US3582004A - Method of recovering metals from cables and the like - Google Patents

Method of recovering metals from cables and the like Download PDF

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Publication number
US3582004A
US3582004A US3582004DA US3582004A US 3582004 A US3582004 A US 3582004A US 3582004D A US3582004D A US 3582004DA US 3582004 A US3582004 A US 3582004A
Authority
US
United States
Prior art keywords
sink
comminuted
separator
cables
separators
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.)
Expired - Lifetime
Application number
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English (en)
Inventor
Hans Lenz
Jochen Mehlbeer
Heinrich Macura
Otto Weidner
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.)
EISEN und METALL AG
Original Assignee
EISEN und METALL AG
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 DEE34165A external-priority patent/DE1263641B/de
Priority claimed from DE19671558407 external-priority patent/DE1558407C2/de
Priority claimed from DE19681758265 external-priority patent/DE1758265B1/de
Application filed by EISEN und METALL AG filed Critical EISEN und METALL AG
Application granted granted Critical
Publication of US3582004A publication Critical patent/US3582004A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/005—Preliminary treatment of scrap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B15/00—Apparatus or processes for salvaging material from cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0217—Mechanical separating techniques; devices therefor
    • B29B2017/0237—Mechanical separating techniques; devices therefor using density difference
    • B29B2017/0244—Mechanical separating techniques; devices therefor using density difference in liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0268—Separation of metals
    • B29B2017/0272—Magnetic separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/065—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts containing impurities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/02—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/04—Lead
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/08—Transition metals
    • B29K2705/10—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3462—Cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/707—Cables, i.e. two or more filaments combined together, e.g. ropes, cords, strings, yarns
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • 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
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • 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
    • Y02W30/62—Plastics recycling; Rubber recycling
    • 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
    • Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]

Definitions

  • the comminuted material is successively treated in belt sink separators individually associated with draining screens and conveyors operatively connected therewith for removing floats from the rst separator or separators and sinks from the last separator.
  • the several sink separators are operated at different turbidities.
  • the invention relates to methods of recovering metals from discarded cables and cable scrap whereby the cables or the cable scrap are opened and comminuted in a hammer mill.
  • Discarded cables as ground cables and the like, are usually composed of more than 50 percent by volume of insulating materials, such as synthetic substances, rubber and paper, of the conductor proper, usually copper or aluminum, or armor and cladding of steel and lead.
  • insulating materials such as synthetic substances, rubber and paper
  • Such cables can be decomposed into their components by means of a hammer mill or by so-called cutting mills.
  • Mechanical sorting of the product of comminution is very difficult because this product, as a whole, is likely to mat and, particularly, the metals which are in the form of more or less long wires and strips tend to bunch.
  • lt is accordingly among the principal objects of the present invention to provide for an effective and efficient sorting for recovering metals from a product of comminution.
  • the output of a hammer mill is conveyed without intermediate storage to a first sink separator and the intermediate product thereof is directly conveyed to a second sink separator having a different turbidity. If desired, the intermediate product of the second separator is directly conveyed to al third sink separator.
  • the traveling velocitiesto and through the sink separators of the respective products which must be sorted, and of the intermediate product, as long as still at least two metal sorts are contained therein, are so adjusted that the volumetric breaking apart thereof produced by the hammer mill, particularly of the metals to be' recovered, is essentially maintained.
  • the separating practice it is usual to store the comminuted raw input in a buffer bunker in order yto obtain an equalization of the input amountland an equalization of the input composition for the subsequent separating process.
  • the invention departs from these conventional steps and obtains the new result of avoiding matting or bunching of the individual components of the product of the comminution.
  • the cables to be broken down usually contain iron parts, for example steel armor, which are suitably separated by subjecting the comminuted material on its way to the first sink separator to the action of a magnetic separator.
  • suction is provided at the hammer mill outlet. A portion of the dust and mainly fine pieces of insulation, in certain circumstances also paper and the like, are thereby separated ahead of the first part of the separating process.
  • the floats of the first separator which contain one of the metals to be recovered, for example, aluminum, are subjected to a second sink separation at less turbidity.
  • the last-mentioned embodiment of the invention deviates from the conventional methods of floating and separating at first the main component of the material to be separated, namely the light, insulating substances in the first heavy medium separator at less turbidity, for example about 2 grams per cubic centimeter.
  • the method according to the invention separates at first at a turbidity of, for example 2.8 grams per cubic centimeter the input material into two components, the floats consisting of insulating material and aluminum. lt is thereby avoided that later on aluminum and copper wir'e pieces bunch together when sinking in the separator, and being removed therefrom, respectively, and that the irregularly formed bent copper wire pieces which tend to compact, clamp the aluminum wires.
  • a plant or other apparatus for sorting comminuted cables comprises a suction device that is placed at the outlet of a hammer mill, a conveyor receiving the output of the hammer mill, a magnetic separator acting on the comminuted material and positioned adjacent the conveyor, a first belt sink separator supplied by the conveyor for separating the light components, a second belt sink separator receiving the sinks of the first belt sink separator, a drainage screen with conveyor belt being associated with each of the two belt sink separators for receiving the floats, and a drainage screen and a conveyor belt additionally being associated with the second belt sink separator for receiving sinks therefrom.
  • lnsulating material, aluminum, copper and lead may be received by the first belt sink separator.
  • the insulating material is separated as floats at a turbidity of about 2.0 grams per cubic centimeter.
  • Aluminum floats up in the second belt sink separator at a turbidity of 2.8 to 3 grams per cubic centimeter.
  • the remaining sinks still contain copper and lead which may be separated by hand on a subsequent picking belt.
  • belt sink separators for example drum sink float separators may be used.
  • a cutting or shearing comminuting apparatus having rotating knives follows the conveyor belt which receives the output of the hammer mill.
  • v F lG. l is a diagrammatic illustration of a plant for performing the method according to the invention.
  • FIG. 2 is a diagrammatic illustration of a modified plant according to the invention.
  • a feeder belt l transports raw material to a hammer mill 2.
  • the material comminuted in the hammer mill 2 is placed on a conveyor belt 4.
  • a large portion of the fine and light components is sucked of by a suction device'3.
  • a lifting magnet 5 is placed at the end of the conveyor belt d for extracting iron pieces.
  • the material which is now free of dust and iron parts is supplied to a first belt sink separator 6, the turbidity of which is so adjusted that the insulating material floats up.
  • lt is rinsed off on a draining screen l2 and removed on a conveyor belt 13.
  • the sinks of the first separator 6 are divided into aluminum and copper in a second belt sink separator'7.
  • the floating aluminum arrives at a conveyor belt lll by way of a draining screen the heavy copper arrives at a conveyor belt 9 by means of a draining screen 8.
  • FIG. 2 shows a second embodiment of the invention, like parts being designated by like numerals in both Figures.
  • the material which is free of dust and iron is fed into a comminuting apparatus 14 having rotating knives, before the material is fed into the belt sink separator 6. Thereafter, the additionally broken up and comminuted material is treated in and conducted through a plant identical with the plant shown in FIG. l and described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US3582004D 1967-06-12 1968-06-11 Method of recovering metals from cables and the like Expired - Lifetime US3582004A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEE34165A DE1263641B (de) 1967-06-12 1967-06-12 Verfahren und Anlage zur Rueckgewinnung von Metallen aus Altkabeln und Kabelschrott
DE19671558407 DE1558407C2 (de) 1967-06-13 1967-06-13 Verfahren zur Ruckgewinnung von Metallen aus Altkabeln
DE19681758265 DE1758265B1 (de) 1968-05-03 1968-05-03 Verfahren zur Rueckgewinnung von Metallen aus Altkabeln

Publications (1)

Publication Number Publication Date
US3582004A true US3582004A (en) 1971-06-01

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ID=27180800

Family Applications (1)

Application Number Title Priority Date Filing Date
US3582004D Expired - Lifetime US3582004A (en) 1967-06-12 1968-06-11 Method of recovering metals from cables and the like

Country Status (5)

Country Link
US (1) US3582004A (OSRAM)
BE (1) BE716415A (OSRAM)
FR (1) FR1567755A (OSRAM)
GB (1) GB1196838A (OSRAM)
NL (1) NL6808070A (OSRAM)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280901A (en) * 1979-07-06 1981-07-28 Nassau Recycle Corporation Method and apparatus for separating finely sized materials
US4332677A (en) * 1980-10-30 1982-06-01 Nassau Recycle Corporation Process for reclaiming composite materials
US4362276A (en) * 1977-12-08 1982-12-07 Occidental Research Corporation Process and apparatus for recovering metal and plastic from insulated wire
US4809854A (en) * 1987-01-12 1989-03-07 Nelmor Co., Inc. Flotation apparatus for reclaiming bonded, two-resin articles
US4940187A (en) * 1989-10-26 1990-07-10 Tocew Lee Systematic equipments for recycling raw materials from waste wires
WO1991004100A1 (en) * 1989-09-15 1991-04-04 Plastic Recovery Systems, Inc. Process for the separation and recovery of plastics
EP0431582A1 (en) * 1989-12-06 1991-06-12 Consiglio Nazionale Delle Ricerche Process for separating and recovering lead, rubber and copper wires from waste cables
US5275292A (en) * 1992-05-18 1994-01-04 Brugger Richard D Eddy current separator
US20120199677A1 (en) * 2009-10-15 2012-08-09 Mg Recycling S.R.L. Machine For Differentiated Recuperation Of Industrial Scrap
CN106984416A (zh) * 2017-05-25 2017-07-28 四川晶天地新材料科技有限公司 一种石英砂加工工艺
CN112908574A (zh) * 2021-01-15 2021-06-04 郭茜 一种废旧电缆绝缘层处理装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410961A1 (de) * 1984-03-24 1985-10-03 Amberger Kaolinwerke Gmbh, 8452 Hirschau Verfahren zur trennung metallischer anteile von nichtmetallischen anteilen eines entsprechenden gemenges, sowie dazugehoerige anordnung
CN115837773B (zh) * 2023-02-16 2023-04-25 烟台日升包装有限公司 一种食品包装盒自动生产装置及生产方法

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362276A (en) * 1977-12-08 1982-12-07 Occidental Research Corporation Process and apparatus for recovering metal and plastic from insulated wire
US4280901A (en) * 1979-07-06 1981-07-28 Nassau Recycle Corporation Method and apparatus for separating finely sized materials
US4332677A (en) * 1980-10-30 1982-06-01 Nassau Recycle Corporation Process for reclaiming composite materials
US4809854A (en) * 1987-01-12 1989-03-07 Nelmor Co., Inc. Flotation apparatus for reclaiming bonded, two-resin articles
US5022985A (en) * 1989-09-15 1991-06-11 Plastic Recovery Systems, Inc. Process for the separation and recovery of plastics
WO1991004100A1 (en) * 1989-09-15 1991-04-04 Plastic Recovery Systems, Inc. Process for the separation and recovery of plastics
US4940187A (en) * 1989-10-26 1990-07-10 Tocew Lee Systematic equipments for recycling raw materials from waste wires
EP0431582A1 (en) * 1989-12-06 1991-06-12 Consiglio Nazionale Delle Ricerche Process for separating and recovering lead, rubber and copper wires from waste cables
US5275292A (en) * 1992-05-18 1994-01-04 Brugger Richard D Eddy current separator
US20120199677A1 (en) * 2009-10-15 2012-08-09 Mg Recycling S.R.L. Machine For Differentiated Recuperation Of Industrial Scrap
CN106984416A (zh) * 2017-05-25 2017-07-28 四川晶天地新材料科技有限公司 一种石英砂加工工艺
CN112908574A (zh) * 2021-01-15 2021-06-04 郭茜 一种废旧电缆绝缘层处理装置
CN112908574B (zh) * 2021-01-15 2022-08-09 东莞市江隆电业有限公司 一种废旧电缆绝缘层处理装置

Also Published As

Publication number Publication date
NL6808070A (OSRAM) 1968-12-13
FR1567755A (OSRAM) 1969-05-16
BE716415A (OSRAM) 1968-11-04
GB1196838A (en) 1970-07-01

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