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D. E. Chirkst
D. E. Chirkst

Articles

Metallurgy, physical and chemical regularities of technological processes
  • Date submitted
    2013-01-26
  • Date accepted
    2013-03-05
  • Date published
    2013-07-01

Thermodynamics sorption of complex of cerium ions on the anion exchanger

Article preview

Sorption isotherms was obtained in the form sulfate complex of cerium on the anion exchanger D-403 at a temperature of 298 K and pH = 2÷4 in the presence of various concentrations of magnesium sulfate. Thermodynamic description of the sorption isotherm sulfate complexes of cerium by the method, which based on linearization of the equations of the law of mass action modifed for the reaction of ion exchange. The values of the apparent constants of ion exchange and differential Gibbs energy calculated for the ions of Ce(SO 4 ) - 2 .

How to cite: Ponomareva , M. A., Cheremisina , O. V., & Chirkst , D. E. (2013). Thermodynamics sorption of complex of cerium ions on the anion exchanger. Journal of Mining Institute, 206, 135.
Without section
  • Date submitted
    2012-09-28
  • Date accepted
    2012-11-28
  • Date published
    2013-03-01

Academician N.S.Kurnakov: his life and work

Article preview

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.

How to cite: Chirkst , D. E. (2013). Academician N.S.Kurnakov: his life and work. Journal of Mining Institute, 202, 9.
Without section
  • Date submitted
    2012-09-15
  • Date accepted
    2012-11-20
  • Date published
    2013-03-01

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

Article preview

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.

How to cite: Lutskii , D. S., Litvinova , T. E., Chirkst , D. E., Lutskaya , V. A., & Zhukov , S. V. (2013). Thermodynamic of lanthanum (iii) and samarium (iii) extraction by using stoichiometric concentration solutions of naphtenic acid. Journal of Mining Institute, 202, 92.
Without section
  • Date submitted
    2012-09-30
  • Date accepted
    2012-11-24
  • Date published
    2013-03-01

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

Article preview

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.

How to cite: Lutskii , D. S., Litvinova , T. E., Chirkst , D. E., Lutskaya , V. A., & Zhukov , S. V. (2013). Thermodynamic of cerium (III) and europium (III) extraction by using stoichiometric concentration solutions of naphtenic acid. Journal of Mining Institute, 202, 97.
Without section
  • Date submitted
    2012-09-13
  • Date accepted
    2012-11-02
  • Date published
    2013-03-01

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

Article preview

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.

How to cite: Lutskii , D. S., Litvinova , T. E., Chirkst , D. E., Lutskaya , V. A., & Khruskin , S. V. (2013). Extraction of cerium lanthanides by using stoichiometric concentration solution of naphtenic acid. Journal of Mining Institute, 202, 102.
Without section
  • Date submitted
    2012-09-01
  • Date accepted
    2012-11-08
  • Date published
    2013-03-01

Kinetic oxidations of phenol by piroluzit containing minerals

Article preview

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.

How to cite: Cheremisina , O. V., Sulimova , M. A., & Chirkst , D. E. (2013). Kinetic oxidations of phenol by piroluzit containing minerals. Journal of Mining Institute, 202, 224.
Technologies in chemistry, concentration and metallurgy. Safety problems
  • Date submitted
    2011-09-21
  • Date accepted
    2011-11-17
  • Date published
    2012-03-01

Separation of iron (III), aluminum and lanthanides extraction by naphthenic acids

Article preview

Extraction of iron (III) from nitrate solutions by acid in 1,2-dymethilbenzine was investigated. Dependences of pH and distribution coefficient was  obtained.  Optimal iron (III) and REM separation conditions was  acquired.

How to cite: Zhurov , S. V., Litvinova , T. E., & Chirkst , D. E. (2012). Separation of iron (III), aluminum and lanthanides extraction by naphthenic acids. Journal of Mining Institute, 197, 221.
Technologies in chemistry, concentration and metallurgy. Safety problems
  • Date submitted
    2011-09-20
  • Date accepted
    2011-11-06
  • Date published
    2012-03-01

Extraction separation of aluminum, manganese and cerium group lanthanides by using oleic acid

Article preview

The data on the extraction of aluminum and manganese by solution of oleic acid in o-xylene. The possibility of extraction separation  of aluminum, manganese and  cerium group lanthanides  by solvent extraction from nitrate  media.

How to cite: Zhukov , S. V., Litvinova , T. E., & Chirkst , D. E. (2012). Extraction separation of aluminum, manganese and cerium group lanthanides by using oleic acid. Journal of Mining Institute, 197, 226.
Metallurgy, physical and chemical regularities of technological processes
  • Date submitted
    2011-08-14
  • Date accepted
    2011-10-08
  • Date published
    2012-02-01

Removal of samarium (3+) and cerium (3+) from nitrate and chloride solutions by ion flotation

Article preview

The ion flotation of cerium (3+) and samarium (3+) from nitrate solutions by use of sodium dodecyl sulphate as a collector with addition of sodium chloride has been stated. The ratio of distribution coefficients and separation coefficient as function of the pH-aqueous phase with different concentration of chloride-ions has been analyzed. The separation coefficient has rise  from 1,3 till 4,75 when chloride has been  added.

How to cite: Dzhevaga , N. V., Chirkst , D. E., Lobacheva , O. L., & Grigoreva , L. V. (2012). Removal of samarium (3+) and cerium (3+) from nitrate and chloride solutions by ion flotation. Journal of Mining Institute, 196, 121.
Physical chemistry, benefication and metallurgy
  • Date submitted
    2010-07-02
  • Date accepted
    2010-09-29
  • Date published
    2011-01-01

Separation of cerium lanthanides by using oleic acid

Article preview

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.

How to cite: Lutskii , D. S., Litvinova , T. E., & Chirkst , D. E. (2011). Separation of cerium lanthanides by using oleic acid. Journal of Mining Institute, 189, 303.
Without section
  • Date submitted
    2005-09-24
  • Date accepted
    2005-10-18
  • Date published
    2006-04-01

Extraction of cerium(III) and yttrium(III) by naphthenic acid from chloride media

Article preview

Data on the extraction of cerium(III) and yttrium(III) by naphthenic acid solution in o-xylene from chloride media were obtained. The experiment showed W-shaped dependence of the distribution coefficient of cerium(III) and yttrium(III) on the Cl content in the equilibrium aqueous phase. The minima of the dependence are explained by the formation of non-extractable complexes MeCl 2 +and MeOH 2 +, the maxima - by the increase in the degree of dissociation of naphthenic acid and the increase in the ionic strength of the solution.

How to cite: Chirkst , D. E., Litvinova , T. E., Starshinova , V. S., & Lutskii , D. S. (2006). Extraction of cerium(III) and yttrium(III) by naphthenic acid from chloride media. Journal of Mining Institute, 169(4), 204-208.
Without section
  • Date submitted
    2005-09-04
  • Date accepted
    2005-10-07
  • Date published
    2006-04-01

Solubility of cerium(III) phosphate at different temperatures and concentrations of ortho-phosphoric acid

Article preview

The thermodynamic calculation of solubility and ionic equilibria in phosphoric acid solutions of cerium(III) allowed us to estimate the ionic composition of solutions, describe the mechanism of crystallization and dissolution processes СеРО 4 ·0.5H 2 O, determine the dependence of solubility on temperature and concentration of solutions.

How to cite: Chirkst , D. E., & Cheremisina , O. V. (2006). Solubility of cerium(III) phosphate at different temperatures and concentrations of ortho-phosphoric acid. Journal of Mining Institute, 169(4), 227-230.
Without section
  • Date submitted
    2005-09-27
  • Date accepted
    2005-10-08
  • Date published
    2006-04-01

Thermodynamic calculation of solubility of rare earth metal phosphates at different temperatures and concentrations of ortho-phosphoric acid

Article preview

The thermodynamic calculation of oxygen solubility and ionic standing in solutions of cerium(III) phosphate acids allowed us to estimate the ionic composition of solutions and describe the course of crystallization and dilution processes of SePO 4 -0.5H 2 O, as well as to determine the dependence of oxygen solubility on temperature and concentration of solutions.

How to cite: Chirkst , D. E., & Cheremisina , O. V. (2006). Thermodynamic calculation of solubility of rare earth metal phosphates at different temperatures and concentrations of ortho-phosphoric acid. Journal of Mining Institute, 169(4), 219-226.
Without section
  • Date submitted
    2005-09-04
  • Date accepted
    2005-10-20
  • Date published
    2006-04-01

Investigation of kinetics of sorption of nickel cations by pyrolusite-containing sorbent

Article preview

Kinetic characteristics of the process of nickel cations sorption by ferromanganese nodules were determined: reaction rate constants at different temperatures, apparent activation energy of the process.

How to cite: Chirkst , D. E., Cheremisina , O. V., Ivanov , M. V., Chistyakov , A. A., & Zhadovskii , I. T. (2006). Investigation of kinetics of sorption of nickel cations by pyrolusite-containing sorbent. Journal of Mining Institute, 169(4), 213-218.
Without section
  • Date submitted
    2005-09-27
  • Date accepted
    2005-10-21
  • Date published
    2006-04-01

Kinetics of iron(II) sorption by inorganic sorbent-iron-manganese nodules

Article preview

Kinetic characteristics of the process of iron(II) sorption by ferromanganese nodules have been found: reaction rate constants at different temperatures, apparent activation energy of the process. The limiting stage of the process, which is a redox reaction of the first order, was determined.

How to cite: Chirkst , D. E., Cheremisina , O. V., Ivanov , M. V., & Chistyakov , A. A. (2006). Kinetics of iron(II) sorption by inorganic sorbent-iron-manganese nodules. Journal of Mining Institute, 169(4), 209-212.
Without section
  • Date submitted
    2005-09-10
  • Date accepted
    2005-10-23
  • Date published
    2006-04-01

Extraction of cerium(III) and yttrium(III) by carboxylic acids from nitrate media

Article preview

Experimental data on the solvate extraction of cerium(III) and yttrium(III) by solutions of oleic and naphthenic acids in o-dimethylbenzene were obtained. After mathematical analysis of the dependences of the distribution coefficient on pH and the composition of the organic and aqueous phases, the structure and composition of the solvate complexes were determined, as well as the values of Gibbs free energies and equilibrium constants of the reaction.

How to cite: Chirkst , D. E., Litvinova , T. E., Starshinova , V. S., Roshchin , G. S., & Lutskii , D. S. (2006). Extraction of cerium(III) and yttrium(III) by carboxylic acids from nitrate media. Journal of Mining Institute, 169(4), 196-203.
Without section
  • Date submitted
    2005-09-14
  • Date accepted
    2005-10-14
  • Date published
    2006-04-01

Preparation of zirconium-containing materials on the basis of eudialyte concentrate

Article preview

The technology of obtaining zirconium oxide, zirconium halide compounds (chlorides, fluorides) from eudialyte concentrate with subsequent production of zirconium powders, titanium-zirconium and aluminum-zirconium ligatures by metal-thermal method has been investigated. It is shown that different zirconium materials can be obtained by applying different reducing agents: sodium, magnesium or aluminum-magnesium alloys.

How to cite: Aleksandrovskii , S. V., Chirkst , D. E., Litvinova , T. E., Geilikman , M. B., Gaidamako , I. M., & Erdanov , A. R. (2006). Preparation of zirconium-containing materials on the basis of eudialyte concentrate. Journal of Mining Institute, 169(4), 47-52.
Without section
  • Date submitted
    2005-09-21
  • Date accepted
    2005-10-01
  • Date published
    2006-04-01

Commonwealth of metallurgists and chemists of Mining Institute over 230 years

Article preview

The history of the formation of the departments of the metallurgical faculty and chemical-metallurgical school of the Mining Institute is presented. A brief review of the main stages of development of metallurgical and chemical sciences is given. The main achievements in the field of metallurgy and chemistry, which served as a basis for the modern scientific schools of the metallurgical faculty, are shown.

How to cite: Chirkst , D. E. (2006). Commonwealth of metallurgists and chemists of Mining Institute over 230 years. Journal of Mining Institute, 169(4), 7-15.
Appraisal, integrated development of deposits and deep processing of strategically important raw materials
  • Date submitted
    2005-01-01
  • Date accepted
    2005-02-18
  • Date published
    2005-08-01

Physico-chemical bases of deep processing of poor rare-earth raw materials

Article preview

The purpose of this research is to develop a new method of extraction and separation of rare earth metals, which will be effective in hydrometallurgical processes, i.e. in the processing of eudialyte concentrate. The task of the research is the experimental determination of distribution and separation coefficients in solvent extraction of rare earth metals from aqueous solutions with organic extractants, as well as the calculation of the extraction mechanism and thermodynamic constants on the basis of experimental data.

How to cite: Chirkst , D. E., Litvinova , T. E., Cheremisina , O. V., & Starshinova , V. S. (2005). Physico-chemical bases of deep processing of poor rare-earth raw materials. Journal of Mining Institute, 166, 31-33.
Without section
  • Date submitted
    2004-12-03
  • Date accepted
    2005-01-14
  • Date published
    2005-07-01

St. Petersburg Mining Institute - the cradle of chemical and metallurgical school of Russia

Article preview

The development of the chemical and metallurgical school of the St. Petersburg Mining Institute from the establishment of the university to the present time is shown. The main achievements in the field of metallurgy and chemistry, which served as a basis for the development of modern scientific schools of the metallurgical faculty, are presented.

How to cite: Shalygin , L. M., & Chirkst , D. E. (2005). St. Petersburg Mining Institute - the cradle of chemical and metallurgical school of Russia. Journal of Mining Institute, 165, 7-9.
Without section
  • Date submitted
    2004-12-05
  • Date accepted
    2005-01-30
  • Date published
    2005-07-01

Application of the second beginning of thermodynamics to electrolysis of sodium chloride solution

Article preview

In this paper it is shown that if in the electrolytic process the charge carriers do not participate in the electrode reaction, the Faraday minimum is not fulfilled. In this case, the electrolytic process agrees with the second law of thermodynamics in the following formulation "The work of the flow of electricity in an electrochemical system is spent on chemical reaction, heat generation and entropy drop due to physical processes".

How to cite: Itkin , G. E., Gorshenin , A. P., & Chirkst , D. E. (2005). Application of the second beginning of thermodynamics to electrolysis of sodium chloride solution. Journal of Mining Institute, 165, 88-90.
Appraisal, integrated development of deposits and deep processing of strategically important raw materials
  • Date submitted
    2003-08-06
  • Date accepted
    2003-09-20
  • Date published
    2004-03-01

Physico-chemical bases of deep processing of poor rare-earth raw materials

Article preview

Extraction of cerium (3+) with tributyl phosphate was studied. The extraction constants were calculated from the dependences of the distribution coefficient on the concentration of salvent and extractant. According to their values, cerium salts are arranged in the series chloride < sulfate < nitrate corresponding to the Pearson reduction of the "hardness" of anions.

How to cite: Chirkst , D. E., Litvinova , T. E., Cheremisina , O. V., & Ivanov , M. V. (2004). Physico-chemical bases of deep processing of poor rare-earth raw materials. Journal of Mining Institute, 158, 36-38.
Safety problems of radiation, electromagnetic and other dangerous influence on people
  • Date submitted
    2002-08-16
  • Date accepted
    2002-09-18
  • Date published
    2003-03-01

Physical and chemical substantiation of decontamination of the 5th district of Vasilievsky Island in St. Petersburg from strontium-90 contamination

Article preview

In order to calculate parameters of purification of soils from 90 Sr the exchange isotherm of Sr 2+ Ha cations of iron (III) between Cambrian clay and aqueous solution with pH = 3 was studied. Isotherms of joint cation adsorption in joint presence are described by the Langmuir equation. Using the values of the Langmuir constants, the Gibbs constant and energy of ion exchange equal to 15 and -6.7 kJ/mol, respectively, were calculated. These values coincide with those calculated from the individual adsorption isotherms of Sr 2+ and Fe (III) cations on clay. According to the obtained constants it is possible to deactivate soils from 90 Sr contamination by means of ion-exchange washing with solutions of iron (III) salts, which is confirmed by field studies in the 5th quarter of Vasilievsky Island. The performed technical-economic assessment of the decontamination of the 5th quarter shows that the washing cleaning will give an economic effect of about 150 million rubles compared to soil removal and burial.

How to cite: Chirkst , D. E., Litvinova , T. E., Cheremisina , O. V., & Ivanov , M. V. (2003). Physical and chemical substantiation of decontamination of the 5th district of Vasilievsky Island in St. Petersburg from strontium-90 contamination. Journal of Mining Institute, 154, 32-37.
Metallurgy
  • Date submitted
    2001-06-07
  • Date accepted
    2001-07-15
  • Date published
    2002-01-01

Study of ionic exchange in soils for the purpose of their purification from heavy metals

Article preview

Adsorption of strontium and iron from aqueous solutions on various minerals was studied. According to the sorption capacity, the studied minerals can be arranged in the following sequence: Cambrian clay ~ kaolinite > potassium feldspar > albite > oligoclase. This sequence correlates well with the specific surface of the studied minerals determined by thermal argon desorption and their exchange capacity determined by methylene blue adsorption. Coefficients of distribution of Sr 2+ and Fe 3+ between minerals and aqueous solutions and ionic exchange constants between Sr 2+ and Fe 3+ were determined. The value of the latter value was 23.6 for albite and 17.1 for oligoclase. Therefore, aqueous solutions of iron (III) may be recommended for cleaning soils from strontium contamination.

How to cite: Ivanov , M. V., & Chirkst , D. E. (2002). Study of ionic exchange in soils for the purpose of their purification from heavy metals. Journal of Mining Institute, 150(1), 116-119.
Safety problems of radiation, electromagnetic and other dangerous influence on people
  • Date submitted
    2000-10-10
  • Date accepted
    2000-11-24
  • Date published
    2001-05-01

Development of physico-chemical bases and pilot technology for decontamination of soils from contamination by cesium and strontium radionuclides

Article preview

It is experimentally proved that adsorption of Fe(3+) and Sr(2+) cations on Cambrian clay is described by the Langmuir isotherm. The adsorption limit is 0.026 and 0.034 mol/kg, respectively, and the capacity of the clay is 73±5 mEq/kg. The landing sites of cations are 38.0 and 28.6 Å 2 , respectively, and the radii of hydrated cations are 348 and 302 pm. The latter value agrees with the Stokes radius of 309 pm. The Langmuir constants are 731 and 294, respectively, and the distribution coefficients between the solid and liquid phases at rn = 3.0+3.5 are 27±4 and 10±1.8. The ion exchange constant for the reaction ½ Sr 2+ (s) + 1/3 Fe 3+ (aq) ↔ ½ Sr 2+ (aq) + 1/3 Fe 3+ (s) is 0.95. Based on the data obtained, it is feasible to clean the pounds from strontium-90 contamination by washing with a Fe(3+) salt solution. Field tests in the 5th quarter of Vasilievsky Island of St. Petersburg confirmed the conclusion. The initial specific radioactivity of the pound reached up to 1.07 10 -4 Ci/kg. At heap leaching the purification degree of 60% was obtained, in conditions of convective leaching 90%. A formula for calculating the conditions for obtaining a given degree of purification is proposed.

How to cite: Chirkst , D. E., Litvinova , T. E., Cheremisina , O. V., Streletskaya , M. I., Ivanova , M. V., & Mironenkova , N. A. (2001). Development of physico-chemical bases and pilot technology for decontamination of soils from contamination by cesium and strontium radionuclides. Journal of Mining Institute, 149(5), 37-40.
Without section
  • Date submitted
    2000-07-25
  • Date accepted
    2000-08-22
  • Date published
    2001-02-01

Extraction of rare metals and radionuclides from lean raw materials and soils

Article preview

The content of rare-earth metals (REM) in Kola apatite is about 1%. In the production of concentrates over 8 million tons per year, more than 80 thousand tons of REM are dumped into waste dumps annually, polluting the environment. The main bulk of apatite is processed according to the sulfuric acid scheme to produce extractive phosphoric acids. To extract rare-earth metals from phosphoric acid streams with a capacity of 45 t/h, it is necessary to develop a process lasting several minutes, which does not affect the basic technology and does not require expensive costs of reagents. Crystallization of lanthanide combinations on inoculum directly from production solutions of extractive phosphoric acids meets the requirements. Another pressing problem is the purification of soils contaminated with heavy metals and radionuclides. In laboratory and natural conditions, the purification of soils from 90Sr contamination of the 5th quarter of Vasilievsky Island and Novozybkovsky district of the Bryansk region from 137Cs contamination has been studied. Among different methods of soil decontamination, the most cost-effective and suitable for large soil masses and large territories is soil washing with diluted solutions of mixtures of ammonium and iron (3+) salts. This method can also be used to clean soils from heavy metal contamination in mining regions.

How to cite: Chirkst , D. E., Litvinova , T. E., & Cheremisina , O. V. (2001). Extraction of rare metals and radionuclides from lean raw materials and soils. Journal of Mining Institute, 147, 186-193.