TY  - JOUR
AU  - Ristić, Marko
AU  - Radovanović, Ljiljana
AU  - Prokić-Cvetković, Radica
AU  - Otić, Goran
AU  - Perišić, Jasmina
AU  - Vasović, Ivana
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2617
AB  - Ventilation mill for grinding coal is one of the main steam power plants in the system that makes a significant effect on the level of energy efficiency with its work. The aim of this paper is to increase the energy efficiency of thermo power plant Kostolac B by reducing the problem of wear in ventilation mill for coal grinding. The idea of this research is to investigate the optimum hardfacing technologies to increase wear resistance of impact plates in ventilation mill. Before applying hardfacing on impact plates in the exploitation conditions, it is necessary to model test hardfaced samples for determination of the optimal technology and fillermaterial for revitalization. The relative weight loss of the impact plates after 1440 h period of exploitation in real conditions is very small, 5-8%. The application of this approach can reduce the number of possible repairs and extends the period between them, resulting in significant economic effects. Before and after revitalization of ventilationmill is conducted analyzing of failure during the working period. In this paper, we present time of repair of ventilation mills number 22, 23, 24 and 25, the number of repairs before and after revitalization and cost of repairs.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Energy Sources Part B-Economics Planning and Policy
T1  - Increase energy efficiency of thermal power plant Kostolac B by revitalization ventilation mills
EP  - 197
IS  - 2
SP  - 191
VL  - 12
DO  - 10.1080/15567249.2015.1014977
ER  - 

@article{
author = "Ristić, Marko and Radovanović, Ljiljana and Prokić-Cvetković, Radica and Otić, Goran and Perišić, Jasmina and Vasović, Ivana",
year = "2017",
abstract = "Ventilation mill for grinding coal is one of the main steam power plants in the system that makes a significant effect on the level of energy efficiency with its work. The aim of this paper is to increase the energy efficiency of thermo power plant Kostolac B by reducing the problem of wear in ventilation mill for coal grinding. The idea of this research is to investigate the optimum hardfacing technologies to increase wear resistance of impact plates in ventilation mill. Before applying hardfacing on impact plates in the exploitation conditions, it is necessary to model test hardfaced samples for determination of the optimal technology and fillermaterial for revitalization. The relative weight loss of the impact plates after 1440 h period of exploitation in real conditions is very small, 5-8%. The application of this approach can reduce the number of possible repairs and extends the period between them, resulting in significant economic effects. Before and after revitalization of ventilationmill is conducted analyzing of failure during the working period. In this paper, we present time of repair of ventilation mills number 22, 23, 24 and 25, the number of repairs before and after revitalization and cost of repairs.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Energy Sources Part B-Economics Planning and Policy",
title = "Increase energy efficiency of thermal power plant Kostolac B by revitalization ventilation mills",
pages = "197-191",
number = "2",
volume = "12",
doi = "10.1080/15567249.2015.1014977"
}

Ristić, M., Radovanović, L., Prokić-Cvetković, R., Otić, G., Perišić, J.,& Vasović, I.. (2017). Increase energy efficiency of thermal power plant Kostolac B by revitalization ventilation mills. in Energy Sources Part B-Economics Planning and Policy
Taylor & Francis Inc, Philadelphia., 12(2), 191-197.
https://doi.org/10.1080/15567249.2015.1014977

Ristić M, Radovanović L, Prokić-Cvetković R, Otić G, Perišić J, Vasović I. Increase energy efficiency of thermal power plant Kostolac B by revitalization ventilation mills. in Energy Sources Part B-Economics Planning and Policy. 2017;12(2):191-197.
doi:10.1080/15567249.2015.1014977 .

Ristić, Marko, Radovanović, Ljiljana, Prokić-Cvetković, Radica, Otić, Goran, Perišić, Jasmina, Vasović, Ivana, "Increase energy efficiency of thermal power plant Kostolac B by revitalization ventilation mills" in Energy Sources Part B-Economics Planning and Policy, 12, no. 2 (2017):191-197,
https://doi.org/10.1080/15567249.2015.1014977 . .

TY  - JOUR
AU  - Ristić, Marko
AU  - Prokić-Cvetković, Radica
AU  - Kozić, Mirko
AU  - Ristić, Slavica
AU  - Pavišić, Mirko N.
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2366
AB  - Ovaj rad prestavlja mogućnost korišćenja rezltata numeričkih simulacija, za smanjenje habanja radnih delova ventilacionog mlina za mlevenje uglja u termoelektrani Kostolac B. Mogućnost revitalizacije usisnih ploča ventilacionog mlina je zasnovan na 3D numeričkoj simulaciji multifaznog strujanja u ventilacionom mlinu. Čvrste čestice smeše ugalj, mineralne materije, pesak tokom procesa mlevenja izazivaju veliko habanje usisnih ploča. Primenom softverskog paketa ANSYS FLUENT 12, dobiće se detaljniji prikaz multifaznog strujanja i brzine mešavine koja omogućuje da se na osnovu intenziteta i smera brzine, preciznije odrede kritične zone u kojima će se pojaviti oštećenja kod usisnih ploča ventilacionog mlina. Korišćen je Euler-Euler model mešavine. Rezultati dobijeni pomoću numeričke simulacije koristiće se za izbor optimalne tehnologije revitalizacije usisnih ploča ventilacionog mlina. Primenom ovog pristupa rešavanja problema smanjio bi se broj mogućih interventnih popravki i produžio bi se period između neophodnih kompletnih remonta postrojenja, čime bi se ostvarili značajni ekonomski efekti i ujedno povećala energetska efikasnost termoenergetskih agregata.
AB  - This paper presents results of the analyses obtained by numerical simulation for the possibilities of increasing the wear resistance of the ventilation mill working parts for coal grinding in the Kostolac B power plant. The possibilities for modification are based on 3D numerical simulation of multiphase flow of ventilation mill. Mineral materials during the process of milling in the ventilation mill cause strong wear of the suction plates. The multiphase flow simulations are performed in order to obtain the mineral materials paths and velocity vectors. The mixture model of the Euler-Euler approach is used. The results obtained in the numerical simulation serve for the selection of an optimal redesign of the suction plates. The application of this approach can reduce the number of possible repairs and extends the period between them, resulting in significant economic effects.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Numerička simulacija multifaznog strujanja oko usisnih ploča ventilacionog mlina u funkciji produžetka preostalog radnog veka
T1  - Numerical simulation of multiphase flow around suction plates of ventilation mill in the function of extending its remaining working life
EP  - 158
IS  - 2
SP  - 154
VL  - 44
DO  - 10.5937/fmet1602154R
ER  - 

@article{
author = "Ristić, Marko and Prokić-Cvetković, Radica and Kozić, Mirko and Ristić, Slavica and Pavišić, Mirko N.",
year = "2016",
abstract = "Ovaj rad prestavlja mogućnost korišćenja rezltata numeričkih simulacija, za smanjenje habanja radnih delova ventilacionog mlina za mlevenje uglja u termoelektrani Kostolac B. Mogućnost revitalizacije usisnih ploča ventilacionog mlina je zasnovan na 3D numeričkoj simulaciji multifaznog strujanja u ventilacionom mlinu. Čvrste čestice smeše ugalj, mineralne materije, pesak tokom procesa mlevenja izazivaju veliko habanje usisnih ploča. Primenom softverskog paketa ANSYS FLUENT 12, dobiće se detaljniji prikaz multifaznog strujanja i brzine mešavine koja omogućuje da se na osnovu intenziteta i smera brzine, preciznije odrede kritične zone u kojima će se pojaviti oštećenja kod usisnih ploča ventilacionog mlina. Korišćen je Euler-Euler model mešavine. Rezultati dobijeni pomoću numeričke simulacije koristiće se za izbor optimalne tehnologije revitalizacije usisnih ploča ventilacionog mlina. Primenom ovog pristupa rešavanja problema smanjio bi se broj mogućih interventnih popravki i produžio bi se period između neophodnih kompletnih remonta postrojenja, čime bi se ostvarili značajni ekonomski efekti i ujedno povećala energetska efikasnost termoenergetskih agregata., This paper presents results of the analyses obtained by numerical simulation for the possibilities of increasing the wear resistance of the ventilation mill working parts for coal grinding in the Kostolac B power plant. The possibilities for modification are based on 3D numerical simulation of multiphase flow of ventilation mill. Mineral materials during the process of milling in the ventilation mill cause strong wear of the suction plates. The multiphase flow simulations are performed in order to obtain the mineral materials paths and velocity vectors. The mixture model of the Euler-Euler approach is used. The results obtained in the numerical simulation serve for the selection of an optimal redesign of the suction plates. The application of this approach can reduce the number of possible repairs and extends the period between them, resulting in significant economic effects.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Numerička simulacija multifaznog strujanja oko usisnih ploča ventilacionog mlina u funkciji produžetka preostalog radnog veka, Numerical simulation of multiphase flow around suction plates of ventilation mill in the function of extending its remaining working life",
pages = "158-154",
number = "2",
volume = "44",
doi = "10.5937/fmet1602154R"
}

Ristić, M., Prokić-Cvetković, R., Kozić, M., Ristić, S.,& Pavišić, M. N.. (2016). Numerička simulacija multifaznog strujanja oko usisnih ploča ventilacionog mlina u funkciji produžetka preostalog radnog veka. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 44(2), 154-158.
https://doi.org/10.5937/fmet1602154R

Ristić M, Prokić-Cvetković R, Kozić M, Ristić S, Pavišić MN. Numerička simulacija multifaznog strujanja oko usisnih ploča ventilacionog mlina u funkciji produžetka preostalog radnog veka. in FME Transactions. 2016;44(2):154-158.
doi:10.5937/fmet1602154R .

Ristić, Marko, Prokić-Cvetković, Radica, Kozić, Mirko, Ristić, Slavica, Pavišić, Mirko N., "Numerička simulacija multifaznog strujanja oko usisnih ploča ventilacionog mlina u funkciji produžetka preostalog radnog veka" in FME Transactions, 44, no. 2 (2016):154-158,
https://doi.org/10.5937/fmet1602154R . .

TY  - CONF
AU  - Stanković, Miloš
AU  - Ristić, Miloš
AU  - Alil, Ana
AU  - Ristić, Marko
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7468
AB  - In this paper it is presented reparation of steel construction of self-propelled crane telescopic boom by welding. By doing visual inspection of self-propelled crane, it is noticed numerous cracks and deformations at the outer and inner surface of steel construction at base metal and weld, both. Based on results of examination, it is decided to do reparation by welding in order to reduce influence of residual stresses
C3  - Proceedings of the XX International Conference MHCL’12
T1  - Reparation of Steel Construction of Vehicle-mounted Self-propelled Crane's Telescopic Boom
EP  - 312
SP  - 309
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7468
ER  - 

@conference{
author = "Stanković, Miloš and Ristić, Miloš and Alil, Ana and Ristić, Marko",
year = "2012",
abstract = "In this paper it is presented reparation of steel construction of self-propelled crane telescopic boom by welding. By doing visual inspection of self-propelled crane, it is noticed numerous cracks and deformations at the outer and inner surface of steel construction at base metal and weld, both. Based on results of examination, it is decided to do reparation by welding in order to reduce influence of residual stresses",
journal = "Proceedings of the XX International Conference MHCL’12",
title = "Reparation of Steel Construction of Vehicle-mounted Self-propelled Crane's Telescopic Boom",
pages = "312-309",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7468"
}

Stanković, M., Ristić, M., Alil, A.,& Ristić, M.. (2012). Reparation of Steel Construction of Vehicle-mounted Self-propelled Crane's Telescopic Boom. in Proceedings of the XX International Conference MHCL’12, 309-312.
https://hdl.handle.net/21.15107/rcub_machinery_7468

Stanković M, Ristić M, Alil A, Ristić M. Reparation of Steel Construction of Vehicle-mounted Self-propelled Crane's Telescopic Boom. in Proceedings of the XX International Conference MHCL’12. 2012;:309-312.
https://hdl.handle.net/21.15107/rcub_machinery_7468 .

Stanković, Miloš, Ristić, Miloš, Alil, Ana, Ristić, Marko, "Reparation of Steel Construction of Vehicle-mounted Self-propelled Crane's Telescopic Boom" in Proceedings of the XX International Conference MHCL’12 (2012):309-312,
https://hdl.handle.net/21.15107/rcub_machinery_7468 .

TY  - JOUR
AU  - Alil, Ana
AU  - Ristić, Marko
AU  - Stanković, Miloš
AU  - Ristić, Miloš
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1428
AB  - Prilikom sanacije težilo se optimalnoj primeni postupaka u cilju svođenja uticaja dodatnih napona i deformacija na minimum koji su neminovni pratilac sanacije. Primenom opisane tehnologija zavarivanja uspešno je izvršena sanacija čelične konstrukcije strele samohodne autodizalice TADAHO TL 200 II/K nosivosti 95t. Nakon sanacije (Slika 5) urađena je kontrola zavarenih spojeva (vizuelno, penetrantsko i radiografsko ispitivanje). Posle završenih kontrolnih ispitivanja, izvršena je montaža svih pet segmenata strele autodizalice na noseće vozilo, urađena je proba nosivosti autodizalice, nakon čega je ona puštena u eksploataciju.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Sanacija čelične konstrukcije strele samohodne autodizalice TADAHO TL 200 II/K
T1  - Repair of steel construction on truck-mounted crane TADAHO TL 200 II/K
EP  - 174
IS  - 4
SP  - 169
VL  - 57
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1428
ER  - 

@article{
author = "Alil, Ana and Ristić, Marko and Stanković, Miloš and Ristić, Miloš",
year = "2012",
abstract = "Prilikom sanacije težilo se optimalnoj primeni postupaka u cilju svođenja uticaja dodatnih napona i deformacija na minimum koji su neminovni pratilac sanacije. Primenom opisane tehnologija zavarivanja uspešno je izvršena sanacija čelične konstrukcije strele samohodne autodizalice TADAHO TL 200 II/K nosivosti 95t. Nakon sanacije (Slika 5) urađena je kontrola zavarenih spojeva (vizuelno, penetrantsko i radiografsko ispitivanje). Posle završenih kontrolnih ispitivanja, izvršena je montaža svih pet segmenata strele autodizalice na noseće vozilo, urađena je proba nosivosti autodizalice, nakon čega je ona puštena u eksploataciju.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Sanacija čelične konstrukcije strele samohodne autodizalice TADAHO TL 200 II/K, Repair of steel construction on truck-mounted crane TADAHO TL 200 II/K",
pages = "174-169",
number = "4",
volume = "57",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1428"
}

Alil, A., Ristić, M., Stanković, M.,& Ristić, M.. (2012). Sanacija čelične konstrukcije strele samohodne autodizalice TADAHO TL 200 II/K. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 57(4), 169-174.
https://hdl.handle.net/21.15107/rcub_machinery_1428

Alil A, Ristić M, Stanković M, Ristić M. Sanacija čelične konstrukcije strele samohodne autodizalice TADAHO TL 200 II/K. in Zavarivanje i zavarene konstrukcije. 2012;57(4):169-174.
https://hdl.handle.net/21.15107/rcub_machinery_1428 .

Alil, Ana, Ristić, Marko, Stanković, Miloš, Ristić, Miloš, "Sanacija čelične konstrukcije strele samohodne autodizalice TADAHO TL 200 II/K" in Zavarivanje i zavarene konstrukcije, 57, no. 4 (2012):169-174,
https://hdl.handle.net/21.15107/rcub_machinery_1428 .