CN105355338A - Method for processing scrap wire and cable - Google Patents
Method for processing scrap wire and cable Download PDFInfo
- Publication number
- CN105355338A CN105355338A CN201510763024.7A CN201510763024A CN105355338A CN 105355338 A CN105355338 A CN 105355338A CN 201510763024 A CN201510763024 A CN 201510763024A CN 105355338 A CN105355338 A CN 105355338A
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- Prior art keywords
- wrapped
- cable
- processing method
- mixed material
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Classifications
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- 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
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- 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
- H01B15/001—Apparatus or processes for salvaging material from cables by cooling down
-
- 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
-
- 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
- H01B15/008—Apparatus or processes for salvaging material from cables by crushing
-
- 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]
Abstract
The present invention discloses a method for processing a scrap wire and cable. The method comprises the steps of (1) carrying out pretreatment of the skin materials of a scrap wire and cable as raw materials, crushing the materials and then screening the materials, taking the granules of 5 to 20 meshes, and mixing the granules and sodium bicarbonate to obtain a mixed material, (2) winding a layer of polyester film around the outer part of a oxygen-free copper and tinned copper compound stranded wire which is taken as a soft conductor to be a winded polyester belt layer, (3) extruding an insulating layer outside the conductor winded in the step (2) with the mixed material obtained in the step (1) as a raw material by using an SJ-65/25 extruder, wherein the extrusion should be uniform, the thickness is consistent, the surface is smooth, and the color is consistent, (4) winding a layer of fire-resistant ceramic silicone rubber belt outside the insulation layer to be a fire-resistant layer, wherein the winding should be uniform without wrinkles, the thickness is consistent, the surface is smooth, and the color is consistent, and (5) extruding an insulation layer outside the fire-resistant layer completed in the step (4) with the mixed material obtained in the step (1) as a raw material by using an SJ-90 or120 extruder to obtain a product.
Description
Technical field
The invention belongs to technical field of rubber production, be specifically related to the processing method of a kind of scrap electrical wires, cable.
Background technology
The evolution of electric wire product is in fact the update process of material.Electric wire is of many uses, and different use occasion is widely different to its performance requirement.The insulating material of major part cable, except must having higher insulation resistance, dieletric strength or low dielectric loss, also must take into account good physical and mechanical properties, as tension, counter-bending, anti-vibration, antitorque etc.; Sheath material then owing to will adapt to different environments for use and occasion, has the requirements such as tear-proof, high-low temperature resistant, weather, oil resistant, solvent resistant; Some is then the composite request proposed for finished cable, as radial direction, longitudinal pressure sealing, fire-retardant, fire-resistant etc.Under these require the prerequisite of superposition mutually, choose reasonable and the cooperation of material are the decisive factors that can cable meet customer requirement.
Current wire cable insulating material can be divided into plastic insulation material and rubber insulation material substantially, mentionedly in the present invention refers to rubber insulation material.
In Long-Time Service process, some eliminates scrap unavailable, or damage through too high current/voltage flowing calcination, or in production and processing, the cable that cannot use is caused because of fault, or being usually referred to as waste and old cable by people scraps cable.Waste and old cable is when can not normally use, capital is classified as waste and old process, some cables are responsible for depot repair and replacing by producer, other can not get replacing, generally all can be classified as copper scrap class to dispose, transfer to the waste and old material of each department to reclaim business during process and carry out purchase process, reclaim business by waste and old material and be responsible for carrying out stripping off the skin and reclaiming copper wherein of cable, the copper wherein obtaining cable delivers to copper work processing cable or other copper product again, or is directly smelt copper ingot.Then another component rubber in waste and old cable, but must not be fully utilized, and scrap rubber is a kind of macromolecule pollutant being only second to waste plastics.Because rubber is difficult to degraded, become " black pollution " worthy of the name.
If the problems such as the heap sum pollution of the waste old in cable can be solved, and use it for the manufacture of cable insulation.No matter from economic worth or in environmental protection, resource reclaim is all significant.
Summary of the invention
Goal of the invention: the processing method that the object of this invention is to provide a kind of scrap electrical wires, cable, can obtain qualified cable insulation material by the method.
Technical scheme: the processing method that the invention provides a kind of scrap electrical wires, cable, following steps are carried out:
Step 1) with the coating material of waste and old electric wire, cable for raw material, after preliminary treatment, carry out fragmentation, after broken, screening, gets 5 ~ 20 object particles, mixes, obtain mixed material with sodium acid carbonate;
Step 2) answer twisted wire for flexible conductor, at its outside wrapped one deck polyester film as wrapped polyester belt with oxygen-free copper, tin-coated copper;
Step 3) adopt SJ-65/25 plastic extruding machine, with step 1) in the mixed material that obtains be raw material, to step 2) in extrude a layer insulating outside wrapped good conductor, described extruding needs evenly, consistency of thickness, smooth surface and solid colour;
Step 4) outside above-mentioned insulating barrier, wrapped one deck refractory silicone rubber belt is as flame retardant coating, and described wrapped necessary tight smooth phozy, extrudes evenly, consistency of thickness, smooth surface and solid colour;
Step 5) adopt SJ-90 or 120 plastic extruding machines, with step 1) in the mixed material that obtains be raw material, to step 4) in extrude a layer insulating outside the flame retardant coating 4 that completes, obtain product.
Concrete, described step 1) in pre-treatment step be: at-25 ~-20 DEG C freezing 10 ~ 12 hours, be then directly placed in the baking oven heating 2 ~ 3 hours of 70 ~ 75 DEG C, at being-25 ~-20 DEG C freezing 10 ~ 12 hours, then carry out fragmentation.Preferably at-25 DEG C freezing 10 hours, be then directly placed in the baking oven heating 2 hours of 70 DEG C, at being-25 DEG C freezing 10 hours, then carry out fragmentation.Step 1) described in particle and the mass ratio of carbonic hydroammonium be 100:1 ~ 2.
Concrete, described step 2) in wrapped polyester belt must tight smooth phozy.
Concrete, described step 3) in SJ-65/25 extruder screw be equidistant etc. not dark gradual change shape.
Described step 3) and step 5) in each bringing-up section temperature of extruder barrel be set as: 160,180,190,195,200,205 DEG C degrees Celsius, temperature difference scope ± 2 DEG C.
Described step 5) in SJ-90 or 120 extruder screw be equidistant etc. not dark gradual change shape.
Further research finds, if add a small amount of paraffin in mixed material, be more conducive to the extrusion molding of material, concrete, mixed with carbonic hydroammonium, paraffin by described particle, obtain mixed material, the mass ratio of three is: 100:1 ~ 2:0.5 ~ 1.Preferred 100:1:0.5.
Beneficial effect: the method for the invention, for the surrounding layer of scrap electrical wires, cable, the cable obtained by the method for the invention process have identical with original cable anti-light, thermal endurance is aging, oil resistant, water-fast and sour, alkali salt characteristic; Fire-retardant clean environment firendly is non-toxic, and fire resistance reaches UL-Vo level.Have excellent thermoplasticity processing characteristics, clean material directly can reclaim reprocessing simultaneously, saves material, has very high cost performance.
Embodiment:
Embodiment 1
Step 1) with the coating material of waste and old electric wire, cable for raw material, its hot strength is 11MPa, and elongation at break is 400%, Shao Er hardness is 55 degree.
By above-mentioned raw materials at-20 DEG C freezing 12 hours, be then directly placed in the baking oven heating 2 hours of 70 DEG C, carry out fragmentation after freezing 12 hours at being-20 DEG C, after broken, screening, got 5 ~ 20 object particles.By above-mentioned particle 980kg, mix with sodium acid carbonate 9.8kg.Said mixture is imported in extruder, entrance point 20 DEG C, the port of export 100 DEG C, maximum temperature section 270 ~ 290 DEG C.
Step 2) answer twisted wire for flexible conductor, at its outside wrapped one deck polyester film as wrapped polyester belt with oxygen-free copper, tin-coated copper; Described wrapped necessary tight smooth phozy;
Step 3) adopt SJ-65/25 plastic extruding machine, with step 1) in the mixed material that obtains be raw material, to step 2) in extrude a layer insulating outside wrapped good conductor, described extruding needs evenly, consistency of thickness, smooth surface and solid colour, described SJ-65/25 extruder screw is equidistant etc. not dark gradual change shape; The each bringing-up section temperature of described extruder barrel is set as: 160,180,190,195,200,205 DEG C degrees Celsius, temperature difference scope ± 2 DEG C.
Step 4) outside above-mentioned insulating barrier, wrapped one deck refractory silicone rubber belt is as flame retardant coating, and the wrapped necessary tight smooth phozy of described band, extrudes evenly, consistency of thickness, smooth surface and solid colour;
Step 5) adopt SJ-90 or 120 plastic extruding machines, with step 1) in the mixed material that obtains be raw material, to step 4) in extrude a layer insulating outside the flame retardant coating 4 that completes, SJ-90 or 120 extruder screw are equidistant etc. not dark gradual change shape.Obtain product, fire resistance reaches UL-Vo level.
Products obtained therefrom is carried out to survey tensile strength and elongation rate test, carries out electrical performance test, and result of the test meets the national standard-GB/T127061-2008 of cable.
Embodiment 2
Step 1) with the coating material of waste and old electric wire, cable for raw material, its hot strength is 11MPa, and elongation at break is 400%, Shao Er hardness is 55 degree.
By above-mentioned raw materials at-25 DEG C freezing 10 hours, be then directly placed in the baking oven heating 3 hours of 75 DEG C, carry out fragmentation after freezing 10 hours at being-25 DEG C, after broken, screening, got 5 ~ 20 object particles.By above-mentioned particle 980kg, mix with sodium acid carbonate 9.8kg.Said mixture is imported in extruder, entrance point 20 DEG C, the port of export 100 DEG C, maximum temperature section 270 ~ 290 DEG C.
Step 2) answer twisted wire for flexible conductor, at its outside wrapped one deck polyester film as wrapped polyester belt with oxygen-free copper, tin-coated copper; Described wrapped necessary tight smooth phozy;
Step 3) adopt SJ-65/25 plastic extruding machine, with step 1) in the mixed material that obtains be raw material, to step 2) in extrude a layer insulating outside wrapped good conductor, described extruding needs evenly, consistency of thickness, smooth surface and solid colour, described SJ-65/25 extruder screw is equidistant etc. not dark gradual change shape; The each bringing-up section temperature of described extruder barrel is set as: 160,180,190,195,200,205 DEG C degrees Celsius, temperature difference scope ± 2 DEG C.
Step 4) outside above-mentioned insulating barrier, wrapped one deck refractory silicone rubber belt is as flame retardant coating, and the wrapped necessary tight smooth phozy of described band, extrudes evenly, consistency of thickness, smooth surface and solid colour;
Step 5) adopt SJ-90 or 120 plastic extruding machines, with step 1) in the mixed material that obtains be raw material, to step 4) in extrude a layer insulating outside the flame retardant coating 4 that completes, SJ-90 or 120 extruder screw are equidistant etc. not dark gradual change shape.Obtain product, fire resistance reaches UL-Vo level.
Products obtained therefrom is carried out to survey tensile strength and elongation rate test, carries out electrical performance test, and result of the test meets the national standard-GB/T127061-2008 of cable.
Embodiment 3
Step 1) with the coating material of waste and old electric wire, cable for raw material, its hot strength is 11MPa, and elongation at break is 400%, Shao Er hardness is 55 degree.
By above-mentioned raw materials at-20 DEG C freezing 12 hours, be then directly placed in the baking oven heating 2 hours of 70 DEG C, carry out fragmentation after freezing 12 hours at being-20 DEG C, after broken, screening, got 5 ~ 20 object particles.By above-mentioned particle 980kg, mix with sodium acid carbonate 9.8kg, carbonic hydroammonium 1kg, paraffin 0.5kg.Said mixture is imported in extruder, entrance point 20 DEG C, the port of export 100 DEG C, maximum temperature section 270 ~ 290 DEG C.
Step 2) answer twisted wire for flexible conductor, at its outside wrapped one deck polyester film as wrapped polyester belt with oxygen-free copper, tin-coated copper; Described wrapped necessary tight smooth phozy;
Step 3) adopt SJ-65/25 plastic extruding machine, with step 1) in the mixed material that obtains be raw material, to step 2) in extrude a layer insulating outside wrapped good conductor, described extruding needs evenly, consistency of thickness, smooth surface and solid colour, described SJ-65/25 extruder screw is equidistant etc. not dark gradual change shape; The each bringing-up section temperature of described extruder barrel is set as: 160,180,190,195,200,205 DEG C degrees Celsius, temperature difference scope ± 2 DEG C.
Step 4) outside above-mentioned insulating barrier, wrapped one deck refractory silicone rubber belt is as flame retardant coating, and the wrapped necessary tight smooth phozy of described band, extrudes evenly, consistency of thickness, smooth surface and solid colour;
Step 5) adopt SJ-90 or 120 plastic extruding machines, with step 1) in the mixed material that obtains be raw material, to step 4) in extrude a layer insulating outside the flame retardant coating 4 that completes, SJ-90 or 120 extruder screw are equidistant etc. not dark gradual change shape.Obtain product, fire resistance reaches UL-Vo level.
Products obtained therefrom is carried out to survey tensile strength and elongation rate test, carries out electrical performance test, and result of the test meets the national standard-GB/T127061-2008 of cable.
Embodiment 4
Step 1) with the coating material of waste and old electric wire, cable for raw material, its hot strength is 11MPa, and elongation at break is 400%, Shao Er hardness is 55 degree.
By above-mentioned raw materials at-25 DEG C freezing 10 hours, be then directly placed in the baking oven heating 3 hours of 75 DEG C, carry out fragmentation after freezing 10 hours at being-25 DEG C, after broken, screening, got 5 ~ 20 object particles.By above-mentioned particle 980kg, mix with sodium acid carbonate 9.8kg, carbonic hydroammonium 1kg, paraffin 0.5kg.Said mixture is imported in extruder, entrance point 20 DEG C, the port of export 100 DEG C, maximum temperature section 270 ~ 290 DEG C.
Step 2) answer twisted wire for flexible conductor, at its outside wrapped one deck polyester film as wrapped polyester belt with oxygen-free copper, tin-coated copper; Described wrapped necessary tight smooth phozy;
Step 3) adopt SJ-65/25 plastic extruding machine, with step 1) in the mixed material that obtains be raw material, to step 2) in extrude a layer insulating outside wrapped good conductor, described extruding needs evenly, consistency of thickness, smooth surface and solid colour, described SJ-65/25 extruder screw is equidistant etc. not dark gradual change shape; The each bringing-up section temperature of described extruder barrel is set as: 160,180,190,195,200,205 DEG C degrees Celsius, temperature difference scope ± 2 DEG C.
Step 4) outside above-mentioned insulating barrier, wrapped one deck refractory silicone rubber belt is as flame retardant coating, and the wrapped necessary tight smooth phozy of described band, extrudes evenly, consistency of thickness, smooth surface and solid colour;
Step 5) adopt SJ-90 or 120 plastic extruding machines, with step 1) in the mixed material that obtains be raw material, to step 4) in extrude a layer insulating outside the flame retardant coating 4 that completes, SJ-90 or 120 extruder screw are equidistant etc. not dark gradual change shape.Obtain product, fire resistance reaches UL-Vo level.
Products obtained therefrom is carried out to survey tensile strength and elongation rate test, carries out electrical performance test, and result of the test meets the national standard-GB/T127061-2008 of cable.
Claims (8)
1. a processing method for scrap electrical wires, cable, is characterized in that carrying out as follows:
Step 1) with the coating material of waste and old electric wire, cable for raw material, after preliminary treatment, carry out fragmentation, after broken, screening, gets 5 ~ 20 object particles, mixes, obtain mixed material with sodium acid carbonate;
Step 2) answer twisted wire for flexible conductor, at its outside wrapped one deck polyester film as wrapped polyester belt with oxygen-free copper, tin-coated copper;
Step 3) adopt SJ-65/25 plastic extruding machine, with step 1) in the mixed material that obtains be raw material, to step 2) in extrude a layer insulating outside wrapped good conductor, described extruding needs evenly, consistency of thickness, smooth surface and solid colour;
Step 4) outside above-mentioned insulating barrier, wrapped one deck refractory silicone rubber belt is as flame retardant coating, and described wrapped necessary tight smooth phozy, extrudes evenly, consistency of thickness, smooth surface and solid colour;
Step 5) adopt SJ-90 or 120 plastic extruding machines, with step 1) in the mixed material that obtains be raw material, to step 4) in extrude a layer insulating outside the flame retardant coating 4 that completes, obtain product.
2. processing method as described in claim 1, it is characterized in that described step 1) in pre-treatment step be: at-25 ~-20 DEG C freezing 10 ~ 12 hours, then the baking oven being directly placed in 70 ~ 75 DEG C heats 2 ~ 3 hours, at being-25 ~-20 DEG C freezing 10 ~ 12 hours, then carry out fragmentation.
3. as described in claim 1 processing method, is characterized in that described step 2) in wrapped polyester belt must tight smooth phozy.
4. as described in claim 1 processing method, is characterized in that described step 3) in SJ-65/25 extruder screw be equidistant etc. not dark gradual change shape.
5. as described in claim 1 processing method, is characterized in that described step 3) and step 5) in each bringing-up section temperature of extruder barrel be set as: 160,180,190,195,200,205 DEG C degrees Celsius, temperature difference scope ± 2 DEG C.
6. as described in claim 1 processing method, is characterized in that described step 5) in SJ-90 or 120 extruder screw be equidistant etc. not dark gradual change shape.
7. processing method as claimed in claim 1, is characterized in that the mass ratio of described particle and carbonic hydroammonium is 100:1 ~ 2.
8. processing method as claimed in claim 1, it is characterized in that, mix, obtain mixed material at described particle with carbonic hydroammonium, paraffin, the mass ratio of three is: 100:1 ~ 2:0.5 ~ 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763024.7A CN105355338A (en) | 2015-11-10 | 2015-11-10 | Method for processing scrap wire and cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763024.7A CN105355338A (en) | 2015-11-10 | 2015-11-10 | Method for processing scrap wire and cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105355338A true CN105355338A (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510763024.7A Withdrawn CN105355338A (en) | 2015-11-10 | 2015-11-10 | Method for processing scrap wire and cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105355338A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746645A (en) * | 2017-01-04 | 2018-11-06 | 苏建林 | A kind of recovery method as resource |
| CN110707606A (en) * | 2018-07-10 | 2020-01-17 | 鹰潭瑞鑫铜业有限公司 | Quick peeling and recycling device for copper wires |
-
2015
- 2015-11-10 CN CN201510763024.7A patent/CN105355338A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746645A (en) * | 2017-01-04 | 2018-11-06 | 苏建林 | A kind of recovery method as resource |
| CN110707606A (en) * | 2018-07-10 | 2020-01-17 | 鹰潭瑞鑫铜业有限公司 | Quick peeling and recycling device for copper wires |
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Application publication date: 20160224 |