CN114438566B - Aluminum product anodic oxidation liquid and use method thereof - Google Patents
Aluminum product anodic oxidation liquid and use method thereof Download PDFInfo
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- CN114438566B CN114438566B CN202210258706.2A CN202210258706A CN114438566B CN 114438566 B CN114438566 B CN 114438566B CN 202210258706 A CN202210258706 A CN 202210258706A CN 114438566 B CN114438566 B CN 114438566B
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- 230000003647 oxidation Effects 0.000 title claims abstract description 224
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 224
- 239000007788 liquid Substances 0.000 title claims abstract description 161
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 121
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 60
- 239000000654 additive Substances 0.000 claims abstract description 52
- 239000002608 ionic liquid Substances 0.000 claims abstract description 51
- 230000000996 additive effect Effects 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000005725 8-Hydroxyquinoline Substances 0.000 claims abstract description 16
- 229960003540 oxyquinoline Drugs 0.000 claims abstract description 16
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 claims abstract description 16
- 150000007524 organic acids Chemical class 0.000 claims abstract description 10
- 150000001768 cations Chemical class 0.000 claims abstract description 6
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 6
- 238000004440 column chromatography Methods 0.000 claims description 36
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 27
- 238000011084 recovery Methods 0.000 claims description 23
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- -1 sulfate radical Chemical class 0.000 claims description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 238000004064 recycling Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 11
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 9
- 235000015165 citric acid Nutrition 0.000 claims description 9
- 239000003456 ion exchange resin Substances 0.000 claims description 9
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 9
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 7
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000001630 malic acid Substances 0.000 claims description 7
- 235000011090 malic acid Nutrition 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 4
- UWJJYHHHVWZFEP-UHFFFAOYSA-N pentane-1,1-diol Chemical compound CCCCC(O)O UWJJYHHHVWZFEP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052698 phosphorus Chemical group 0.000 claims description 4
- 239000011574 phosphorus Chemical group 0.000 claims description 4
- 235000002906 tartaric acid Nutrition 0.000 claims description 4
- 239000011975 tartaric acid Substances 0.000 claims description 4
- 150000001450 anions Chemical class 0.000 claims description 3
- 235000010323 ascorbic acid Nutrition 0.000 claims description 3
- 239000011668 ascorbic acid Substances 0.000 claims description 3
- 229960005070 ascorbic acid Drugs 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-O Imidazolium Chemical compound C1=C[NH+]=CN1 RAXXELZNTBOGNW-UHFFFAOYSA-O 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 239000010407 anodic oxide Substances 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- 239000004310 lactic acid Substances 0.000 claims description 2
- 235000014655 lactic acid Nutrition 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-O phosphonium Chemical group [PH4+] XYFCBTPGUUZFHI-UHFFFAOYSA-O 0.000 claims description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- 238000007743 anodising Methods 0.000 claims 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- YPJKMVATUPSWOH-UHFFFAOYSA-N nitrooxidanyl Chemical compound [O][N+]([O-])=O YPJKMVATUPSWOH-UHFFFAOYSA-N 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002253 acid Substances 0.000 abstract description 6
- 230000001590 oxidative effect Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 229910052736 halogen Inorganic materials 0.000 abstract description 5
- 150000002367 halogens Chemical class 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 abstract description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003595 mist Substances 0.000 abstract description 2
- 150000005837 radical ions Chemical class 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 33
- 230000001105 regulatory effect Effects 0.000 description 20
- 239000002699 waste material Substances 0.000 description 14
- 239000003792 electrolyte Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 10
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- KLRWOUZEYNJFEP-QRPNPIFTSA-N (2s)-2-amino-3-phenylpropanoic acid;sulfuric acid Chemical compound OS(O)(=O)=O.OC(=O)[C@@H](N)CC1=CC=CC=C1 KLRWOUZEYNJFEP-QRPNPIFTSA-N 0.000 description 1
- VKIGAWAEXPTIOL-UHFFFAOYSA-N 2-hydroxyhexanenitrile Chemical compound CCCCC(O)C#N VKIGAWAEXPTIOL-UHFFFAOYSA-N 0.000 description 1
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- UOKRBSXOBUKDGE-UHFFFAOYSA-N butylphosphonic acid Chemical compound CCCCP(O)(O)=O UOKRBSXOBUKDGE-UHFFFAOYSA-N 0.000 description 1
- MSZSGKIGWIVVOP-UHFFFAOYSA-N carboxymethylazanium;hydrogen sulfate Chemical compound NCC(O)=O.OS(O)(=O)=O MSZSGKIGWIVVOP-UHFFFAOYSA-N 0.000 description 1
- GQLRFPJNVQIFPK-UHFFFAOYSA-N dihydrogen phosphate;3-methyl-1h-imidazol-3-ium Chemical compound OP(O)(O)=O.CN1C=CN=C1 GQLRFPJNVQIFPK-UHFFFAOYSA-N 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- WMRZUOUHCDNJCL-UHFFFAOYSA-N hydrogen sulfate;2-(3-methyl-1,2-dihydroimidazol-1-ium-1-yl)acetic acid Chemical compound OS([O-])(=O)=O.CN1C[NH+](CC(O)=O)C=C1 WMRZUOUHCDNJCL-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/06—Filtering particles other than ions
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/16—Regeneration of process solutions
- C25D21/18—Regeneration of process solutions of electrolytes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses an aluminum product anodic oxidation liquid and a use method thereof, wherein the aluminum product anodic oxidation liquid is prepared by mixing halogen-free ionic liquid, an additive and water, and the use method comprises the following steps: firstly preparing an anodic oxidation liquid, then carrying out anodic oxidation treatment on the aluminum material to be oxidized, and finally recovering the used anodic oxidation liquid; the invention uses halogen-free ionic liquid to replace traditional sulfuric acid, chromic acid and the like, has no corrosion to equipment, has no acid mist and no peculiar smell in the use process of the oxidizing liquid, can realize the anodic oxidation of the aluminum material under the condition of being far lower than the acidity of the traditional anodic oxidizing liquid, has no halogen pollution in the production process, and has the synergistic effect of cations and acid radical ions of the ionic liquid under the anodic oxidation condition, and the additives such as polyalcohol, 8-hydroxyquinoline, organic acid and the like are added, so that the anodic oxidizing liquid can obtain the oxidation effect superior to that of the traditional high-acid system, and the anodic oxidizing liquid for the aluminum material can be recycled after being used, thereby reducing the oxidation cost.
Description
Technical Field
The invention relates to the technical field of oxidizing liquid, in particular to an aluminum anodic oxidizing liquid and a use method thereof.
Background
Pure aluminum and aluminum alloy materials have higher strength/weight ratio, excellent physical and chemical properties and easy processing and forming, become second largest metal materials which are inferior to steel in industry, but the pure aluminum and aluminum alloy materials have poorer corrosion resistance and wear resistance, lower hardness and easy abrasion corrosion, so that the durability and the safety of the pure aluminum and aluminum alloy materials as structural materials are greatly influenced, although aluminum is extremely easy to react with oxygen in the air to generate a compact oxide film, the thickness of the aluminum film is limited, the aluminum film is difficult to further protect the aluminum material, and an anodic oxidation method is generally adopted in industry to obtain an aluminum oxide film with a certain thickness on the surface of the aluminum material, so that the wear resistance and the corrosion resistance of the aluminum material are remarkably improved and the aluminum material is favorable for further dyeing of the aluminum material.
The existing anodic oxidation processes, such as phosphoric acid anodic oxidation process, oxalic acid anodic oxidation process, chromic acid anodic oxidation process, sulfuric acid anodic oxidation process and the like, are the most commonly used processes at present, wherein the anodic oxidation electrolyte used in the process is generally composed of 15-20% sulfuric acid aqueous solution and other additives, the concentration of aluminum ions in the electrolyte is increased and the acidity is weakened along with the progress of anodic oxidation, the anodic oxidation effect is seriously weakened, new anodic oxidation electrolyte is needed to replace at the moment, and waste liquid is generated along with the new anodic oxidation electrolyte, and the waste liquid has the problems of high acidity, high concentration, toxic metal ions and high treatment cost and great difficulty.
The prior patent with publication number CN108221023A discloses an aluminum alloy anodic oxidation process, which adopts high-concentration sulfuric acid, and the concentration of aluminum ions in electrolyte is increased along with the progress of anodic oxidation, so that the acidity is weakened, and the anodic oxidation effect is seriously weakened. At this time, a new anodic oxidation electrolyte is needed to replace, and a large amount of strongly acidic waste liquid is generated, so that the waste liquid is strong in acidity, high in aluminum ion concentration, high in environmental impact, high in treatment cost and high in recovery difficulty, and belongs to a technology which does not meet the current environmental protection process requirements.
In another patent, the publication number CN104532322B is "a method for anodic oxidation of titanium-aluminum alloy in ionic liquid", which uses pure ionic liquid as electrolyte, because the ionic liquid has high viscosity and low mass transfer rate, the system resistance is high, the voltage is high, the growth speed of oxide film is reduced, the electricity consumption in the production process is greatly improved, the pure ionic liquid has large usage amount and too high cost, in addition, the ionic liquid containing halogen can generate halogen simple substance in the production process, serious threat to personnel health and environment is caused, meanwhile, the imperfect treatment of halogen-containing wastewater can affect the environment and underground water, and the technology is applicable to titanium-aluminum alloy, and can not be expanded to conventional 1-8 series aluminum alloy, therefore, the invention provides an aluminum anodic oxidation liquid and a use method thereof to solve the problems in the prior art.
Disclosure of Invention
The invention aims to solve the problem that the conventional anodic oxidation liquid cannot be recycled to cause a large amount of strongly acidic wastewater.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: an anodic oxidation liquid for aluminum comprises 0.5-10% of halogen-free ionic liquid, 0.1-2% of additive and the balance of water, wherein the halogen-free ionic liquid is a halogen-free ionic liquid with Bronsted acidity, the additive is 8-hydroxyquinoline, polyalcohol and organic acid, and the molecular formula of the halogen-free ionic liquid is [ R-A ]]m[X]wherein-A= -H, -SO 3 H、-COOH、-PO 3 H 2 ，[X]For the halogen-free oxyacid anions, m=1 to 3, r is a nitrogen-or phosphorus-containing cation.
The further improvement is that: the halogen-free oxyacid anion is selected from one or more of sulfate, phosphate, oxalate, acetate, sulfonate and nitrate.
The further improvement is that: the nitrogen-or phosphorus-containing cation is selected from the group consisting of one or more of a quaternary ammonium cation, a quaternary phosphonium cation, an imidazolium cation, a pyrrolidinium cation, and an amino acid cation.
The further improvement is that: the additive comprises 20-50% of polyol, 30-50% of organic acid and the balance of 8-hydroxyquinoline, wherein the polyol is fatty alcohol with hydroxyl, and is selected from one or more of glycol, diethylene glycol, glycerol, pentanediol, diethylene glycol and polyethylene glycol.
The further improvement is that: the organic acid is hydroxyl-containing organic acid, and is selected from one or more of tartaric acid, citric acid, malic acid, ascorbic acid and lactic acid.
The application method of the aluminum product anodic oxidation liquid comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxide film layer on the surface, and completing anodic oxidation work;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: filtering the used anodic oxidation liquid, concentrating the filtered anodic oxidation liquid, carrying out column chromatography on the concentrated anodic oxidation liquid, eluting the anodic oxidation liquid after column chromatography, carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment.
The further improvement is that: in the first step, the anodic oxidation current density is 0.1-8A/dm 2 The temperature is-20-70 ℃.
The further improvement is that: in the second step, the filler used in the column chromatography treatment process is one or a combination of more of alumina, silica gel, diatomite, active carbon and ion exchange resin.
The beneficial effects of the invention are as follows: the invention uses halogen-free ionic liquid to replace traditional sulfuric acid, chromic acid and the like, greatly reduces the acidity of electrolyte, reduces the danger of an anodic oxidation process and the equipment corrosion rate of anodic oxidation equipment, has no acid mist and no peculiar smell in the use process of the electrolyte, can realize the anodic oxidation of aluminum materials under the condition of being far lower than the acidity of the traditional anodic oxidation liquid, greatly reduces the concentration of the ionic liquid in the electrolyte, simultaneously improves the anodic oxidation efficiency, reduces the energy consumption, has no halogen pollution in the production process, and ensures that the cations of the ionic liquid and acid radical ions are in synergistic effect under the anodic oxidation condition, and the additives such as polyalcohol, 8-hydroxyquinoline, organic acid and the like, so that the anodic oxidation liquid can obtain the oxidation effect superior to the traditional high-acid system.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a flow chart of a method of use of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 10% of 1-methyl-3-carboxymethyl imidazole bisulfate, 2% of an additive and the balance of water, wherein the additive contains 20% of polyethylene glycol, 50% of citric acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 0.1A/dm 2 Temperature (temperature)The temperature is-5 ℃, the components and the concentration of the ionic liquid are regulated through different proportions of the halogen-free ionic liquid, the additive and the water, the thickness, the hardness, the glossiness and other performances of the oxide film are directionally regulated and controlled, and the complete alumina film with uniform growth, compact and uniform holes, higher hardness and good wear resistance can be obtained;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering the used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 50% silica gel and 50% ion exchange resin, and the filler can be circularly used for aluminum anodic oxidation by carrying out recovery treatment on the anodic oxidation liquid, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
Example 2
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 8% of 1-methyl-3-propanesulfonyl imidazole bisulfate, 1.8% of an additive and the balance of water, wherein the additive contains 40% of ethylene glycol, 40% of tartaric acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 1.1A/dm 2 The temperature is 70 ℃, the components and the concentration of the ionic liquid are regulated by different proportions of the halogen-free ionic liquid, the additive and the water, and the performances of thickness, hardness, glossiness and the like of the oxide film can be directionally regulated and controlledObtaining a complete alumina film with uniform grown holes, compactness and uniformity, higher hardness and good wear resistance;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering the used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 50% diatomite and 50% ion exchange resin, and the filler can be recycled for aluminum anodic oxidation by carrying out recovery treatment on the anodic oxidation liquid, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
Example 3
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 6% of 1-methylimidazole phosphate monobasic, 1.3% of an additive and the balance of water, wherein the additive contains 30% of glycerol, 50% of malic acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 1.3A/dm 2 The temperature is 11 ℃, the components and the concentration of the ionic liquid are regulated through different proportions of the halogen-free ionic liquid, the additive and the water, the thickness, the hardness, the glossiness and other performances of the oxide film are directionally regulated and controlled, and the complete alumina film with uniform growth, compact and uniform holes, higher hardness and good wear resistance can be obtained;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering the used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 50% diatomite, 5% activated carbon and 45% ion exchange resin, and the filler can be circularly used for anodic oxidation of aluminum materials through recovery treatment on the anodic oxidation liquid, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
Example 4
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 4.5% of N-carboxyethyl trimethylammonium phosphate monobasic salt, 1.4% of additive and the balance of water, wherein the additive contains 20% of diethylene glycol, 50% of citric acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 2A/dm 2 The temperature is 25 ℃, the components and the concentration of the ionic liquid are regulated through different proportions of the halogen-free ionic liquid, the additive and the water, the thickness, the hardness, the glossiness and other performances of the oxide film are directionally regulated and controlled, and the complete alumina film with uniform growth, compact and uniform holes, higher hardness and good wear resistance can be obtained;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering the used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 35% of active carbon and 65% of ion exchange resin, and the filler can be circularly used for aluminum anodic oxidation by carrying out recovery treatment on the anodic oxidation liquid, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
Example 5
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 4% of N-butyl phosphonic acid trimethylammonium bisulfate, 1% of an additive and the balance of water, wherein the additive contains 20% of pentanediol, 40% of ascorbic acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 3.5A/dm 2 The temperature is 32 ℃, the components and the concentration of the ionic liquid are regulated through different proportions of the halogen-free ionic liquid, the additive and the water, the thickness, the hardness, the glossiness and other performances of the oxide film are directionally regulated and controlled, and the complete alumina film with uniform growth, compact and uniform holes, higher hardness and good wear resistance can be obtained;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 40% silica gel, 30% diatomite and 30% active carbon, and the anodic oxidation liquid can be recycled for aluminum anodic oxidation by recovery treatment, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
Example 6
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 8% of tripropyl phosphonium nitrate, 0.5% of additive and the balance of water, wherein the additive contains 25% of diethylene glycol, 30% of citric acid, 18% of malic acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 1.5A/dm 2 The temperature is 30 ℃, the components and the concentration of the ionic liquid are regulated through different proportions of the halogen-free ionic liquid, the additive and the water, the thickness, the hardness, the glossiness and other performances of the oxide film are directionally regulated and controlled, and the complete alumina film with uniform growth, compact and uniform holes, higher hardness and good wear resistance can be obtained;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering the used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 65% of alumina and 35% of ion exchange resin, and the filler can be circularly used for aluminum anodic oxidation by carrying out recovery treatment on the anodic oxidation liquid, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
Example 7
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 3% of N-carboxymethyl pyridine hydrogen oxalate, 0.5% of triethylammonium acetate, 1.2% of additive and the balance of water, wherein the additive contains 20% of pentanediol, 20% of malic acid, 15% of citric acid, 15% of tartaric acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 4A/dm 2 The temperature is 10 ℃, the components and the concentration of the ionic liquid are regulated through different proportions of the halogen-free ionic liquid, the additive and the water, the thickness, the hardness, the glossiness and other performances of the oxide film are directionally regulated and controlled, and the complete alumina film with uniform growth, compact and uniform holes, higher hardness and good wear resistance can be obtained;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering the used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 70% of alumina and 30% of activated carbon, and the filler can be circularly used for aluminum anodic oxidation by carrying out recovery treatment on the anodic oxidation liquid, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
Example 8
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 2.5% of N-methyl-N-sulfoimidazole mesylate, 1.5% of additive and the balance of water, wherein the additive contains 20% of polyethylene glycol, 30% of malic acid, 20% of citric acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 6A/dm 2 The temperature is 20 ℃, the components and the concentration of the ionic liquid are regulated through different proportions of the halogen-free ionic liquid, the additive and the water, the thickness, the hardness, the glossiness and other performances of the oxide film are directionally regulated and controlled, and the complete alumina film with uniform growth, compact and uniform holes, higher hardness and good wear resistance can be obtained;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 35% silica gel, 40% active carbon and 25% ion exchange resin, and the method can be circularly used for anodic oxidation of aluminum materials by carrying out recovery treatment on the anodic oxidation liquid, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
Example 9
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 1% of glycine bisulfate, 0.3% of additive and the balance of water, wherein the additive contains 25% of ethylene glycol, 24% of glycerol, 20% of citric acid, 10% of malic acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 7A/dm 2 The temperature is 30 ℃, the components and the concentration of the ionic liquid are regulated through different proportions of the halogen-free ionic liquid, the additive and the water, the thickness, the hardness, the glossiness and other performances of the oxide film are directionally regulated and controlled, and the complete alumina film with uniform growth, compact and uniform holes, higher hardness and good wear resistance can be obtained;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 25% silica gel, 25% active carbon and 50% ion exchange resin, and the filler can be circularly used for anodic oxidation of aluminum materials through recovery treatment on the anodic oxidation liquid, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
Example 10
The embodiment provides an aluminum product anodic oxidation liquid which is prepared from the following raw materials in percentage by mass: 0.5% of phenylalanine bisulfate, 0.1% of additive and the balance of water, wherein the additive contains 20% of polyethylene glycol, 20% of diethylene glycol, 40% of citric acid and the balance of 8-hydroxyquinoline.
Referring to fig. 1, the embodiment also provides a use method of the aluminum product anodized solution, which comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxidation film layer on the surface, and completing anodic oxidation work, wherein the anodic oxidation current density is 8A/dm 2 The temperature is-20 ℃, the components and the concentration of the ionic liquid are regulated through different proportions of the halogen-free ionic liquid, the additive and the water, the thickness, the hardness, the glossiness and other performances of the oxide film are directionally regulated and controlled, and the complete alumina film with uniform growth, compact and uniform holes, higher hardness and good wear resistance can be obtained;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: the method comprises the steps of firstly filtering used anodic oxidation liquid, then concentrating the filtered anodic oxidation liquid, then carrying out column chromatography on the concentrated anodic oxidation liquid, then eluting the anodic oxidation liquid after column chromatography, then carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment, wherein the filler used in the column chromatography treatment process is 25% silica gel, 30% diatomite and 45% active carbon, and the filler can be circularly used for anodic oxidation of aluminum materials through recovery treatment on the anodic oxidation liquid, so that the output of waste liquid is greatly reduced, and meanwhile, the use cost of the oxidation liquid is reduced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (5)
1. An aluminum anodic oxidation liquid, which is characterized in thatThe method comprises the following steps: comprises 0.5-10% of halogen-free ionic liquid, 0.1-2% of additive and the balance of water, wherein the halogen-free ionic liquid is a halogen-free ionic liquid with Bronsted acidity, the additive is 8-hydroxyquinoline, polyalcohol and organic acid, and the molecular formula of the halogen-free ionic liquid is [ R-A ]]m[X]wherein-A= -H, -SO 3 H、-COOH、-PO 3 H 2 ，[X]M=1-3, r is nitrogen-containing or phosphorus-containing cation, the additive comprises 20-50% of polyalcohol, 30-50% of organic acid and the balance 8-hydroxyquinoline, the polyalcohol is fatty alcohol with hydroxyl, and is selected from one or a combination of a plurality of ethylene glycol, diethylene glycol, glycerol, pentanediol, diethylene glycol and polyethylene glycol, and the halogen-free oxyacid anion is selected from one or a combination of a plurality of sulfate radical, phosphate radical, oxalate, acetate, sulfonate and nitrate radical;
the nitrogen-or phosphorus-containing cation is selected from the group consisting of one or more of a quaternary ammonium cation, a quaternary phosphonium cation, an imidazolium cation, a pyrrolidinium cation, and an amino acid cation.
2. An aluminum product anodizing solution according to claim 1, characterized in that: the organic acid is hydroxyl-containing organic acid, and is selected from one or more of tartaric acid, citric acid, malic acid, ascorbic acid and lactic acid.
3. A method of using the aluminum anodizing solution as set forth in claim 1 or 2, characterized in that: the method comprises the following steps:
step one: firstly preparing an aluminum product anodized solution by halogen-free ionic liquid, an additive and water according to a proportion, then placing the aluminum product to be oxidized into the prepared aluminum product anodized solution for anodic oxidation to prepare the aluminum product with an anodic oxide film layer on the surface, and completing anodic oxidation work;
step two: the used anodic oxidation liquid is recycled, and the aluminum material is continuously anodized after the recycling is finished, and the specific flow is as follows: filtering the used anodic oxidation liquid, concentrating the filtered anodic oxidation liquid, carrying out column chromatography on the concentrated anodic oxidation liquid, eluting the anodic oxidation liquid after column chromatography, carrying out secondary concentration on the eluted anodic oxidation liquid, and finally carrying out concentration adjustment on the secondary concentrated anodic oxidation liquid to obtain the anodic oxidation liquid after recovery treatment.
4. A method of using an aluminum anodic oxidation liquid according to claim 3, wherein: in the first step, the anodic oxidation current density is 0.1-8A/dm 2 The temperature is-20-70 ℃.
5. A method of using an aluminum anodic oxidation liquid according to claim 3, wherein: in the second step, the filler used in the column chromatography treatment process is one or a combination of more of alumina, silica gel, diatomite, active carbon and ion exchange resin.
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