CN109317497B - Treatment method for recycled steel fiber surface rubber layer - Google Patents
Treatment method for recycled steel fiber surface rubber layer Download PDFInfo
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- CN109317497B CN109317497B CN201711390789.6A CN201711390789A CN109317497B CN 109317497 B CN109317497 B CN 109317497B CN 201711390789 A CN201711390789 A CN 201711390789A CN 109317497 B CN109317497 B CN 109317497B
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- steel fiber
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- rubber
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 114
- 239000010959 steel Substances 0.000 title claims abstract description 114
- 239000000835 fiber Substances 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000010410 layer Substances 0.000 claims abstract description 27
- 229910000756 V alloy Inorganic materials 0.000 claims abstract description 11
- HBXWYZMULLEJSG-UHFFFAOYSA-N chromium vanadium Chemical compound [V][Cr][V][Cr] HBXWYZMULLEJSG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011148 porous material Substances 0.000 claims abstract description 10
- 239000002344 surface layer Substances 0.000 claims abstract description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention relates to a method for processing a rubber layer on the surface of recycled steel fiber, which comprises the steps of firstly carrying out local high-temperature processing on the steel fiber, and reducing the bonding strength and the toughness of rubber on the surface layer of the steel fiber through a round 80-DEG C high-temperature round pore passage so as to prepare for later stripping; then stripping off a large residual rubber block through a chromium-vanadium alloy steel pore clamp, so as to facilitate the fine treatment of the residual rubber; after the preliminary treatment of the step, the steel fiber is passed through a hole opening with the diameter of 1.5mm or 1.0mm, so that the thin rubber layer on the surface of the last layer of residual steel fiber is cleaned. The invention strips the adhesive rubber layer on the surface of the steel fiber extracted from the tire through a series of processes, thereby leading the tire bead steel fiber to have better adhesive action with concrete when in engineering application.
Description
Technical Field
The invention relates to a method for treating a rubber layer on the surface of recycled steel fiber, and relates to the technical field of steel fiber.
Background
The steel fiber has excellent toughness and good cohesiveness with concrete, and is widely applied to various engineering fields such as buildings, bridges, tunnels and the like. The recycled steel fiber is a high-strength tire bead steel wire extracted from waste tires along the circumferential direction of the tires, the strength of the high-strength tire bead steel wire is generally 470MPa, and the recycled steel fiber has higher strength and can well work together with concrete, so that the strength and the toughness of the concrete are well improved. The treatment of the recycled steel fiber is urgently needed to be industrially implemented, and the wide popularization and application of the recycled steel fiber in the field of civil engineering are facilitated. The existing steel fiber is mainly prepared by casting and refining industrial molten steel in a steel mill, and is not reasonably applied to the engineering field by extracting tire bead steel wires from tires. The recycled steel fiber directly extracted from the tire is provided with a thin rubber layer on the surface, and the rubber layer on the surface of the steel fiber can reduce the bonding effect of concrete and the steel fiber, and finally, the bearing capacity of the component can be reduced. Before the recycled steel fiber is used, the rubber layer needs to be removed completely to ensure the strength of the recycled steel fiber concrete.
Disclosure of Invention
The invention aims to provide a method for processing a rubber layer on the surface of a recycled steel fiber, so that a bonding rubber layer on the surface of the steel fiber can be peeled off cleanly through a series of processes.
In order to achieve the above object, the present invention has the following technical means.
A method for processing a rubber layer on the surface of recycled steel fiber comprises the steps of carrying out local high-temperature processing on the steel fiber, and reducing the bonding strength and the toughness of rubber on the surface layer of the steel fiber through a round 80-DEG C high-temperature round hole, so as to prepare for later stripping; then stripping off a large residual rubber block through a chromium-vanadium alloy steel pore clamp, so as to facilitate the fine treatment of the residual rubber; after the preliminary treatment of the step, the steel fiber is passed through a hole opening with the diameter of 1.5mm or 1.0mm, so that the thin rubber layer on the surface of the last layer of residual steel fiber is cleaned.
The method comprises the following specific steps:
(1) an 80-DEG C high-temperature local treatment device is adopted for carrying out high-temperature treatment on the rubber on the surface of the steel fiber; the middle of the device is a circular pore canal with the radius of 22mm, and the circular pore canal is used for the steel fiber to pass through the middle; the periphery of the steel fiber is provided with a thermal resistance wire 2 with the radius of 8mm, and the thermal resistance wire is used for locally heating the steel fiber; the thermal resistance wire is embedded in the high-temperature resistant ceramic plate; the whole device is a high-temperature resistance box with the length of 300mm, the width of 200mm and the height of 200 mm;
(2) after high-temperature treatment, the steel fiber passes through a chromium-vanadium alloy steel clamp, and the clamp has the dimensions of 202mm in length, 240mm in width and 40mm in height; the front section of the clamp is provided with a trapezoidal wedge opening, the upper bottom of the trapezoid is 22mm, the height of the trapezoid is 90mm, and the trapezoid extends to form a regular rectangle; a hole opening with the diameter of 2mm is reserved in the middle of the whole clamp and is used for steel fibers to pass through, bolt holes with the radius of 5mm are arranged on two sides of the clamp, and the number of the bolt holes is 10 in total and is used for fixing the clamp;
(3) after the steel fiber is subjected to primary rubber treatment, a third process is carried out; the process fixture is a chromium-vanadium alloy steel fixture, the front end of the fixture is a triangle-like shape, the width of the top end is 1.6mm, a right-angled triangle with an included angle of 30 degrees is formed downwards from the top end, and the height of the triangle is 20 mm; the front part of the rectangular plate extends to form a regular rectangle, and the rectangle is 161.6mm long and 100mm wide; a hole opening with the diameter of 1.6mm or 1.1mm is reserved in the middle of the whole clamp and used as a steel fiber passage hole, bolt holes with the radius of 5mm are arranged on two sides of the clamp, and the total number of the 6 bolt holes is used for fixing the clamp.
On the basis of a specific experiment, compared with the recycled steel fiber concrete without the surface rubber layer and the recycled steel fiber concrete with the surface rubber layer, the basic mechanical property of the untreated concrete is obviously inferior to that of the treated concrete.
Meanwhile, compared with the common plain concrete, the basic mechanical property strength value of the recycled steel fiber concrete with the processed surface rubber layer can be generally improved by fifteen percent or so.
The invention has the beneficial effects that: the invention strips the adhesive rubber layer on the surface of the steel fiber extracted from the tire through a series of processes, thereby leading the tire bead steel fiber to have better adhesive action with concrete when in engineering application. Through the treatment of the recycled steel fiber surface rubber, the axial compressive strength of the recycled straight steel fiber concrete is improved by fifteen percent, the splitting tensile strength is improved by twelve percent, and the shearing strength is improved by twenty-eight percent. The contrast of experimental data obviously discovers that the strength of the treated concrete is obviously improved, has obvious economic and practical values, and simultaneously greatly promotes the application of the recycled steel fiber in the field of civil engineering.
Drawings
Fig. 1 is a schematic view of a high-temperature resistance box structure used in this embodiment.
Fig. 2 is a front view of the steel fiber preliminary treatment jig in the present embodiment.
Fig. 3 is a side view of the steel fiber preliminary treatment jig in the present embodiment.
Fig. 4 is a plan view of the steel fiber preliminary treatment jig in the present embodiment.
Fig. 5 is a front view of the steel fiber fine processing jig in the present embodiment.
Fig. 6 is a side view of the steel fiber fine processing jig in the present embodiment.
Fig. 7 is a top view of the steel fiber fine processing jig in the present embodiment.
Detailed Description
The following description of specific embodiments of the present invention is provided in connection with examples to facilitate a better understanding of the present invention.
The method for treating the recycled steel fiber surface rubber layer in the embodiment comprises the following specific steps:
(1) an 80-degree high-temperature local treatment device is adopted for carrying out high-temperature treatment on the rubber on the surface of the steel fiber. The schematic diagram of the device is shown in fig. 1, a circular pore canal with the radius of 22mm is arranged in the middle of the device and is used for steel fibers to pass through the middle of the device, a thermal resistance wire 2 with the radius of 8mm is arranged on the periphery of the device and is used for locally heating the steel fibers, and the thermal resistance wire is embedded in a high-temperature resistant ceramic plate 1; the whole device is a high-temperature resistance box with the length of 300mm, the width of 200mm and the height of 200 mm.
(2) After the high temperature treatment, the steel fibers were passed through an autonomously designed chrome vanadium alloy steel jig, as shown in fig. 2, 3, 4, as a second treatment process for removing large rubber lumps on the surface of the recycled steel fibers. The size of the clamp is 202mm long, 240mm wide and 40mm high; the front section of the clamp is provided with a trapezoidal wedge opening, the upper bottom of the trapezoid is 22mm, the height of the trapezoid is 90mm, and the trapezoid extends to form a regular rectangle; a hole opening with the diameter of 2mm is reserved in the middle of the whole clamp and is used for steel fibers to pass through, bolt holes with the radius of 5mm are arranged on two sides of the clamp, and the number of the bolt holes is 10 in total and is used for fixing the clamp;
(3) after the preliminary rubber treatment of the steel fibers, the third process is performed. The process fixture is a chromium-vanadium alloy steel fixture which is designed independently, as shown in figures 5, 6 and 7, the front end of the fixture is a triangle-like shape, the width of the top end is 1.6mm, a right-angled triangle with two included angles of 30 degrees is formed downwards from the top end, and the height of the triangle is 20 mm. The rectangle extends forwards to form a regular rectangle, and the length of the rectangle is 161.6mm, and the width of the rectangle is 100 mm. The middle of the whole clamp is provided with a hole opening with the diameter of 1.6mm (if the diameter of the hole opening is 1.1mm due to the steel fiber with the diameter of 1.0 mm), the steel fiber passes through the hole channel, the two sides of the hole channel are bolt holes with the radius of 5mm, and the total number of the 6 bolt holes is used for fixing the clamp.
On the basis of a specific experiment, compared with the recycled steel fiber concrete without the surface rubber layer and the recycled steel fiber concrete with the surface rubber layer, the basic mechanical property of the untreated concrete is obviously inferior to that of the treated concrete.
Meanwhile, compared with the common plain concrete, the basic mechanical property strength value of the recycled steel fiber concrete with the processed surface rubber layer can be generally improved by fifteen percent or so.
Through the treatment of the recycled steel fiber surface rubber, the axial compressive strength of the recycled straight steel fiber concrete is improved by fifteen percent, the splitting tensile strength is improved by twelve percent, and the shearing strength is improved by twenty-eight percent. The contrast of experimental data obviously discovers that the strength of the treated concrete is obviously improved, has obvious economic and practical values, and simultaneously greatly promotes the application of the recycled steel fiber in the field of civil engineering.
Example 1:
recycled steel fibres are typically 1.5mm in diameter.
The method for treating the recycled steel fiber surface rubber layer in the embodiment comprises the following specific steps:
the first step is as follows: and (3) passing the steel fiber through a high-temperature resistance box to perform high-temperature treatment on the rubber on the surface of the steel fiber.
The second step is that: after high-temperature treatment, the steel fiber passes through a chromium-vanadium alloy steel fixture, and large rubber blocks on the surface of the recovered steel fiber are removed.
The third step: and after the steel fibers are subjected to primary rubber treatment, the steel fibers pass through a channel of a third grinding tool, the diameter of the channel opening is 1.6mm, and a smoother finished product of the recycled steel fibers with the diameter of 1.5mm is obtained through the step of treatment.
Example 2:
recycled steel fibres are typically 1.0mm in diameter.
The method for treating the recycled steel fiber surface rubber layer in the embodiment comprises the following specific steps:
the first step is as follows: and (3) passing the steel fiber through a high-temperature resistance box to perform high-temperature treatment on the rubber on the surface of the steel fiber.
The second step is that: after high-temperature treatment, the steel fiber passes through a chromium-vanadium alloy steel fixture, and large rubber blocks on the surface of the recovered steel fiber are removed.
The third step: and after the steel fiber is subjected to primary rubber treatment, the steel fiber passes through a channel of a third grinding tool, the diameter of the channel opening is 1.1mm, and a smoother finished product of the recycled steel fiber with the diameter of 1.0mm is obtained through the step of treatment. While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (1)
1. A method for processing a rubber layer on the surface of recycled steel fiber is characterized by comprising the following steps: firstly, carrying out local high-temperature treatment on the steel fiber, and reducing the bonding strength of rubber on the surface layer of the steel fiber and the toughness of the rubber through a round 80-DEG C high-temperature round pore passage so as to prepare for the early stage of subsequent stripping; then stripping off a large residual rubber block through a chromium-vanadium alloy steel pore clamp, so as to facilitate the fine treatment of the residual rubber; after the preliminary treatment of the step, the steel fiber is passed through a hole opening with the diameter of 1.5mm or 1.0mm, so that the thin rubber layer on the surface of the last layer of residual steel fiber is removed; the method comprises the following specific steps: (1) an 80-DEG C high-temperature local treatment device is adopted for carrying out high-temperature treatment on the rubber on the surface of the steel fiber; the middle of the device is a circular pore canal with the radius of 22mm, and the circular pore canal is used for the steel fiber to pass through the middle; the periphery of the steel fiber is provided with a thermal resistance wire 2 with the radius of 8mm, and the thermal resistance wire is used for locally heating the steel fiber; the thermal resistance wire is embedded in the high-temperature resistant ceramic plate; the whole device is a high-temperature resistance box with the length of 300mm, the width of 200mm and the height of 200 mm; (2) after high-temperature treatment, the steel fiber passes through a chromium-vanadium alloy steel clamp, and the clamp has the dimensions of 202mm in length, 240mm in width and 40mm in height; the front section of the clamp is provided with a trapezoidal wedge opening, the upper bottom of the trapezoid is 22mm, the height of the trapezoid is 90mm, and the trapezoid extends to form a regular rectangle; a hole opening with the diameter of 2mm is reserved in the middle of the whole clamp and is used for steel fibers to pass through, bolt holes with the radius of 5mm are arranged on two sides of the clamp, and the number of the bolt holes is 10 in total and is used for fixing the clamp; (3) after the steel fiber is subjected to primary rubber treatment, a third process is carried out; the process fixture is a chromium-vanadium alloy steel fixture, the front end of the fixture is a triangle-like shape, the width of the top end is 1.6mm, a right-angled triangle with an included angle of 30 degrees is formed downwards from the top end, and the height of the triangle is 20 mm; the front part of the rectangular plate extends to form a regular rectangle, and the rectangle is 161.6mm long and 100mm wide; a hole opening with the diameter of 1.6mm or 1.1mm is reserved in the middle of the whole clamp and used as a steel fiber passage hole, bolt holes with the radius of 5mm are arranged on two sides of the clamp, and the total number of the 6 bolt holes is used for fixing the clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711390789.6A CN109317497B (en) | 2017-12-21 | 2017-12-21 | Treatment method for recycled steel fiber surface rubber layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711390789.6A CN109317497B (en) | 2017-12-21 | 2017-12-21 | Treatment method for recycled steel fiber surface rubber layer |
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| Publication Number | Publication Date |
|---|---|
| CN109317497A CN109317497A (en) | 2019-02-12 |
| CN109317497B true CN109317497B (en) | 2021-12-24 |
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| CN201711390789.6A Expired - Fee Related CN109317497B (en) | 2017-12-21 | 2017-12-21 | Treatment method for recycled steel fiber surface rubber layer |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995029212A1 (en) * | 1994-04-25 | 1995-11-02 | Deveau Jean Francois | Recycling device with combination of unsorted industrial and/or domestic and/or urban wastes using two reversed thermoelectric converters |
| WO2011099887A1 (en) * | 2010-02-12 | 2011-08-18 | Kulikov Alexey Vladimirovich | Method for breaking up car and tractor tyres |
| CN102861763A (en) * | 2012-10-10 | 2013-01-09 | 梅胜旺 | Winding wire rubber separator |
| CN203578344U (en) * | 2013-11-15 | 2014-05-07 | 新疆金申管业有限公司 | Steel wire peeling device for waste steel wire gauge composite pipe |
| CN104550197A (en) * | 2014-12-28 | 2015-04-29 | 重庆市九龙橡胶制品制造有限公司 | Recovering and decomposing device for waste steel wire rope core conveying belt |
| CN105268719A (en) * | 2014-07-25 | 2016-01-27 | 天津市津靳农副产品专业合作社 | Method for extracting radial steel wires from waste tire |
| CN106363036A (en) * | 2015-07-23 | 2017-02-01 | 福特汽车公司 | Device for scraping debris from metal wire |
| CN107404087A (en) * | 2017-09-20 | 2017-11-28 | 国家电网公司 | A kind of transmission line of electricity removes foreign matter device |
-
2017
- 2017-12-21 CN CN201711390789.6A patent/CN109317497B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995029212A1 (en) * | 1994-04-25 | 1995-11-02 | Deveau Jean Francois | Recycling device with combination of unsorted industrial and/or domestic and/or urban wastes using two reversed thermoelectric converters |
| WO2011099887A1 (en) * | 2010-02-12 | 2011-08-18 | Kulikov Alexey Vladimirovich | Method for breaking up car and tractor tyres |
| CN102861763A (en) * | 2012-10-10 | 2013-01-09 | 梅胜旺 | Winding wire rubber separator |
| CN203578344U (en) * | 2013-11-15 | 2014-05-07 | 新疆金申管业有限公司 | Steel wire peeling device for waste steel wire gauge composite pipe |
| CN105268719A (en) * | 2014-07-25 | 2016-01-27 | 天津市津靳农副产品专业合作社 | Method for extracting radial steel wires from waste tire |
| CN104550197A (en) * | 2014-12-28 | 2015-04-29 | 重庆市九龙橡胶制品制造有限公司 | Recovering and decomposing device for waste steel wire rope core conveying belt |
| CN106363036A (en) * | 2015-07-23 | 2017-02-01 | 福特汽车公司 | Device for scraping debris from metal wire |
| CN107404087A (en) * | 2017-09-20 | 2017-11-28 | 国家电网公司 | A kind of transmission line of electricity removes foreign matter device |
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Granted publication date: 20211224 |