A powder reclamation system is provided. The powder reclamation system includes a support structure; a filter housing movable relative to the support structure, the filter housing defining an inlet and an outlet; a raw reclaimed powder hopper in communication with the inlet of the filter housing; a first reclamation passageway in communication with the raw reclaimed powder hopper and configured to be in communication with a first metal powder processing device to recover a first unused portion of a first powder from the first metal powder processing device to the raw reclaimed powder hopper; and a second reclamation passageway in communication with the raw reclaimed powder hopper and configured to be in communication with a second metal powder processing device to recover a second unused portion of a second powder from the second metal powder processing device to the raw reclaimed powder hopper.

A powder reclamation system is provided. The powder reclamation system includes a support structure; a filter housing movable relative to the support structure, the filter housing defining an inlet and an outlet; a raw reclaimed powder hopper in communication with the inlet of the filter housing; a first reclamation passageway in communication with the raw reclaimed powder hopper and configured to be in communication with a first metal powder processing device to recover a first unused portion of a first powder from the first metal powder processing device to the raw reclaimed powder hopper; and a second reclamation passageway in communication with the raw reclaimed powder hopper and configured to be in communication with a second metal powder processing device to recover a second unused portion of a second powder from the second metal powder processing device to the raw reclaimed powder hopper.

A method for the classification of superabsorber particles is disclosed, in which the superabsorber particles are put onto a top screen deck of a screening machine having at least two screen decks with a different hole size, the superabsorber particles which are smaller than the holes of the respective screen deck respectively falling through the holes and the superabsorber particles remaining on the screen deck being removed via an extraction point. Balls are positioned on each perforated plate, which balls are propelled upward by the movement of the perforated plate and strike from below the screen deck respectively lying above, wherein the balls have a stiffness in the range from 40 to 100 N/mm and a damping in the range from 1 to 4%. A machine for carrying out the method also is disclosed.

A method for the classification of superabsorber particles is disclosed, in which the superabsorber particles are put onto a top screen deck of a screening machine having at least two screen decks with a different hole size, the superabsorber particles which are smaller than the holes of the respective screen deck respectively falling through the holes and the superabsorber particles remaining on the screen deck being removed via an extraction point. Balls are positioned on each perforated plate, which balls are propelled upward by the movement of the perforated plate and strike from below the screen deck respectively lying above, wherein the balls have a stiffness in the range from 40 to 100 N/mm and a damping in the range from 1 to 4%. A machine for carrying out the method also is disclosed.

A powder reclamation system is provided. The powder reclamation system includes a support structure; a filter housing movable relative to the support structure, the filter housing defining an inlet and an outlet; a raw reclaimed powder hopper in communication with the inlet of the filter housing; a first reclamation passageway in communication with the raw reclaimed powder hopper and configured to be in communication with a first metal powder processing device to recover a first unused portion of a first powder from the first metal powder processing device to the raw reclaimed powder hopper; and a second reclamation passageway in communication with the raw reclaimed powder hopper and configured to be in communication with a second metal powder processing device to recover a second unused portion of a second powder from the second metal powder processing device to the raw reclaimed powder hopper.

A powder reclamation system is provided. The powder reclamation system includes a support structure; a filter housing movable relative to the support structure, the filter housing defining an inlet and an outlet; a raw reclaimed powder hopper in communication with the inlet of the filter housing; a first reclamation passageway in communication with the raw reclaimed powder hopper and configured to be in communication with a first metal powder processing device to recover a first unused portion of a first powder from the first metal powder processing device to the raw reclaimed powder hopper; and a second reclamation passageway in communication with the raw reclaimed powder hopper and configured to be in communication with a second metal powder processing device to recover a second unused portion of a second powder from the second metal powder processing device to the raw reclaimed powder hopper.

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.

Provided is a method for producing a polyacrylic acid (salt)-based water absorbent resin in which the physical properties (especially liquid permeability) are improved and maintained even in large scale production. The method for producing a polyacrylic acid (salt)-based water absorbent resin, which sequentially includes a polymerization step, in which a monomer aqueous solution having acrylic acid (salt) as a main component is polymerized, a drying step, in which a water-containing gel-like crosslinked polymer obtained in the polymerization step is dried, and a classification step, in which a polymer obtained in the drying step is classified, wherein a rocking-type sieve classification apparatus is used in the classification step, and the rocking-type sieve classification apparatus has a sieve net having a trajectory and a rotation speed in the following ranges; radial gradient R: from 5 to 40 mm, tangential gradient T: from 0.1 to 25 mm, eccentric gradient E: from 40 to 80 mm, and rotation speed F: from 60 to 600 rpm.

Provided is a method for producing a polyacrylic acid (salt)-based water absorbent resin in which the physical properties (especially liquid permeability) are improved and maintained even in large scale production. The method for producing a polyacrylic acid (salt)-based water absorbent resin, which sequentially includes a polymerization step, in which a monomer aqueous solution having acrylic acid (salt) as a main component is polymerized, a drying step, in which a water-containing gel-like crosslinked polymer obtained in the polymerization step is dried, and a classification step, in which a polymer obtained in the drying step is classified, wherein a rocking-type sieve classification apparatus is used in the classification step, and the rocking-type sieve classification apparatus has a sieve net having a trajectory and a rotation speed in the following ranges; radial gradient R: from 5 to 40 mm, tangential gradient T: from 0.1 to 25 mm, eccentric gradient E: from 40 to 80 mm, and rotation speed F: from 60 to 600 rpm.