheremisina (2014) Separation and extraction of lanthanides from low concentrations of raw materials using extraction methods. Journal of Mining Institute. Vol 210. p. 78.
  • Date submitted
    2016-11-07
  • Date published
    2013-03-01

Academician N.S.Kurnakov: his life and work

The information about life time of famous chemist and metallurgist N.S.Kurnakov and the capsule review of his scientific achievementsis represented in this paper. The formation of chemical and metallurgical scientific school in Saint Petersburg Mining Institute is shown.

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D. E. Chirkst (2013) Academician N.S.Kurnakov: his life and work. Journal of Mining Institute. Vol 202. p. 9.
  • Date submitted
    2016-11-07
  • Date published
    2013-03-01

Thermodynamic of lanthanum (iii) and samarium (iii) extraction by using stoichiometric concentration solutions of naphtenic acid

Experimental data on solvent extraction of lanthanum (III) and samarium (III) by solutions of naphthenic acid from nitrate medium was obtained. Dependences of distribution coefficient of pH, concentration of organic and aqueous phase was obtained. thermodynamic characteristics of extraction equilibrium was calculated.

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D. S. Lutskii, T. E. Litvinova, D. E. Chirkst, V. A. Lutskaya, S. V. Zhukov (2013) Thermodynamic of lanthanum (iii) and samarium (iii) extraction by using stoichiometric concentration solutions of naphtenic acid. Journal of Mining Institute. Vol 202. p. 92.
  • Date submitted
    2016-11-07
  • Date published
    2013-03-01

Thermodynamic of cerium (III) and europium (III) extraction by using stoichiometric concentration solutions of naphtenic acid

Experimental data on solvent extraction of lanthanum (III) and samarium (III) by solutions of naphthenic acid from nitrate medium was obtained. Dependences of distribution coefficient of pH, concentration of organic and aqueous phase was obtained. thermodynamic characteristics of extraction equilibrium was calculated.

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D. S. Lutskii, T. E. Litvinova, D. E. Chirkst, V. A. Lutskaya, S. V. Zhukov (2013) Thermodynamic of cerium (III) and europium (III) extraction by using stoichiometric concentration solutions of naphtenic acid. Journal of Mining Institute. Vol 202. p. 97.
  • Date submitted
    2016-11-07
  • Date published
    2013-03-01

Extraction of cerium lanthanides by using stoichiometric concentration solution of naphtenic acid

Technology of solvent extraction and separation of cerium lanthanides by solutions of naphthenic acid in o-dimethylbenzene was obtained. The sequence of extraction Eu > Sm > Ce > La from nitrate media was  calculated.

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D. S. Lutskii, T. E. Litvinova, D. E. Chirkst, V. A. Lutskaya, S. V. Khruskin (2013) Extraction of cerium lanthanides by using stoichiometric concentration solution of naphtenic acid. Journal of Mining Institute. Vol 202. p. 102.
  • Date submitted
    2016-11-08
  • Date published
    2013-03-01

Kinetic oxidations of phenol by piroluzit containing minerals

The kinetics parameters of phenol oxidation by MnO2 on the surface of iron-manganese nodules  at pH = 5,5±0,5 at temperature region from 293 till 353 K was described in this paper. The oxidation reaction runs by second order on phenol. At temperature region from 293 till 353 K the limited stage is chemical reaction. The activation energy of oxidation on the surface of iron-manganese nodules is equal 6,65 kJ/mol, and it is less than it’s one for oxidation on MnO2 surface (42,0 kJ/mol). The oxidation products are hydrohinon and less than 10 pier. % p-benzohinon.

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O. V. Cheremisina, M. A. Sulimova, D. E. Chirkst (2013) Kinetic oxidations of phenol by piroluzit containing minerals. Journal of Mining Institute. Vol 202. p. 224.
  • Date submitted
    2016-12-09
  • Date published
    2011-01-01

Separation of cerium lanthanides by using oleic acid

Experimental data on solvent extraction of cerium (III), yttrium (III), lanthanum (III) by solutions of oleinic acid in o-dimethylbenzene was obtained. The possibility of extraction sepa- ration of cerium(III), yttrium(III), lanthanum (III) from nitrate media was   shown.

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D. S. Lutskii, T. E. Litvinova, D. E. Chirkst (2011) Separation of cerium lanthanides by using oleic acid. Journal of Mining Institute. Vol 189. p. 303.