Method and apparatus for processing particulate material

B - Operations – Transporting – 03 – B

Patent

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Details

B03B 13/00 (2006.01) B03B 9/00 (2006.01) G01F 1/74 (2006.01) G01N 9/26 (2006.01) G01N 9/36 (2006.01) G01N 15/02 (2006.01)

Patent

CA 2512902

A method and apparatus for processing particulate material such as coal, and also for measuring the efficiency of separation of the coal is disclosed. Particulate material is supplied to a separator such as a heavy medium device containing a dense medium (6). A parameter of the device (6) indicative of separation cut point is measured. The parameter may be density of the medium, flow rate of material or pressure of feed as well as medium to coal ratio. Measurements of these parameters are made over a time period and, from the measurements, an induced value indicative of separating efficiency is determined. The induced value provides a measure of separation efficiency and also provides a value which can be compared with a predetermined value so that an alarm can be generated if the value departs from the predetermined value by a predetermined amount.

L'invention concerne un procédé et un appareil permettant de traiter un matériau paticulaire tel que du charbon, et de mesurer l'efficacité de séparation dudit charbon. Le matériau particulaire est fourni à un séparateur tel qu'un dispositif (6) à support lourd contenant un milieu dense. On mesure un paramètre du dispositif (6) indicateur du point de coupure de séparation. Le paramètre peut être la densité du milieu, le débit du matériau ou la pression d'alimentation ainsi que le milieu par rapport au pourcentage de charbon. On effectue les mesures de ces paramètres pendant une certaine durée et, à partir de ces mesures, on détermine une valeur induite indicatrice de l'efficacité de la séparation. Cette valeur induite fournit une mesure de l'efficacité de la séparation ainsi qu'une valeur pouvant être comparée avec une valeur prédéterminée, de sorte qu'une alarme peut être générée lorsque la valeur diffère de la valeur prédéterminée d'une quantité prédéterminée.

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