CN105316691B - Deashing agent and preparation method thereof - Google Patents
Deashing agent and preparation method thereof Download PDFInfo
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- CN105316691B CN105316691B CN201510881783.3A CN201510881783A CN105316691B CN 105316691 B CN105316691 B CN 105316691B CN 201510881783 A CN201510881783 A CN 201510881783A CN 105316691 B CN105316691 B CN 105316691B
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- nitric acid
- deashing agent
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- ash disposal
- acid
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Abstract
The invention discloses a kind of deashing agent and preparation method thereof, the deashing agent is mainly made up of nitric acid and ash disposal additive, and the ash disposal additive is made up of sulfuric acid, potassium permanganate, sodium fluoride and glacial acetic acid.The deashing agent selection nitric acid and ash disposal additive of the present invention is mixed by certain concentration proportioning, the dedusting process to different aluminium material surfaces can not only be met, also reduce the usage amount of nitric acid to a certain extent, and service life can be extended, cost is reduced, while reduces the pollution to environment.It is especially preferable to remained on surface removal effect after sealing of hole.
Description
Technical field
The present invention relates to a kind of chemical deashing agent.
Background technology
At present, the deashing agent commonly used in chemical industry has nitric acid and sulfuric acid, and general concentration of nitric acid is 230-300g/L, sulphur
Acid concentration is 90-150g/L.Sulfuric acid ash disposal is only applicable to 6063 aluminium alloys, and nitric acid is applied to the ash disposal of most aluminium alloys
Technique.Most chemical plant prefers to be used by the use of single nitric acid as deashing agent.
But single nitric acid, as deashing agent, service life is shorter, cost is high, and single nitric acid tank liquor concentration is general higher,
The NO compounds of volatilization not only bring harmful effect to human body, and pollution of its waste liquid to environment is also very big.Moreover, after nitric acid is to sealing of hole
Remained on surface removal ability is limited, and ash disposal is not clean, it is often necessary to and aided in using manual wipping, increase cost of labor burden, and
Harmful effect can be carried out to the health care belt for clearing up worker.It is badly in need of researching and developing a kind of efficient and environmentally friendly deashing agent.
The content of the invention
In order to overcome the limitation of single nitric acid deashing agent, the present invention provides one kind and is applied to various aluminium material surface dedusting process
, efficient and environmentally friendly deashing agent.
Technical scheme is used by the present invention solves the technical problem：A kind of deashing agent is provided, mainly by nitric acid and removed
Grey additive composition, the ash disposal additive are made up of sulfuric acid, potassium permanganate, sodium fluoride and glacial acetic acid.
Specifically, in the deashing agent per 1L, the concentration of nitric acid be 130~200g/L, the concentration of sulfuric acid is 20~
40g/L, the concentration of potassium permanganate is 15~40g/L, and the concentration of sodium fluoride is 5~20g/L, and the concentration of glacial acetic acid is 10~25g/
L。
Preferably, the solvent of deashing agent of the invention is water.
Another technical scheme is used by the present invention solves the technical problem：A kind of preparation method of deashing agent is provided,
Its step includes：
1) nitric acid, sulfuric acid and glacial acetic acid are added in water, makes its dissolving；
2) potassium permanganate and sodium fluoride of solid-state are dissolved with a small amount of water, it is then that the potassium permanganate after dissolving and sodium fluoride is molten
Liquid is added in solution made from step 1).
Compared with prior art, there is following good effect：The deashing agent selection nitric acid and ash disposal additive of the present invention is pressed
Certain concentration proportioning mixing, can not only meet the dedusting process to different aluminium material surfaces, also reduce nitre to a certain extent
The usage amount of acid, and service life can be extended, cost is reduced, while reduce the pollution to environment.It is especially residual to surface after sealing of hole
Stay removal effect preferable.
With reference to embodiment, the invention will be further described.
Embodiment
The deashing agent of the present invention, is mainly made up of, the ash disposal additive is by sulfuric acid, permanganic acid nitric acid and ash disposal additive
Potassium, sodium fluoride and glacial acetic acid form.
Wherein, by taking 1L deashing agent of the invention as an example, the concentration of nitric acid is 130~200g/L, and the concentration of sulfuric acid is 20
~40g/L, the concentration of potassium permanganate are 15~40g/L, and the concentration of sodium fluoride is 5~20g/L, the concentration of glacial acetic acid for 10~
25g/L.Solvent is water.
The deashing agent of the present invention, include the step of its preparation method：
1) nitric acid, sulfuric acid and glacial acetic acid are added in water, makes its dissolving；
2) potassium permanganate and sodium fluoride of solid-state are dissolved with a small amount of water, it is then that the potassium permanganate after dissolving and sodium fluoride is molten
Liquid is added in solution made from step 1), and finally plus water supplies solution, reaches prescribed concentration.
By taking 1L deashing agent of the invention as an example, the concentration of each component is represented.It is as shown in table 1 below.
Table 1
Wherein, in ash disposal additive, potassium permanganate is mainly the oxidisability for lifting sulfuric acid, and sodium fluoride is mainly removed in aluminium
Silicon, and glacial acetic acid and sulfuric acid are mainly used in adjusting the pH value of tank liquor, strengthen nitric acid reaction efficiency.
Ash disposal is exactly to remove product to remain in the black that the various metal compound particles of aluminium material surface are formed after alkaline etching
Loose film.In dedusting process, influence of each parameter to dedusting effect is also different.1. the higher dedusting effect of temperature is better, when
Between also can accordingly shorten, but temperature can not be too high, too high aluminium material surface to be caused to be corroded, and destroys oxidation membrane structure, temperature one
As control between 18-40 DEG C, general aluminium is at 20 degree or so, but aluminium more than silicone content and its alloy requirement temperature meeting
It is high, determine with specific reference to product.2. the ash disposal time, longer dedusting effect was better, the time general control of ash disposal 5 minutes it
Interior, the ash disposal time corrodes aluminium if long.This other deashing agent is in certain concentration range, and concentration is higher, dedusting effect
Better.Because F content is too high to be polluted to environment.
Preferably, ash disposal temperature is 18~40 DEG C, 1~5min of ash disposal time.
The dedusting effect of the present invention is tested below：
What it is by deashing agent made from embodiment 1 and prior art is that product using nitric acid as deashing agent compares merely.
1. to reach same dedusting effect, i.e. surface totally glossy sense, take identical aluminium through same alkaline etching groove,
Alkali cleaning 30s, ash disposal is carried out after same washing time, the ash disposal time is shown in Table 2, it is seen that embodiment 1 needs the time shorter.
| Medicament title | The ash disposal time |
| Single nitric acid (180g/L) | 90S |
| Embodiment 1 (180g/L) | 60S |
Table 2
2. contrasted with single nitric acid deashing agent
| Medicament title | Service life | Concentration of nitric acid scope | The sealing of hole residue removal time (identical product) |
| Single nitric acid | 70 days | 230-300g/L | 120S |
| Embodiment 1 | 90 days | 130g/L | 80S |
Table 3
From upper table 3, for single nitric acid deashing agent, nitric acid and nitre are greatly reduced using the deashing agent of the invention
The discharge of hydrochlorate.But the recovery processing technique of nitrate is more complicated, in general factory can not voluntarily be handled, even special
Waste water treatment plant, processing cost are also very high.Therefore, the cost of sewage disposal is not only reduced using the deashing agent, also by prolonging
Long service life reduces the usage amount of nitric acid, reduces unit consumption.
The invention is not limited in above-mentioned embodiment, if not departing from the present invention to the various changes or modifications of the present invention
Spirit and scope, if these changes and modification belong within the scope of the claim and equivalent technologies of the present invention, then this hair
It is bright to be also intended to comprising these changes and modification.
Claims (3)
- A kind of 1. deashing agent, it is characterised in that：Mainly be made up of nitric acid and ash disposal additive, the ash disposal additive by sulfuric acid, Potassium permanganate, sodium fluoride and glacial acetic acid form；In the deashing agent per 1L, the concentration of nitric acid is 130~200g/L, sulfuric acid Concentration is 20~40g/L, and the concentration of potassium permanganate is 15~40g/L, and the concentration of sodium fluoride is 5~20g/L, the concentration of glacial acetic acid For 10~25g/L.
- 2. deashing agent as claimed in claim 1, it is characterised in that：Its solvent is water.
- 3. prepare the method for deashing agent described in claim 1, it is characterised in that step is as follows：1) nitric acid, sulfuric acid and glacial acetic acid are added in water, makes its dissolving；2) potassium permanganate and sodium fluoride of solid-state are dissolved with a small amount of water, then adds the potassium permanganate after dissolving and Fluorinse Enter into solution made from step 1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510881783.3A CN105316691B (en) | 2015-12-03 | 2015-12-03 | Deashing agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881783.3A CN105316691B (en) | 2015-12-03 | 2015-12-03 | Deashing agent and preparation method thereof |
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| Publication Number | Publication Date |
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| CN105316691A CN105316691A (en) | 2016-02-10 |
| CN105316691B true CN105316691B (en) | 2018-02-13 |
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| CN201510881783.3A Active CN105316691B (en) | 2015-12-03 | 2015-12-03 | Deashing agent and preparation method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107326371A (en) * | 2017-05-26 | 2017-11-07 | 黄山金瑞泰科技股份有限公司 | CTP plates ash disposal processing deashing agent and its process for deashing |
| CN109402702B (en) * | 2018-10-17 | 2020-12-11 | 佛山市南海双成金属表面技术有限公司 | Dedusting agent used after aluminum alloy anodic oxidation process sealing and preparation method thereof |
| CN109536970A (en) * | 2019-01-18 | 2019-03-29 | 惠州市至德精密部件有限公司 | A kind of aluminium and aluminum alloy surface pretreatment neutralizer and preparation method thereof |
| CN114000155B (en) * | 2021-09-26 | 2023-09-12 | 西北大学 | General aluminum and alloy environment-friendly ash remover thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU823413A1 (en) * | 1979-07-09 | 1981-04-23 | Предприятие П/Я В-8173 | Solution for scale removal from surface of metallic articles |
| CN101285196A (en) * | 2008-05-30 | 2008-10-15 | 重庆钢铁(集团)有限责任公司 | Processing technology for surface oxide skin of aviation tubes |
| CN101758048A (en) * | 2009-11-17 | 2010-06-30 | 瓮福（集团）有限责任公司 | Method for cleaning and descaling phosphoric acid storage tank |
-
2015
- 2015-12-03 CN CN201510881783.3A patent/CN105316691B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU823413A1 (en) * | 1979-07-09 | 1981-04-23 | Предприятие П/Я В-8173 | Solution for scale removal from surface of metallic articles |
| CN101285196A (en) * | 2008-05-30 | 2008-10-15 | 重庆钢铁(集团)有限责任公司 | Processing technology for surface oxide skin of aviation tubes |
| CN101758048A (en) * | 2009-11-17 | 2010-06-30 | 瓮福（集团）有限责任公司 | Method for cleaning and descaling phosphoric acid storage tank |
Non-Patent Citations (1)
| Title |
|---|
| 铝合金阳极氧化的除灰工艺;尹小三 等;《电镀与环保》;20090331;第29卷(第2期);22-24 * |
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