Process and apparatus for the treatment of a material

B - Operations – Transporting – 29 – B

Patent

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Details

B29B 17/00 (2006.01) B02C 18/08 (2006.01) B02C 18/12 (2006.01) B02C 23/26 (2006.01)

Patent

CA 2678246

The invention relates to a process and an apparatus for the treatment of a material in the form of fragments or particles which is moved and/or rotated, mixed, heated and, if appropriate, comminuted by at least one mixing element (12, 21) in a receiver or cutter-compactor (1), where, in the course of the process, undesired substances which impair the treatment of and/or further operations on the material are removed from the material by introducing a gas, in particular air or an inert gas, in a region below the level of the material located in the receiver (1) during its operation, or below the level of material of the mixing vortex which forms within the receiver (1), where the gas is forced to flow through at least a subregion of the material, and where the gas then saturated with, or with an increased concentration of, undesired substances is discharged from the receiver (1) in a region above the level of the material located in the receiver (1) during its operation or above the level of the material of the mixing vortex.

L'invention concerne un procédé ainsi qu'un dispositif pour préparer un matériau se présentant sous forme de morceaux ou de particules, agité ou amené en rotation, mélangé, chauffé et éventuellement broyé dans un récipient ou un compresseur-découpeur (1) par au moins un outil mélangeur (12, 21). Au cours du procédé, les impuretés indésirables qui affectent la préparation ou le traitement ultérieur du matériau sont éliminées de ce dernier en introduisant à l'intérieur du récipient (1) un gaz, en particulier de l'air ou un gaz inerte, dans une partie en dessous du niveau du matériau se trouvant dans le récipient (1) en fonctionnement, ou en dessous du niveau du matériau de la trombe de mélange en formation. Le gaz, en formant un écoulement forcé, est guidé à travers au moins une partie du matériau et est ensuite évacué hors du récipient (1) sous forme enrichie en ou saturée par les impuretés, dans une région au-dessus du niveau du matériau se trouvant dans le récipient pendant le fonctionnement ou au-dessus du niveau de matériau de la trombe de mélange.

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