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Academic literature on the topic 'Broyeurs à boulets'
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Journal articles on the topic "Broyeurs à boulets"
Camurri, C., C. Carrasco, and P. Cañete. "Étude de la modification du traitement thermique dans la chaude de transformation des boulets de broyeurs." Revue de Métallurgie 94, no. 7-8 (July 1997): 949–54. http://dx.doi.org/10.1051/metal/199794070949.
Full textChastang, J., H. Hue, and A. Lafaye. "Influence de la masse de substance sur la cinétique du broyage dans un broyeur à boulets de laboratoire." Powder Technology 62, no. 1 (July 1990): 27–33. http://dx.doi.org/10.1016/0032-5910(90)80019-u.
Full textDissertations / Theses on the topic "Broyeurs à boulets"
Mirambet, Marc. "Commande adaptative d'un broyeur-sécheur pour la fabrication d'engrais." Nancy 1, 1991. http://www.theses.fr/1991NAN10084.
Full textOrozco, Luisa. "Modélisation numérique et rhéologie des milieux granulaires à particules fragmentables en vue d’application aux broyeurs à boulets." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTS101.
Full textA crucial step of nuclear fuel manufacture is the co-milling of uranium and plutonium oxides to obtain a targeted particle size and excellent mixing. However, the scale-up from the laboratory to plant production is still mainly empirical. The goal of this doctoral thesis is to model and characterize granular flows in rotating drums and to elucidate the mechanisms of particle grinding across scales. By means of particle dynamics simulations and a particle breaking model involving the tessellation of breakable particles into cells and a dynamic debonding criterion based on fracture mechanics, we investigate single- particle impacts, the properties of granular flows in the cascading regime in a rotating drum as a function of system parameters, the effect of the size and amount of grinding media on the grinding process, and the evolution of particle breakage in granular flows of breakable particles. Our simulations reveal several well- defined relationships between flow variables such as surface profile, flowing thickness, force fluctuations and wall slip, as well as with system parameters such as rotation speed, drum size and filling degree, and with particle fracture during flow. We identify a dimensionless parameter that can be used for the scale-up of rotating drums
Quispe, Quispe Rolando. "Effets des conditions d'opération d'un broyeur à boulets 40x40 cm sur la rétention des corps broyant de petite taille." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25476.
Full textObiang, Patricia. "Évaluation des interactions dimension de boulets - concentration en solides de la pulpe sur l'efficacité de broyage." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24762/24762.pdf.
Full textAbou, Séraphin Chally. "Contribution à la modélisation du broyeur à boulets." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0022/NQ31479.pdf.
Full textCôté, Christine. "Modélisation et visualisation de la charge dans un broyeur à boulets." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0015/MQ53934.pdf.
Full textALBERA, FABIEN. "La modelisation du broyage en mineralurgie : inventaire des modeles developpes, confrontation avec les performances d'installations reelles, criteres de selection." Orléans, 1987. http://www.theses.fr/1987ORLE2023.
Full textBarguet, Laurianne. "Contrôle acoustique et vibratoire de la mécano-synthèse des matériaux composites à matrice métallique nanostructurés." Thesis, Le Mans, 2015. http://www.theses.fr/2015LEMA1027/document.
Full textDuring the ODS steel (Oxide Dispersion Strengthened) synthesis, the first stage consists in an active milling between original materials, which are metallic powder and oxide to obtain reinforced micro/nanoscale dispersions. This process, known as mechanical alloying, could be realized by balls milling composed by a cylindrical tank rotating around its main axis, within which steel beads are introduced. The grinding results from different combinations of collisions between beads and powders on the tank walls, that lead to morphological grain powder evolution (grain size and shape). The first part of this thesis proposes an ultrasonic method to characterize the metallic powder. An experimental method, which consists in acoustic probing for measuring linear acoustic parameters (longitudinal wave velocity and elastic modulus) of a slab of powder sample, appears to be suitable to follow different mechanical alloying stages. A dependence of the acoustic parameters on the morphological characteristics of metallic powder (grain shape and grain size distribution) is shown with the same sample preparation and the same confining pressure. In the second part, optimization process by identification of ball milling optimal rotation speed is researched in a first step. Correlation between acoustic or vibration signals and bead motion versus rotation speed, shows that acoustic and vibration energy are good indicators that can be used to find the optimal rotation speed. In a second step, acoustic and vibration measures are used to follow grain material properties evolution during a grinding (for a period of 176hrs) and to identify powder clogging mechanism on a milling tank