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Wyszukujesz frazę "Mill" wg kryterium: Temat


Tytuł:
Eti Copper Siirt flotation plant revision studies
Autorzy:
Kara, Yaşar
Tatar, Ali
Hasyamanlar, Ahmet
Powiązania:
https://bibliotekanauki.pl/articles/24085594.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
flotation
hydrocyclone
scavenger
SAG Mill
recovery
ball mill
Opis:
Several optimization studies were made to increase metal recovery and reduce operational costs of the concentrator in Siirt Madenköy copper mine. In consequence of these studies, effects of the changes in operating parameters, cost and plant recovery will be examined at this article. In this article, we will discuss two important revision studies, which are (i) replacement of 500 mm hydrocyclone set used in ball mills with 350 mm of hydrocyclone set, (ii) replacing the present Ball Mill with a SAG mill. Correspondingly elimination of the crushing and screening plant, (iii) increasing the scavenger cells from 4 to 6 by the addition of 2 more cells. In consequence with this feeding the middling tail to the increased scavenger cells which was treated as a part of final tail before this change. We will examine the effect of all these changes to the final recovery, concentrate grade and final cost.
Źródło:
Physicochemical Problems of Mineral Processing; 2023, 59, 5; art. no. 166260
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selective comminution and grinding mechanisms of spent carbon anode from aluminum electrolysis using ball and rod mills
Autorzy:
Ni, Chao
Zhou, Shaoqi
Gao, Jixuan
Bu, Xiangning
Chen, Yuran
Alheshibri, Muidh
Xie, Guangyuan
Li, Biao
Powiązania:
https://bibliotekanauki.pl/articles/2146907.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
selective comminution
ball mill
rod mill
spent carbon anode
grinding mechanizm
Opis:
The recovery of spent carbon anode (SCA) materials plays important roles in environment protection and resources recycling, while this cannot be efficiently achieved without liberation. In this study, grinding characteristics of spent carbon anode from aluminum electrolysis in both ball mill and rod mill were analyzed, and compared based on the utilization of the selective Fuerstenau upgrading curves. In addition, the different grinding mechanisms of ball and rod milling were evaluated by analyzing the shape factor and surface roughness of the ground samples. Results of mineralogical characterizations indicated that carbon particles (d50 = 46.86 μm) presented in the SCA were closely associated with cryolite particles. At 5 min grinding time, the maximum selective comminution factor (β) values of ball milling and rod milling were 2.00 and 1.63, respectively, indicating a higher degree of selective comminution of SCA was achieved from ball milling. Comparisons of the valuable component content (cv, cum) of -125 μm ground particles and the shape characterizations of 74–125 μm ground particles generated from ball and rod milling manifest that a direct relationship exists between the degree of selective comminution and the grinding mechanism.
Źródło:
Physicochemical Problems of Mineral Processing; 2022, 58, 3; art. no. 145667
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of ball size distribution on power draw, charge motion and breakage mechanism of tumbling ball mill by discrete element method (DEM) simulation
Autorzy:
Panjipour, R.
Barani, K.
Powiązania:
https://bibliotekanauki.pl/articles/110020.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
discrete element method
ball mill
ball size distribution
mill power
breakage mechanism
Opis:
In this research, the effect of ball size distribution on the mill power draw, charge motion regime and breakage mechanism in a laboratory ball mill was studied using the discrete element method (DEM) simulation. The mill shell and crushing balls were made of Plexiglas® and compressed glass, respectively. Modeling was performed using Particle Flow Code 3D (PFC3D). Model parameters were back-calculated by comparing the power draws and images obtained from simulation and laboratory test works. After determining the model parameters, the mill was simulated in mill fillings of 15, 20, 25, 30, 35 and 40% with ball media of 2 and 2.5 cm in diameter. For every mill filling, the numbers of big and small balls were changed and 11 scenarios were chosen. The results showed that at a constant mill filling, the power draw was changed with changing the ball size distribution and for all mill fillings the maximum power draw occurred when the fraction of small balls was between 30-40%. The effect of ball size distribution increased with increasing mill filling and for the mill filling of 35%, the ball size distribution had the maximum effect on the power draw. When the mill charge contained mono-sized balls, the ball flow regime inside the mill transited to the cataracting and impact breakage was the main breakage mechanism. Increasing the fraction of big balls from 0 to 70% led the flow of balls into the cascading regime and breakage mechanism to attrition.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 2; 258-269
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Possibilities of Obtaining the Fine Particle Size in Mills of Various Designs
Analiza możliwości uzyskania drobnego uziarnienia w młynach o różnych konstrukcjach
Autorzy:
Wołosiewicz-Głąb, M.
Foszcz, D.
Gawenda, T.
Powiązania:
https://bibliotekanauki.pl/articles/319028.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
młyny
rozdrabnianie surowców
mielniki
młyn elektromagnetyczny
młyn kulowy
młyn wibracyjny
IsaMill
mills
grinding process
grinding media
electromagnetic mill
ball mill
vibratory mill
Opis:
The paper presents the problem of obtaining the fine grained material in mills of different constructions. Various types of mills have been characterized, taking into account the type of grinding media used. Characteristics of selected mills and grinding media used were presented and the movement of the particles in the drum of the ball mill has been shown. Mills with mixed grinding media have been described. Model of "transport energy pulses" for free grinding media in the Kurrer’s tubular chamber of the vibratory mill were described. Paper discusses the advantages and opportunities for fine grinding in the electromagnetic mill, performance and in particular the energy cost of commimtion, that is achievable in this device.
W artykule przedstawiono problematykę uzyskiwania drobno uziarnionych materiałów w młynach o różnych konstrukcjach. Dokonano charakterystyki różnych rodzajów młynów z uwzględnieniem typu stosowanych mielników. Pokazano charakterystykę wybranych młynów i użytych w nich mielników. Opisano ruch ziarna w bębnie młyna kulowego, a także model „transportu impulsów energii” ku mielnikom w rurowej komorze młyna wibracyjnego według Kurrera. Omówiono zalety i możliwości w zakresie drobnego mielenia w młynie elektromagnetycznym w szczególności wydajność oraz wydatek energii na rozdrabnianie, jakie możliwe jest do uzyskania w tym urządzeniu.
Źródło:
Inżynieria Mineralna; 2016, R. 17, nr 1, 1; 223-231
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First-order and second-order breakage rate of coarse particles in ball mill grinding
Autorzy:
Barani, K.
Balochi, H.
Powiązania:
https://bibliotekanauki.pl/articles/109734.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ball mill
grinding kinetic
particle breakage
Opis:
It has been observed by many authors that the breakage rates of coarse particles in a ball mill slow down with increasing grinding time and deviate from the first order. In this paper it is intended to find out whether the breakage rates of coarse particles obey second-order kinetics or not. For this purpose, quartz, limestone, iron ore and a mixture of quartz/limestone (weight ratio of 1:1) were selected as a ball mill feed. The first-order breakage rate was determined for the four particle sizes of quartz, limestone, iron ore and the mixture of quartz/limestone. Results indicating good first-order kinetics were obtained with the fine-sized particles (-1.2+1 mm, -0.6+0.42 mm). However, the coarse-sized particles (-5+4 mm, -3.15+2.5 mm) showed deviations from the first order. These coarse particles were in the abnormal breakage region. The second-order breakage rate was determined for the coarse particles (-5+4 mm, -3.15+2.5 mm). It can be seen that, for both sizes and all the materials, the second-order plot had better fit than the first-order plot. Also, it can be concluded that the second-order kinetics could model the breakage of coarse particles better than the first-order kinetics, and the validity of the second-order breakage rate was increased with increasing particle size. However, it is suggested to examine the validity of the second-order breakage rate kinetics for other materials and particle sizes.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 1; 268-278
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected mineral materials grinding rate and its effect on product granulometric composition
Autorzy:
Olejnik, T. P.
Powiązania:
https://bibliotekanauki.pl/articles/110220.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ball mill
specific grinding rate
contact points
size distribution
Opis:
The article presents investigation on the grinding rate constant. A selection function was measured for different raw materials using a ball mill, and effects of the grinding ball diameter and feed particle sizes on the materials grinding rate constant were investigated. The study was conducted for the mill on a semi-technical scale. The process was carried out periodically using several sets of grinding media. Relations for all investigated materials were expressed by the modified Snow equation. Additionally, the descriptions of the grinding rate was examined. The tendency in the variation of the grinding rate constant with the particle size was similar for all materials used, and was independent of the ball diameter. The author used two selection functions derived theoretically by Tanaka.
Źródło:
Physicochemical Problems of Mineral Processing; 2013, 49, 2; 407-418
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The relationships between the kinetic grinding parameters with interstitial fillings and the liberation degree of a chromite ore
Autorzy:
Umucu, Yakup
Deniz, Vedat
Gursoy, Hakan Y.
Tokcan, Isıl
Arsoy, Zeyni
Powiązania:
https://bibliotekanauki.pl/articles/24148630.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
grinding
ball mill
kinetic model
liberation degree
interstitial filling
Opis:
In this study, the relationships between the liberation degree and the kinetic breakage parameters of a chromite ore obtained from the Burdur (Türkiye) were examined under the laboratory conditions. Firstly, liberation degrees for chromite particles were determined by the particle counting method in a metal microscope for 4 different size groups. Secondly, the breakage parameter of chromite ore which was dry ground with a ball mill was obtained using standard test methods. Additionally, the model parameters were also determined for the fractional interstitial fillings (U) of the chromite sample. Thirdly, the kinetic grinding parameters were compared with the liberation degree of the chromite sample. As a result of the tests, a very good correlation was obtained with R2=0.998, and regression analysis in the grinding processing of the chromite ore was used to verify the validity of the relationship parameter of Si that was produced. To these, it was found that interstitial fillings (U=0.6, 0.8, 1.0, and 1.2) have an effect on the grinding.
Źródło:
Physicochemical Problems of Mineral Processing; 2023, 59, 5; art. no. 168254
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetic grinding test approach to estimate the ball mill work index
Autorzy:
Gharehgheshlagh, H. H.
Powiązania:
https://bibliotekanauki.pl/articles/109794.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
work index
Bond method
kinetic grinding test
grindability
ball mill
Opis:
The standard Bond method is the most acceptable method for designing and selecting ball/rod mills described by their basic parameter called work index (Wi). The standard Bond method is a tedious time consuming procedure requiring at least 7 – 10 grinding cycles, so that many researchers have tried to simplify this method to be able to perform a rapid calculation of a work index. This study aims to develop a new approach toward estimating the Bond ball mill work index (BBWI) by applying a series of kinetic grinding tests with Bond standard mill. Establishing a series of relationships between grinding parameters and Bond equation parameters, this approach is fast and practical due to eliminating laboratory control steps while reducing the number of milling steps. In this scope, thirteen ore samples were used to compare Wi values obtained by standard Bond method with those of the proposed kinetic approach. The kinetic periods were determined as 0.33, 1, 2, 4 and 8 minutes. The results of kinetic tests were found to be logical and acceptable as they were so close to the values obtained by Bond standard method, for all samples error was ≤ 2.60%. It was therefore concluded that the proposed approach could be considered as a simple yet practical alternative for the standard Bond method.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 1; 342-352
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on the particle size and shape of iron ore pellet feed using ball mill and HPGR grinding methods
Autorzy:
Abazarpoor, A.
Halali, M.
Powiązania:
https://bibliotekanauki.pl/articles/109944.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
HPGR
ball mill
particle size
particle shape
image analysis
SEM
Opis:
An effect of a grinding method, that is ball mill and high pressure grinding rolls (HPGR), on the particle size, specific surface area and particle shape of an iron ore concentrate was studied. The particle size distribution was meticulously examined by sieve, laser and image analyses. To measure the specific surface area of particles, Brunauer-Emmett-Teller (BET) and Blaine methods were used. It was found that for samples having equal Blaine specific surface areas numbers, the amount of fine particles produced in HPGR was higher than that produced in a ball mill. A higher surface area was observed from HPGR treatment in comparison to ball mill grinding, provided by a higher porosity, cracks, roughness and new surfaces. A shape factor of particles was determined using the circularity, roughness, and aspect ratio. It was also observed that HPGR produced particles that were more elongated, less circular and rougher than those processed by the ball mill.
Źródło:
Physicochemical Problems of Mineral Processing; 2017, 53, 2; 908-919
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testy mielenia koksiku z wykorzystaniem młyna kulowego
Coke breeze grinding tests with use of ball mill
Autorzy:
Micorek, T.
Robak, J.
Rejdak, M.
Różycki, G.
Jakubina, G.
Powiązania:
https://bibliotekanauki.pl/articles/109286.pdf
Data publikacji:
2017
Wydawca:
AXIS MEDIA
Tematy:
koksik
mielenie
testy
młyn kulkowy
coke breeze
grinding
tests
ball mill
Opis:
W pracy przedstawiono wyniki testów mielenia koksiku do uziarnienia poniżej 0,2 mm w młynie bębnowym kulowym. Jako mielniki zastosowano polidyspersyjne złoże kul ceramicznych. Mielenie prowadzono w sposób periodyczny w czasie 15 godzin, pobierając w określonych odcinkach czasowych próbkę produktu mielenia. Surowiec wyjściowy i próbki produktu poddano analizie rozkładu ziarnowego. Stwierdzono, że możliwe jest zmielenie koksiku w stopniu zapewniającym uzyskanie ponad 90 % m/m w produkcie ziaren o rozmiarze poniżej 0,2 mm. Proces mielenia przebiegał najefektywniej w cią-gu pierwszych pięciu godzin procesu, wydłużenie czasu trwania procesu znacznie zmniejszyło efektywność procesu. Optymalnym rozwiązaniem w skali przemysłowej może być wykorzystanie młynów bębnowych w systemie mielenia wielozabiegowym, zamkniętym.
The paper presents the results of coke breeze grinding tests for particle sizes below 0.2 mm in a ball drum mill. A polydispersed ceramic balls were used as a grinding aid. Grinding was carried out in a batch manner during 15 hours, collecting a sample of the grinding product at specified time intervals. The starting raw material and product samples were analyzed for grain size distribution. It was found that it is possible to grind the coke breeze to a degree that provides more than 90% m / m in grains with a size below 0.2 mm. The milling process was the most effective during the first five hours of the process, the longer process duration significantly reduced the efficiency of the process. An optimal solution on an industrial scale can be the use of drum mills in a multi-gear and closed grinding system.
Źródło:
Piece Przemysłowe & Kotły; 2017, 1; 1-5
2082-9833
Pojawia się w:
Piece Przemysłowe & Kotły
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improvement of the accuracy of Hogg and Fuerstenaus model in predicting the power draw of ball mills based on determining the grinding media’s dynamic voidage
Autorzy:
Golpayegani, Mohammad Hasan
Rezai, Bahram
Powiązania:
https://bibliotekanauki.pl/articles/2175427.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
voidage
grinding media
ball mill
Hogg model
Fuerstenau's model
power draw
Opis:
In the development of tumbling mills' power models, the voidage of grinding media is assumed to be static and equal to 40%. While the grinding media’s voidage is dynamic; and hence is varied by changing the operating parameters. In this paper, to improve the Hogg and Fuerstenau model's accuracy in predicting the ball mills' power draw, the grinding media's static and dynamic voidage was studied for Bond's proposed ball size distributions (BSD) for the ball mills' first filling. To this end, by scaling down balls to one-tenth of actual size, developing a novel method to measure the dynamic voidage, and employing the three-level factorial method, a separate empirical model was developed for determining the dynamic voidage of each Bond's BSD with respect to mill's fractional filling and rotating speed. Moreover, using the multiple regression method, a general empirical model was derived to determine the dynamic voidage of each supposed BSD based on calculating the mean absolute deviation of balls diameter (MAD). Results indicated that grinding media's dynamic voidage increases with an increase in rotating speed and a decrease in fractional filling and balls diameter's MAD. The maximum and minimum static and dynamic voidage occurred for the seventh and first Bond's BSDs. By employing an industrial database and analyzing the mean absolute percentage error (MAPE) of predicted ball mills' power draw, it was found that the Hogg and Fuerstenau model's accuracy enhances by calculating the load's bulk density based on the grinding media's dynamic voidage.
Źródło:
Physicochemical Problems of Mineral Processing; 2022, 58, 6; art. no. 153380
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania cementów portlandzkich produkowanych w różnych systemach mielenia
Examinations of portland cements produced in different grinding systems
Autorzy:
Baran, T.
Pichniarczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/392348.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Ceramiki i Materiałów Budowlanych
Tematy:
cement portlandzki
przemiał cementu
młyn kulowy
młyn pionowy
właściwości cementu
rozkład ziarnowy
Portland cement
cement grinding
ball mill
vertical roller mill
cement properties
particle size distribution
Opis:
Proces przemiału cementu jest jedną z kluczowych operacji technologicznych w produkcji cementu. W przemyśle cementowym najbardziej rozpowszechnionymi instalacjami są młyny kulowe pracujące w zamkniętym obiegu. W trzech ostatnich dekadach coraz popularniejsze w cementowniach na świecie stają się młyny pionowe, umożliwiające uzyskanie wielu korzystniejszych parametrów procesowo-technologicznych. W Polsce, w ostatnich latach, uruchomiono dwie instalacje młynów pionowych. W artykule przedstawiono i porównano właściwości cementów wyprodukowanych w dwóch systemach mielących, w młynie pionowym i kulowym. Stwierdzono, że w zależności od systemu mielenia produkowany cement różni się istotnie rozkładem faz mineralnych w poszczególnych frakcjach mlewa. Determinuje to cechy użytkowe cementów – wytrzymałość i właściwości reologiczne.
Grinding process of cement is one of the most important technological operation in cement production. Ball mills with closed circuit are most common installations in the cement industry. Over last three decades vertical roller mills, which enable to achieve many beneficial process and technological parameters, have become more popular. In Poland two vertical roller mills were installed recently. In the paper properties cements produced in two different grinding systems were presented and compared. It was stated that distribution of mineral phases in fractions of cement differs significantly for grinding system of cement. It determines mechanical and rheological properties of cement.
Źródło:
Prace Instytutu Ceramiki i Materiałów Budowlanych; 2011, R. 4, nr 8, 8; 114-125
1899-3230
Pojawia się w:
Prace Instytutu Ceramiki i Materiałów Budowlanych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proces rozdrabniania w młynie kulowym opisany teorią momentów statystycznych
Grinding process in a ball mill by the theory of statistical moments
Autorzy:
Olejnik, Tomasz P.
Powiązania:
https://bibliotekanauki.pl/articles/2052445.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Skórzanego
Tematy:
rozdrabnianie
młyn kulowy
współczynniki
teoria momentów
grinding
ball mill
coefficients
moment theory
Opis:
W artykule przedstawiono wyniki badań mających na celu eksperymentalną weryfikację modelu rozdrabniania w młynie kulowym w oparciu o teorię momentów statystycznych. Badania kruszenia materiałów skalnych o różnej twardości przeprowadzono w młynie laboratoryjnym o objętości 6 dm3 . Dla określonych odstępów czasu pobierano próbki surowca z młyna i wykonano analizy granulometryczne, określając udziały procentowe produktu. Mielono cztery rodzaje materiału skalnego: gabro, kwarcyt, sjenit i piaskowiec żelazisty. Obliczono wartości momentów zerowych, momentów centralnych oraz współczynniki spłaszczenia i asymetrii. Zbadano zależności między tymi wartościami w funkcji czasu mielenia.
Results of investigations which aimed at experimental verification of the model of grinding in a ball mill based on the theory of moments are presented in the paper. Grinding tests for rock materials with different hardness were carried out in a laboratory mill 6 dm3 in volume. Particle size distribution of the material was determined in specified time intervals. Four types of rock material were milled: gabro, quartzite, syenite and ferruginous sandstone. The values of zero moments, central moments and coefficients of flattening and asymmetry were calculated. Relationships between these values as a function of milling time were examined.
Źródło:
Technologia i Jakość Wyrobów; 2021, 66; 148-158
2299-7989
Pojawia się w:
Technologia i Jakość Wyrobów
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetyka mielenia kwarcytu przy kaskadowym ruchu złoża nadawy
Grinding kinetics of selected raw materials considering the bulk movement
Autorzy:
Olejnik, T. P.
Gluba, T.
Obraniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/2070658.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
młyn kulowy
kinetyka rozdrabniania
wytrzymałość ziaren
ball mill
grinding kinetics
particles strength
Opis:
W pracy zbadano ruch złoża kwarcytu. Okreśłono zmianę składu granułometrycznego materiału w trakcie przemiału i na tej podstawie obliczono szybkości rozdrabniania poszczegółnych frakcji wymiarowych ziarna. Zbadano siły oraz naprężenia niszczące dła wybranych kłas rozmiarowych ziarna.
The bulk movement of quartzite in a ball mill was investigated. The change of mean particle size during grinding was described. The specific grinding ratę of setected partictes' size fractions was determined. The load and destructive stresses corresponding to partictes size fraction were defined.
Źródło:
Inżynieria i Aparatura Chemiczna; 2009, 4; 100-101
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical study of the regularities of wet coal grinding in ball mills at the preparation of water-coal fuel
Тeoreticheskie issledovanija zakonomernostejj mokrogo ismel'chenija ugla v sharovykh mel'nicakh pri prigotovlenija vodougol'nogo topliva
Autorzy:
Syomin, Y.
Bondar, T.
Powiązania:
https://bibliotekanauki.pl/articles/792997.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
theoretical investigation
coal grinding
water-coal fuel
ball mill
rotational speed
drum
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 1
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł

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