Artículo
Effects of the speed ratio on the efficiency of planetary mills
Autor/es | Real Pérez, Concepción
Gotor Martínez, Francisco José |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2019 |
Fecha de depósito | 2020-05-06 |
Publicado en |
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Resumen | The ignition time (tig) of the mechanically induced self-sustaining reaction (MSR) process involving the formation of TiB2 from Ti/2B elemental mixtures was used to study the influence of the ratio (k = -ωv/ωd) between the ... The ignition time (tig) of the mechanically induced self-sustaining reaction (MSR) process involving the formation of TiB2 from Ti/2B elemental mixtures was used to study the influence of the ratio (k = -ωv/ωd) between the rotational speed of the supporting disc (ωd) and vials (ωv) on the milling efficiency of a Pulverisette 4 planetary mill. The variation of the inverse of the ignition time (1/tig), which is directly related to the milling power provided by the planetary mill, with the process conditions has shown that it is not possible to find a single k value as optimal independently of the experimental conditions used (ωd and the ball-to-powder ratio, BPR). Moreover, it was observed that the lowest milling efficiency (longer tig values) was found for k = 1, which is the usual value employed in routine laboratory works. The best efficiencies were found for the larger k values (2.5 or 3). At lower ωd, the shortest tig was obtained for k = 2.5 and at higher ωd for k = 3, independently of BPR. |
Agencias financiadoras | Secretaría de Estado de Universidades, investigación, Desarollo e Innovación, España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | MAT2014-52407-R |
Cita | Real Pérez, C. y Gotor Martínez, F.J. (2019). Effects of the speed ratio on the efficiency of planetary mills. Heliyon, 5 (2), 1-14. |
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