Претрага
450 items
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Processing and interpretation of geomagnetic anomalies at north taminhint area in wadi ash-shatti region
Munir Abusbia (1984)Munir Abusbia. Processing and interpretation of geomagnetic anomalies at north taminhint area in wadi ash-shatti region, Beograd:Rudarsko-geološki fakultet, 1984
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Improving efficiency of thermal power plants through mine coal quality planning and control
Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja. "Improving efficiency of thermal power plants through mine coal quality planning and control" in Thermal Science, Vinča Institute of Nuclear Sciences (2018). https://doi.org/10.2298/TSCI170605209B
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Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world
Bogoljub Vučković, Bojan Dimitrijević (2023)The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...... compared to other locations on the diagram. 182 3b. SOIL OF THE URBAN AND RECREATIONAL ZONES – SELECTED CITIES OF REGION Zn, ppm - Region Cities Top Soil VS. Kostolac Coal Cu, ppm - Region Cities Top Soil VS. Kostolac Coal year, early 2023. year, early 2023. i i = TOPFIVE: ATBOTTOM: = ;: d Aggetelek ...
... characteristics of coal seams and perform a comparative analysis of coal af}ectation on the environment. P/ith 155 analyzes of HM from coal, 45 from ash, 165 from gravel and 30 from soil, we perform analysis of horizontal and vertical distribution of HM and comparative analysis. B/hat interests us as ...
... II and II coal layers; as well as from the ashes after burning the same samples. A total of 155 samples were taken from coal and 45 from 179 ash. A total of 22 chemical elements were analyzed. Here is an overview of three. It can be concluded that there is a certain lateral zonation of the d ...Bogoljub Vučković, Bojan Dimitrijević. "Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world" in 9th International Conference Mining and Environmental Protection, 24–27. May 2023, Sokobanja, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
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Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)
Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick. "Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2024). https://doi.org/10.31577/GeolCarp.2023.26
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Properties of fly ash and slag from the power plants
This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method... of ash and slag samples, are shown. For each power plant, six samples of fly ash in May were selected and one sample of slag. In June, three samples of fly ash were selected, with a total of 36 samples of fly ash and four slag samples (Table 1). The chemcial composition results of the fly ash and ...
... is based on an examination of the chemical composition of the ash (THOMAS, 2007; KIM et al., 2005), the mineral ash composi- tion (ŽIVOTIĆ et al., 2015), the mineral ash and coal composition (WARD & FRENCH, 2005) and chemical-mineral ash composi- tion (VASSILEV et al., 2013; VASSILEV et al., 2014; ...
... 43 0.23 0.40 0.49 0.74 LOI 1000 – loss on ignition 1000°C; m – �y ash for month May; j – �y ash for month June; (s) – slag; NT – Nikola Tesla; KO – Kostolac Figure 5. The R module according to PP (m – �y ash for month May; j – �y ash for month June; (s) – slag; NT – Nikola Tesla; KO – Kostolac). ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Properties of fly ash and slag from the power plants" in Geologia Croatica, Zagreb : Croatian Geological Survey (2016). https://doi.org/10.4154/gc.2016.26
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... activation of fly ash by components present, their mutual reaction and the possible emergence samples of fly ash from the PPNT A with small share of additives (hydrated lime and cement) in a humid environment. 2.2 Chemical composition of fly ash Chemical composition of the fly ash from PPNT A ...
... fly ash Results of chemical analysis of fly ash samples taken in Series 1 (S1) and Series 2 (S2) from PPNT A, are shown in Tab. 7. Table 7 Results of chemical analyses of fly ash taken in S1 and S2 at location of PPNT A Chemical composition S1 S2 Mean values 1983 ÷ 2004 Ash composition ...
... 1839-1848 3.1.1 Classification of fly ash according to chemical composition According to international system of fly ash classification, the fly ash from PPNT A belongs to group I, that is, aluminosilicate ashes. Classification of the module R size, fly ash from PPNT A belongs to silicate-aluminum ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035
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Distribution of major and trace elements in the Kovin lignite (Serbia)
Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...... content, %; Adb – ash content, dry basis, %; Sdb – total sulphur content, dry basis wt.%; Vdb – volatile mat- ter, dry basis wt.%; Q daf g – gross calorific value, dry, ash-free basis, MJ/kg; Q daf n – net calorific value, dry, ash-free basis, MJ/kg; Cdaf – carbon content, dry, ash-free basis, %; Hdaf ...
... content, %; Adb – ash content, dry basis, %; Sdb – total sulphur content, dry basis wt.%; Vdb – volatile matter, dry basis wt.%; Q daf g – gross calorific value, dry, ash-free basis, MJ/kg; Q daf n – net calorific value, dry, ash-free basis, MJ/kg; Cdaf – carbon content, dry, ash-free basis, %; ...
... Hdaf – hidrogen content, dry, ash-free basis, %; Ndaf – nitrogen content, dry, ash-free basis; Odaf – oxigen content, dry, ash-free basis, %; X̅ – arithmetic mean value; Min – minimum; Max – maximum; s – standard deviation. Note: Values of parameters for individual samples are given in Table S-II ...Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović. "Distribution of major and trace elements in the Kovin lignite (Serbia)" in Geologia Croatica, Croatian Geological Survey (2019). https://doi.org/10.4154/gc.2019.06
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P-T analiza uglja RB Kolubara
Rada Vitomir (2024)Rudarski basen Kolubara predstavlja jedno od najvažnijih ležišta lignita u Republici Srbiji i ključni je faktor u snabdevanju zemlje energijom. Kvalitet uglja iz ovog basena direktno utiče na efikasnost termoelektrana i zadovoljenje energetskih potreba. U ovom radu, opisan je značaj tehničke i elementarne analiza uglja kako bi se utvrdili fizičko-hemijski parametri uglja iz Rudarskog basena Kolubara. U drugom delu rada dat je opis P-T analize uglja i njen značaj za ocenu mogućnosti čišćenja uglja. Takođe, dati su i rezultati ...... 67(5), 729-738. 10.Kleinhans, U., Wieland, C., Frandsen, F. J., & Spliethoff, H. (2018). Ash formation and deposition in coal and biomass fired combustion systems: Progress and 69 challenges in the field of ash particle sticking and rebound behavior. Progress in energy and combustion science, 68 ...
... 241-251. 70 20. Yuan, Z. S., Wang, J., Kong, L., Bai, J., Ni, Z., Li, H., ... & Li, W. (2021). Comparison study of fusibility between coal ash and synthetic ash. Fuel Processing Technology, 211, 106593. 21.Životić, M. M., Stojiljković, D. D., Jovović, A. M., & Čudić, V. V. (2012). Mopgućnost korišćenja ...
... prvom redu ı ukazuju na moguće pravce rešenja uočenih problema. 68 LITERATURA . Ahmaruzzaman, M. (2010). A review on the utilization of fly ash. Progress in energy and combustion science, 36(3), 327-363. . Bogdanović, V., Ilić, Z., & Polomčić, D. (2007). Izbor ograničenja i otvaranja p ...Rada Vitomir. P-T analiza uglja RB Kolubara, 2024
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New Technology for Prevention of Eolian Erosion of Ash on the Ash Disposals in Power Plant Nikola Tesla in Serbia
Ristović Ivica, Borisavljević Ana (2010)Ristović Ivica, Borisavljević Ana. "New Technology for Prevention of Eolian Erosion of Ash on the Ash Disposals in Power Plant Nikola Tesla in Serbia" in Global Change-Challenges for Soil Management no. 41, :CATENA VERLAG GMBH (2010): 278-285
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Preliminary Examination of the System Fly Ash–Bottom Ash–Flue Gas Desulphurization Gypsum–Portland Cement–Water for Road Construction
Tokalić Rade, Marinković Slobodanka, Trifunović Prvoslav, Dević Gordana, Zildzović Snežana. "Preliminary Examination of the System Fly Ash–Bottom Ash–Flue Gas Desulphurization Gypsum–Portland Cement–Water for Road Construction" in Journal of Chemistry, :Hindawi Publishing Corporation (2013). https://doi.org/doi:10.1155/2013/421480
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Examination of the possibilities of the application of waste materials (gypsum, fly ash and bottom ash) in construction
Trifunović Prvoslav, Marinković Slobodanka, Kostić-Pulek Aleksandra, Tokalić Rade, Popov Svetlana (2014)Trifunović Prvoslav, Marinković Slobodanka, Kostić-Pulek Aleksandra, Tokalić Rade, Popov Svetlana. "Examination of the possibilities of the application of waste materials (gypsum, fly ash and bottom ash) in construction" in Podzemni radovi no. 24, Beograd:Rudarsko-geološki fakultet (2014): 49-60
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Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS... part ofthe ash. Consequently, Y is lower than Y„„x for AC2 in contrast to all other chars except PW700g, which seems to be most affected by the inhomogeneous distribution of ash components due to its high ash content. The higher values for Ya„h than Y„x are reasonable because some ash forming elements ...
... would be found for ash-rich HW500f resulting in an O/C ratio similar to SW500f. The largest relative standard deviations for the oxygen content were found for the biochars with the largest ash content HW500f (18.1%) and PW700g (19.4%). This might be an indica- tion that the ash components are i ...
... Gransmore Green, Essex, England) with automatic temperature compensation for 25 "C. Removal of acid soluble ash components. The chars were shaken for 24 h with 0.05 M HClin order to remove ash components [57]. Then they were washed twice with 1 M CaCl, and subsequently with deionized water (all at ...Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann. "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLOS ONE (2022). https://doi.org/10.1371/journal.pone.0277365
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Comparison of sequential and single extraction in order to estimate environmental impact of metals from fly ash
летећи пепео угља, екстракција са једним агенсом, секвенцијална екстракција, микроталасне пећнице, ултраталасиAleksandra Tasić, Ivana Sredović-Ignjatović, Ljubiša Ignjatović, Marija Ilić, Mališa Antić. "Comparison of sequential and single extraction in order to estimate environmental impact of metals from fly ash" in Journal of the Serbian Chemical Society (2016). https://doi.org/10.2298/JSC160307038T
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Komparacija metoda XRF i ICP-MS na uzorcima uglja i produkata sagorevanja
Ugljevi niskog ranga – ligniti u Republici Srbiji predstavljaju glavnu energetsku sirovinu koja se koristi za proizvodnju električne energije. Rudarstvo u Srbiji doprinosi bruto dodatoj vrednosti sa 1,8% (2020; https://publikacije.stat.gov.rs/). Sagorevanjem ugljeva niskog ranga u termoelektranama generišu se velike količine elektrofilterskog pepela i pepela, koje često predstavljaju jedan od izvora zagađenja životne sredine usled sadržaja toksičnih elemenata. Dalja upotreba produkata sagorevanja zavisi od njihovog sastava i sadržaja toksičnih mikroelemenata. Svakodnevno sagorevanje lignita u termoelektranama uslovljava konstantan monitoring potencijalno toksičnih ...Branko Kostić, Dejan Prelević, Sabina Kovač, Ksenija Eraković, Dragana Životić. "Komparacija metoda XRF i ICP-MS na uzorcima uglja i produkata sagorevanja" in 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022., Srpsko geološko društvo (2022)
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Компарација метода XRF i ICP-MS на узорцима угља и продуктима сагоревања
Бранко Костић, Ксенија Ераковић, Дејан Прелевић, Сабина Ковач, Драгана Животић. "Компарација метода XRF i ICP-MS на узорцима угља и продуктима сагоревања" in Записници Српског геолошког друштва (2023)
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Pelletization of fly ash and application areas
Tomanec Rudolf, Birčević D, Simović I, Čebašek Vladimir. "Pelletization of fly ash and application areas" in 15th Conference on Enviromental and Mineral Processing, Ostrava (2011): 261-275
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Some aspects of fly ash utilization in building materials industry
Kostović Milena, Dimitrijević Dragana (2013)Kostović Milena, Dimitrijević Dragana. "Some aspects of fly ash utilization in building materials industry" in XXI International Scientific and Professional Meeting Ecological Truth Eco-Ist13, Bor, Serbia:University of Belgrade, Technical Faculty, Bor (2013): 179-185
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Laboratory Investigation on Fly Ash Pelletization and application areas
Tomanec Rudolf, Lazić Predrag, Birčević D., Fečko P., Čablik V.. "Laboratory Investigation on Fly Ash Pelletization and application areas" in Proceedings of The XIV Balkan Mineral Processing Congress I, Tuzla: (2011): 389-395
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Characterization of Lignitic Fly Ash Pellets from TPP NT-B Obrenovac
Tomanec Rudolf, Lazić Predrag, Fečko P., Čablik V.. "Characterization of Lignitic Fly Ash Pellets from TPP NT-B Obrenovac" in Proceedings of The XIX International Scientific and Professional Meeting ECO-IST 2011 (Ecological Truth), Bor:University of Belgrade, Technical faculty Bor (2011): 175-182
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Thermal resistance of alkali activated binders synthesized using the fly ash and steel slag
Nikolić Irena, Marković Smilja, Karanović Ljiljana, Radmilović Vuk, Radmilović Velimir. "Thermal resistance of alkali activated binders synthesized using the fly ash and steel slag" in The Seventeenth Annual Conference, YUCOMAT 2015 O.S.B.1, Herceg Novi, Montenegro: (2015): 24-24