CN104988347A - Refining agent for production of aluminum alloy sacrificial anodes, and preparation method thereof - Google Patents
Refining agent for production of aluminum alloy sacrificial anodes, and preparation method thereof Download PDFInfo
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- CN104988347A CN104988347A CN201510463249.0A CN201510463249A CN104988347A CN 104988347 A CN104988347 A CN 104988347A CN 201510463249 A CN201510463249 A CN 201510463249A CN 104988347 A CN104988347 A CN 104988347A
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- refining agent
- aluminium alloy
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- sodium
- melt
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- 238000007670 refining Methods 0.000 title claims abstract description 97
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 77
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 30
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 25
- 239000011780 sodium chloride Substances 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 10
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 10
- 230000018044 dehydration Effects 0.000 claims abstract description 8
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000012216 screening Methods 0.000 claims abstract description 8
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 239000011734 sodium Substances 0.000 claims description 13
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 12
- -1 hexafluoro sodium aluminate Chemical compound 0.000 claims description 12
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 9
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 238000010907 mechanical stirring Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 10
- 239000002893 slag Substances 0.000 abstract description 7
- 238000007872 degassing Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000155 melt Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 229910001610 cryolite Inorganic materials 0.000 abstract 2
- IOXPXHVBWFDRGS-UHFFFAOYSA-N hept-6-enal Chemical compound C=CCCCCC=O IOXPXHVBWFDRGS-UHFFFAOYSA-N 0.000 abstract 2
- 239000001103 potassium chloride Substances 0.000 abstract 2
- 235000011164 potassium chloride Nutrition 0.000 abstract 2
- 238000002156 mixing Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000012856 weighed raw material Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 13
- 230000008676 import Effects 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 239000004411 aluminium Substances 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a refining agent for production of aluminum alloy sacrificial anodes, and a preparation method thereof. The refining agent for production of aluminum alloy sacrificial anodes comprises 30-40wt% of sodium chloride, 45-55wt% of potassium chloride, 3-5wt% of calcium fluoride, and the balance of sodium hexafluoroaluminate. The preparation method comprises the following steps: 1, carrying out drying dehydration on sodium chloride, potassium chloride, calcium fluoride and sodium hexafluoroaluminate, and weighing the above raw materials according to above weight percentages; and 2, mechanically stirring the weighed raw materials for uniform mixing, heating to 750-850DEG to prepare a melt, condensing the melt, crushing the condensed melt, and screening to obtain powder which is the finished refining agent. The refining agent has the advantages of simple and reasonable design of components, good slag removal effect, degassing and covering effects, low use temperature and ideal effect.
Description
Technical field
The present invention relates to and prepare sacrificial aluminium alloy anode refining agent and preparation method thereof.
Background technology
At present, the melting technology of domestic and international sacrificial aluminium alloy anode is all that the virgin aluminium ingot of 99.85%, the zinc ingot metal of 99.99% etc. are for raw material with purity, by smelting furnace, ingot metal is heated to about 750-780 DEG C of fusing, through operations such as fusing-stirring-alloy of leave standstill-skimming-add-standing-casting, obtained sacrificial aluminium alloy anode.Smelting furnace adopts electrically heated or gas heating usually.Due to ingot metal is heated to 780 DEG C by room temperature, smelting time is longer, and energy consumption is high, and the oxidization burning loss of metal is serious, and general oxidization burning loss rate is up to 10%.The melting of sacrificial anode lacks refining procedure, there is a large amount of bubbles and oxidized metal inclusions in alloy, causes that sacrificial aluminium alloy anode current potential is shuffled, surface dissolution is uneven, current efficiency reduces.
Almost all containing Na in commercially available refining agent composition
2siF
6, C powder, C
2cl
6, C
6cl
6in one or more, wherein the element such as Si, C has a strong impact on the open circuit potential of sacrificial anode, current capacity and current efficiency, is therefore unsuitable for the refining of sacrificial anode, C
2cl
6and C
6cl
6although refining effect is relatively good, release a large amount of Cl when refining
2gas, serious to human body and environmental hazard, also should not adopt.
Manufacturing refining agent for sacrificial anode has not yet to see report specially, and therefore this field needs the refining agent developing a kind of applicable sacrificial aluminium alloy anode refining, and both environmental friendliness, production cost is lower, can reach ideal refining effect again.
Summary of the invention
Main purpose of the present invention is the above-mentioned shortcoming overcoming currently available products existence, and provides one to prepare sacrificial aluminium alloy anode refining agent and preparation method thereof, this refining agent Composition Design advantages of simple, slagging-off effect is better, have degasification and covering effect concurrently, use temperature is lower, satisfactory for result.
The object of the invention is to be realized by following technical scheme.
The present invention prepares sacrificial aluminium alloy anode refining agent, it is characterized in that, it is by sodium-chlor (NaCl), Repone K (KCl), Calcium Fluoride (Fluorspan) (CaF
2) and hexafluoro sodium aluminate (Na
3alF
6) form; The weight percent of each component is: sodium-chlor (NaCl) is 30 to 40%, and Repone K (KCl) is 45-55%, Calcium Fluoride (Fluorspan) (CaF
2) be 3 to 5%, all the other are hexafluoro sodium aluminate (Na
3alF
6).
The present invention prepares the preparation method of sacrificial aluminium alloy anode refining agent, it is characterized in that, comprises the steps:
(1) by raw material sodium-chlor (NaCl), Repone K (KCl), Calcium Fluoride (Fluorspan) (CaF
2) and hexafluoro sodium aluminate (Na
3alF
6) drying dehydration, then weigh for subsequent use according to weight percent;
(2) each raw material after weighing is mixed through mechanical stirring, be heated to 800 ± 50 DEG C, make melt, through broken, screening obtained powder, i.e. finished product after melt condensation.
The aforesaid preparation method preparing sacrificial aluminium alloy anode refining agent, wherein, the weight percent of described each component is: sodium-chlor (NaCl) is 30 to 40%, and Repone K (KCl) is 45-55%, Calcium Fluoride (Fluorspan) (CaF
2) be 3 to 5%, all the other are hexafluoro sodium aluminate (Na
3alF
6).
The aforesaid preparation method preparing sacrificial aluminium alloy anode refining agent, wherein, described (1) raw material drying dewaters, and dehydration temperaturre is 500 to 600 DEG C.
The aforesaid preparation method preparing sacrificial aluminium alloy anode refining agent, wherein, the particle diameter of the obtained powder of described (2) screening is 0.05 to 0.5mm.
The present invention prepares the beneficial effect of sacrificial aluminium alloy anode refining agent and preparation method thereof, and in this refining agent Al adsorption alloy liquid, oxide inclusion effect is strong, improves affinability and degassing effect; Also there is the feature that composition is simple, cost is low.
Embodiment
Embodiment one:
A is NaCl, B be KCl, C is CaF
2, D is Na
3alF
6(hexafluoro sodium aluminate, commodity are called sodium aluminum fluoride)
1. the weight percent of refining agent formula: A is 36%, B is 51%, C is 6%, D is 7%.
2. by after each raw material drying dehydration after weighing, mechanical stirring mixes, and is heated to 800 ± 50 DEG C, makes melt, and after melt condensation, obtain particle diameter through broken, screening is the powder of 0.05 to 0.5mm.
3., when aluminium alloy temperature is 710-780 DEG C, powder refining agent and argon gas is sprayed into aluminium alloy melt through spray refining device and carries out refining, shift out after refining, and remove surface scum.
4. the use contrast of refining agent of the present invention, domestic refining agent and external import refining agent:
Refining agent of the present invention, domestic refining agent (RI41) and external import refining agent (HCR) are added in the aluminium alloy of thawing according to the ratio of 3g/kg and 5g/kg respectively, observe phenomena and collect weigh formed skim.After refining agent adds, domestic refining agent melts as spherical particle, does not spread and sprawls, and refining agent of the present invention and external import refining agent then spread over rapidly aluminium liquid surface and form protective layer; Compared with the domestic refining agent of equal add-on and import refining agent, refining agent of the present invention take off the quantity of slag be all less than another both.What domestic refining agent was formed skim is the high toughness slag of aluminum content, and what external import refining agent was formed is loose dryness slag, and be mixed with a small amount of aluminium liquid, what refining agent of the present invention was formed be loose dryness slag, does not contain aluminium liquid.Above-mentioned three kinds of aluminium liquid gained ingot castings after three kinds of refining agent refinings, after mechanical polishing corrosion, all exist without macroscopic pin hole, also there is not inclusion defect.Through microstructure picture display, after adding refining agent of the present invention gained aluminium alloy without being mingled with, free of pinholes.And the aluminium alloy after other two kinds of refining agent refinings is also substantially without macroscopic pin hole and oxide inclusion.
Embodiment two:
A is NaCl, B be KCl, C is CaF
2, D is Na
3alF
6
1. the weight percent of refining agent formula: A is 41%, B is 50%, C be 4%C, D is 5%D.
2. by after each raw material drying dehydration after weighing, mechanical stirring mixes, and is heated to 800 ± 50 DEG C, makes melt, and after melt condensation, obtain particle diameter through broken, screening is the powder of 0.05 to 0.5mm.
3., when aluminium alloy temperature is 710-780 DEG C, powder refining agent and argon gas is sprayed into aluminium alloy melt through spray refining device and carries out refining, shift out after refining, and remove surface scum.
4. by the use contrast of refining agent of the present invention, domestic refining agent and external import refining agent:
Refining agent of the present invention, domestic refining agent (RI41) and external import refining agent (HCR) are added in the aluminium-zinc alloy of thawing according to the ratio of 3g/kg and 5g/kg respectively, observe phenomena and collect weigh formed skim, acquired results is identical with embodiment one comparison result.Respectively through three kinds of aluminium-zinc alloy liquid gained ingot castings after refining agent of the present invention, domestic refining agent and external import refining agent refining after mechanical polishing corrosion, all exist without macroscopic pin hole, also there is not inclusion defect.
Embodiment three:
A is NaCl, B be KCl, C is CaF
2, D is Na
3alF
6
1. the weight percent of refining agent formula: A is 43%, B is 47%, C is 6%, D is 4%.
2. by after each raw material drying dehydration after weighing, mechanical stirring mixes, and is heated to 800 ± 50 DEG C, makes melt, and after melt condensation, obtain particle diameter through broken, screening is the powder of 0.05 to 0.5mm.
3., when aluminium alloy temperature is 710-780 DEG C, powder refining agent and argon gas is sprayed into aluminium alloy melt through spray refining device and carries out refining, shift out after refining, and remove surface scum.
4. by the use contrast of refining agent of the present invention, domestic refining agent and external import refining agent:
By refining agent of the present invention, domestic refining agent (RI41) and external import refining agent (HCR) respectively according to the ratio of 3g/kg and 5g/kg add thawing containing in the aluminum alloy melt of 95% aluminium ingot and 4.5% zinc, observe phenomena and collect weigh formed skim, acquired results is identical with embodiment one comparison result.Respectively through three kinds of aluminum alloy melt gained ingot castings after refining agent of the present invention, domestic refining agent and external import refining agent refining after mechanical polishing corrosion, all exist without macroscopic pin hole, domestic flux contains a small amount of inclusion defect.
The content be not described in the embodiment of the present invention is prior art, therefore, no longer repeat.
The advantage of refining agent of the present invention: the wetting angle little (being about 20 degree) between the oxide compound such as aluminum oxide in the fused salt mixt of NaCl and KCl contained in this refining agent and aluminium alloy, infiltrate, adhesive capacity is strong, can well oxide inclusion in Al adsorption alloy liquid.Add some villiaumites in the sosoloid of NaCl and KCl after, as CaF
2, Na
3alF
6the affinability of refining agent can be significantly improved.This is because villiaumite can improve surface tension between refining agent and aluminium alloy liquid under smelting temperature, refining agent is easily separated with aluminium alloy liquid, and accelerate the process of inclusion in refining agent absorption aluminium alloy, reduce loss metal caused because slag glues folder aluminium liquid, improve the ability of refining agent dissolved hydrogen, increase the degassing effect of refining agent.The density of each component contained by this refining agent is all not more than the density of aluminium alloy liquid, and it will cover the surface of aluminium alloy liquid after melting, and can not produce the danger be mingled with, and can effectively stop the continuation of aluminium alloy liquid to be oxidized.
This refining agent scope of application is prepare the aluminium alloy of sacrificial anode, and the content range of zinc in aluminium alloy (Zn) is 0-10%, and Zn content is too high easily causes component segregation.
Through experimental examination, it is good that it has slag making performance compared with existing refining agent, and by force, composition is simple, the feature that cost is low for degasification, purification capacity.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (5)
1. prepare a sacrificial aluminium alloy anode refining agent, it is characterized in that, it is by sodium-chlor (NaCl), Repone K (KCl), Calcium Fluoride (Fluorspan) (CaF
2) and hexafluoro sodium aluminate (Na
3alF
6) form; The weight percent of each component is: sodium-chlor (NaCl) is 30 to 40%, and Repone K (KCl) is 45-55%, Calcium Fluoride (Fluorspan) (CaF
2) be 3 to 5%, all the other are hexafluoro sodium aluminate (Na
3alF
6).
2. prepare a preparation method for sacrificial aluminium alloy anode refining agent as claimed in claim 1, it is characterized in that, comprise the steps:
(1) by raw material sodium-chlor (NaCl), Repone K (KCl), Calcium Fluoride (Fluorspan) (CaF
2) and hexafluoro sodium aluminate (Na
3alF
6) drying dehydration, then weigh for subsequent use according to weight percent;
(2) each raw material after weighing is mixed through mechanical stirring, be heated to 800 ± 50 DEG C, make melt, through broken, screening obtained powder, i.e. finished product after melt condensation.
3. the preparation method preparing sacrificial aluminium alloy anode refining agent according to claim 2, it is characterized in that, the weight percent of described each component is: sodium-chlor (NaCl) is 30 to 40%, and Repone K (KCl) is 45-55%, Calcium Fluoride (Fluorspan) (CaF
2) be 3 to 5%, all the other are hexafluoro sodium aluminate (Na
3alF
6).
4. the preparation method preparing sacrificial aluminium alloy anode refining agent according to claim 2, is characterized in that, described (1) raw material drying dewaters, and dehydration temperaturre is 500 to 600 DEG C.
5. the preparation method preparing sacrificial aluminium alloy anode refining agent according to claim 2, is characterized in that, the particle diameter of the obtained powder of described (2) screening is 0.05 to 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510463249.0A CN104988347A (en) | 2015-07-31 | 2015-07-31 | Refining agent for production of aluminum alloy sacrificial anodes, and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510463249.0A CN104988347A (en) | 2015-07-31 | 2015-07-31 | Refining agent for production of aluminum alloy sacrificial anodes, and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104988347A true CN104988347A (en) | 2015-10-21 |
Family
ID=54300240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510463249.0A Pending CN104988347A (en) | 2015-07-31 | 2015-07-31 | Refining agent for production of aluminum alloy sacrificial anodes, and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104988347A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435240A (en) * | 2016-11-24 | 2017-02-22 | 佛山市吉力达铝材科技有限公司 | Preparation method for refining agent |
| CN107460357A (en) * | 2017-07-14 | 2017-12-12 | 徐州耐克盾机械制造有限公司 | A kind of method of smelting aluminium alloy material |
| CN107460358A (en) * | 2017-07-14 | 2017-12-12 | 徐州耐克盾机械制造有限公司 | A kind of green high-efficient smelting agent and its preparation method and application |
| CN115595454A (en) * | 2022-10-27 | 2023-01-13 | 广东邦普循环科技有限公司（Cn） | Method for producing aluminum ingot by recycling aluminum from waste lithium battery positive plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740957A (en) * | 2014-01-22 | 2014-04-23 | 东北大学 | Casting method of aluminum alloy sacrificial anode |
| CN104328299A (en) * | 2014-10-23 | 2015-02-04 | 山东南山铝业股份有限公司 | Flux for aluminum and aluminum alloy melt refining and preparation method of flux |
-
2015
- 2015-07-31 CN CN201510463249.0A patent/CN104988347A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740957A (en) * | 2014-01-22 | 2014-04-23 | 东北大学 | Casting method of aluminum alloy sacrificial anode |
| CN104328299A (en) * | 2014-10-23 | 2015-02-04 | 山东南山铝业股份有限公司 | Flux for aluminum and aluminum alloy melt refining and preparation method of flux |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435240A (en) * | 2016-11-24 | 2017-02-22 | 佛山市吉力达铝材科技有限公司 | Preparation method for refining agent |
| CN107460357A (en) * | 2017-07-14 | 2017-12-12 | 徐州耐克盾机械制造有限公司 | A kind of method of smelting aluminium alloy material |
| CN107460358A (en) * | 2017-07-14 | 2017-12-12 | 徐州耐克盾机械制造有限公司 | A kind of green high-efficient smelting agent and its preparation method and application |
| CN115595454A (en) * | 2022-10-27 | 2023-01-13 | 广东邦普循环科技有限公司（Cn） | Method for producing aluminum ingot by recycling aluminum from waste lithium battery positive plate |
| CN115595454B (en) * | 2022-10-27 | 2024-01-05 | 广东邦普循环科技有限公司 | Method for recycling aluminum from waste lithium battery positive plate to generate aluminum ingot |
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Application publication date: 20151021 |