Polysilicon chunks or granules are classified into size fractions using a mechanical screen having a profiled surface having peaks and valleys, and terminating in widening slots through which a polysilicon size fraction falls. The device is effective and the slots are resistant to clogging.

A cylindrical screening device including a plurality of profile bars, in which a number of ring shaped bar holders are arranged perpendicular to a cylinder axis and spaced apart from one another, or bundles of a number of bar holders spaced apart from one another are provided on the inside or the outside with open-edged recesses. The shape of the recesses correspond in a substantially complementary manner to that of the feet of the profile bars. The profile bars are inserted into the recesses, parallel to one another and parallel to the cylinder axis, wherein an outer bar holder is in each case arranged in the region of a respective face-side end ring of the screening device. The attachment of the end ring is simplified in that the outer bar holder is detachably connected with the end ring.

A cylindrical screening device including a plurality of profile bars, in which a number of ring shaped bar holders are arranged perpendicular to a cylinder axis and spaced apart from one another, or bundles of a number of bar holders spaced apart from one another are provided on the inside or the outside with open-edged recesses. The shape of the recesses correspond in a substantially complementary manner to that of the feet of the profile bars. The profile bars are inserted into the recesses, parallel to one another and parallel to the cylinder axis, wherein an outer bar holder is in each case arranged in the region of a respective face-side end ring of the screening device. The attachment of the end ring is simplified in that the outer bar holder is detachably connected with the end ring.

A screen basket for centrifuges having a wedge wire with a broad end and an opposite narrow end. The wedge wire narrows in width from the broad end to the narrow end and the wedge wire increases in depth from the broad end to the narrow end.

A screen basket for centrifuges having a wedge wire with a broad end and an opposite narrow end. The wedge wire narrows in width from the broad end to the narrow end and the wedge wire increases in depth from the broad end to the narrow end.

Provided is a method for removing wire-form objects, a device for removing wire-form objects, and a method for processing electronic/electrical apparatus component waste, which can efficiently sort wire-form objects from sorting target objects having various shapes. The method for removing wire-form objects includes: arranging a plurality of filters 3 in a vibrating sieve machine 1 such that the filters 3 are adjacent to each other so as to partially overlap with each other in a feed direction of a raw material, each of the filters including a plurality of rods 2 extending at distances in the feed direction and a beam portion 21 for supporting the plurality of rods 2 at one ends 2a of the plurality of rods 2, the other ends 2b of the plurality of rods 2 being free ends; and feeding a raw material containing at least wire-form objects and plate-form objects into the vibrating sieve machine 1; and vibrating the filters 3 to sieve out the wire-form objects toward an under-sieve side of the vibrating sieve machine 1.

Provided is a method for removing wire-form objects, a device for removing wire-form objects, and a method for processing electronic/electrical apparatus component waste, which can efficiently sort wire-form objects from sorting target objects having various shapes. The method for removing wire-form objects includes: arranging a plurality of filters 3 in a vibrating sieve machine 1 such that the filters 3 are adjacent to each other so as to partially overlap with each other in a feed direction of a raw material, each of the filters including a plurality of rods 2 extending at distances in the feed direction and a beam portion 21 for supporting the plurality of rods 2 at one ends 2a of the plurality of rods 2, the other ends 2b of the plurality of rods 2 being free ends; and feeding a raw material containing at least wire-form objects and plate-form objects into the vibrating sieve machine 1; and vibrating the filters 3 to sieve out the wire-form objects toward an under-sieve side of the vibrating sieve machine 1.

A sliding drawer sifter apparatus for sorting plant buds by size includes a frame having a set of drawers comprising a top drawer, a middle drawer, and a bottom draw. Each of the set of drawers has a handle and an inner lip. A set of sifter grates each has a grate perimeter selectively engageable with the inner lip of each of the drawers and a grate body coupled within the grate perimeter. The set of sifter grates comprises a top grate, a middle grate, and a bottom grate. The grate body of the bottom grate is finer than the grate body of the middle grate. The grate body of the middle grate is finer than the grate body of the top grate. The top grate, the middle grate, and the bottom grate are configured to sort progressively smaller plant buds into the set of drawers.

A sliding drawer sifter apparatus for sorting plant buds by size includes a frame having a set of drawers comprising a top drawer, a middle drawer, and a bottom draw. Each of the set of drawers has a handle and an inner lip. A set of sifter grates each has a grate perimeter selectively engageable with the inner lip of each of the drawers and a grate body coupled within the grate perimeter. The set of sifter grates comprises a top grate, a middle grate, and a bottom grate. The grate body of the bottom grate is finer than the grate body of the middle grate. The grate body of the middle grate is finer than the grate body of the top grate. The top grate, the middle grate, and the bottom grate are configured to sort progressively smaller plant buds into the set of drawers.

A nut sorter includes a support frame with a rotatable cage connected thereto. The rotatable cage is comprised of support rings with a plurality of longitudinally extending rods connected thereto. The outer periphery of the longitudinally extending rods extends inwardly into a center space defined by the inner diameter of the support rings. The nut sorter also has a plurality of scrapers utilized to dislodge stuck debris and nuts as the cage rotates under the scrapers.