CN108517553A - A kind of pre-treating method of waste and old steel - Google Patents
A kind of pre-treating method of waste and old steel Download PDFInfo
- Publication number
- CN108517553A CN108517553A CN201810524390.0A CN201810524390A CN108517553A CN 108517553 A CN108517553 A CN 108517553A CN 201810524390 A CN201810524390 A CN 201810524390A CN 108517553 A CN108517553 A CN 108517553A
- Authority
- CN
- China
- Prior art keywords
- waste
- nylon membrane
- steel
- treating method
- old steel
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/04—Pickling; Descaling in solution
- C25F1/06—Iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B32B37/1009—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using vacuum and fluid pressure
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
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- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of pre-treating methods of waste and old steel comprising following procedure：Scrap steel is dipped in aqueous slkali, and it is connected with positive pole, it is electrochemically reacted, after the completion, it is rinsed using surfactant solution, thereafter it is rinsed and is dried with deionized water, the backward scrap steel surface covers nylon membrane and LDPE films successively, and the surfactant solution includes component lauric acid amide of ethanol, Cocoamidopropyl betaine, neopelex.Resource recovery can be improved in the present invention, reduces environmental pollution, and improves waste and old steel stability.
Description
Technical field
The present invention relates to the technical fields of scrap steel processing.
Background technology
Scrap iron and steel is a kind of important recyclable resources, essentially from iron and steel enterprise's production waste, industry and life
The steel scrap etc. of middle recycling.
In the prior art to scrap iron and steel by mainly in such a way that electric furnace steel making is re-refined, the existing skill in part
It is also recycled as the cold burden in pneumatic steelmaking in art.The cigarette of high zinc content can be all generated in both modes
Dirt influences environment, and can result in waste of resources if direct emission, if flue dust is recycled, but process is complicated, at
This is high, and yield is extremely low.
Invention content
It is an object of the invention to propose a kind of pre-treating method of waste and old steel, by first carrying out processing to scrap steel
Except the mode of coating, resource recovery is improved, is reduced environmental pollution.
Technical scheme is as follows：
A kind of pre-treating method of waste and old steel comprising following procedure：Scrap steel is dipped in aqueous slkali, and by itself and power supply
Anode is connected, and is electrochemically reacted, until after scrap steel overlay coating falls off, is drawn off, is rushed using surfactant solution
It washes, is rinsed and dried with deionized water thereafter, the backward scrap steel surface covers nylon membrane and LDPE films successively, in covering Buddhist nun
It is vacuumized during imperial film, nylon membrane is made to fit closely in steel surface, coat acrylate glue in nylon membrane thereafter, then
LDPE films are covered in acrylate glue, are compressed, until LDPE films fit in nylon membrane, the surfactant solution
It is composed of the following components：Lauric acid amide of ethanol, Cocoamidopropyl betaine, neopelex, ethyl alcohol, water.
Preferably：The aqueous slkali is sodium hydrate aqueous solution.
Further preferably：A concentration of 20 ~ 30wt% of the sodium hydroxide solution.
It is also preferred that：A concentration of 0.1 ~ 0.5wt% of the surfactant solution.
It is also preferred that：The mass ratio of ethyl alcohol and water is 1 in the surfactant solution:20~30.
The present invention can first be handled scrap steel, to remove and recycle the coating on its surface, can utmostly be improved
Without coating scrap steel surface cleanness, and no coating scrap steel and air etc. can substantially completely be isolated and contact, ensure it with pole
Strong chemical stability is aoxidized with preventing it, is corroded, can be greatly when thus obtained scrap steel is subsequently refined again
Steel-making energy consumption is reduced, steel-making efficiency is improved, reduces environmental pollution.
Specific implementation mode
Scrap steel processing is carried out in the following manner：
A kind of pre-treating method of waste and old steel comprising following procedure：Scrap steel is dipped in aqueous slkali, and by itself and power supply
Anode is connected, and is electrochemically reacted, until after scrap steel overlay coating falls off, is drawn off, is rushed using surfactant solution
It washes, is rinsed and dried with deionized water thereafter, the backward scrap steel surface covers nylon membrane and LDPE films successively, in covering Buddhist nun
It is vacuumized during imperial film, nylon membrane is made to fit closely in steel surface, coat acrylate glue in nylon membrane thereafter, then
LDPE films are covered in acrylate glue, are compressed, until LDPE films fit in nylon membrane, the surfactant solution
It is composed of the following components：Lauric acid amide of ethanol, Cocoamidopropyl betaine, neopelex, ethyl alcohol, water.
Preferably：The aqueous slkali is sodium hydrate aqueous solution.
Further preferably：A concentration of 20 ~ 30wt% of the sodium hydroxide solution.
It is also preferred that：A concentration of 0.1 ~ 0.5wt% of the surfactant solution.
It is also preferred that：The mass ratio of ethyl alcohol and water is 1 in the surfactant solution:20~30.
Claims (5)
1. a kind of pre-treating method of waste and old steel, it is characterised in that：Including following procedure：Scrap steel is dipped in aqueous slkali,
And it is connected with positive pole, it is electrochemically reacted, until after scrap steel overlay coating falls off, is drawn off, uses surface
Activator solution rinse, is rinsed and is dried with deionized water thereafter, backward the scrap steel surface cover successively nylon membrane and
LDPE films vacuumize during covering nylon membrane, nylon membrane are made to fit closely in steel surface, thereafter in nylon membrane
Acrylate glue is coated, then LDPE films are covered in acrylate glue, is compressed, until LDPE films fit in nylon membrane, institute
It is composed of the following components to state surfactant solution：Lauric acid amide of ethanol, Cocoamidopropyl betaine, detergent alkylate
Sodium sulfonate, ethyl alcohol, water.
2. the pre-treating method of waste and old steel according to claim 1, it is characterised in that：The aqueous slkali is sodium hydroxide
Aqueous solution.
3. the pre-treating method of waste and old steel according to claim 2, it is characterised in that：The sodium hydroxide solution it is dense
Degree is 20 ~ 30wt%.
4. the pre-treating method of waste and old steel according to claim 1, it is characterised in that：The surfactant solution
A concentration of 0.1 ~ 0.5wt%.
5. the pre-treating method of waste and old steel according to claim 1, it is characterised in that：In the surfactant solution
The mass ratio of ethyl alcohol and water is 1:20~30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810524390.0A CN108517553A (en) | 2018-05-28 | 2018-05-28 | A kind of pre-treating method of waste and old steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810524390.0A CN108517553A (en) | 2018-05-28 | 2018-05-28 | A kind of pre-treating method of waste and old steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108517553A true CN108517553A (en) | 2018-09-11 |
Family
ID=63427613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810524390.0A Withdrawn CN108517553A (en) | 2018-05-28 | 2018-05-28 | A kind of pre-treating method of waste and old steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108517553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108642556A (en) * | 2018-05-28 | 2018-10-12 | 成都兴天诚节能建材有限公司 | A kind of recovery and treatment method of scrap steel |
-
2018
- 2018-05-28 CN CN201810524390.0A patent/CN108517553A/en not_active Withdrawn
Non-Patent Citations (3)
| Title |
|---|
| 张允诚 胡如南: "《电镀手册 上册》", 31 July 2002, 国防工业出版社 * |
| 曾兆民: "《实用金属防锈》", 31 May 1989, 新时代出版社 * |
| 梁志杰: "《现代表面镀覆技术》", 31 January 2005, 国防工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108642556A (en) * | 2018-05-28 | 2018-10-12 | 成都兴天诚节能建材有限公司 | A kind of recovery and treatment method of scrap steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180911 |
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| WW01 | Invention patent application withdrawn after publication |