Process and installation for recovering valuable materials, in particular from waste material on building sites

• US 5,333,738 A
• Filed: 10/04/1991
• Issued: 08/02/1994
• Est. Priority Date: 02/04/1989
• Status: Expired due to Fees

• Current Assignee: Maschinenfabrik Bezner GmbH & Company KG
• Original Assignee: Maschinenfabrik Bezner GmbH & Company KG
• Inventors: Strohhacker, Peter, Fuchs, Dieter
• Primary Examiner(s): Dayoan, D. Glenn
• Assistant Examiner(s): Nguyen, Tuan N.
• Application Number:
  US07/741,468
• Time in Patent Office: 1,033 Days
• Field of Search: 209/12, 209/38, 209/44.1, 209/234, 209/259, 209/313, 209/420, 209/421, 209/629, 209/630, 209/632-636, 209/930, 209/702, 209/933, 209/935, 209/314, 209/692, 209/707
• US Class Current: 209/38
• CPC Class Codes: B03B 9/065 the refuse being building rubble
• CPC Class Codes: B07B 9/00 Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
• CPC Class Codes: Y02W 30/58 Construction or demolition [C&D] waste
• CPC Class Codes: Y10S 209/925 Driven or fluid conveyor moving item from separating station
• CPC Class Codes: Y10S 209/93 Municipal solid waste sorting
• CPC Class Codes: Y10S 209/931 Materials of construction
• CPC Class Codes: Y10S 209/933 Accumulation receiving separated items
• CPC Class Codes: Y10S 209/935 Ambulant

Abstract

A method is proposed for recovering valuable substances, particularly from construction site wastes and industrial trash as well as a system for implementing the method in which the essential sorters are disposed in a closed container which can be placed onto an elevated foundation. The foundation is formed by intersecting walls which simultaneously serve as partitions for various bunkers.

Claims

1. Method of recovering valuable materials from construction site wastes or industrial trash, comprising the steps of:

prescreening a waste and valuable substance mixture using a coarse screening device, said coarse screening device removing large items over a predetermined size from the substance mixture;

feeding the substance mixture by way of an ascending conveyor into an elevated, transportable container, said container resting on a transportable foundation of at least two vertically intersecting walls forming at least four chambers underneath said container;

arranging one of the at least two vertically intersecting walls in a longitudinal direction extending in the direction of the feed of the substance mixture, and arranging the other of the at least two vertically intersecting walls in a latitudinal direction, wherein at least two of said chambers are located on each side of the longitudinally arranged wall and at least two of said chambers are located on each side of the latitudinally arranged wall;

separating the valuable substances from the waste within said container using at least one sorting device including a screening machine equipped with plural screens arranged sequentially in the direction of the feed of the substance mixture, each said screen separating by size a fraction of the substance mixture;

throwing each said fraction into a respective chamber for temporary storage;

feeding the remaining substance mixture to a subsequent processing station; and

recovering the valuable substances from said chambers for subsequent recycling.

2. Method for recovering valuable materials from construction site wastes or industrial trash, comprising the steps of:

feeding a waste and valuable substance mixture by way of an ascending conveyor into an elevated, transportable container resting on a transportable foundation of vertical walls forming a plurality of chambers underneath said container;

separating the valuable substance into a plurality of fractions within said container using at least one sorting device including a sloping sorter, said sloping sorter having a sloped conveying device being tilted transversely to and ascending in the direction of the feed of the substance mixture and being caused to vibrate, said sloping sorter further including a retaining curtain arranged obliquely on said sloped conveying device whereby flat and light weight materials remain on said sloped conveying device to be fed as a fraction into a chamber, and rounded and heavy materials slide down said sloped conveying device in a direction of the tilt through said retaining curtain to be fed to a supplemental conveyor belt extending parallel to said sloped conveying device for further processing;

separating interfering and remaining materials from the substance mixture using a manual sorting station, said manual sorting station being located within the container in an area separate from the sorting device; and

recovering the valuable substances form said chambers for subsequent recycling.

3. Method according to claim 2 wherein the separating step includes providing the container with at least one of an air-conditioning system and a dust removal system.

4. Method according to claim 2 wherein the feeding step includes providing an end of the ascending conveyor with a magnetic tape drum for separating magnetic components from the substance mixture.

5. Method for recovering valuable materials from construction site wastes or industrial trash, comprising the steps of:

prescreening a waste and valuable substance mixture using a coarse screening device;

feeding the prescreened substance mixture by way of an ascending conveyor at a constant speed into an elevated, transportable container resting on a transportable foundation of vertical walls forming a plurality of chambers underneath said container;

separating the prescreeend substance mixture into fractions using plural sorting devices including a screening machine and a sloping sorter, said screening machine being for separating and retaining material by predetermined size, the material larger than said predetermined size traveling to the sloping sorter, said sloping sorter having a sloped conveying device being tilted transversely to and ascending in the direction of the feed of the substance mixture and being caused to vibrate, said sloping sorter further including a retaining curtain arranged obliquely on said sloped conveying device whereby flat and light weight materials remain on said sloped conveying device to be fed as a fraction into a chamber, and rounded and heavy materials slide down said sloped conveying device in a direction of the tilt through said retaining curtain to be fed to a supplemental conveyor belt extending parallel to said sloped conveying device for processing using a manual sortion station.

6. Method according to claim 5, wherein the separating step includes providing the container with an air-conditioning system from the removal of dust.

7. Method according to claim 5, wherein the feeding step includes providing an end of the ascending conveyor with a magnetic tape drum for separating magnetic components from the substance mixture.

8. A system for separating valuable materials from construction site wastes or industrial trash, comprising:

a prescreening device having a course mesh for prescreening out large items over a predetermined size from a substance mixture;

an ascending conveyor for transporting the substance mixture from said prescreening device;

an elevated sorting device for receiving the substance mixture from said ascending conveyor, said sorting device including a screening machine having plural screens arranged sequentially in the direction of the feed of the substance mixture, each said screen separating by size a fraction of the substance mixture, the remaining substance mixture being fed to a subsequent processing station;

a transportable foundation having one vertical longitudinally arranged wall extending in the direction of the feed of the substance mixture and at least one vertical latitudinally arranged wall, said walls intersecting to form at least four chambers underneath said sorting device, at least two of said chambers being located on each side of said longitudinally arranged wall and at least two of said chambers being located on each side of said latitudinally arranged wall, said sorting device being disposed on said transportable foundation, each said fraction being subsequently thrown into a respective chamber for temporary storage and later recovery; and

a transportable, closed container for housing said elevated sorting device.

9. A system according to claim 8, wherein the container is provided with at least one of an air-conditioning system and a dust removal system.

10. A system according to claim 8, and further comprising a magnetic tape drum for separating magnetic components from the substance mixture at an end of the ascending conveyor.

11. A system for separating valuable materials from construction site wastes or industrial trash, comprising:

a prescreening device having a course mesh for prescreening out large items over a predetermined size from a substance mixture;

an ascending conveyor for transporting the substance mixture from said prescreening device;

an elevated sorting device for receiving the substance mixture from said ascending conveyor, said sorting device including a screening machine and a sloping sorter, said screening machine having plural screens arranged sequentially in the direction of the feed of the substance mixture, each said screen separating by size a fraction of the substance mixture, the remaining substance mixture being fed to a subsequent processing station, said sloping sorter having a sloped conveying device being tilted transversely to and ascending in the direction of the feed of the substance mixture, said sloping sorter further comprising vibrating means for vibrating said sloped conveying device, a retaining curtain arranged obliquely on said sloped conveying device whereby flat and light weight materials remain on said sloped conveying device to be fed as a fraction into a chamber, and rounded and heavy materials slide down said sloped conveying device in a direction of the tilt through said retaining curtain, and a supplemental conveyor belt extending parallel to said sloped conveying device for transporting the rounded and heavy materials for further processing;

a transportable foundation having at least two vertically intersecting walls forming at least four chambers underneath said sorting device, said sorting device being disposed on said transportable foundation, each said fraction being subsequently thrown into a respective chamber for temporary storage and later recovery; and

a transportable, closed container for housing said elevated sorting device.

12. A system according to claim 11, wherein the container is provided with an air-conditioning system for the removal of dust.

13. A system according to claim 11, wherein an end of the ascending conveyor is provided with a magnetic tape drum for separating magnetic components from the substance mixture.

14. A system for separating valuable materials from construction site wastes or industrial trash, comprising:

a prescreening device having a course mesh for prescreening out large items over a predetermined size from a substance mixture;

an ascending conveyor for transporting the substance mixture from said prescreening device;

an elevated sorting device for receiving the substance mixture from said ascending conveyor, said sorting device including a screening machine having plural screens arranged sequentially in the direction of the feed of the substance mixture, each said screen separating by size a fraction of the substance mixture, the remaining substance mixture being fed to a subsequent processing station;

a transportable foundation having at least two vertically intersecting walls forming at least four chambers underneath said sorting device, said sorting device being disposed on said transportable foundation, each said fraction being subsequently thrown into a respective chamber for temporary storage and later recovery; and

a transportable, closed container for housing said elevated sorting device, said container including a manual sorting station for separating interfering and residual substances from the substance mixture, said manual sorting station being located within the container in an area separate from the sorting device.

15. A system according to claim 14, wherein the container is provided with an air-conditioning system for the removal of dust.

16. A system according to claim 14, wherein an end of the ascending conveyor is provided with a magnetic tape drum for separating magnetic components from the substance mixture.

17. A system for separating valuable materials from construction site wastes or industrial trash, comprising:

a prescreening device having a course mesh for prescreening out large items over a predetermined size from a substance mixture;

an ascending conveyor for transporting the substance mixture from said prescreening device;

an elevated sorting device for receiving the substance mixture from said ascending conveyor, said sorting device including a screening machine followed by a sloping sorter and a manual sorting station, respectively, whereby the screening machine, said sloping sorter and said manual sorting station are arranged relative to the direction of the feed of the substance mixture, and wherein said screening machine has plural screens arranged sequentially in the direction of the feed of the substance mixture, each said screen separating by size a fraction of the substance mixture, the remaining substance mixture being fed to a subsequent processing station;

a transportable foundation having at least two vertically intersecting walls forming at least four chambers underneath said sorting device, said sorting device being disposed on said transportable foundation, each said fraction being subsequently thrown into a respective chamber for temporary storage and later recovery; and

a transportable, closed container for housing said elevated sorting device.

18. A system for separating valuable materials from construction site wastes or industrial trash, comprising:

a prescreening device having a course mesh for prescreening out large items over a predetermined size from a substance mixture;

an ascending plate belt conveyor for transporting the substance mixture from said prescreening device, said ascending conveyor having iron plates and being disassemblable for transporting purposes;

enclosure means for encapsulating the ascending conveyor against moisture and the emission of noise and dust;

a magnetic tape drum for separating magnetic components from the substance mixture at an upper end of the ascending conveyor;

an elevated sorting device from receiving the substance mixture from said ascending conveyor, said sorting device including a screening screening machine having plural screens arranged sequentially in the direction of the feed of the substance mixture, each said screen separating by size a fraction of the substance mixture, the remaining substance mixture being fed to a subsequent processing station;

a transportable foundation having at least two vertically intersecting walls forming at least four chambers underneath said sorting device, said sorting device being disposed on said transportable foundation, each said fraction being subsequently thrown into a respective chamber for temporary storage and later recovery; and

a transportable, closed container for housing said elevated sorting device.

19. A system for separating valuable materials from construction site wastes or industrial trash, comprising:

a prescreening device having a course mesh for prescreening out large items over a predetermined size from a substance mixture;

an ascending conveyor for transporting the substance mixture from said prescreening device;

a transportable container for receiving the substance mixture from said ascending conveyor, said container having plural sorting devices for separating the valuable substances into several fractions, said sorting devices including a screening machine having plural screens arranged sequentially in the direction of the feed of the substance mixture, and a sloping sorter for separating flat and three-dimensional materials, said screening machine and said sloping sorter being arranged in the direction of the feed, respectively;

a transportable foundation having at least tow vertically intersecting walls forming plural chambers, said container being disposed on said transportable foundation;

a supplemental conveyor for transporting the three-dimensional materials for further processing; and

a manual sorting station for sorting the three-dimensional materials, said manual sorting station being located within said container in an area separate from said sorting devices.

20. A system according to claim 19, wherein the ascending conveyor is a plate belt conveyor having iron plates and being disassemblable for transporting purposes, and further comprising enclosure means for encapsulating the ascending conveyor against moisture and the emission of noise and dust, and a magnetic tape drum for separating magnetic components from the substance mixture at an upper end of the ascending conveyor.