CN105568301A - Steel acid pickling accelerant not containing metal elements and application method of steel acid pickling accelerant - Google Patents
Steel acid pickling accelerant not containing metal elements and application method of steel acid pickling accelerant Download PDFInfo
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- CN105568301A CN105568301A CN201610023903.0A CN201610023903A CN105568301A CN 105568301 A CN105568301 A CN 105568301A CN 201610023903 A CN201610023903 A CN 201610023903A CN 105568301 A CN105568301 A CN 105568301A
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- Prior art keywords
- acid
- acid pickling
- steel
- promotor
- iron
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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
Abstract
The invention provides an efficient steel acid pickling accelerant not containing metal elements. The steel acid pickling accelerant is composed of a reducing agent and a surface active agent. The steel acid pickling speed can be greatly increased or the acid pickling temperature can be reduced as long as a small number of accelerants are added, and therefore the purposes of improving productivity, reducing acid mist, saving energy and reducing emission are achieved.
Description
Technical field
The invention belongs to chemical method metal cleaning field, be specifically related to a kind of acid pickling promotor for iron and steel, be mainly applicable to the cleanup acid treatment of silicon steel.
Background technology
Iron and steel often generates one deck oxide skin in the thermal treatments such as rolling, quenching, annealing or other hot-work rear surfaces, or places for some time in an atmosphere and also can form layer oxide film, can form iron rust under the effect of water and corrosive medium.The main component of these oxide skins and iron rust is Fe
2o
3, Fe
3o
4, FeO etc.Silicon steel oxide skin particularly after hot rolling and thermal treatment, with general acid cleaning process, is difficult to remove.If do not remove these oxide skins and iron rust, just cannot be for further processing technique.
Method except descaling mainly contains physical method, chemical process and electrochemical method etc.Physical method mainly relies on mechanical force to peel off rusty scale, and as sandblasting, shot-peening, polishing etc., descaling process produces a large amount of dust, and abrasive material generally cannot reclaim, and has impact to other operations, and environmental pollution is heavier.Electrochemical method application is less, has the derusting action of physics and chemistry two aspects, has and adopts direct current and alternating-current two kinds of methods.Chemical process is most widely used, mainly utilizes acid and rusty scale generation chemical reaction to reach the object of rust cleaning, i.e. pickling.Most widely used in pickling agent is hydrochloric acid, can the oxide compound of rapid solution iron, and 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 little.Pickling has that operating procedure is simple, speed is fast, rust cleaning thoroughly, low cost and other advantages, but to material itself and environment generation certain influence, as iron loss, hydrogen, acid mist, waste liquid etc. can be oozed.Therefore in pickle solution, add some auxiliary agents, can play and well accelerate pickling effect.But this promotor, mostly containing metallic element, in the iron powder removal process of acid regeneration, metallic element is not easy to remove, and reduces iron powder quality.And, produce a large amount of precipitating sludges, easy blocking pipe.
Summary of the invention
The object of this invention is to provide a kind of efficient acid pickling promotor for iron and steel of not containing metal element.This small amount of promotor is added in acid solution, just can significantly improve pickling iron and steel speed, or reduce pickling temperature, thus reach the object improving production capacity, reduce acid mist, energy-saving and emission-reduction.
To achieve these goals, being made up of reductive agent and tensio-active agent of acid pickling promotor for iron and steel provided by the invention.Reductive agent and tensio-active agent all not containing metal elements.
The moiety of reductive agent is the sulphite of not containing metal element, thiosulphate and xitix, ammonium sulphite, ammonium bisulfite, ammonium thiosulfate, xitix specifically, by one wherein, or several, or all form, blending ratio is not limit.
The moiety of tensio-active agent is alkylphenol polyoxyethylene, polyoxyethylene glycol, the ethylene glycol of not containing metal element, by one wherein, or several, or all form, blending ratio is not limit.
The proportioning of reductive agent and tensio-active agent is: reductive agent accounts for 1 ~ 100% of the gross weight of acid pickling promotor, and tensio-active agent accounts for 1% of the gross weight of acid pickling promotor, and remainder water is supplied.
The using method of acid pickling promotor for iron and steel provided by the invention is: can add in acid solution at normal temperatures and use, also can add in the acid solution of heating and use, the definition of acid solution comprises mineral acid: sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, hydrofluoric acid etc., organic acid: acetic acid, citric acid etc.
The adding proportion of acid pickling promotor for iron and steel provided by the invention in acid solution is 0.05% ~ 3% of acid solution gross weight.
Embodiment
Embodiment 1 is to provide the formula of 7 kinds of acid pickling promotor for iron and steel in following table 1, but actual operable formula is not limited to following several, if meet summary of the invention and claim be protection domain.
Table 1 acid pickling promotor for iron and steel formula (by weight)
Embodiment 2 is to provide the use-pattern of acid pickling promotor in acid solution in following table 2, but actual spendable scope is not limited to following several, if meet summary of the invention and claim be protection domain.
The addition manner (by weight percentage) of table 2 acid pickling promotor in pickling formula
The beneficial effect that embodiment 3 following table 3 produces after showing and adding the acid pickling promotor described in embodiment 1.
Beneficial effect (being 1% by addition) after table 3 adds acid pickling promotor
| Strip speed m/min | Reduce acid consumption % | |
| Do not add promotor | 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 |
After embodiment 4 following table 4 shows and adopts acid pickling promotor, the economic benefit of Steel Plant improves data.
Claims (8)
1. an acid pickling promotor for iron and steel formula, is characterized by, and this promotor is made up of reductive agent and tensio-active agent.
2. fill a prescription as claimed in claim 1, it is characterized by, reductive agent and tensio-active agent all not containing metal elements.
3. fill a prescription as claimed in claim 1, it is characterized by, the moiety of reductive agent is the sulphite of not containing metal element, thiosulphate and xitix, ammonium sulphite, ammonium bisulfite, ammonium thiosulfate, xitix specifically, by one wherein, or several, or all form, blending ratio is not limit.
4. fill a prescription as claimed in claim 1, it is characterized by, the moiety of tensio-active agent is alkylphenol polyoxyethylene, polyoxyethylene glycol, the ethylene glycol of not containing metal element, by one wherein, or several, or all form, blending ratio is not limit.
5. fill a prescription as claimed in claim 1, it is characterized by, the proportioning of reductive agent and tensio-active agent is: reductive agent accounts for 1 ~ 100% of the gross weight of acid pickling promotor, and tensio-active agent accounts for 1% of the gross weight of acid pickling promotor, and remainder water is supplied.
6. a using method for acid pickling promotor for iron and steel, is characterized by, and by acid pickling promotor for iron and steel according to claim 1, joins in acid solution and uses; Can add in acid solution at normal temperatures and use, also can add in the acid solution of heating and use.
7. method as claimed in claim 6, it is characterized by, described acid solution comprises mineral acid: sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, hydrofluoric acid etc., organic acid: acetic acid, citric acid etc., and wherein proportioning forms arbitrarily.
8. method as claimed in claim 6, it is characterized by, the adding proportion of acid pickling promotor for iron and steel provided by the invention in acid solution is 0.05% ~ 3% of acid solution gross weight.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105568301A true CN105568301A (en) | 2016-05-11 |
| CN105568301B 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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Cited By (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 |
-
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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105568301B (en) | 2018-06-15 |
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