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WO1997000143A1 - Procede et appareil de recyclage de dechets - Google Patents

Procede et appareil de recyclage de dechets Download PDF

Info

Publication number
WO1997000143A1
WO1997000143A1 PCT/AU1996/000367 AU9600367W WO9700143A1 WO 1997000143 A1 WO1997000143 A1 WO 1997000143A1 AU 9600367 W AU9600367 W AU 9600367W WO 9700143 A1 WO9700143 A1 WO 9700143A1
Authority
WO
WIPO (PCT)
Prior art keywords
waste
recycling process
process according
waste recycling
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/AU1996/000367
Other languages
English (en)
Inventor
Michael Gerard Stephen Walsh
Peter William Holbut
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PETEMIC TECHNOLOGY PTY Ltd
Original Assignee
PETEMIC TECHNOLOGY PTY Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AUPN3594A external-priority patent/AUPN359495A0/en
Application filed by PETEMIC TECHNOLOGY PTY Ltd filed Critical PETEMIC TECHNOLOGY PTY Ltd
Priority to AU59924/96A priority Critical patent/AU5992496A/en
Publication of WO1997000143A1 publication Critical patent/WO1997000143A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/30—Mixed waste; Waste of undefined composition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • THIS INVENTION relates to a waste recycling process and apparatus and in particular but not limited to a waste recycling process and apparatus for producing useful products from domestic garbage.
  • the present invention provides a waste recycling process comprising the steps of:-
  • the present invention also provides an apparatus for waste recycling comprising a waste selection means, a waste reducer for reducing waste delivered thereto from the waste selection means to provide a mass of finely divided particles of predetermined character, a mixer for mixing the finely divided particles with a binder and means for compacting and drying the mixture.
  • the waste selection means can be any suitable means for separating waste that can be recycled by other means.
  • raw waste can include iron based wastes and other recyclables including PTFE bottles and aluminium cans and therefore the waste selection means typically includes an automated magnetic sorting means to eliminate iron based wastes from the raw waste.
  • the waste selection means typically also includes means for removing other recyclables including PTFE bottles and aluminium cans and this typically comprises a manual sort of the raw waste on a conveyor or the like.
  • the waste selection means typically produces waste which is predominantly waste packaging and other solid domestic wastes.
  • the waste reducer typically takes the selected waste and reduces it to a size most suitable for providing an intimate blend between the finely divided particles and the binder. This can typically take place by employing a cutting or shredding process so there is provided a finely divided particulate mass similar to sawdust in character and having a particle size of .5mm to 1 mm.
  • the reducer typically comprises a pulveriser or a number of pulverisers to reduce the particle size in stages, each pulveriser having an associated screen whereby particles that do not pass through the screen are recycled to the pulveriser for reprocessing.
  • the mixing and binding stage typically involves the use of an agitator where any binder, typically a clay based binder which can include cementitious material or other refractory material is added to coat the particles in the mass.
  • binder typically a clay based binder which can include cementitious material or other refractory material is added to coat the particles in the mass.
  • the binder is preferably finely divided clay introduced in dry form in proportion of about 1 part binder to 1 part reduced waste.
  • the means for compacting and drying typically includes a pan palletiser, the palletiser forming an aggregate sized according to demand, the aggregate can be sundried or dried by employing a heat gradient over relatively short time period.
  • the heat gradient involves initial heat applied at a temperature of about 500°C to a final heat applied at a temperature of about 1500°C.
  • the heat gradient is a two or three stage process. In the two stage process an inlet temperature of about 500° C ⁇ 200°C and an outlet temperature of about 1300°C ⁇ 200°C can be employed.
  • a typical three stage heating process firstly at a temperature of around 630°C for a first time period, to a temperature of 1050°C for a second time period and a final drying stage at 1250°C. Subsequently, the pellets are transferred to a recovery stage where they are held at a temperature of about 1 50°C to provide slow cooling. Typically, they are held within the range of 120°C to 180°C for a predetermined time period.
  • the result of this process provides a ceramic-like material that can be used as is or reprocessed by crushing or otherwise for storage purposes and then later used as a road base aggregate, fill, or base for production of moulded or extruded building products.
  • Figures 1 A and 1 B form a flow diagram illustrating a process and apparatus according to the present invention
  • FIGS. 2A and 2B form a block diagram illustrating a control system for the apparatus described in relation to Figure 1 ;
  • Figures 3 to 14 are schematic diagrams illustrating typical apparatus according to a preferred form of the present invention.
  • the apparatus and process involves basically four elements, firstly the waste selection means shown generally at 10, this is followed by the waste reducing means shown generally at 1 1 , a mixer and binder stage shown generally at 12 and a compacting and heating stage shown generally at 13.
  • the waste selection means typically involves the use of a weighbridge where a waste vehicle is weighed prior to emptying its contents into a hopper 1 5.
  • the raw garbage in hopper 15 travels through an initial crusher 24 to iron sorter
  • iron based metal products are magnetically sorted and automatically removed from the raw garbage stream.
  • manual sorting can be undertaken and other recyclable wastes also retrieved.
  • the selected waste then moves onto a first pulveriser 1 7 where the waste is reduced, a screen 18 is used and oversized particles are returned to the pulveriser 17.
  • the particles from the screen 18 are pulverised in a second pulveriser 19 and then screened at 20. Oversized particles are returned to the second pulveriser or to the first pulveriser for further reduction.
  • the weighbridge 21 then receives the finely reduced and screened garbage and this can be in the form of a weighing hopper.
  • the binding and mixing stage 12 includes a binding station 22 and, a mixer 23.
  • finely reduced recycled building rubble including cementitious material and clay is introduced in dry form in proportion of about 1 part of binder to 1 part of the finely divided garbage measured out of the weighbridge at 21 .
  • This dry mixture is then incorporated into the mixer at 23 and at this stage, grey water can be introduced in a proportion of about 10% to 20% by weight where the moisture content is controlled to provide a mixture of generally plastic consistency suitable for the next stage.
  • the compacting and drying phase illustrated at 13 involves the use of a pan palletiser 25 where the mixture is treated to form an aggregate which is then delivered to a revolving tumbler 27 to further separate and initiate drying of the particles before entering kiln 28.
  • the kiln 28 has an inlet temperature of around 630°C and an outlet temperature of 1250°C.
  • the kiln is typically configured with a spiral path conveyor to reduce the length of the kiln and has two or three temperature regions with a central temperature region of about 1 150°C in the three region embodiment.
  • the process according to the present invention involves an initial selection of waste to be processed at 10, a subsequent reduction of the wastes at 1 1 , subsequently mixing a predetermined quantity of the wastes at 12 with a binder and then compacting and drying at 13.
  • FIGS. 2A and 2B illustrate in schematic block diagram the control system for the process and apparatus depicted in Figures 1 A and 1 B.
  • the system includes a main process controller 32 having three workstations 33, 34 and 35 as shown enabling operators to control the apparatus depicted in Figures 1 A and 1 B.
  • Figure 3 illustrates a weighbridge 14.
  • Figure 4 illustrates a garbage hopper 15 and in this case, the garbage hopper communicates with an endless belt conveyor 36 having a manual sort region shown generally at 37 so that PTFE bottles and other recyclables including aluminium cans and so forth can be manually removed from the garbage as it leaves the hopper 15.
  • the conveyor 36 is shown in Figure 5 entering the iron based metal sorter 16 and this magnetic sorter typically involves a rotating periodically energised electromagnetic arrangement to extract iron based materials from the garbage stream onto an exit conveyor 38 whereas the rest of the garbage leaves on a conveyor 39.
  • the conveyor 39 then carries the garbage into the first pulveriser 1 7 which operates in conjunction with the primary screen 18.
  • the pulveriser includes a hammermill type arrangement shown generally at 40 and a return conveyor at 41 . Oversized particles are screened out using the screen 18 and these are returned upstream of the hammermill 40. Particles despatched downstream on conveyor 42, in this case are sized in the range of 1 mm to 2mm, according to the screen 18.
  • the conveyor 46 is in the form of a tubulator or generally curved conveyor and thereby delivers the garbage and binder to a mixer 23 which in this case includes revolving agitator 47 mounted on bearings 48 and 49 which monitors moisture level in the mixture and delivers the mixture out along conveyor 51 as a generally plastic granular material which is then delivered to the pan palletiser 25 along the conveyor 51 .
  • This produces an aggregate which is then despatched onto the revolving tumbler 27 or if the revolving tumbler 27 is omitted directly to the kiln 28.
  • the still plastic material travels along the conveyors 60 or 64 to the kiln 28.
  • the kiln 28 in this embodiment is a three stage kiln having a spiral path that the aggregate follows through where it is subjected to a heat gradient from a low entrance temperature to a high exit temperature.
  • the aggregate is subjected to a temperature of around 630°C, at an intermediate stage 66 a temperature of around 1050°C, and at a final stage at 67, a temperature of around 1250°C is used.
  • the aggregate which exits the kiln on conveyor 68 is hard dried, ceramic-like.
  • the conveyor 68 holds the aggregate at a temperature of 120°C to 180°C until sufficiently cool that it can be discharged along conveyor 69.
  • the path length through the recovery bay and therefore the time in the recovery bay can be controlled using a spiral conveyor as in the case of the kiln 28.
  • the cooled aggregate can be used directly or further reduced in a crusher 30 as shown in Figure 14 where a mill 70 dispenses the crushed material onto a conveyor 71 where it can be delivered to storage bays for later use as aggregate or in the construction of other building materials.
  • the heating can be in the two stage kiln typically at 350°C - 650°C in the first stage and 900°C-1200°C in the second stage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un procédé et un appareil de recyclage de déchets. Ce procédé comprend quatre éléments, à savoir, un moyen (10) de sélection des déchets, suivi d'un moyen (11) de réduction des déchets, et d'un moyen (12) de mélange et d'addition de liant et enfin, d'un moyen de compactage et de chauffage (13).
PCT/AU1996/000367 1995-06-19 1996-06-19 Procede et appareil de recyclage de dechets Ceased WO1997000143A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU59924/96A AU5992496A (en) 1995-06-19 1996-06-19 A waste recycling process and apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPN3594A AUPN359495A0 (en) 1995-06-19 1995-06-19 A waste recycling process and apparatus
AUPN3594 1995-06-19
AU34211/95A AU667659B3 (en) 1995-06-19 1995-10-12 A waste recycling process and apparatus
AU34211/95 1995-10-12

Publications (1)

Publication Number Publication Date
WO1997000143A1 true WO1997000143A1 (fr) 1997-01-03

Family

ID=25622772

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1996/000367 Ceased WO1997000143A1 (fr) 1995-06-19 1996-06-19 Procede et appareil de recyclage de dechets

Country Status (2)

Country Link
AU (1) AU667659B3 (fr)
WO (1) WO1997000143A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999058261A1 (fr) * 1998-05-11 1999-11-18 Concha Estrada Ernesto De Melange ecologique pour le secteur de la construction et procede d'elimination des dechets
RU2155108C1 (ru) * 2000-02-07 2000-08-27 Агибалов Алексей Алексеевич Способ переработки твердых бытовых отходов и устройство для его осуществления
WO2005122707A3 (fr) * 2004-05-24 2006-06-15 Moreno Victor Padilla Procede de preparation de masse ecologique apte a la creation d'articles presses perfiles dont la matiere premiere est composee de dechets urbains et industriels organiques et inorganiques, lesquels sont aptes a la construction
RU2277984C2 (ru) * 2004-08-16 2006-06-20 Михаил Леонидович Кузнецов Способ сортировки твердых отходов производства и потребления и комплекс для его осуществления
RU2381843C2 (ru) * 2008-02-11 2010-02-20 Василий Николаевич Цыганов Комплекс для сортировки твердых бытовых отходов (варианты)
RU2537949C1 (ru) * 2013-07-05 2015-01-10 Дмитрий Алексеевич Подсобляев Линия сортировки твердых отходов

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202525A (en) * 1987-03-19 1988-09-28 Catrel Sa Manufacturing granular building material from refuse
AU583635B2 (en) * 1985-06-19 1989-05-04 Loma Finance Inc. Method for transforming organic and mineral waste into solid,inert and water-insoluble materials
CH681432A5 (en) * 1991-01-12 1993-03-31 Michel Jaquet Low-cost treatment of household solid waste - by crushing, combining with resin and pressing into sheets or blocks of prim. material
EP0588023A1 (fr) * 1992-09-17 1994-03-23 EVD ENTWICKLUNGSGESELLSCHAT FÜR VERBUNDMATERIAL DIEZ mbH Procédé pour la préparation d'un objet de particules composites et objet ainsi obtenu

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH673454A5 (fr) * 1987-11-02 1990-03-15 Catrel Sa
GB2254322A (en) * 1991-04-02 1992-10-07 Maddox Derek A method of producing a building material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU583635B2 (en) * 1985-06-19 1989-05-04 Loma Finance Inc. Method for transforming organic and mineral waste into solid,inert and water-insoluble materials
GB2202525A (en) * 1987-03-19 1988-09-28 Catrel Sa Manufacturing granular building material from refuse
CH681432A5 (en) * 1991-01-12 1993-03-31 Michel Jaquet Low-cost treatment of household solid waste - by crushing, combining with resin and pressing into sheets or blocks of prim. material
EP0588023A1 (fr) * 1992-09-17 1994-03-23 EVD ENTWICKLUNGSGESELLSCHAT FÜR VERBUNDMATERIAL DIEZ mbH Procédé pour la préparation d'un objet de particules composites et objet ainsi obtenu

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999058261A1 (fr) * 1998-05-11 1999-11-18 Concha Estrada Ernesto De Melange ecologique pour le secteur de la construction et procede d'elimination des dechets
RU2155108C1 (ru) * 2000-02-07 2000-08-27 Агибалов Алексей Алексеевич Способ переработки твердых бытовых отходов и устройство для его осуществления
WO2005122707A3 (fr) * 2004-05-24 2006-06-15 Moreno Victor Padilla Procede de preparation de masse ecologique apte a la creation d'articles presses perfiles dont la matiere premiere est composee de dechets urbains et industriels organiques et inorganiques, lesquels sont aptes a la construction
RU2277984C2 (ru) * 2004-08-16 2006-06-20 Михаил Леонидович Кузнецов Способ сортировки твердых отходов производства и потребления и комплекс для его осуществления
RU2381843C2 (ru) * 2008-02-11 2010-02-20 Василий Николаевич Цыганов Комплекс для сортировки твердых бытовых отходов (варианты)
RU2537949C1 (ru) * 2013-07-05 2015-01-10 Дмитрий Алексеевич Подсобляев Линия сортировки твердых отходов

Also Published As

Publication number Publication date
AU667659B3 (en) 1996-03-28

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