EP0220853A2 - Anlage zur Wiedergewinnung verwertbarer Eisen- und Nichteisenmetallkomponenten aus verbrannten Abfällen - Google Patents

Anlage zur Wiedergewinnung verwertbarer Eisen- und Nichteisenmetallkomponenten aus verbrannten Abfällen Download PDF

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Publication number
EP0220853A2
EP0220853A2 EP86307640A EP86307640A EP0220853A2 EP 0220853 A2 EP0220853 A2 EP 0220853A2 EP 86307640 A EP86307640 A EP 86307640A EP 86307640 A EP86307640 A EP 86307640A EP 0220853 A2 EP0220853 A2 EP 0220853A2
Authority
EP
European Patent Office
Prior art keywords
ferrous
metal components
ferrous metal
carbonaceous
comminuting
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.)
Granted
Application number
EP86307640A
Other languages
English (en)
French (fr)
Other versions
EP0220853A3 (en
EP0220853B1 (de
Inventor
Samuel Keller
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.)
Shaneway Inc
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Shaneway Inc
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Filing date
Publication date
Application filed by Shaneway Inc filed Critical Shaneway Inc
Publication of EP0220853A2 publication Critical patent/EP0220853A2/de
Publication of EP0220853A3 publication Critical patent/EP0220853A3/en
Application granted granted Critical
Publication of EP0220853B1 publication Critical patent/EP0220853B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
    • B02C4/12—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member in the form of a plate
    • 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
    • B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets

Definitions

  • the present invention relates in general to a system and method for recovery of salvageable materials from refuse, and specifically to a system and method for the recovery of ferrous and non-ferrous metal components from incinerated waste materials,
  • the present invention further relates to a crusher for selectively comminuting friable material without comminuting associated malleable material.
  • the quality of the recovered ferrous and non- ferrous products varies widely due to the incinerated waste product carryover, the extreme variability of the moisture content in both the waste material and the residue ash, and the fused aggregate of carbonaceous incinerated byproducts.
  • ferrous and non-ferrous metal such as aluminum
  • components from friable, incinerated waste materials, including carbonaceous incineration byproducts, such as ash, and associated ferrous and non-ferrous metal components.
  • Such a system will not only permit the recovery of the salvageable ferrous and non-ferrous metal components from the incinerated waste material, but also will reduce the amount of the incineration byproduct, e . g ., ash, that must be disposed by conventional disposal such as landfill.
  • the present invention pertains to a system for recovering salvageable ferrous and non-ferrous materials from incinerated waste materials including friable, carbonaceous incineration byproducts such as ash, and associated ferrous metal and aluminum and other non-­ferrous metal components
  • first crushing means for selectively comminuting carbonaceous incineration byproducts without comminuting associated ferrous and non-­ferrous metal components
  • first separating means coacting with said first crushing means for selectively separating comminuted carbonaceous incineration byproducts from ferrous and non-ferrous metal components
  • first magnetic means for separating ferrous metal components from non-ferrous metal components.
  • the system further comprises first conveying means for conveying incinerated waste materials to the first selective crushing means and collection stations for collecting separated comminuted carbonaceous incineration byproducts, ferrous metal components and non-ferrous metal components.
  • the system further comprises second crushing means for further selectively comminuting carbonaceous incineration byproducts without comminuting associated ferrous and non-­ferrous metal components; second separating means coacting with the second crushing means for selectively separating additional comminuted carbonaceous incineration byproducts from ferrous and non-ferrous metal components; second conveying means for conveying comminuted carbonaceous incineration byproducts and ferrous and non-ferrous metal components to the second separating means; third conveying means for conveying ferrous and non-ferrous metal components to said first magnetic means; and second magnetic means for separating ferrous metal components from non-ferrous metal components prior to said first crushing means.
  • system further comprises third separating means prior to said first crushing means to separate noncarbonaceous materials other than ferrous and non-ferrous metal components, such as glass, sand and dirt, from the incinerated waste materials and fourth conveying means for conveying unseparated carbonaceous byproducts and ferrous and non-­ferrous metal components from the first separating means to the second selective crushing means.
  • third separating means prior to said first crushing means to separate noncarbonaceous materials other than ferrous and non-ferrous metal components, such as glass, sand and dirt, from the incinerated waste materials
  • fourth conveying means for conveying unseparated carbonaceous byproducts and ferrous and non-­ferrous metal components from the first separating means to the second selective crushing means.
  • the present invention further relates to a method for recovery of ferrous and non-ferrous metal components from incinerated waste materials using the system of the present invention and to a novel crusher for selectively comminuting friable materials without comminuting associated malleable materials.
  • the present invention is directed to a system for recovering salvageable ferrous and non-ferrous materials from incinerated waste materials including friable carbonaceous incineration byproducts such as ash, and associated ferrous metal and aluminum and other non-­ferrous metal components
  • first crushing means for selectively comminuting carbonaceous incineration byproducts without comminuting associated ferrous and non-­ferrous metal components
  • first separating means coacting with said first crushing means for separating comminuted carbonaceous incineration byproducts from ferrous and non-­ferrous metal components
  • first magnetic means for separating ferrous metal components from non-ferrous metal components.
  • the feed material processed in the recovery system generally consists of the bottoms or ash material remaining after incineration of waste materials, and preferably the bottoms or ash produced in a furnace in a mass burning operation used to generate electricity.
  • the bottoms product generally includes incinerated carbonaceous byproducts, such as ash, and associated incinerated ferrous and non- ferrous metal components such as aluminum, copper, nickel and brass.
  • the bottoms product may also include glass and other refuse typically contained in municipal refuse that are not completely incinerated at the temperature maintained in the furnace.
  • incinerated waste materials are the preferred feed stock of the invention, other feed materials, including ash and ash-related products and non-ferrous and/or ferrous metal components, are also suitable.
  • the feed material is delivered to a first crushing means 4 in the recovery system of the invention preferably by a first conveying means 3.
  • the first conveying means 3 may be a belt- type conveyor at an angle from the horizontal, i.e. , troughing angle, of between preferably about 10 and 45 degrees.
  • the system preferably includes a second conveying means 5 that conveys the comminuted carbonaceous incineration byproducts and ferrous and non-ferrous metal components from the first crushing means 4 to a first separating means 6.
  • the second conveying means 5 may again be a belt-type conveyor or any other conventional conveyor similar to the first conveying means 3.
  • the first separating means 6 which separates comminuted carbonaceous incineration byproducts from ferrous and non-ferrous metal components may be any conventional separator, such as a screen separator, which will separate comminuted carbonaceous byproducts from the associated ferrous and non-ferrous metal components.
  • the second conveying means 5 and first separating means 6 is a combination vibrating screen/conveyor such as sold by Bonded Scale and Machine Co.
  • a variable angle vibrating conveyor/screen separator is used in order to regulate the variable flow of the comminuted carbonaceous byproducts and associated ferrous and non-­ferrous metal components across the screen/conveyor to enhance separation.
  • the screen angle is preferably between about 10 and 45 degrees, and most preferably between about 3 and 20 degrees, from the horizontal, with the exact angle being selected to maximize the retention time of the material on the screen without overloading the screen.
  • the vibrating screen/conveyor has a plurality of openings, preferably between about 3/8 inch and 1 1/2 inch, and most preferably about 3/4 inch, in diameter, through which a portion of the vibrated ash or other carbonaceous incineration byproduct preferably less than about 3/4 inch to 1 inch in diameter passes to a collection station positioned below the vibrating screen/­conveyor.
  • the collection station 12 may be any conventional collector apparatus but preferably is a belt conveyor or another collection device which transports the ash or other carbonaceous incineration byproduct to a further collection station from which it is transported to a landfill for disposal.
  • the first crushing means 4 is a unique crusher which selectively comminutes friable carbonaceous incineration byproducts to a desired particle size without comminuting associated ferrous or non- ferrous metal components.
  • the crusher is preferably a single rotating roll-type crusher 20, such as shown in Figures 2 and 3, having two to six, preferably four, tungsten carbide welds 30 equidistant-spaced longitudinally across the exterior surface of a rotating roll 32 to comminute the carbonaceous incineration byproducts.
  • a generally stationary backing plate 34 In juxtaposition to the roll is a generally stationary backing plate 34.
  • the incinerated waste materials are conveyed to the single rotating roll-type crusher 20 where they are delivered to the rotating roll 32.
  • the rotating roll 32 is set a sufficient distance from the backing plate 34 to comminute the carbonaceous incineration byproducts to a diameter of preferably between about 3/8 to 1 1/2 inches or less, and most preferably 1 inch or less, without comminuting associated ferrous and non-ferrous metal components.
  • the backing plate 34 is maintained in place by coil springs, air pressure cylinders, hydraulic cylinders or other means which serves as a release device, compressing when ferrous or non- ferrous metal components in the incinerated waste materials enter the space between the rotating roll and the backing plate at a pressure sufficient to comminute the carbonaceous incineration byproducts, but insufficient to comminute the associated ferrous and non-ferrous metal components.
  • the backing plate 34 is maintained in place by two spaced-apart air-­pressure controlled rams 36 attached to the base of the backing plate 34.
  • the rams are maintained under an air pressure of preferably 40 ⁇ 10 psi and release and return to place almost instantly when a ferrous or non-ferrous metallic component enters the space between the rotating roll and the backing plate and is passed.
  • the ability to vary the air pressure is desirable in order to be able to comminute the various carbonaceous incineration byproducts encountered from the same or different incineration processes.
  • the ferrous and non-ferrous metal components are separated in the claimed system by first magnetic means 11.
  • the first magnetic means 11 may be used in the system prior or subsequent to the first crushing means 4.
  • the first magnetic means 11 is used in the system subsequent to the first crushing means 4.
  • the first magnetic means 11 may be any type of magnet which will separate the ferrous metal components, such as iron and steel components, from the non-ferrous metal components, such as aluminum.
  • the magnet is a magnetic drum head pulley, such as manufactured by Sterns Magnetics, Inc. or Erie Magnetic, Inc.
  • the ferrous metal components are released from the magnet, and the ferrous and non-ferrous metal components are deposited at one or more collection stations 12.
  • the ferrous metal components are deposited at one collection station and the non- ferrous metal components are deposited at another collection station.
  • the salvaged ferrous and non-ferrous metal components may then be sold for the recovered, specific ferrous and non-ferrous metal values.
  • a second crushing means 8 is similar to the first crushing means 4 in that it further selectively comminutes the carbonaceous incineration byproducts to a diameter of preferably between about 1/4 and 1 1/2 inches or less, and most preferably 1/2 inch or less, without comminuting associated ferrous and non-ferrous metal components.
  • the comminuted ash and associated ferrous and non- ferrous metal components from the second crushing means 8 are conveyed by a third conveying means 10 to the first magnetic means 11 for separation of the ferrous metal components from the non-ferrous metal components, such as aluminum.
  • the third conveying means 10 may be again any conventional conveyor system, such as a belt conveyor.
  • the fourth conveying means 7 conveys carbonaceous incineration byproducts with associated ferrous and non-­ferrous metal components from the first separating means 6 to the second crushing means 8.
  • the fourth conveying means 7 may again be any conventional conveyor system, such as a belt conveyor.
  • the second separating means 9 which separates further comminuted carbonaceous incineration byproducts and associated ferrous and non-ferrous metal components from the second crushing means 8 may again be any conventional separator, such as a screen separator.
  • the third conveying means 10 and second separating means 9 is a combination variable angle vibrating screen/conveyor such as described above for the second conveying means 5 and first separating means 6.
  • the screen angle is preferably between about 10 and 45 degrees, and most preferably between about 13 and 20 degrees, from the horizontal with the exact angle being selected to maximize the retention time of the material on the screen without overloading the screen.
  • the vibrating screen/conveyor of the second separator means/­third conveyor means combination has a plurality of openings, preferably between about 3/8 and 1 1/2 inches, and most preferably about 3/4 inch, in diameter through which a further portion of the vibrated ash or other comminuted carbonaceous incineration byproduct preferably less than about 3/4 to 1 inch in diameter passes to a further collection station positioned below the vibrating screen/conveyor.
  • the further collection station is a continuation of the belt conveyor or other collection device transporting the ash or other comminuted carbonaceous incineration byproduct that had passed through the first vibrating screen/conveyor described above.
  • the second magnetic means 1 is similar to the first magnetic means 11 described previously and is used in the system prior to the first crushing means, and preferably prior to the first conveying means, to separate initially a portion of the ferrous metal components, such as iron and steel components, from the non-ferrous components, such as aluminum components.
  • the use of such second magnetic means reduces the quantity of feed material delivered to the first crushing means and the other parts of the recovery system.
  • a third separating means 2 prior to the first crushing means 4 is preferably used in the system to separate noncarbonaceous materials other than ferrous and non-ferrous metal components, such as glass, sand and dirt, from the feed material delivered to the first crushing means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP86307640A 1985-10-24 1986-10-03 Anlage zur Wiedergewinnung verwertbarer Eisen- und Nichteisenmetallkomponenten aus verbrannten Abfällen Expired - Lifetime EP0220853B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US79081885A 1985-10-24 1985-10-24
US790818 1985-10-24
CA000616850A CA1340476C (en) 1985-10-24 1994-03-31 System for recovery of salvageable ferrous and non-ferrous metal components from incinerated waste materials

Publications (3)

Publication Number Publication Date
EP0220853A2 true EP0220853A2 (de) 1987-05-06
EP0220853A3 EP0220853A3 (en) 1989-08-16
EP0220853B1 EP0220853B1 (de) 1993-12-22

Family

ID=25673251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86307640A Expired - Lifetime EP0220853B1 (de) 1985-10-24 1986-10-03 Anlage zur Wiedergewinnung verwertbarer Eisen- und Nichteisenmetallkomponenten aus verbrannten Abfällen

Country Status (4)

Country Link
EP (1) EP0220853B1 (de)
JP (1) JPS62164835A (de)
CA (2) CA1269355A (de)
DE (1) DE3689440T2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440993A1 (de) * 1990-02-05 1991-08-14 Multi Minerals Verfahren und Vorrichtung zum Wiedergewinnen von Produkten aus Rückständen für weitere Behandlung
DE4306781A1 (de) * 1993-03-04 1994-09-08 Kloeckner Humboldt Deutz Ag Verfahren und Anlage zur Aufbereitung von kunststoffreichen Müllgemischen
US5632380A (en) * 1995-10-17 1997-05-27 Shaneway, Inc. Ferrous material recovery system
EP0765686A3 (de) * 1995-09-29 1997-07-16 Dsu Gmbh Verfahren zur Auftrennung von Müllverbrennungsaschen in Eisen und mineralische Fraktionen
CN109331977A (zh) * 2018-12-21 2019-02-15 荣成市固废综合处理与应用产业园有限公司 一种生活垃圾焚烧发电炉渣处理系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0498007A (ja) * 1990-08-15 1992-03-30 Shokin Chin トンネル式ごみ焼却装置
DE19527382A1 (de) * 1995-07-27 1997-01-30 Dsu Gmbh Verfahren zur Anreicherung und Abtrennung von Kohlenstoffen aus Aschen von Verbrennungsanlagen
DE19529208A1 (de) * 1995-08-09 1997-02-13 Dsu Gmbh Verfahren zur Anreicherung und Abtrennung von eisen- und eisenoxidarmen Anteilen von stark verschlackten, feuerfesten Materialien
CA2886896C (en) * 2012-10-12 2020-03-10 Blue Sky Mines Ltd. Methods of and systems for treating incinerated waste

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675970A (en) * 1952-12-22 1954-04-20 Harold G Edwards Crushing and flattening machine
US2971703A (en) * 1958-06-04 1961-02-14 Frank E Rath Process for cleaning and recovering scrap metal from slag and the like
US3117735A (en) * 1960-08-26 1964-01-14 Prep Ind Combustibles Apparatus for crushing solid products
FR2303600A1 (fr) * 1975-03-12 1976-10-08 Rech Geolog Miniere Procede mecanique de separation des constituants des rejets solides urbains apres degradation thermique ou de rejets industriels similaires
US4330090A (en) * 1980-04-14 1982-05-18 The United States Of America As Represented By The Secretary Of The Interior Method for wrought and cast aluminum separation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440993A1 (de) * 1990-02-05 1991-08-14 Multi Minerals Verfahren und Vorrichtung zum Wiedergewinnen von Produkten aus Rückständen für weitere Behandlung
DE4306781A1 (de) * 1993-03-04 1994-09-08 Kloeckner Humboldt Deutz Ag Verfahren und Anlage zur Aufbereitung von kunststoffreichen Müllgemischen
EP0765686A3 (de) * 1995-09-29 1997-07-16 Dsu Gmbh Verfahren zur Auftrennung von Müllverbrennungsaschen in Eisen und mineralische Fraktionen
US5632380A (en) * 1995-10-17 1997-05-27 Shaneway, Inc. Ferrous material recovery system
CN109331977A (zh) * 2018-12-21 2019-02-15 荣成市固废综合处理与应用产业园有限公司 一种生活垃圾焚烧发电炉渣处理系统

Also Published As

Publication number Publication date
DE3689440D1 (de) 1994-02-03
JPS62164835A (ja) 1987-07-21
EP0220853A3 (en) 1989-08-16
DE3689440T2 (de) 1994-05-11
CA1340476C (en) 1999-03-30
CA1269355A (en) 1990-05-22
EP0220853B1 (de) 1993-12-22

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