Method and device for fractionating bulk material
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United States of America Patent
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Aug 18, 2015
Grant Date -
Oct 9, 2014
app pub date -
May 2, 2012
filing date -
May 3, 2011
priority date (Note) -
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Abstract
The method for fractionating bulk material comprises the step of feeding the bulk material to at least one screen in a device (1) comprising at least one housing (10) with an inner space for receiving the screen. The housing (10) has at least one inlet (13) for feeding the bulk material and at least one outlet for discharging at least one fraction of the bulk material. The housing (10) has a roof (15) and a floor (16), with at least a gyrating mass (17) respectively arranged on the roof and the floor. The device (1) also has at least one mechanical coupling means, wherein the gyrating masses are coupled to one another by the mechanical coupling means (21) arranged outside the inner space and can be driven. The device (1) has a drive means for driving the mechanical coupling means. The method also comprises the step of setting the housing (10) in an oscillating motion by means of driving the gyrating masses. In a further method step, the fractionating of the bulk material is performed by means of the screen. Subsequently, a discharge of at least one of the fractions of the bulk material from the housing takes place through the outlet.
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