CN105568301B - A kind of acid pickling promotor for iron and steel and its application method without metallic element - Google Patents
A kind of acid pickling promotor for iron and steel and its application method without metallic element Download PDFInfo
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- CN105568301B CN105568301B CN201610023903.0A CN201610023903A CN105568301B CN 105568301 B CN105568301 B CN 105568301B CN 201610023903 A CN201610023903 A CN 201610023903A CN 105568301 B CN105568301 B CN 105568301B
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- 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
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention provides a kind of efficient acid pickling promotor for iron and steel without metallic element, it is made of reducing agent and surfactant, a small amount of accelerating agent is added in acid solution, with regard to pickling iron and steel speed can be greatly improved, or pickling temperature is reduced, so as to achieve the purpose that improve production capacity, reduce acid mist, energy-saving and emission-reduction.
Description
Technical field
The invention belongs to chemical method metals to clean field, and in particular to a kind of acid pickling promotor for iron and steel is primarily adapted for use in silicon
The pickling processes of steel.
Background technology
Steel rolling, quenching, annealing etc. heat treatment or other hot-working rear surfaces often generate one layer of oxide skin or
Person places in an atmosphere can also form layer oxide film for a period of time, and iron rust can be formed under the action of water and corrosive medium.This
A little oxide skins and the main component of iron rust are Fe2O3、Fe3O4, FeO etc..Silicon steel oxide skin particularly after hot rolling and heat treatment,
With general acid cleaning process, it is difficult to remove.If not removing these oxide skins and iron rust, technique can not just be further processed.
Except the method for descale mainly has physical method, chemical method and electrochemical method etc..Physical method mainly with
Rusty scale, such as sandblasting, shot-peening, polishing are removed by means of mechanical force, descaling process generates a large amount of dust, and abrasive material can not generally recycle,
Have an impact to other operations, environmental pollution is heavier.Electrochemical method is using less, the derusting with two aspects of physics and chemistry
Effect, has using two methods of direct current and alternating current.Chemical method is most widely used, and chemistry mainly occurs using acid and rusty scale
Reaction achievees the purpose that derusting, i.e. pickling.Most widely used in mordant is hydrochloric acid, is capable of the oxide of quick dissolved iron,
Work efficiency is high, and pickling rear surface is in good condition, and amount of hydrogen infiltration is few, and the Hydrogen Embrittlement of metal is small.Pickling is simple, fast with operating procedure
The advantages that degree is fast, derusting is thorough, at low cost, but material can be generated in itself with environment centainly influences, such as iron loss oozes hydrogen, acid
Mist, waste liquid etc..Therefore some auxiliary agents are added in pickle, can plays and accelerate pickling effect well.But this promotion
Agent contains metallic element mostly, and in the iron powder removal process of acid regeneration, metallic element is not easy to remove, and reduces iron powder product
Matter.Moreover, generating a large amount of precipitating sludge, pipeline is easily blocked.
Invention content
The object of the present invention is to provide a kind of efficient acid pickling promotor for iron and steel without metallic element.By a small amount of promotion
Agent is added in acid solution, and with regard to that can greatly improve pickling iron and steel speed or reduce pickling temperature, production capacity, reduction acid are improved so as to reach
Mist, the purpose of energy-saving and emission-reduction.
To achieve these goals, acid pickling promotor for iron and steel provided by the invention by reducing agent and surfactant group
Into.Reducing agent and surfactant are free of metallic element.
The constituent of reducing agent be the sulphite without metallic element, thiosulfate and ascorbic acid, specifically
Say it is ammonium sulfite, ammonium bisulfite, ATS (Ammonium thiosulphate), ascorbic acid, be made of, mix one kind therein or several or whole
Composition and division in a proportion example is unlimited.
The constituent of surfactant is the alkyl phenol polyoxyethylene ether without metallic element, polyethylene glycol, ethylene glycol,
It is made of one kind therein or several or whole, mixed proportion is unlimited.
The proportioning of reducing agent and surfactant is：Reducing agent accounts for the 1~100% of the total weight of acid pickling promotor, surface
Activating agent accounts for the 1% of the total weight of acid pickling promotor, and remainder is supplied with water.
The application method of acid pickling promotor for iron and steel provided by the invention is：It can add in acid solution and use at normal temperatures, also may be used
It is added in the acid solution of heating and uses, the definition of acid solution includes inorganic acid：Sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, hydrofluoric acid etc., it is organic
Acid：Acetic acid, citric acid etc..
Adding proportion of the acid pickling promotor for iron and steel provided by the invention in acid solution for acid solution total weight 0.05%~
3%.
Specific embodiment
The formula of 7 kinds of acid pickling promotor for iron and steel, but the formula that can actually use not office are provided in 1 following table 1 of embodiment
Be limited to it is following several, as long as meet invention content and claim is protection domain.
1 acid pickling promotor for iron and steel formula (by weight) of table
Occupation mode of the acid pickling promotor in acid solution, but range workable for reality are provided in 2 following table 2 of embodiment
Be not limited to it is following several, as long as meet invention content and claim is protection domain.
Addition manner (by weight percentage) of 2 acid pickling promotor of table in pickling formula
3 the following table 3 of embodiment shows the advantageous effect generated after the acid pickling promotor described in addition embodiment 1.
Table 3 adds the advantageous effect (being 1% by additive amount) after acid pickling promotor
| Strip speed m/min | Reduce acid consumption % | |
| It is not added with accelerating agent | 25 | 0 |
| Formula 1 | 35 | 30 |
| Formula 2 | 30 | 28 |
| Formula 3 | 32 | 33 |
| Formula 4 | 28 | 25 |
| Formula 5 | 30 | 20 |
| Formula 6 | 30 | 27 |
| Formula 7 | 33 | 35 |
4 the following table 4 of embodiment shows that the economic benefit of steel plant improves data using after acid pickling promotor.
Claims (3)
1. a kind of application method of acid pickling promotor for iron and steel, it is characterized in that, the accelerating agent by be free of metallic element reducing agent and
Surfactant forms, and the constituent of reducing agent is the ammonium sulfite without metallic element, ammonium bisulfite, thiosulfuric acid
Ammonium is specifically made of one kind therein or several or whole, and mixed proportion is unlimited；The constituent of surfactant
To be free of polyethylene glycol, the ethylene glycol of metallic element, it is made of one kind therein or several or whole, mixed proportion is unlimited；
Reducing agent accounts for 1 ~ 100 wt% of the total weight of acid pickling promotor, and surfactant accounts for the 1wt% of the total weight of acid pickling promotor, remains
Remaining part point is supplied with water；By above-mentioned acid pickling promotor, it is added in acid solution and uses；It adds in acid solution at normal temperatures and uses or add
It is added in the acid solution of heating and uses.
2. the method as described in claim 1, it is characterized in that, the acid solution includes inorganic acid：Sulfuric acid, hydrochloric acid, nitric acid, phosphorus
Acid, hydrofluoric acid, organic acid：Acetic acid, citric acid, wherein arbitrary proportioning composition.
3. the method as described in claim 1, it is characterized in that, adding proportion of the acid pickling promotor for iron and steel in acid solution is acid
The wt% of 0.05 wt% of liquid total weight ~ 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610023903.0A CN105568301B (en) | 2016-01-14 | 2016-01-14 | A kind of acid pickling promotor for iron and steel and its application method without metallic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610023903.0A CN105568301B (en) | 2016-01-14 | 2016-01-14 | A kind of acid pickling promotor for iron and steel and its application method without metallic element |
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| Publication Number | Publication Date |
|---|---|
| CN105568301A CN105568301A (en) | 2016-05-11 |
| CN105568301B true CN105568301B (en) | 2018-06-15 |
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| CN201610023903.0A Active CN105568301B (en) | 2016-01-14 | 2016-01-14 | A kind of acid pickling promotor for iron and steel and its application method without metallic element |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029352A (en) * | 2018-03-08 | 2019-07-19 | 叶涛 | A kind of environmentally friendly mordant and its application method of metallic article |
| CN111074206A (en) * | 2019-12-19 | 2020-04-28 | 大连德迈仕精密科技股份有限公司 | DLC coating falling off process method |
| CN112281167A (en) * | 2020-10-24 | 2021-01-29 | 上海今电实业有限公司 | Pickling solution for cleaning pipeline and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1408901A (en) * | 2001-09-29 | 2003-04-09 | 华中科技大学 | Acid pickling promotor for iron and steel |
| CN101492634A (en) * | 2009-02-18 | 2009-07-29 | 西安协力动力科技有限公司 | Organic composite detergent for heat power plant boiler |
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2016
- 2016-01-14 CN CN201610023903.0A patent/CN105568301B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1408901A (en) * | 2001-09-29 | 2003-04-09 | 华中科技大学 | Acid pickling promotor for iron and steel |
| CN101492634A (en) * | 2009-02-18 | 2009-07-29 | 西安协力动力科技有限公司 | Organic composite detergent for heat power plant boiler |
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| CN105568301A (en) | 2016-05-11 |
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