Systems and methods for cleaning a batch of granular material

An apparatus (100) and method cleans a batch of pellets or granules prior to use in an extrusion process. Loose contaminants having material characteristics that are undersired for the extruded product are first removed (110) from the batch using a deduster. The deduster may also remove uncontaminat...

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Bibliographische Detailangaben
1. Verfasser:	MAUNDER ANDREW
Format:	Patent
Sprache:	eng
Schlagworte:	OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL PERFORMING OPERATIONS POSTAL SORTING SEPARATING SOLIDS FROM SOLIDS SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS SORTING SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTEDPIECE-MEAL, e.g. BY PICKING TRANSPORTING
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Beschreibung
Zusammenfassung:	An apparatus (100) and method cleans a batch of pellets or granules prior to use in an extrusion process. Loose contaminants having material characteristics that are undersired for the extruded product are first removed (110) from the batch using a deduster. The deduster may also remove uncontaminated fines and fluff from the batch. Pellets that are defective or otherwise undersired for the extrusion process as well as other loose particle contaminants can then be efficiently detected and removed (120) without the risks of fines clogging the apparatus or shielding the detection process. Magnets may help remove (130) particulates of ferrous material before or after the removal (120) of defective pellets. The resulting batch of pellets helps to produce extruded materials of higher quality, such as insulation material in electrical cables.