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11.
Подробнее
24
B14
Baeshov, A. B.
Synthesis of thallium sulphate in a sulfuric acid solution at polarization by current. [Текст] / A. B. Baeshov, E. Zh. Tuleshova, G.T. Sarbayeva, M. A. Ozler, M. T. Sarbayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 47-54
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
potentiodynamic polarization curves -- electrochemical behavior -- thallium -- sulfuric acid -- current density
Аннотация: In this work, the kinetics of electrochemical oxidation-reduction of thallium in aqueous solutions of sulfuric acid is studied by potentiometry. To characterize the mechanism of thallium electrooxidation, the following parameters were calculated: the order of the reaction and the effective activation energy of the process. The impact of electrolysis modes: current density, concentration and temperature of the electrolyte on the dimensional charac-teristics of the obtained thallium (I) sulfate was investigated.
Держатели документа:
WKU
Доп.точки доступа:
Tuleshova, E. Zh.
Sarbayeva, G.T.
Ozler, M. A.
Sarbayeva, M.T.
B14
Baeshov, A. B.
Synthesis of thallium sulphate in a sulfuric acid solution at polarization by current. [Текст] / A. B. Baeshov, E. Zh. Tuleshova, G.T. Sarbayeva, M. A. Ozler, M. T. Sarbayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 47-54
Рубрики: chemistry
Кл.слова (ненормированные):
potentiodynamic polarization curves -- electrochemical behavior -- thallium -- sulfuric acid -- current density
Аннотация: In this work, the kinetics of electrochemical oxidation-reduction of thallium in aqueous solutions of sulfuric acid is studied by potentiometry. To characterize the mechanism of thallium electrooxidation, the following parameters were calculated: the order of the reaction and the effective activation energy of the process. The impact of electrolysis modes: current density, concentration and temperature of the electrolyte on the dimensional charac-teristics of the obtained thallium (I) sulfate was investigated.
Держатели документа:
WKU
Доп.точки доступа:
Tuleshova, E. Zh.
Sarbayeva, G.T.
Ozler, M. A.
Sarbayeva, M.T.
12.
Подробнее
4
A67
Appazov, N. O.
Obtaining biochar from rice husk and straw. [Текст] / N. O. Appazov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 66-74
ББК 4
Рубрики: Сельское хозяйство
Кл.слова (ненормированные):
biochar -- rice husk -- rice straw -- thermolysis -- recycling -- fertilizer -- renewable fuel
Аннотация: This paper presents the results of research on obtaining biochar from agricultural plant waste such as rice husk and straw. The selection of the optimal conditions for thermolysis, such as the duration and temperature of the process, has been conducted.
Держатели документа:
WKU
Доп.точки доступа:
Bazarbayev, B. M.
Assylbekkyzy, T.
Diyarova, B. M.
Kanzhar, S. A.
Magauiya, S.
Zhapparbergenov, R. U.
Akylbekov, N. I.
Duisembekov, B. A.
A67
Appazov, N. O.
Obtaining biochar from rice husk and straw. [Текст] / N. O. Appazov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 66-74
Рубрики: Сельское хозяйство
Кл.слова (ненормированные):
biochar -- rice husk -- rice straw -- thermolysis -- recycling -- fertilizer -- renewable fuel
Аннотация: This paper presents the results of research on obtaining biochar from agricultural plant waste such as rice husk and straw. The selection of the optimal conditions for thermolysis, such as the duration and temperature of the process, has been conducted.
Держатели документа:
WKU
Доп.точки доступа:
Bazarbayev, B. M.
Assylbekkyzy, T.
Diyarova, B. M.
Kanzhar, S. A.
Magauiya, S.
Zhapparbergenov, R. U.
Akylbekov, N. I.
Duisembekov, B. A.
13.
Подробнее
35
D99
Dzhumadullaeva, S. A.
The kinetics of selective hydrazinolysis of maleic acid on the acid catalyst. [Текст] / S. A. Dzhumadullaeva, A. B. Bayeshov, A. V. Kolesnikov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 53-57
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
maleic acid -- hydrazinolysis -- hydrazide -- catalyst
Аннотация: For the first time, kinetics and the mechanism of the reaction of hydrazinolysis of maleic acid in the presence of cation exchanger resin KU-2-8 in H-form have been studied. The experiments were carried out in a static system in a thermostat glass reactor. It was found that cation exchanger shows high catalytic activity in the studied process - maleic acid conversion was 93%, and maleic hydrazide yield was 90%. The conversion selectivity of maleic acid to maleic hydrazide was 97,8%. The reaction rate was determined from the accumulation of maleic hydrazide. The apparent reaction rate constant (k) was calculated from the second-order reaction rate equation. The effect of initial concentrations of maleic acid and hydrazine hydrate, the temperature on the reaction rate was studied. The first order of maleic acid and hydrazine hydrate is determined. Activation energy of the process found from the Arrhenius dependence is 32,1 kJ/mol. On the basis of kinetic and IR spectroscopic methods, a probable reaction mechanism involving polymer-bound hydrogen ions is proposed.
Держатели документа:
WKU
Доп.точки доступа:
Bayeshov, A.B.
Kolesnikov, A.V.
D99
Dzhumadullaeva, S. A.
The kinetics of selective hydrazinolysis of maleic acid on the acid catalyst. [Текст] / S. A. Dzhumadullaeva, A. B. Bayeshov, A. V. Kolesnikov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 53-57
Рубрики: chemical Technology
Кл.слова (ненормированные):
maleic acid -- hydrazinolysis -- hydrazide -- catalyst
Аннотация: For the first time, kinetics and the mechanism of the reaction of hydrazinolysis of maleic acid in the presence of cation exchanger resin KU-2-8 in H-form have been studied. The experiments were carried out in a static system in a thermostat glass reactor. It was found that cation exchanger shows high catalytic activity in the studied process - maleic acid conversion was 93%, and maleic hydrazide yield was 90%. The conversion selectivity of maleic acid to maleic hydrazide was 97,8%. The reaction rate was determined from the accumulation of maleic hydrazide. The apparent reaction rate constant (k) was calculated from the second-order reaction rate equation. The effect of initial concentrations of maleic acid and hydrazine hydrate, the temperature on the reaction rate was studied. The first order of maleic acid and hydrazine hydrate is determined. Activation energy of the process found from the Arrhenius dependence is 32,1 kJ/mol. On the basis of kinetic and IR spectroscopic methods, a probable reaction mechanism involving polymer-bound hydrogen ions is proposed.
Держатели документа:
WKU
Доп.точки доступа:
Bayeshov, A.B.
Kolesnikov, A.V.
14.
Подробнее
35
Y45
Yermagambet, B. T.
Production of carbon nanofibers based on coal tar and polyacryonitrile by electrospinning method. [Текст] / B. T. Yermagambet, M. K. Kazankapova, A. T. Nauryzbayeva, Zh. M. Kassenova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 72-80
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
carbon nanofiber -- coal tar -- polyacrylonitrile -- electrospinning -- oxidation -- carbonization
Аннотация: The article presents experiments on obtaining composite fibers based on Shubarkol coal tar (CT) and polycarlonitrile (PAN) by electrospinning in a laboratory setup. As a result of energy dispersive X-ray spectroscopy and SEM microscopy, the elemental composition (C-85.83%) and the diameter of the carbon fiber were determined, which ranged from 89.0 nm to 449.8 nm. The resulting CNF was subjected to oxidation in air at 300 °C, the holding time was 1 hour, after which the carbonization process was carried out at 800 °C, followed by cooling to room temperature.
Держатели документа:
WKU
Доп.точки доступа:
Kazankapova, M.K.
Nauryzbayeva, A.T.
Kassenova, Zh.M.
Y45
Yermagambet, B. T.
Production of carbon nanofibers based on coal tar and polyacryonitrile by electrospinning method. [Текст] / B. T. Yermagambet, M. K. Kazankapova, A. T. Nauryzbayeva, Zh. M. Kassenova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 72-80
Рубрики: chemical Technology
Кл.слова (ненормированные):
carbon nanofiber -- coal tar -- polyacrylonitrile -- electrospinning -- oxidation -- carbonization
Аннотация: The article presents experiments on obtaining composite fibers based on Shubarkol coal tar (CT) and polycarlonitrile (PAN) by electrospinning in a laboratory setup. As a result of energy dispersive X-ray spectroscopy and SEM microscopy, the elemental composition (C-85.83%) and the diameter of the carbon fiber were determined, which ranged from 89.0 nm to 449.8 nm. The resulting CNF was subjected to oxidation in air at 300 °C, the holding time was 1 hour, after which the carbonization process was carried out at 800 °C, followed by cooling to room temperature.
Держатели документа:
WKU
Доп.точки доступа:
Kazankapova, M.K.
Nauryzbayeva, A.T.
Kassenova, Zh.M.
15.
Подробнее
35
A92
Augaliev, D. B.
Oxidative dimerization of methane to C2 hydrocarbons. [Текст] / D. B. Augaliev, M. K. Erkibaeva, A. O. Aidarova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 18-24
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
ODM reaction -- C2 hydrocarbons -- SHS method -- temperature of reaction
Аннотация: The purpose of this work is to study the reaction of methane dehydrogenation on new 20%La-10%Ce-20%Mg-50% glycine catalysts prepared by the SHS method to identify the optimal conditions for their preparation, concentration and ratio of metals, the influence of contact time and process temperature on the direction and mechanism of the reaction.
Держатели документа:
WKU
Доп.точки доступа:
Erkibaeva, M.K.
Aidarova, A.O.
Tungatarova, S.А.
Baizhumanova, T.S.
A92
Augaliev, D. B.
Oxidative dimerization of methane to C2 hydrocarbons. [Текст] / D. B. Augaliev, M. K. Erkibaeva, A. O. Aidarova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 18-24
Рубрики: chemical Technology
Кл.слова (ненормированные):
ODM reaction -- C2 hydrocarbons -- SHS method -- temperature of reaction
Аннотация: The purpose of this work is to study the reaction of methane dehydrogenation on new 20%La-10%Ce-20%Mg-50% glycine catalysts prepared by the SHS method to identify the optimal conditions for their preparation, concentration and ratio of metals, the influence of contact time and process temperature on the direction and mechanism of the reaction.
Держатели документа:
WKU
Доп.точки доступа:
Erkibaeva, M.K.
Aidarova, A.O.
Tungatarova, S.А.
Baizhumanova, T.S.
16.
Подробнее
24
N94
Nurdillayeva, R. N.
Dissolution of stanless steel in sodium chloride solution at polarization by non-stationary current. [Текст] / R. N. Nurdillayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 75-81
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
stainless steel -- titanium electrode -- alternating current -- iron (II) ions -- chromium (III)ions -- current density -- and current efficiency
Аннотация: Stainless steel is in great demand due to its mechanical strength, heat resistance, and resistance to corrosive environments. This article presents the result of a study of the electrochemical dissolution behavior of a stainless steel electrode (12X18H10T) at polarization by 50 Hz alternating current in a neutral medium (NaCl). Preliminary experiments have shown that the main processes do not take place when two stainless steel electrodes are polarized with an alternating current. It was observed that by the polarization of the “stainless steel – titanium” pair electrodes with alternating current, the alloy is intensively dissolved with the formation of iron (II) and chromium (III) ions. This is due to the "valve" properties of the oxide layer formed on the surface of the titanium electrode. A change in the value of the current density of the titanium and steel electrodes significantly affects the process of electrochemical dissolution of the alloy. At high current densities, the dissolution rate of the alloy decreases due to the deterioration of the current correcting properties of titanium. With an increase in the electrolyte concentration, the current efficiency is reduced as salt passivation occurs. A maximum value of the current efficiency of dissolution of stainless steel was observed at a current frequency of 50 Hz. High frequencies of the alternating current do not provide an adjustable duration of the anodic half-cycle for the oxidation reaction due to the frequent change of half-cycles of the alternating current. It was observed that increasing the temperature of the electrolyte reduces the current efficiency of the electrochemical dissolution of stainless steel electrodes. The effects of main electrochemical parameters on the electrolysis process have been investigated, and the optimal conditions of the alloy dissolution were established (іТі = 60 kA/m2, іSS = 800 A/m2, [NaCl] = 2.0 M, t = 30, ν = 50 Hz.).
Держатели документа:
WKU
Доп.точки доступа:
Sauirbay, Zh.G.
Bayeshov, A.B.
N94
Nurdillayeva, R. N.
Dissolution of stanless steel in sodium chloride solution at polarization by non-stationary current. [Текст] / R. N. Nurdillayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 75-81
Рубрики: chemistry
Кл.слова (ненормированные):
stainless steel -- titanium electrode -- alternating current -- iron (II) ions -- chromium (III)ions -- current density -- and current efficiency
Аннотация: Stainless steel is in great demand due to its mechanical strength, heat resistance, and resistance to corrosive environments. This article presents the result of a study of the electrochemical dissolution behavior of a stainless steel electrode (12X18H10T) at polarization by 50 Hz alternating current in a neutral medium (NaCl). Preliminary experiments have shown that the main processes do not take place when two stainless steel electrodes are polarized with an alternating current. It was observed that by the polarization of the “stainless steel – titanium” pair electrodes with alternating current, the alloy is intensively dissolved with the formation of iron (II) and chromium (III) ions. This is due to the "valve" properties of the oxide layer formed on the surface of the titanium electrode. A change in the value of the current density of the titanium and steel electrodes significantly affects the process of electrochemical dissolution of the alloy. At high current densities, the dissolution rate of the alloy decreases due to the deterioration of the current correcting properties of titanium. With an increase in the electrolyte concentration, the current efficiency is reduced as salt passivation occurs. A maximum value of the current efficiency of dissolution of stainless steel was observed at a current frequency of 50 Hz. High frequencies of the alternating current do not provide an adjustable duration of the anodic half-cycle for the oxidation reaction due to the frequent change of half-cycles of the alternating current. It was observed that increasing the temperature of the electrolyte reduces the current efficiency of the electrochemical dissolution of stainless steel electrodes. The effects of main electrochemical parameters on the electrolysis process have been investigated, and the optimal conditions of the alloy dissolution were established (іТі = 60 kA/m2, іSS = 800 A/m2, [NaCl] = 2.0 M, t = 30, ν = 50 Hz.).
Держатели документа:
WKU
Доп.точки доступа:
Sauirbay, Zh.G.
Bayeshov, A.B.
17.
Подробнее
35
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
18.
Подробнее
24
C51
Chernyakova, R. M.
Sorption of manganese (II) and vanadium (IV) cations by tagan bentonite in an aqueous medium. [Текст] / R. M. Chernyakova, U. Zh. Jussipbekov, G. Sh. Sultanbayeva, R. A. Kaiynbayeva , N. N. Kozhabekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 68-74
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
bentonite -- montmorillonite -- sorption -- desorption -- degree of sorption -- Mn2 +and V4 +cations
Аннотация: the process of sorption of Mn2 +and V4 +cations by bentonite of the Tagan deposit studied depending on various factors (T, oC; τ, min; S: L ratio; CMnand CV, mg/l). It was found that bentonite exhibits sorption properties with respect to the studied cations in a wide range of pH values (from 1 to 10). The highest degree of their sorption is achieved at the consumption of bentonite 1.5 g per 100 mass. p.of metal-containing solution. The influence of the nature of the cation on the sorption capacity of Tagan bentonite was established. The most intense increase in the degree of sorption of manganese (II) occurs in 15 min with an increase in temperature to 35оС.The highest degree of sorption of V4 +cations is achieved in 60 min at 25°C in weakly concentrated vanadium-containing solutions (50 mg/l V4 +). Bentonite from the Tagandeposit exhibits a lower sorption capacity with respect to V4 +cations as compared to Mn2 +cations, which is due to the nature of the cation.
Держатели документа:
WKU
Доп.точки доступа:
Jussipbekov, U.Zh.
Sultanbayeva, G.Sh.
Kaiynbayeva , R.A.
Kozhabekova , N.N.
C51
Chernyakova, R. M.
Sorption of manganese (II) and vanadium (IV) cations by tagan bentonite in an aqueous medium. [Текст] / R. M. Chernyakova, U. Zh. Jussipbekov, G. Sh. Sultanbayeva, R. A. Kaiynbayeva , N. N. Kozhabekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 68-74
Рубрики: chemistry
Кл.слова (ненормированные):
bentonite -- montmorillonite -- sorption -- desorption -- degree of sorption -- Mn2 +and V4 +cations
Аннотация: the process of sorption of Mn2 +and V4 +cations by bentonite of the Tagan deposit studied depending on various factors (T, oC; τ, min; S: L ratio; CMnand CV, mg/l). It was found that bentonite exhibits sorption properties with respect to the studied cations in a wide range of pH values (from 1 to 10). The highest degree of their sorption is achieved at the consumption of bentonite 1.5 g per 100 mass. p.of metal-containing solution. The influence of the nature of the cation on the sorption capacity of Tagan bentonite was established. The most intense increase in the degree of sorption of manganese (II) occurs in 15 min with an increase in temperature to 35оС.The highest degree of sorption of V4 +cations is achieved in 60 min at 25°C in weakly concentrated vanadium-containing solutions (50 mg/l V4 +). Bentonite from the Tagandeposit exhibits a lower sorption capacity with respect to V4 +cations as compared to Mn2 +cations, which is due to the nature of the cation.
Держатели документа:
WKU
Доп.точки доступа:
Jussipbekov, U.Zh.
Sultanbayeva, G.Sh.
Kaiynbayeva , R.A.
Kozhabekova , N.N.
19.
Подробнее
31.352
N92
Numerical simulation modelling of temperature distribution in the process of coal self-heating in the mined-out spaces [Текст] / N. M. Suleimenov, Sh. K. Shapalov, G. S. Sattarova [и др.] // Известия Национальной Академии наук Республики Казахстан. - 2021. - №2. - Р. 167-173
ББК 31.352
Рубрики: Твердое топливо--Уголь
Кл.слова (ненормированные):
выработанные пространства -- окисление -- самонагревание самовозгорание угля -- распределение температуры -- теплопроводность -- дифференциальные уравнения в частных производных -- численное моделирование -- пакеты прикладных программ
Аннотация: Исследования термодинамических процессов окисления, саморазогрева и самовоспла- менения угля необходимы для изучения зависимости терминальных параметров от множества влияющих факторов. В практике добычи угля подземным способом нередки случаи самовозгорания угля в выработанных пространствах производственных агрегатов (лав). В этом случае одна из задач состоит в определении температуры в произвольной точке бугристо-пористой среды выработанного пространства. Необходимость решения этой сложной задачи обусловлена вероятностью возникновения аварийных ситуаций в местах с взрывоопасной концентрацией метана. Не исключено, что для каждого пласта и сорта угля необходимо разработать, обосновать и принять индивидуальный показатель оценки состояния пожарной опасности. Предлагается систематизировать и методически обрабатывать результаты натурных измерений и наблюдений по анализируемым и расследуемым случаям возникновения эндогенных пожаров на проблемных участках шахт с целью создания бассейновых баз данных для последующих оперативных решений в аварийных ситуациях
Держатели документа:
ЗКУ
Доп.точки доступа:
Suleimenov, N. M.
Shapalov, Sh. K.
Sattarova, G. S.
Sapargaliyeva, В. О.
Imanbayeva, S. B.
Bosak, V. N.
N92
Numerical simulation modelling of temperature distribution in the process of coal self-heating in the mined-out spaces [Текст] / N. M. Suleimenov, Sh. K. Shapalov, G. S. Sattarova [и др.] // Известия Национальной Академии наук Республики Казахстан. - 2021. - №2. - Р. 167-173
Рубрики: Твердое топливо--Уголь
Кл.слова (ненормированные):
выработанные пространства -- окисление -- самонагревание самовозгорание угля -- распределение температуры -- теплопроводность -- дифференциальные уравнения в частных производных -- численное моделирование -- пакеты прикладных программ
Аннотация: Исследования термодинамических процессов окисления, саморазогрева и самовоспла- менения угля необходимы для изучения зависимости терминальных параметров от множества влияющих факторов. В практике добычи угля подземным способом нередки случаи самовозгорания угля в выработанных пространствах производственных агрегатов (лав). В этом случае одна из задач состоит в определении температуры в произвольной точке бугристо-пористой среды выработанного пространства. Необходимость решения этой сложной задачи обусловлена вероятностью возникновения аварийных ситуаций в местах с взрывоопасной концентрацией метана. Не исключено, что для каждого пласта и сорта угля необходимо разработать, обосновать и принять индивидуальный показатель оценки состояния пожарной опасности. Предлагается систематизировать и методически обрабатывать результаты натурных измерений и наблюдений по анализируемым и расследуемым случаям возникновения эндогенных пожаров на проблемных участках шахт с целью создания бассейновых баз данных для последующих оперативных решений в аварийных ситуациях
Держатели документа:
ЗКУ
Доп.точки доступа:
Suleimenov, N. M.
Shapalov, Sh. K.
Sattarova, G. S.
Sapargaliyeva, В. О.
Imanbayeva, S. B.
Bosak, V. N.
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