EP1084499A1 - Procede et dispositif de recyclage d'un cable a bourrage gelatineux - Google Patents

Procede et dispositif de recyclage d'un cable a bourrage gelatineux

Info

Publication number
EP1084499A1
EP1084499A1 EP19990914369 EP99914369A EP1084499A1 EP 1084499 A1 EP1084499 A1 EP 1084499A1 EP 19990914369 EP19990914369 EP 19990914369 EP 99914369 A EP99914369 A EP 99914369A EP 1084499 A1 EP1084499 A1 EP 1084499A1
Authority
EP
European Patent Office
Prior art keywords
cable
receptacle
jelly
medium
heater
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.)
Withdrawn
Application number
EP19990914369
Other languages
German (de)
English (en)
Inventor
David Thomas Rowe
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.)
Individual
Original Assignee
Individual
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 AUPP3402A external-priority patent/AUPP340298A0/en
Priority claimed from AUPP6841A external-priority patent/AUPP684198A0/en
Application filed by Individual filed Critical Individual
Publication of EP1084499A1 publication Critical patent/EP1084499A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01B15/003—Apparatus or processes for salvaging material from cables by heating up
    • 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

  • This invention relates to the recycling of metal strands from cable, particularly telecommunications cable.
  • Telecommunications cables are usually made up of internal copper strands surrounded by a polyethylene coating. During manufacture, some telecommunications cables are pumped full of wax or 'jelly', in order to counter problems caused by the ingress of water into telecommunications cable once in use.
  • This invention accordingly provides a process of recycling jelly filled cable by providing a pretreatment step in order to recover copper free or substantially free of jelly residue and which avoids the use of hazardous solvents or burning.
  • the invention is described in relation to the recovery of copper, it has application to the recovery of any metal from jelly filled cables.
  • the invention resides in a process for recycling metal from polyethylene coated jelly filled cable, including heating the cable to a temperature in excess of 115°C so as to cause the jelly to be absorbed by the polyethylene coating.
  • the invention resides in apparatus for recycling metal from polyethylene coated jelly filled cable, including a receptacle for holding cable during the process, and a heater for heating a medium to a temperature in excess of 115°C.
  • the apparatus further includes means for recirculating the medium from the heater into the receptacle and back to the heater.
  • the medium is air.
  • An alternative preferred form of the medium is water. 3
  • the process include the step of chopping or shredding the cable into segments before heating.
  • the cable is bathed in the medium while it is being heated.
  • the metal is copper.
  • the cable is heated to a temperature between 115°- 135°.
  • the cable be heated to a temperature of 125°C.
  • the cable treated according to the above process is free or substantially free of any jelly residue and can be treated by conventional known methods in order to recover copper free or substantially free from j elly residue.
  • Figure 1 is a perspective view of apparatus according to an embodiment of the present invention.
  • Figure 2 is an elevational view, partly in section, of the apparatus of Figure 1.
  • Figure 3 is a cross-sectional view along the line 3-3 of Figure 2.
  • Apparatus 1 includes a high temperature, high pressure 'furnace' fan 2 connected to ducting 3 which contains a heater (not illustrated).
  • the heater may be powered by any suitable source, such as natural gas or electricity 4
  • the fan 2 and ducting 3 are fixedly mounted on a base 4.
  • Support members 6 and 7 project upwardly from base 6, and are braced by diagonal members 8 and 9.
  • the upright members 6 and 7 the diagonal members 8 and 9 and the base 4 define a bay for the reception of a removable receptacle 14 to hold cable (not illustrated) which is being treated in accordance with the process.
  • the receptacle 14 is double- skinned and contains thermal insulation (not illustrated) between the skins.
  • Ducting 18 communicates between the outlet of the fan 2 and opening 20 in receptacle 14.
  • the receptacle 14 has a 'false bottom' in the form of a fabricated metal grid 19.
  • the base of the receptacle 14 includes a trough shaped region 17.
  • An outlet 21 in the lower rear centre of the receptacle 14 communicates with the interior of the trough and is closed off by a tap (not illustrated) exterior to the trough 17.
  • a hood 11 is pivotally mounted near the uppermost ends of support members 6 and 7.
  • the hood is double-skinned and contains thermal insulation (not illustrated) between the skins. It is preferred that the hood 11 be pivotable between the lower position illustrated in the drawings and the upper position shown in outline in Figure 2 by operation of the hydraulic cylinders 12 and 13.
  • Flexible ducting 16 communicates between the hood 11 and the ducting 3, which in turn communicates with the inlet of the Fan 2.
  • the hood 11 When the apparatus is in use, the hood 11 is in the lower position illustrated in the Figures to form a substantially airtight seal with the opening of the receptacle 14.
  • the receptacle 14 is positioned so that a substantially airtight seal is formed between opening 20 and the ducting 18. Airflow induced by the fan 2 is through ducting 18, upwards through the false bottom 19 of receptacle 14, out of the receptacle 14 through flexible ducting 16 into ducting 3 where it flows past the heater (not illustrated) and is heated, and into the inlet of the fan 2. 5
  • telecommunications cable made up of copper strands having a polyethylene coating and filled with a wax or jelly is then placed in the receptacle 14 where it is exposed to super heated medium and heated to a temperature of 125°C.
  • the jelly will start to be absorbed by the polyethylene coating of the cable. Heating the cable up to 125°C will result in all or substantially all of the jelly being absorbed.
  • the absorption of the jelly will take place above 125°C. However, at approximately 135°C and above the polyethylene coating will start to melt into a solid mass. Elevating the temperature further will, depending on how high the temperature is raised, cause the plastic to melt to a liquid state. At this point the plastic will also drip through the false bottom 19 and accumulate, like the liquid jelly, in the trough area 17. The amount of plastic that so melts off will depend on the level to which the temperature is elevated.
  • the cable is then subjected to further treatment by conventional means to remove the copper wire from the polyethylene coating.
  • the copper recovered from this process is or is substantially dry and free from jelly residue or 'stickiness'.

Landscapes

  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

L'invention concerne un procédé de recyclage de câbles à bourrage gélatineux qui consiste à placer le câble dans un réceptacle (14). Un ventilateur (2) fait recirculer l'air qui traverse une canalisation (18) en direction du réceptacle (14) à travers une fausse base (19), puis qui s'échappe par une hotte (11) et des canalisations (16, 3) après avoir traversé un appareil chauffant pour revenir finalement au ventilateur (2). Dès que la chaleur du câble dépasse 115 °C, la gelée est absorbée par le revêtement de polyéthylène du câble.
EP19990914369 1998-05-07 1999-04-20 Procede et dispositif de recyclage d'un cable a bourrage gelatineux Withdrawn EP1084499A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AUPP340298 1998-05-07
AUPP3402A AUPP340298A0 (en) 1998-05-07 1998-05-07 Cable recycling process
AUPP6841A AUPP684198A0 (en) 1998-11-02 1998-11-02 Process of and apparatus for recycling jelly filled cable
AUPP684198 1998-11-02
PCT/AU1999/000289 WO1999059167A1 (fr) 1998-05-07 1999-04-20 Procede et dispositif de recyclage d'un cable a bourrage gelatineux

Publications (1)

Publication Number Publication Date
EP1084499A1 true EP1084499A1 (fr) 2001-03-21

Family

ID=25645774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990914369 Withdrawn EP1084499A1 (fr) 1998-05-07 1999-04-20 Procede et dispositif de recyclage d'un cable a bourrage gelatineux

Country Status (4)

Country Link
EP (1) EP1084499A1 (fr)
CA (1) CA2331346A1 (fr)
TW (1) TW434582B (fr)
WO (1) WO1999059167A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012049653A1 (fr) * 2010-10-13 2012-04-19 Hemivect (Proprietary) Limited Câble électrique, ainsi que procédé et composition destinés à empêcher le recyclage d'un câble électrique
CN104307853B (zh) * 2014-10-30 2017-02-15 广东丰裕环保科技股份有限公司 一种电子废弃物回收装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3821026A (en) * 1971-11-05 1974-06-28 E Swartz Scrap metal recovery method and apparatus
GB2207255B (en) * 1987-07-18 1991-03-20 Stc Plc Removing optical fibre encapsulation with a heated gas jet
US4852471A (en) * 1987-11-10 1989-08-01 Jvj Enterprises, Inc. Semiautomatic frying machine and air filter apparatus therefor
DE19507513A1 (de) * 1995-03-03 1996-09-05 Metallaufbereitung Zwickau Gmb Verfahren zur Verwertung von gemischten Kabelabfällen zu sortenreinen Metall- und Kunststofffraktionen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9959167A1 *

Also Published As

Publication number Publication date
TW434582B (en) 2001-05-16
WO1999059167A1 (fr) 1999-11-18
CA2331346A1 (fr) 1999-11-18

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