In-feed device (1) for feeding objects onto a grading apparatus (13) for grading sensitive products. The in-feed device (1) comprises a new type of sliding plates (4, 5) and vibrating motors (7) to arrange the objects and to rinse small particles from the objects to be graded.

In-feed device (1) for feeding objects onto a grading apparatus (13) for grading sensitive products. The in-feed device (1) comprises a new type of sliding plates (4, 5) and vibrating motors (7) to arrange the objects and to rinse small particles from the objects to be graded.

The present invention provides a combination screening apparatus for screening a mixed material into three graded streams, comprising a disc screen wholly, substantially or partly located within a rotary drum screen. The present invention may be conveniently arranged on a mobile chassis with a simple arrangement of a feed hopper to feed a feed end, and a layered or stacked configuration for the discharge of the so-formed graded streams at a discharge end.

The present invention provides a combination screening apparatus for screening a mixed material into three graded streams, comprising a disc screen wholly, substantially or partly located within a rotary drum screen. The present invention may be conveniently arranged on a mobile chassis with a simple arrangement of a feed hopper to feed a feed end, and a layered or stacked configuration for the discharge of the so-formed graded streams at a discharge end.

A novel separation screen, a separation apparatus utilizing the separation screen, and a method for product separation are disclosed herein. The separation apparatus includes a housing defining a separation chamber having an inlet and a plurality of outlet orifices. A separation screen, which is located within the separation chamber, has a plurality of openings having fixed, non-uniform sizes. The separation apparatus also includes an adjustable feed placement device located upstream from the separation screen to direct a feed stream to a selected region of the separation screen to achieve a desired size distribution in each of the product streams.

A novel separation screen, a separation apparatus utilizing the separation screen, and a method for product separation are disclosed herein. The separation apparatus includes a housing defining a separation chamber having an inlet and a plurality of outlet orifices. A separation screen, which is located within the separation chamber, has a plurality of openings having fixed, non-uniform sizes. The separation apparatus also includes an adjustable feed placement device located upstream from the separation screen to direct a feed stream to a selected region of the separation screen to achieve a desired size distribution in each of the product streams.

The invention relates to a device for continuously sorting a particulate stream, comprising: a) a conveyor (1) for conveying the particulate stream to a separation device, b) a sieve (7) for separating the particulate stream according to size, characterized in that it further comprises c) a per-sieve (3) comprising elongated sieve openings located between the convey or outlet and the sieve d) and a mechanical impact device for providing mechanical impacts to the pre-sieve (3). The pre-sieve allows to separate elongated objects like threads or wires form the particulate stream which would otherwise clog or block subsequent separation devices including the sieve.

The invention relates to a device for continuously sorting a particulate stream, comprising: a) a conveyor (1) for conveying the particulate stream to a separation device, b) a sieve (7) for separating the particulate stream according to size, characterized in that it further comprises c) a per-sieve (3) comprising elongated sieve openings located between the convey or outlet and the sieve d) and a mechanical impact device for providing mechanical impacts to the pre-sieve (3). The pre-sieve allows to separate elongated objects like threads or wires form the particulate stream which would otherwise clog or block subsequent separation devices including the sieve.

A separating apparatus for polysilicon has at least one screen plate, comprising a feed region for polysilicon, a profiled region having peaks and valleys, a region having screen apertures which adjoins the profiled region, and a takeoff region, wherein the screen apertures widen in the direction of the takeoff region, and a separating plate which is horizontally and vertically displaceable is arranged below the screen apertures.

A separating apparatus for polysilicon has at least one screen plate, comprising a feed region for polysilicon, a profiled region having peaks and valleys, a region having screen apertures which adjoins the profiled region, and a takeoff region, wherein the screen apertures widen in the direction of the takeoff region, and a separating plate which is horizontally and vertically displaceable is arranged below the screen apertures.