US 11,577,288 B2Granted

Shredder dust processing method and processing device for same

AssigneeENVITECH ENGINEERING Co., LTD.

InventorsKozo Murata, Toshiro Miyake

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Abstract

A shredder dust treatment method is provided wherein non-metal dust which is further pulverized into a small particle size in a pulverizing step S10 through a crushing step S1 of crushing wastes such as waste automobiles, waste home appliances, and waste office furniture into a predetermined size, an iron component separation and collection step S3 of separating and collecting an iron component, a non-ferrous component separation and collection step S4 of separating and collecting a non-ferrous component, a metal component separation and collection step S5 of sorting a metal component, wind power sorting steps S2, S6, S8, and S9 of sorting floating fibrous dust and a settled crushed material by wind power, and a shredding step S7 of shredding the settled crushed material into a predetermined size is separated into metal scraps such as copper, aluminum, and iron, fibrous dust, and particulate dust in a separating step S11.

Claims16

Dependent claims

A shredder dust treatment method of further collecting metal scraps from a residue (shredder dust) in which valuable materials are separated from a material obtained by crushing wastes and processing a remaining residue into a useful industrial material, comprising:

a crushing step (S1) of crushing the wastes into a predetermined size;
a primary dust collecting step (S2) of collecting fibrous dust separated by the crushing step (S1);
an iron component separation and collection step (S3) of separating and collecting a magnetic material containing an iron component in a crushed material obtained by the crushing step (S1);
a non-ferrous component separation and collection step (S4) of using a homopolar magnet to separate and collect a non-ferrous component which is not picked up by a magnetic force and is contained in the crushed material separated by the iron component separation and collection step (S3);
a step (S5) of separating and collecting stainless steel which is not separated by the non-ferrous component separation and collection step (S4) and is discharged while being contained in non-metal by the combination of a metal detector and an air jet nozzle of ejecting jet air;
a wind power sorting step (S6) of sorting the crushed material separated by the metal component separation and collection step (S5) into lightly floating fibrous dust and a settled crushed material;
a shredding step (S7) of shredding particulate dust separated by settling in the wind power sorting step (S6) into a predetermined size;
a secondary dust collecting step (S8) of collecting the fibrous dust generated by the shredding step (S7);
a stirring step (S9) of separating the fibrous dust and the particulate dust shredded and crushed by the shredding step (S7) while tapping the dust in a metering feeder by a stirring blade;
and
a fibrous dust/particulate dust separation step (S11) of separating the crushed material shredded by the shredding step (S7) into fibrous dust and particulate dust,
wherein the fibrous dust generated when being separated by each of the crushing step (S1), the primary dust collecting step (S2), the non-ferrous component separation and collection step (S4), the wind power sorting step (S6), the secondary dust collecting step (S8), the stirring step (S9), and the fibrous dust/particulate dust separation step (S11) is collected, and
wherein the particulate dust separated by the fibrous dust/particulate dust separation step (S11) is collected.

10 more elements

A shredder dust treatment device for sorting metal, non-ferrous metal, and non-metal from shredder dust obtained by crushing wastes and collecting a valuable material, comprising:

a crusher (10) which crushes the wastes into a predetermined size;
a first vibration type dust collector (20A) which separates fibrous dust from a crushed material crushed by the crusher (10);
an iron component separation and collection device (30, 40) which separates and collects an iron component from the crushed material from which the fibrous dust is separated by the first vibration type dust collector (20A);
a non-ferrous component separation and collection device (50) which separates and collects a non-ferrous component of the crushed material separated by the iron component separation and collection device (30, 40);
a metal detector attachment sorter (60) which sorts metal components mainly including as stainless steel and wire harness in the crushed material separated by the non-ferrous component separation and collection device (50) by using air jet ejected from a nozzle;
a wind power sorting device (70) which sorts the crushed material sorted by the metal detector attachment sorter (60) into floating fibrous dust and a settled crushed material by using wind power;
a shredding machine (80) which shreds the crushed material separated by settling in the wind power sorting device (70) into a particle size of 8 mm or less;
a second vibration type dust collector (20B) which separates particulate dust and fibrous dust containing a large amount of copper wire or polyvinyl 1 chloride from the crushed material shredded into a predetermined size by the shredding machine (80);
and
a metering feeder (90) which separates fibrous dust from particulate dust of the crushed material from which a copper component is separated by the second vibration type dust collector (20B),
wherein the first vibration type dust collector (20A) or/and the second vibration type dust collector (20B) includes:
a supply port (201) which supplies a crushed material pulverized by the crusher (10),
a suction pipeline (202) which is disposed toward a top of the supply port (201),
a disturbing member (203) which is provided in the course of the suction pipeline (202) to disturb the suction of the crushed material other than fibrous dust,
a zigzag pipeline (204) which is disposed toward a bottom of the supply port (201) and includes a plurality of bends in a pipeline, and
vibration generation means (205) for vibrating the entire device.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/652,940Filed 22 Mar 2018
Priority: JP JP2018-04855215 Mar 2018
Published: US 2020/0261952 A120 Aug 2020
Granted: 14 Feb 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification24 codes

B09B 3/35
Involving mechanical treatment: shredding, crushing or cutting
B07B 4/02
Separating solids from solids by subjecting their mixture to gas currents: while the mixtures fall
B07B 4/04
While the mixtures fall: in cascades
B07B 9/00
Combinations of apparatus for screening or sifting or for separating solids from