Претрага

Упит dcterms_subject_txt:mining industry

291 items

  • Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara

    Filip Miletić, Dragan Milčić, Miloš Tanasijević, Miloš Milovančević (2021)
    U radu je izvršena uporedna analiza pouzdanosti transportnih sistema dozera koji rade na površinskim kopovima Rudarskog basena Kolubara. Period za koji je vršena analiza je prvih deset godina eksploatacije. Efikasnost tehnološkog procesa na otkopavanju korisne mineralne sirovine i otkrivke u velikoj meri zavisi od rada dozera. Iskorišćene su matematičke metode za aproksimaciju i identifikaciju zabeleženih vremena u radu, kako bi se dobili analitički pokazatelji pouzdanosti. Na ovaj način se bitno podiže kvalitet upravljanja procesom eksploatacije i održavanja mašina na ...
    dozeri, pouzdanost, kolubarski ugljeni basen
    ... Abstract: The paper presents a comparative reliability analysis of the dozers transport systems which working on the open pit mines of the Kolubara Mining Basin. Analysis period is first ten years of exploitation. Efficiency of process on excavation of mineral raw material and overburden largely depends ...
    ... . In this way, the quality management of the exploatation and maintenance process is significantly raised. Keywords: dozers, reliability, kolubara mining basin 1. Uvod Rudarska industrija predstavlja važnu privrednu granu. Poslednjih godina proizvodnja svih metaličnih, nemetaličnih i energetskih mineralnih ...

  • Development of Integrated Fuzzy Model for Mine Management Optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    Technoeconomic, environmental and safety criteria generally affect the management of metallic and non-metallic mining operations. The first basic question that needs to be addressed when planning ore mining is which methods are adequate and what is the optimal mining technology? Due to the complex geologic framework of ore deposits, geological exploration has rendered synonymous the inherent uncertainties, vagueness, and inaccuracies. As a result, subjective evaluation by engineers and expert experience have become increasingly important. Given that the natural language ...
    mining technology, expert evaluation, triangular fuzzy numbers, multicriteria decision making

  • A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers

    Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić (2019)
    Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...
    Efikasnost, Fazi zaključivanje, Prikupljanje podataka, Buldozer

  • Модел померања терена услед утицаја рударских радова на основу радарских сателитских снимака

    Зоран Гојковић (2023)
    Површински коп, као систем који обезбеђује енергетску стабилност или снабдевање сировинама које су од изузетне важности за привредни напредак, својим функционисањем утиче на околна насељена места. Међу бројним аспектима овог утицаја, може се издвојити издвојити и анализирати утицај вертикалних и хоризонталних померања која се јављају на површи терена. Мониторинг вертикалних и хоризонталних померања површи терена околних насељених места треба да има што бољу временску резолуцију (временски период између праћења деформација) како би се вертикална и хоризонтална померања контролисала и ...
    Сентинел 1 интерферометрија, слегање, Перманентни скатерери, Костолац

  • Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin

    Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek (2018)
    нафтна геологија, геотермална енергија, Панонски басен

  • The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector

    Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković (2020)
    Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...
    energetska bezbednost, prirodni gas, fazi AHP, AHP višekriterijumska analiza, fazi teorija
    ... network 242 5 Number of delivery points 276,581 ** Households 262,814 District heating companies 133 Industry and other 13,634 Network characteristics Length, km 18,422 Operating pressure for industry (medium pressure) 4–16 bar Length of distribution network at medium pressure ~1470 km Operating pressure ...
    ... Plant 602.335 641.740 683.183 767.325 Industry 938.095 1129.669 1855,226 2203.408 Total 1810 2076.581 2880 3350 Heat power 33.338 33.338 33.338 33.338 MJ/m3 Households 8986925 10173824 11387961 12644003 GJHeat Plant 20080644 21394328 22775955 25581081 Industry 31274211 37660905 61849524 73457215 ...
    ... developments plans for the natural gas sector in the Republic of Serbia. 3.1. Current State Natural gas has been produced in Serbia since 1951. The Oil industry company of Serbia—NIS was owned by the state and obligated for gas production. In 1991, NIS becomes a vertically integrated Energy Company. Its role ...

  • Ontološki model upravljanja rizikom u rudarstvu

    Olivera Kitanović (2021)
    Rudarska proizvodnja obuhvata kompleksne tehnološke sisteme, što nameće potrebu za uspostavljanjem i unapređivanjem sistema upravljanja rizikom. Heterogenost i obim podataka neophodnih za upravljanje rizikom zahtevaju sistem koji ih na fleksibilan način integriše i omogućava njihovo optimalno korišćenje. Osnovni cilj ove disertacije je razvoj ontologije za domen rudarstva i na njoj zasnovanog modela za upravljanje rizikom. Njegova realizacija podrazumeva i implementaciju algoritama ekstrakcije informacija za popunjavanje ontologije, kao i odgovarajuće softversko rešenje. Razvoj modela obuhvata i značajno proširenje rudarskog korpusa, kao ...
    rudarstvo, rizik, upravljanje rizikom, procena rizika, ontologija, semantička mreža, ekstrakcija informacija, upravljanje znanjem, računarska lingvistika
    ... u sistematizovanju rudarske terminologije, počevši od 1918. godine kada je objavljen „Glossary of the Mining and Minerals Industry“, pa sve do 1968. godine kada je objavljen „A Dictionary of Mining, Minerals, and Related Terms“. U ovom pedesetogodišnjem projektu, više od 100 stručnjaka (inženjera, naučnika ...
    ... 2010. “Hunting for the Black Swan: Risk Mining from Text.” In Proceedings of the ACL 2010 System Demonstrations, 54–59. 131 Lilić, Nikola, Srećko Ćurčić, and Milan Radosavljević. 2009. “Risk Assessment and Managing Technical Systems in Case of Mining Industry.” Strojniški Vestnik-Journal of Mechanical ...
    ... Stanković, Ranka, Ivan Obradović, Olivera Kitanović, and Ljiljana Kolonja. 2012. “Towards a Mining Equipment Ontology.” In Proceedings of the 12th International Conference ‘Research and Development in Mechanical Industry’ (RaDMI 2012), 108–18. Vrnjačka Banja, Serbia: SaTCIP (Scientific and Technical Center ...

  • Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP

    Boban Pavlović, Nikola Trtica (2024)
    This paper presents an approach to assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia’s electricity sector, which relies heavily on lignite-based pro duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may lead to slower GDP growth compared to official forecasts. However, ...
    ETS, BDP - rashodni pristup, cene električne energije
    ... of implementing an ETS and other carbon pricing pol- icies under different conditions, scenarios, and policy frameworks. These studies examine industry competitiveness (Joltreau and Som- merfeld, 2019), employment effects (Chen and Wang, 2023), ETS price dynamics (Li et al.., 2019), trade patterns ...
    ... in- vestments, emissions reduction (European Commission, 2021), and other benefits for the decarbonization of the economy while preserving industry competitiveness. However, how to balance the environmental benefits of carbon pricing with its economic costs is a topic without consensus among ...
    ... work, volunteer work, and environmental degradation. Also, the effects in other sectors of the economy, such as services and activities within industry (GDP by production approach), have not been fully quantified. It should be emphasized that those trends could affect the productivity and com ...

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља

    Бојан Земљак (2024)
    Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...
    Елементи ретких земаља, резерве, употреба, представници и методе опоравка елемената ретких земаља
    ... H., Hustrulid, W. and Bullock, R., 2001. Underground mining methods and applications. Underground mining methods: Engineering fundamentals and international case studies, p.3-14. [77] Jones, G., 2009. Mineral sands: An overview of the industry. Unpublished. Capel: Jluka Resources Limited. [78] ...
    ... earth element industry: Challenges and opportunities. Infermafional Journal of Mining, Reclamation and Environment, 36(9), p.651-670. [105] Chen, G.Q., Talebi, S., Gras, S.L., Weeks, M. and Kentish, S.E., 2018. A review of salty waste strcam management in the Australian dairy industry. Journa! of ...
    ... elements consumption in Australia. Current Research in Environmental Sustainability, 4, p.100157. [117] Eklund, E., 2015. Mining in Australia: An historical survey of industry-community relationships. 7he Extractive Industries and Society, 2(1), p.177-188. [118] Vestergaard, C., 2015. Governing ...

  • Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova

    Zoran M. Štirbanović (2015-07-01)
    Rudarstvo, a u okviru njega i priprema mineralnih sirovina, se odlikuje složenošću tehnoloških procesa što je posledica velikog broja uticajnih parametara. Samim tim je potrebno biti veoma obazriv prilikom donošenja odluka u oblasti rudarstva. U cilju što efikasnijeg funkcionisanja procesa, moguće je primeniti različite metode koje služe za pojednostavljenje procesa odlučivanja. Jedna od takvih metoda jeste i teorija grubih skupova. Ona predstavlja relativno novu matematičku teoriju koja je pogodna za razumevanje nepreciznih i nepotpunih podataka kao i za otkrivanje ...
    rudarstvo, priprema mineralnih sirovina, teorija grubih skupova, višekriterijumsko odlučivanje, flotacijsko jalovište, flotacijski kolektor, flotaciona mašina
    ... in various areas of industry, however, by reviewing literature it was concluded that the applicability of this theory in mining has not been sufficiently investigated. This was the starting point of a doctoral dissertation, examining the possibilities of its application in mining. In the experimental ...
    ... sites and tailings impoundments, Asian mining, Institution of Mining and Metalurgy, London, 1981, www.robertsongeoconsultants.com. 86. A. MacG Robertson, S. C. Shaw, A multiple accounts analysis for tailings site selection, Sudbury 99 Conf. Proceedings Mining and the Environment II, Vol. 3, 1999 ...
    ... 6123–6128. 21. J.-W. Liu, C.-H. Cheng, Y.-H. Chen, T.-L. Chen, OWA rough set model for forecasting the revenues growth rate of the electronic industry, Expert Systems with Applications 37, 2010, pp. 610–617. 22. B. S. Ahna, S. S. Chob, C. Y. Kimc, The integrated methodology of rough set theory ...

  • Navigacija budućnosti: poslovni rizici i prilike u rudarskoj industriji

    Petar Marković, Dejan Stevanović, Mirjana Banković, Vuk Lazić (2024)
    Sektor rudarstva i metalurgije se globalno suočava sa brzo evoluirajućim okruženjem u 2024. godini, koje karakteriše jedinstvena međusobna zavisnost rizika i prilika. Sektor je u središtu globalne energetske tranzicije, uz rastuću potražnju za kritičnim mineralnim sirovinama poput litijuma, nikla i bakra, koji su od suštinskog značaja za tehnologije obnovljive energije i električna vozila. Međutim, ova sve veća odgovornost donosi brojne izazove, uključujući pojačanu pažnju na ekološke, društvene i upravljačke (ESG) faktore, fizičke i tranzicione rizike uzrokovane klimatskim promenama, i ...

  • Energetska bezbednost sektora prirodnog gasa Srbije

    Aleksandar Madžarević, Predrag Jovančić, Miroslav Crnogorac (2023)
    U prve dve decenije 21. veka obezbeđivanje sigurnosti snabdevanja prirodnim gasom domaćeg tržišta bio je jedan od prioriteta razvoja energetike Srbije. Istovremeno, aspekt sigurnog snabdevanja bio je neizostavni deo slagalice stvaranja energetske bezbednosti. Izražena uvozna zavisnost je dominantna karakteristika sektora prirodnog gasa, tačnije, Republika Srbija je snažno zavisna od ruskog gasa, sa više od 80% uvezenih količina gasa, a do pre dve godine snabdevala se isključivo kroz jednu interkonekciju. U radu se razmatra aktuelna situacija u sektoru prirodnog ...
    N-1, IDUPS, energetska bezbednost, sigurnost snabdevanja
    ... assistant professor at the Faculty of Mining and Geology, University of Belgrade. He graduated, completed his master's studies, and received his doctorate in the scientific field of oil mining, mechanization, and automation in mining, at the Faculty of Mining and Geology, University of Belgrade ...
    ... doctoral studies at the Faculty of Mining and Geology, UB, in the study program Mining Engineering. He works as an assistant professor at FMG, UB. Aleksandar is married and the father of three children. Predrag Jovančić is a full professor at the Faculty of Mining and Geology, University of Belgrade ...
    ... radova u međunarodno priznatim časopisima, učestvovao u izradi različitih studijai međunarodnih projekata. 36 International Congress on Process Industry Abstract Submission Form Note: Please, do fill the template in English. ABSTRACT Author/s Aleksandar Madžarević Predrag Jovančić Miroslav ...

  • Model upravljanja investicionim projektima otvaranja površinskih kopova uglja

    Cvjetko P. Stojanović (2015-04-27)
    Brze promene u okruženju pred rukovodioce postavljaju mnogobrojne zahteve,pre svega, one koji se tiču ostvarenja ciljeva u zadatom vremenu i raspoloživimsredstvima što zahteva fleksibilan pristup u organizovanju aktivnosti i efikasnost unjihovom sprovođenju.Upravljanje projektima, bilo koje vrste, suštinski, predstavlja veoma složenproces odlučivanja uslovljen velikim brojem ulaznih faktora. Ti faktori treba daomoguće fokusiranje na prioritete i ciljeve, praćenje realizacije, fleksibilnost uprevazilaženju teškoća, prilagođavanje promenama, te kontrolu nad ostvarenimrezultatima. Ovakav način upravljanja zahteva korišćenje proverenih tehnika i alata tetimski rad angažovanih na ...
    Projekat, upravljanje, metodologija, površinska eksploatacija, model

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods

  • Развој хибридног модела за оптиматизацију завршне контуре одлагалишта у површинској експлоатацији лежишта минералних сировина

    Aлександар Додеровић (2024)
    Површинска експлоатација минералних сировина захтијева претходно откопавање значајних( милионских) количина јаловине, које је неопходно транспортовати до локације на којој ће сеона трајно одложити. Традиционални приступ избора локације и дизајна одлагалишта се карактерише парцијалним приступом, заснованом на анализи неколико водећих критеријума као и на личном искуству инжењера, често занемарујући синергетски ефекат осталих утицајних фактора Технолошке операције које се односе на манипулацију јаловином, међу којима предњачи транспорт, генеришу највећи дио трошкова у површинској експлоатацији. Такође, цјелокупан процес експлоатације додатно је ограничен ...
    оптимизације завршне контуре одлагалишта, хибридни модел, површинска експлоатација, генетски алгоритам

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... com/, accessed June, 10th 2016 [9]. eLearning Industry, 10 Easy Steps For Successful eLearning Course Translation https://elearningindustry.com/10-easy-steps-for- successful-elearning-course-translation, accessed June, 10th 2016 [10] eLearning Industry, eLearning Course Translation Workflow http ...
    ... OBRADOVIĆ University of Belgrade, Faculty of Mining and Geology, ivan.obradovic@rgf.bg.ac.rs DALIBOR VORKAPIĆ University of Belgrade, Faculty of Mining and Geology, dalibor.vorkapic@rgf.bg.ac.rs RANKA STANKOVIĆ University of Belgrade, Faculty of Mining and Geology, ranka.stankovic@rgf.bg.ac.rs ...
    ... rs NIKOLA VULOVIĆ University of Belgrade, Faculty of Mining and Geology, nikola.vulovic@rgf.bg.ac.rs MILADIN KOTORČEVIĆ University of Belgrade, Faculty of Mining and Geology, miladin.kotorcevic@rgf.bg.ac.rs Abstract: E-learning courses are becoming progressively popular. Thanks to the Internet ...

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... drying plant. A pilot plant was installed in the heat-exchange station at the Gejzir Hotel of Sijarinska Banja. The heat power avail- able to the industry was 2.5 MW from thermal water pumped at the rate of only 15 l/s. At the maximum rate of 30 l/s, the available heat power would be 5 MW. Milojevi} ...
    ... a drying plant. A pilot plant was installed in the heat-exchange station at the Gejzir Hotel of Syarinska Banja. The heat power avail- able to the industry was 2.5 MW from thermal water pumped at the rate of only 15 I/s. At the maximum rate of 30 I/s, the available heat power would be 5 MW. Milojevi¢ ...
    ... у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr ...

  • Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US

    Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić (2023)
    Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...
    CO2, емисија, угаљ, термоелектрана, САД, ЕУ-27
    ... and US Uroš Djorgovski!, Aleksandar Madžarević”, Predrag Jovančić? !Joint stock company Electric Power Industry of Serbia — Branch TPPs-OCMs Kostolac ŽUniversity of Belgrade – Faculty of Mining and Geology, Belgrade, Serbia Summary: Even in the third decade of the 21st century, large power plants ...
    ... so prices in Europe (S121/tons) and Asia (8145/ton) reached their peak since 2008 [16]. Demand for coal is primarily dictated by the needs of industry and the power generation sector in China and India, which accounted for over 70% of coal demand growth in 2021. Notably, both EU-27 counties and ...
    ... у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr ...

  • Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking

    Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović (2024)
    Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...
    non-detonating, chemical mixture, rock breaking, borehole pressure