База данных: Статьи
Страница 54, Результатов: 665
Отмеченные записи: 0
531.
Подробнее
35
K17
Kalmakhanova, M. S.
New adsorbents developed from netural clays to remove ni (II) from wastewater. [Текст] / M. S. Kalmakhanova, А. Amantaikyzy, J. L. Diaz de Tuesta, G. A. Seitbekova [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 45-52
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
clay -- adsorption -- nickel -- heavy metal -- wastewater -- pillared clay
Аннотация: This work deals with the development of materials based on natural clays and on pillared clays and further application in the the adsorption of Ni (II), used as model pollutant, from aqueous solution. The starting natural clay (montmorillonite) was obtained in a deposit of Kazakhstan (Asa), and two additional samples were prepared by treatment of the natural clay with acid and by pillarization with Fe2+and Zn2+.
Держатели документа:
WKU
Доп.точки доступа:
Amantaikyzy, А.
Diaz de Tuesta, J. L.
Seitbekova, G. A.
Darmenbaeva, A. S.
Reimbaeva, S.
K17
Kalmakhanova, M. S.
New adsorbents developed from netural clays to remove ni (II) from wastewater. [Текст] / M. S. Kalmakhanova, А. Amantaikyzy, J. L. Diaz de Tuesta, G. A. Seitbekova [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 45-52
Рубрики: chemical Technology
Кл.слова (ненормированные):
clay -- adsorption -- nickel -- heavy metal -- wastewater -- pillared clay
Аннотация: This work deals with the development of materials based on natural clays and on pillared clays and further application in the the adsorption of Ni (II), used as model pollutant, from aqueous solution. The starting natural clay (montmorillonite) was obtained in a deposit of Kazakhstan (Asa), and two additional samples were prepared by treatment of the natural clay with acid and by pillarization with Fe2+and Zn2+.
Держатели документа:
WKU
Доп.точки доступа:
Amantaikyzy, А.
Diaz de Tuesta, J. L.
Seitbekova, G. A.
Darmenbaeva, A. S.
Reimbaeva, S.
532.
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.
533.
Подробнее
35
K17
Kairbekov, Zh. K.
Investigation of the catalytic and isomerization activity of multi-component skeletal nickel catalysts in the hydrogenation of hexene -1. [Текст] / Zh. K. Kairbekov, S. M. Suimbayeva, I. M. Jeldybayeva, E. T. Yermoldina // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - p. 58-64
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
catalyst -- hydrogenation -- hexеne-1 -- skeletal nickel -- activity -- selectivity -- migration -- alloy
Аннотация: In this work, the effect of the amount of catalyst, modifying additives, and the phase composition of the alloys on the catalytic and isomerizing activity of skeletal in the hydrogenation reaction of hexane-1 is investigated.
Держатели документа:
WKU
Доп.точки доступа:
Suimbayeva, S. M.
Jeldybayeva, I. M.
Yermoldina, E. T.
K17
Kairbekov, Zh. K.
Investigation of the catalytic and isomerization activity of multi-component skeletal nickel catalysts in the hydrogenation of hexene -1. [Текст] / Zh. K. Kairbekov, S. M. Suimbayeva, I. M. Jeldybayeva, E. T. Yermoldina // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - p. 58-64
Рубрики: chemical Technology
Кл.слова (ненормированные):
catalyst -- hydrogenation -- hexеne-1 -- skeletal nickel -- activity -- selectivity -- migration -- alloy
Аннотация: In this work, the effect of the amount of catalyst, modifying additives, and the phase composition of the alloys on the catalytic and isomerizing activity of skeletal in the hydrogenation reaction of hexane-1 is investigated.
Держатели документа:
WKU
Доп.точки доступа:
Suimbayeva, S. M.
Jeldybayeva, I. M.
Yermoldina, E. T.
534.
Подробнее
36.92
E20
Economic impact of the pandemic on the meat hub in Kazakhstan [Текст] / G. M. Zhurynov , G. I. Abdikerimova , А. А. Turlybekova [и др.] // Қазақстан Республикасы ұлттық ғылым академиясының баяндамалары. - 2021. - №4. - Р. 50-56
ББК 36.92
Рубрики: Производство мяса и мясных продуктов
Кл.слова (ненормированные):
мясная отрасль -- АПК -- скот -- мясо -- мясные продукты -- колбасные изделия -- полуфабрикаты -- консервы
Аннотация: Мясная промышленность входит в число социально значимых отраслей АПК. Необходимость развития мясной отрасли АПК объясняется ростом потребительского спроса на мясо и мясные продукты, средней степенью инвестиционной активности и сравнительно высокими показателями зависимости от импорта. Специфика развития пищевой и перерабатывающей промышленности и, в частности, мясной отрасли, а также развитие современных фундаментальных и прикладных исследований в области продовольственного сырья и продуктов питания тесно и органически связаны с необходимостью обеспечить высококачественным и безопасным продовольствием население страны при данном уровне развития аграрного сектора нуждающегося в постоянной поддержке государства, и повышении платежеспособного спроса, с целью обеспечения продовольственной безопасности Казахстана. Предмет исследования. Проведен анализ показателей по объемам переработки скота, производства мяса и мясных продуктов с 2017 г. по ноябрь 2020 г. и определены основные направления развития отрасли на перспективу до 2025 г. Цель и задачи исследования. Изучение тенденций развития мясной отрасли АПК, с учетом общих направлений «науки о мясе» и смежных отраслей пищевой и перерабатывающей промышленности АПК. Обоснована необходимость в увеличении производственных мощностей предприятий по убою, первичной переработке скота и производству мясных изделий за счет строительства современных высокотехнологичных специализированных и комбинированных предприятий (мясохладобоен, мясокомбинатов) и реконструкции действующих. Научная новизна работы состоит в обеспечении комплексной механизации и автоматизации процессов производства для увеличения производительности, и безопасности труда и соблюдения жестких ветеринарно-санитарных требований, отвечающих международным стандартам качества и безопасности (повышение производительности труда на 10% за счет комплексной механизации и автоматизации производственных процессов и сокращения доли тяжелого ручного труда).
Держатели документа:
ЗКУ
Доп.точки доступа:
Zhurynov , G.M.
Abdikerimova , G.I.
Turlybekova , А.А.
Sarkulova , N.K.
Abdrakhmanova , M.B.
E20
Economic impact of the pandemic on the meat hub in Kazakhstan [Текст] / G. M. Zhurynov , G. I. Abdikerimova , А. А. Turlybekova [и др.] // Қазақстан Республикасы ұлттық ғылым академиясының баяндамалары. - 2021. - №4. - Р. 50-56
Рубрики: Производство мяса и мясных продуктов
Кл.слова (ненормированные):
мясная отрасль -- АПК -- скот -- мясо -- мясные продукты -- колбасные изделия -- полуфабрикаты -- консервы
Аннотация: Мясная промышленность входит в число социально значимых отраслей АПК. Необходимость развития мясной отрасли АПК объясняется ростом потребительского спроса на мясо и мясные продукты, средней степенью инвестиционной активности и сравнительно высокими показателями зависимости от импорта. Специфика развития пищевой и перерабатывающей промышленности и, в частности, мясной отрасли, а также развитие современных фундаментальных и прикладных исследований в области продовольственного сырья и продуктов питания тесно и органически связаны с необходимостью обеспечить высококачественным и безопасным продовольствием население страны при данном уровне развития аграрного сектора нуждающегося в постоянной поддержке государства, и повышении платежеспособного спроса, с целью обеспечения продовольственной безопасности Казахстана. Предмет исследования. Проведен анализ показателей по объемам переработки скота, производства мяса и мясных продуктов с 2017 г. по ноябрь 2020 г. и определены основные направления развития отрасли на перспективу до 2025 г. Цель и задачи исследования. Изучение тенденций развития мясной отрасли АПК, с учетом общих направлений «науки о мясе» и смежных отраслей пищевой и перерабатывающей промышленности АПК. Обоснована необходимость в увеличении производственных мощностей предприятий по убою, первичной переработке скота и производству мясных изделий за счет строительства современных высокотехнологичных специализированных и комбинированных предприятий (мясохладобоен, мясокомбинатов) и реконструкции действующих. Научная новизна работы состоит в обеспечении комплексной механизации и автоматизации процессов производства для увеличения производительности, и безопасности труда и соблюдения жестких ветеринарно-санитарных требований, отвечающих международным стандартам качества и безопасности (повышение производительности труда на 10% за счет комплексной механизации и автоматизации производственных процессов и сокращения доли тяжелого ручного труда).
Держатели документа:
ЗКУ
Доп.точки доступа:
Zhurynov , G.M.
Abdikerimova , G.I.
Turlybekova , А.А.
Sarkulova , N.K.
Abdrakhmanova , M.B.
535.
Подробнее
24
A67
Appazov, N. O.
Rice straw and husk oil sludge for processing through the use of lignosulfonate as a binder with activarted charcoal. [Текст] / N. O. Appazov, B. M. Diyarova, B. M. Bazarbayev, T. Assylbekkyzy [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 65-71
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
activated carbon -- rice husk -- rice straw -- oil sludge -- lignosulfonate -- carbonization -- activation -- briquettes
Аннотация: This article examines the effect of lignosulfonate binding of rice waste to oil waste to obtain activated carbon. Lignosulfonate was added to the mixture to produce briquetted activated carbon by processing rice residue (husk and straw) and oil sludge together.
Держатели документа:
WKU
Доп.точки доступа:
Diyarova, B. M.
Bazarbayev, B. M.
Assylbekkyzy, T.
Kanzhar, S. A.
Dzhiembaev , B. Zh.
A67
Appazov, N. O.
Rice straw and husk oil sludge for processing through the use of lignosulfonate as a binder with activarted charcoal. [Текст] / N. O. Appazov, B. M. Diyarova, B. M. Bazarbayev, T. Assylbekkyzy [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 65-71
Рубрики: chemistry
Кл.слова (ненормированные):
activated carbon -- rice husk -- rice straw -- oil sludge -- lignosulfonate -- carbonization -- activation -- briquettes
Аннотация: This article examines the effect of lignosulfonate binding of rice waste to oil waste to obtain activated carbon. Lignosulfonate was added to the mixture to produce briquetted activated carbon by processing rice residue (husk and straw) and oil sludge together.
Держатели документа:
WKU
Доп.точки доступа:
Diyarova, B. M.
Bazarbayev, B. M.
Assylbekkyzy, T.
Kanzhar, S. A.
Dzhiembaev , B. Zh.
536.
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.
537.
Подробнее
35
Z63
Zhantassov, K.
Development of technology for extraction of lead and zinc oxides from dust and slags during the utilization of lead plant waste. [Текст] / K. Zhantassov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 81-85
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
waste -- lead waste -- oxic compounds -- lead and zinc compounds -- environmental pollution -- toxic waste processing -- waste disposal
Аннотация: The article proposes methods for the extraction of lead and zinc from slag waste and selects the optimal method for the selective extraction of zinc and lead oxides from dust and slags of lead production. The proposed technology of continuous carbon-free selective extraction of zinc and lead from the dust of electric steelmaking production allows the use of lead production slag, which is fed into a rotating drum furnace in two oppositely directed streams. During the movement of lead slag in the furnace drum and the burning of the torch, lead and zinc are more completely extracted from the dust-like material, where the transporting object is compressed air, and the purified flue gas after the gas is further purified by means of a smoke pump is released into the atmosphere.
Держатели документа:
WKU
Доп.точки доступа:
Bagova, Z.
Turebekova, G.
Sapargaliyeva, B.
Pusurmanova, G.
Z63
Zhantassov, K.
Development of technology for extraction of lead and zinc oxides from dust and slags during the utilization of lead plant waste. [Текст] / K. Zhantassov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 81-85
Рубрики: chemical Technology
Кл.слова (ненормированные):
waste -- lead waste -- oxic compounds -- lead and zinc compounds -- environmental pollution -- toxic waste processing -- waste disposal
Аннотация: The article proposes methods for the extraction of lead and zinc from slag waste and selects the optimal method for the selective extraction of zinc and lead oxides from dust and slags of lead production. The proposed technology of continuous carbon-free selective extraction of zinc and lead from the dust of electric steelmaking production allows the use of lead production slag, which is fed into a rotating drum furnace in two oppositely directed streams. During the movement of lead slag in the furnace drum and the burning of the torch, lead and zinc are more completely extracted from the dust-like material, where the transporting object is compressed air, and the purified flue gas after the gas is further purified by means of a smoke pump is released into the atmosphere.
Держатели документа:
WKU
Доп.точки доступа:
Bagova, Z.
Turebekova, G.
Sapargaliyeva, B.
Pusurmanova, G.
538.
Подробнее
38.3
S70
Sokolova, Ya. А.
The study of the properties and structure of cement binding composition on electrolyte acqueous solutions activated by mechanomagnetic method. [Текст] / Ya. А. Sokolova, M. V. Akulova, B. R. Isakulov, А. G. Sokolova [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 86-91
ББК 38.3
Рубрики: Строительные материалы
Кл.слова (ненормированные):
Cement compositions, -- mechanomagnetic activation -- electrolyte aqueous solutions -- differential thermo gravimetric analysis -- compressive strength -- structure formation of binders -- sodium thiosulphate -- calcium chloride
Аннотация: In the present paper, the issues of studying the influence of complex activation of grouting fluid on the structure and properties of the hardened cement paste and concrete are considered. The problem is relevant for manufacturing of building materials. In the paper, there was used the method of applying in the concrete mix composition of the elementary chemical substances undergone special physical treatment by means of mechanomagnetic activation. For more profound study of the structure formation processes in the hardened cement paste, the method of differential thermo gravimetric analysis has been used. As the research results have shown, the concrete samples on the activated electrolyte solutions are characterized by improved strength. In addition, on the base of differential thermo gravimetric analysis, it was proven that in the studied samples of the hardened cement paste on the electrolyte solutions activated by the method of mechanomagnetic treatment, the less calcium hydroxide and the more hydrated calcium silicate with amorphous and fine crystalline is formed. The obtained results for cement composites could be applied when manufacturing effective binder for concretes and mortars in the production of building materials and structures.
Держатели документа:
WKU
Доп.точки доступа:
Akulova, M.V.
Isakulov, B.R.
Sokolova, А.G.
Kul’sharov, B.B.
Isakulov, А.B.
S70
Sokolova, Ya. А.
The study of the properties and structure of cement binding composition on electrolyte acqueous solutions activated by mechanomagnetic method. [Текст] / Ya. А. Sokolova, M. V. Akulova, B. R. Isakulov, А. G. Sokolova [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 86-91
Рубрики: Строительные материалы
Кл.слова (ненормированные):
Cement compositions, -- mechanomagnetic activation -- electrolyte aqueous solutions -- differential thermo gravimetric analysis -- compressive strength -- structure formation of binders -- sodium thiosulphate -- calcium chloride
Аннотация: In the present paper, the issues of studying the influence of complex activation of grouting fluid on the structure and properties of the hardened cement paste and concrete are considered. The problem is relevant for manufacturing of building materials. In the paper, there was used the method of applying in the concrete mix composition of the elementary chemical substances undergone special physical treatment by means of mechanomagnetic activation. For more profound study of the structure formation processes in the hardened cement paste, the method of differential thermo gravimetric analysis has been used. As the research results have shown, the concrete samples on the activated electrolyte solutions are characterized by improved strength. In addition, on the base of differential thermo gravimetric analysis, it was proven that in the studied samples of the hardened cement paste on the electrolyte solutions activated by the method of mechanomagnetic treatment, the less calcium hydroxide and the more hydrated calcium silicate with amorphous and fine crystalline is formed. The obtained results for cement composites could be applied when manufacturing effective binder for concretes and mortars in the production of building materials and structures.
Держатели документа:
WKU
Доп.точки доступа:
Akulova, M.V.
Isakulov, B.R.
Sokolova, А.G.
Kul’sharov, B.B.
Isakulov, А.B.
539.
Подробнее
26.3
S14
Safarov, R. Z.
Elemental analysis of local and foreign raw materials for the production of trimanganese tetraoxide pigment. [Текст] / R. Z. Safarov, A. Zhandildenova, D. B. Kargin, B. B. Makhmutov [и др.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 92-98
ББК 26.3
Рубрики: geology
Кл.слова (ненормированные):
hausmannite -- pigment -- manganese ore -- nanopowders -- electronic microscopy -- energy-dispersive analysis
Аннотация: In the course of continuation of scientific research in the development of Kazakhstani technology for the production of trimanganese tetraoxide pigment, there have been proposed new methods of analysis which make it possible to investigate new nanostructural materials sourced from local deposits. The results obtained are of practical importance and serve as the foundation for developing new technologically advanced domestic production of a competitive product that is in demand both on the national and international markets. The available methods are not able to highlight the particularity and diversity of Kazakhstani manganese ores due to the uneven distribution of manganese minerals and host (waste) rock, the quantitative ratio of rock-forming components and their variation instability. Methods of energy-dispersive analysis of manganese ores from Kazakhstani Zhaksylyk and Bogach deposits have been put forward, electronic micrographs, spectrograms of samples, diagrams of normalized distribution of elements on the surface of samples have been obtained and a comparative analysis with raw analogue samples of some foreign manufacturers has been performed.
Держатели документа:
WKU
Доп.точки доступа:
Zhandildenova, A.
Kargin, D. B.
Makhmutov, B. B.
Kamatov, R. M.
Shomanova, Zh. K.
S14
Safarov, R. Z.
Elemental analysis of local and foreign raw materials for the production of trimanganese tetraoxide pigment. [Текст] / R. Z. Safarov, A. Zhandildenova, D. B. Kargin, B. B. Makhmutov [и др.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 92-98
Рубрики: geology
Кл.слова (ненормированные):
hausmannite -- pigment -- manganese ore -- nanopowders -- electronic microscopy -- energy-dispersive analysis
Аннотация: In the course of continuation of scientific research in the development of Kazakhstani technology for the production of trimanganese tetraoxide pigment, there have been proposed new methods of analysis which make it possible to investigate new nanostructural materials sourced from local deposits. The results obtained are of practical importance and serve as the foundation for developing new technologically advanced domestic production of a competitive product that is in demand both on the national and international markets. The available methods are not able to highlight the particularity and diversity of Kazakhstani manganese ores due to the uneven distribution of manganese minerals and host (waste) rock, the quantitative ratio of rock-forming components and their variation instability. Methods of energy-dispersive analysis of manganese ores from Kazakhstani Zhaksylyk and Bogach deposits have been put forward, electronic micrographs, spectrograms of samples, diagrams of normalized distribution of elements on the surface of samples have been obtained and a comparative analysis with raw analogue samples of some foreign manufacturers has been performed.
Держатели документа:
WKU
Доп.точки доступа:
Zhandildenova, A.
Kargin, D. B.
Makhmutov, B. B.
Kamatov, R. M.
Shomanova, Zh. K.
540.
Подробнее
33
R24
Rasulov, S. R.
Hydrodynamic features of suspensions and emulsions flows. [Текст] / S. R. Rasulov, G. R. Mustafayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 99-104
ББК 33
Рубрики: Горное дело
Кл.слова (ненормированные):
hydrodynamics -- differential equation -- suspensions -- emulsions -- dispersed phase -- solid spherical particle -- turbulent flow -- pulsating motion
Аннотация: This scientific article is devoted to the problems associated with the flow of suspensions and emulsions and some simplifications of the real picture of the flow of a polydisperse medium are made. It is also stipulated that differential equations characterizing the motion of suspensions and emulsions should take into account the fundamental discontinuity of the medium and the physicochemical processes of heat and mass transfer occurring in it. Taking into account all these factors, a general equation for multiphase systems is proposed with certain simplifications that do not change.
Держатели документа:
WKU
Доп.точки доступа:
Mustafayeva, G.R.
R24
Rasulov, S. R.
Hydrodynamic features of suspensions and emulsions flows. [Текст] / S. R. Rasulov, G. R. Mustafayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 99-104
Рубрики: Горное дело
Кл.слова (ненормированные):
hydrodynamics -- differential equation -- suspensions -- emulsions -- dispersed phase -- solid spherical particle -- turbulent flow -- pulsating motion
Аннотация: This scientific article is devoted to the problems associated with the flow of suspensions and emulsions and some simplifications of the real picture of the flow of a polydisperse medium are made. It is also stipulated that differential equations characterizing the motion of suspensions and emulsions should take into account the fundamental discontinuity of the medium and the physicochemical processes of heat and mass transfer occurring in it. Taking into account all these factors, a general equation for multiphase systems is proposed with certain simplifications that do not change.
Держатели документа:
WKU
Доп.точки доступа:
Mustafayeva, G.R.
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