Mathematical model for the fragmentation of copper matte particles oxidized under flash converting conditions

Manuel Pérez-Tello*, Irma María Madrid-Ortega, Hong Yong Sohn

*Autor correspondiente de este trabajo

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

A mathematical model to represent the expansion and fragmentation of copper matte particles oxidized under flash converting conditions is presented. The model assumes the particles to be initially nonporous, have a constant mass prior to fragmentation, and travel at a constant velocity throughout the reaction chamber. The model requires the specification of five parameters: the particle expansion rate, a fragmentation diameter factor, a fragmentation size distribution parameter, and the fractions of the finest and the coarsest particles in the feed that undergo fragmentation. The model predictions show good agreement with experimental data collected in a laboratory flash converting furnace over a wide range of experimental conditions. The evolution of the size distribution of the particles along the reactor length was computed, and the model parameters were correlated with the experimental operating variables. Model predictions indicate that particle residence time is an important factor in the generation of dust. The presence of two maxima in the particle density function may be attributed to turbulent conditions prevailing in the furnace, which cause particles to follow very different trajectories within the furnace even if they are injected at the same location.

Idioma originalInglés
Título de la publicación alojadaSohn International Symposium
Subtítulo de la publicación alojadaAdvanced Processing of Metals and Materials - Proceedings of the International Symposium
Páginas577-590
Número de páginas14
EstadoPublicada - 2006
Evento2006 TMS Fall Extraction and Processing Division: Sohn International Symposium - San Diego, CA, Estados Unidos
Duración: 27 ago. 200631 ago. 2006

Serie de la publicación

Nombre2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
Volumen8

Conferencia

Conferencia2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
País/TerritorioEstados Unidos
CiudadSan Diego, CA
Período27/08/0631/08/06

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