CN108359810A - A kind of environment-friendly type regeneration aluminium refining agent and its application method - Google Patents
A kind of environment-friendly type regeneration aluminium refining agent and its application method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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Abstract
The present invention principally falls into secondary aluminium technical field, and in particular to a kind of environment-friendly type regeneration aluminium refining agent and its application method.The refining agent includes：NaCl、KCl、Na3AlF6、NaNO3, carbon dust, rare earth oxide；The mass percent of each component is：NaCl 10 40wt%, KCl 10 40wt%, Na3AlF6 5 18wt%, NaNO3 20 40wt%, 2 4wt% of carbon dust, 0.5 10wt% of rare earth oxide.Its middle rare earth is the one or more of La, Ce, Y oxide.The hydrogen content that environment-friendly type regeneration aluminium refining agent of the present invention can enable aluminum alloy to melt drop to 0.15 ml/100 g Al hereinafter, removal of impurities degassing effect it is good, do not generate the pollutions such as chlorine.
Description
Technical field
The present invention principally falls into secondary aluminium technical field, and in particular to a kind of environment-friendly type regeneration aluminium refining agent and its user
Method.
Background technology
The aluminium alloy market demand constantly increases, and bauxite resource is difficult to meet demand.At the same time, aluminium secondary resource is drastically
Increase, secondary aluminium not only saves bauxite resource, but also specific energy consumption only has the 3%-4% of primary aluminium, effects of energy saving and emission reduction notable.
It is main former that secondary aluminium alloy production, which is typically with the aluminium alloys such as aluminium Product Process waste material and aluminium scrap pop can, aluminium foil, aluminum products,
Material, it is smelting to prepare the aluminium alloy ingots for producing target component.
Aluminium secondary resource derives from a wealth of sources, and contains metal class（Such as Mg, Si, Fe, Zn）With the impurity such as non-metal kind, therefore,
Secondary aluminium composition adjustment difficulty is big.In order to ensure the quality of secondary aluminium alloy, certain refining agent is added in fusion process and is carried out
Removal of impurities.But the R＆D work of secondary aluminium refining agent seriously lags, lack in the market it is efficient, be applicable in, refining agent economical and environmentally friendly.
Relevant enterprise mostly uses NaCl, NaF, KCl and Na3AlF6Equal villaumites and villiaumite and Cl2Or C2Cl6Etc. being handled.Using containing chlorine
Substance refining aluminium alloy melt, good impurity removing effect, but its by-product AlCl3, HCl and Cl2Etc. can be made to human body, environment and equipment
At serious damage, there is an urgent need for develop environmental type refining agent.
Technical information about aluminum refining agent is found in disclosed Chinese patent literature.
Chinese patent（Application number 201310558338.4）" a kind of Way of Remelting Scrap Aluminium refining agent preparation method " announced,
Refining agent ingredient is：Silica flour 4-5%, potassium feldspar by weight percentage：6-8%, dolomite：3-5%、Na2TiF6：8-10%、NaF：
3-5%, aluminium chloride：5-8%, nano silicon dioxide：4-5%, clay：10-12%, prodan：3-4%, sodium nitrate：4-5%, titanium white
Powder：2-3%, fluorite：6-8%, jade powder：3-4%, montmorillonite：1-2%.Chinese patent（Application number 201010522744.1）It announces
" a kind of aluminium and aluminium alloy refining agent ", refining agent main component is：Content by mass percentage is NaCl：30-
85%、Na2SiF6：5-40%、Na2SO4：5-40%、CaF2：2-20% and C6Cl6：0.5-5%：The refining agent can also include
One or more of CaMg (CO3) 2, Na3AlF6, NaS2O3, NaF.Chinese patent（Application number:
201210492286.0）" a kind of aluminium alloy smelting refining agent " announced, refining agent ingredient is：Remember by weight percentage：Chlorine
Change potassium：40-70%, aluminium sodium fluoride：15-30%, phenyl-hexafluoride：1-10%, calcium sulfide：5-15%, sodium sulphate：5-20%.Chinese patent
（Application number 201310660348.9）" aluminum refining agent " announced, refining agent ingredient are：It is respectively by mass percentage：
KCl：35-50%、NaCl：30-40%、CaF2：5-8%、Na3AlF6：8-15%、Mg2N3：5-10%、C2Cl6：3-6% and rare earth：
0.2-0.5%.Although above-mentioned aluminum refining agent can will remove some field trashes and reduce hydrogen content, for being mingled with
More aluminium alloy smelting process, undesirable, the institute that is especially mingled with removal effect containing tiny field trash, nonmetal oxide etc.
It is of high cost to cause refining agent usage amount big；And containing aluminium chloride or aluminium chloride can be generated in above-mentioned refining agent ingredient, to people
Body, environment cause damages.
Invention content
For the environmental problem that existing refining agent is brought, the present invention provides a kind of environmental protection suitable for secondary aluminium alloy melting
Type refining agent does not generate venomous injurant metallic substance, can improve the yield of aluminium alloy, and the dehydrogenation effect that cleans is good.
The present invention is achieved by the following technical solutions：
A kind of environment-friendly type regeneration aluminium refining agent, the refining agent include：NaCl、KCl、Na3AlF6、NaNO3, carbon dust, rare-earth oxidation
Object；The mass percent of each component is：NaCl 10-40wt%, KCl 10-40wt%, Na3AlF65-18wt%, NaNO3 20-
40wt%, carbon dust 2-4wt%, rare earth oxide 0.5-10wt%.The refining agent Synergistic Mechanisms of the present invention are closed using in aluminium
Localized hyperthermia's fluctuation of energy that exothermic reaction is formed under golden smelting temperature, rare earth oxide are reduced directly by the aluminium element in alloy
At the rare earth element with fresh activity surface, the atomic state activity rare earth of precipitation can generate stabilization under smelting temperature with hydrogen
Hydride, into being discharged in slag；Another aspect NaNO3 and carbon dust, which react, can generate carbon dioxide and nitrogen, in floating-upward process
The hydrogen in melt can be adsorbed.Solid dehydrogenation is combined with gas dehydrogenation, can reduce the hydrogen content in melt well.
Further, the rare earth oxide selects in cheap La oxides, Ce oxides and Y oxides
Any one is two kinds and two or more arbitrary.
Further, the rare earth oxide is La2O3、CeO2And Y2O3In any one or it is arbitrary two kinds and two kinds with
On.
Further, the hydrogen content of the aluminium alloy prepared using the refining agent is less than 0.15ml/100 g Al.
A kind of preparation method of environment-friendly type regeneration aluminium refining agent is used to prepare the environment-friendly type regeneration aluminium refining agent, will
NaCl、KCl、Na3AlF6、NaNO3, carbon dust, rare earth oxide be uniformly mixed in proportion, be heated to 120-180 DEG C until water
It point evaporates, ball milling obtains 30-300 μm of powdered refining agent.
A kind of secondary aluminium method of refining, using the environment-friendly type regeneration aluminium refining agent, when secondary aluminium refines, with N2Or Ar
The powdered refining agent is sent into molten aluminum for carrier, control gas flow is 0.5-15L/min, the refining agent dosage
For the 0.1-0.3% of aluminium alloy melt quality.
Further, the secondary aluminium includes：3104 aluminium alloys, 7075 aluminium alloys, 2024 aluminium alloys, 6063 aluminium alloys,
It is any one in ADC12 aluminium alloys, 7055 aluminium alloys, 5083 aluminium alloys, 4A01 aluminium alloys, 2014 aluminium alloys and 3004 aluminium alloys
Kind.
The advantageous effects of the present invention：
1）The environment-friendly type regeneration aluminium refining agent provided by the invention is free of C2Cl6, venomous injurant metallic substance is not generated；
2）The environment-friendly type regeneration aluminium refining agent provided by the invention improves the receipts of aluminium alloy without containing the substance with reactive aluminum
Rate；
3）The environment-friendly type regeneration aluminium refining agent provided by the invention, when secondary aluminium refines, removal of impurities dehydrogenation effect is good, utilizes this
The hydrogen content for the aluminium alloy that refining agent prepares is less than 0.15ml/100 g Al, and removal of impurities degassing effect is good, does not generate chlorine etc.
Pollution.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is explained in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, it is not used to
Limit the present invention.
On the contrary, the present invention covers any replacement done in the spirit and scope of the present invention being defined by the claims, repaiies
Change, equivalent method and scheme.Further, in order to make the public have a better understanding the present invention, below to the thin of the present invention
It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art
Description can also understand the present invention completely.
Embodiment 1：Refine agent prescription：NaCl is 10wt%, KCl 40wt%, Na3AlF6For 18wt%, NaNO3For 20wt%,
Carbon dust is 2wt%, La2O3For 10wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, La2O3In proportion into
Row is uniformly mixed, and is heated to 120 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.Regenerate 3104 aluminium alloys essence
When refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 0.5L/min, refining agent dosage is molten for aluminium alloy
The 0.1% of body.The melt hydrogen content of aluminium alloy is 0.14ml/100 g Al after refining.
Embodiment 2：Refine agent prescription：NaCl is 20wt%, KCl 30wt%, Na3AlF6For 18wt%, NaNO3For 20wt%,
Carbon dust is 2wt%, CeO2For 10wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, CeO2It carries out in proportion
It is uniformly mixed, is heated to 130 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.Regenerate 3104 alloy refinings
When, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 0.5L/min, refining agent dosage is aluminium alloy melt
0.1%.The melt hydrogen content of aluminium alloy is 0.13ml/100 g Al after refining.
Embodiment 3：Refine agent prescription：NaCl is 30wt%, KCl 20wt%, Na3AlF6For 18wt%, NaNO3For 20wt%,
Carbon dust is 2wt%, Y2O3For 10wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, Y2O3It carries out in proportion
It is uniformly mixed, is heated to 140 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.Regenerate 3104 alloy refinings
When, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 0.5L/min, refining agent dosage is aluminium alloy melt
0.1%.The melt hydrogen content of aluminium alloy is 0.14ml/100 g Al after refining.
Embodiment 4：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 18wt%, NaNO3For 20wt%,
Carbon dust is 2wt%, La2O3For 5wt%, CeO2For 5wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust,
La2O3、CeO2It is uniformly mixed in proportion, is heated to 150 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.
When reclaimed 7075 aluminum alloy refines, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 0.5L/min, refining
Agent dosage is the 0.1% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.12ml/100 g Al after refining.
Embodiment 5：Refine agent prescription：NaCl is 35wt%, KCl 15wt%, Na3AlF6For 18wt%, NaNO3For 20wt%,
Carbon dust is 2wt%, La2O3For 5wt%, Y2O3For 5wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust,
La2O3、Y2O3It is uniformly mixed in proportion, is heated to 160 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.
When reclaimed 7075 aluminum alloy refines, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 0.5L/min, refining
Agent dosage is the 0.1% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.11ml/100 g Al after refining.
Embodiment 6：Refine agent prescription：NaCl is 15wt%, KCl 35wt%, Na3AlF6For 18wt%, NaNO3For 20wt%,
Carbon dust is 2wt%, CeO2For 5wt%, Y2O3For 5wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, CeO2、
Y2O3It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.Regeneration
When 7075 alloy refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 0.5L/min, refining agent is used
Amount is the 0.1% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.10ml/100 g Al after refining.
Embodiment 7：Refine agent prescription：NaCl is 25wt%, KCl 25wt%, Na3AlF6For 18wt%, NaNO3For 20wt%,
Carbon dust is 2wt%, La2O3For 4wt%, CeO2For 3wt%, Y2O3For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、
NaNO3, carbon dust, La2O3、CeO2、Y2O3It is uniformly mixed in proportion, is heated to 170 DEG C until moisture evaporation finishes, ball milling obtains
To 30 μm of refining agent.When regenerating 2024 alloy refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas stream
1L/min is measured, refining agent dosage is the 0.1% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.11ml/100 g after refining
Al。
Embodiment 8：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 10wt%, NaNO3For 30wt%,
Carbon dust is 3wt%, La2O3For 7wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, La2O3It carries out in proportion
It is uniformly mixed, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.Regenerate 2024 alloy refinings
When, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 1L/min, refining agent dosage is aluminium alloy melt
0.1%.The melt hydrogen content of aluminium alloy is 0.10ml/100 g Al after refining.
Embodiment 9：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 5wt%, NaNO3For 40wt%,
Carbon dust is 4wt%, La2O3For 1wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, La2O3It carries out in proportion
It is uniformly mixed, is heated to 130 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.Regenerate 2024 alloy refinings
When, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 1L/min, refining agent dosage is aluminium alloy melt
0.1%.The melt hydrogen content of aluminium alloy is 0.09ml/100 g Al after refining.
Embodiment 10：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 5.5wt%, NaNO3For
40wt%, carbon dust 4wt%, La2O3For 0.5wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, La2O3It presses
Ratio is uniformly mixed, and is heated to 145 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.Regenerate 6063 aluminium
When alloy refines, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 1L/min, refining agent dosage is closed for aluminium
The 0.1% of golden melt.The melt hydrogen content of aluminium alloy is 0.11ml/100 g Al after refining.
Embodiment 11：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 8wt%, NaNO3For 35wt%,
Carbon dust is 3.5wt%, La2O3For 3.5wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, La2O3In proportion
It is uniformly mixed, is heated to 155 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.Regenerate 6063 aluminium alloys
When refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 1L/min, refining agent dosage is molten for aluminium alloy
The 0.2% of body.The melt hydrogen content of aluminium alloy is 0.08ml/100 g Al after refining.
Embodiment 12：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 15wt%, NaNO3For
25wt%, carbon dust 2.5wt%, La2O3For 7.5wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, La2O3
It is uniformly mixed in proportion, is heated to 165 DEG C until moisture evaporation finishes, ball milling obtains 30 μm of refining agent.Regeneration 6063
When alloy refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 1L/min, refining agent dosage is aluminium
The 0.2% of alloy melt.The melt hydrogen content of aluminium alloy is 0.10ml/100 g Al after refining.
Embodiment 13：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 4wt%, CeO2For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, La2O3、CeO2It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 50 μm of refining
Agent.When regenerating ADC12 alloy refinings, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 5L/min, essence
Refine 0.2% that agent dosage is aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.08ml/100 g Al after refining.
Embodiment 14：Refine agent prescription：NaCl is 10wt%, KCl 40wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 4wt%, Y2O3For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, La2O3、Y2O3It is uniformly mixed in proportion, is heated to 175 DEG C until moisture evaporation finishes, ball milling obtains 70 μm of refining
Agent.When regenerating ADC12 alloy refinings, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 5L/min, essence
Refine 0.2% that agent dosage is aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.09ml/100 g Al after refining.
Embodiment 15：Refine agent prescription：NaCl is 20wt%, KCl 30wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, CeO2For 4wt%, Y2O3For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, CeO2、Y2O3It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 90 μm of refining
Agent.When regenerating ADC12 alloy refinings, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 5L/min, essence
Refine 0.2% that agent dosage is aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.10ml/100 g Al after refining.
Embodiment 16：Refine agent prescription：NaCl is 30wt%, KCl 20wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 3wt%, CeO2For 2wt%, Y2O3For 2wt%.Preparation method is：By NaCl, KCl,
Na3AlF6、NaNO3, carbon dust, La2O3、CeO2、Y2O3It is uniformly mixed in proportion, is heated to 125 DEG C until moisture evaporation is complete
Finish, ball milling obtains 110 μm of refining agent.When regenerating 7055 alloy refining, with N2Refining agent feeding aluminium alloy is melted for carrier
In body, gas flow 5L/min, refining agent dosage is the 0.2% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is after refining
0.11ml/100 g Al。
Embodiment 17：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 7wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, La2O3By than
Example is uniformly mixed, and is heated to 135 DEG C until moisture evaporation finishes, ball milling obtains 130 μm of refining agent.Regenerate the conjunction of 7055 aluminium
When gold refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 5L/min, refining agent dosage is aluminium alloy
The 0.2% of melt.The melt hydrogen content of aluminium alloy is 0.11ml/100 g Al after refining.
Embodiment 18：Refine agent prescription：NaCl is 35wt%, KCl 15wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, CeO2For 7wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, CeO2In proportion
It is uniformly mixed, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 150 μm of refining agent.Regenerate 7055 aluminium alloys
When refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 5L/min, refining agent dosage is molten for aluminium alloy
The 0.2% of body.The melt hydrogen content of aluminium alloy is 0.12ml/100 g Al after refining.
Embodiment 19：Refine agent prescription：NaCl is 15wt%, KCl 35wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, Y2O3For 7wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, Y2O3In proportion
It is uniformly mixed, is heated to 175 DEG C until moisture evaporation finishes, ball milling obtains 170 μm of refining agent.Regenerate 5083 aluminium alloys
When refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 10L/min, refining agent dosage is aluminium alloy
The 0.2% of melt.The melt hydrogen content of aluminium alloy is 0.11ml/100 g Al after refining.
Embodiment 20：Refine agent prescription：NaCl is 25wt%, KCl 25wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 7wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon dust, La2O3By than
Example is uniformly mixed, and is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 190 μm of refining agent.Regenerate the conjunction of 5083 aluminium
When gold refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 10L/min, refining agent dosage is closed for aluminium
The 0.2% of golden melt.The melt hydrogen content of aluminium alloy is 0.10ml/100 g Al after refining.
Embodiment 21：Refine agent prescription：NaCl is 10wt%, KCl 40wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 4wt%, CeO2For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, La2O3、CeO2It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 210 μm of essence
Refine agent.When regenerating 5083 alloy refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 10L/min,
Refining agent dosage is the 0.3% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.09ml/100 g Al after refining.
Embodiment 22：Refine agent prescription：NaCl is 20wt%, KCl 30wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 4wt%, Y2O3For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, La2O3、Y2O3It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 230 μm of essence
Refine agent.When regenerating 4A01 alloy refinings, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 10L/min,
Refining agent dosage is the 0.3% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.10ml/100 g Al after refining.
Embodiment 23：Refine agent prescription：NaCl is 30wt%, KCl 20wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, CeO2For 4wt%, Y2O3For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, CeO2、Y2O3It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 250 μm of refining
Agent.When regenerating 4A01 alloy refinings, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 10L/min, essence
Refine 0.3% that agent dosage is aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.11ml/100 g Al after refining.
Embodiment 24：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 3wt%, CeO2For 2wt%, Y2O3For 2wt%.Preparation method is：By NaCl, KCl,
Na3AlF6、NaNO3, carbon dust, La2O3、CeO2、Y2O3It is uniformly mixed in proportion, is heated to 160 DEG C until moisture evaporation is complete
Finish, ball milling obtains 270 μm of refining agent.When regenerating 4A01 alloy refinings, with N2Refining agent feeding aluminium alloy is melted for carrier
In body, gas flow 10L/min, refining agent dosage is the 0.3% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is after refining
0.12ml/100 g Al。
Embodiment 25：Refine agent prescription：NaCl is 35wt%, KCl 15wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 4wt%, CeO2For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, La2O3、CeO2It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 300 μm of essence
Refine agent.When regenerating 2014 alloy refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 15L/min,
Refining agent dosage is the 0.3% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.12ml/100 g Al after refining.
Embodiment 26：Refine agent prescription：NaCl is 15wt%, KCl 35wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 4wt%, Y2O3For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, La2O3、Y2O3It is uniformly mixed in proportion, is heated to 145 DEG C until moisture evaporation finishes, ball milling obtains 280 μm of essence
Refine agent.When regenerating 2014 alloy refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 15L/min,
Refining agent dosage is the 0.3% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.10ml/100 g Al after refining.
Embodiment 27：Refine agent prescription：NaCl is 25wt%, KCl 25wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, CeO2For 4wt%, Y2O3For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, CeO2、Y2O3It is uniformly mixed in proportion, is heated to 165 DEG C until moisture evaporation finishes, ball milling obtains 260 μm of refining
Agent.When regenerating 2014 alloy refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 15L/min, essence
Refine 0.3% that agent dosage is aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.09ml/100 g Al after refining.
Embodiment 28：Refine agent prescription：NaCl is 20wt%, KCl 30wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 3wt%, CeO2For 2wt%, Y2O3For 2wt%.Preparation method is：By NaCl, KCl,
Na3AlF6、NaNO3, carbon dust, La2O3、CeO2、Y2O3It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation is complete
Finish, ball milling obtains 240 μm of refining agent.When regenerating 3004 alloy refining, with N2Refining agent feeding aluminium alloy is melted for carrier
In body, gas flow 15L/min, refining agent dosage is the 0.3% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is after refining
0.11ml/100 g Al。
Embodiment 29：Refine agent prescription：NaCl is 30wt%, KCl 20wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 4wt%, CeO2For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, La2O3、CeO2It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 220 μm of essence
Refine agent.When regenerating 3004 alloy refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 15L/min,
Refining agent dosage is the 0.3% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.10ml/100 g Al after refining.
Embodiment 30：Refine agent prescription：NaCl is 40wt%, KCl 10wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 4wt%, Y2O3For 3wt%.Preparation method is：By NaCl, KCl, Na3AlF6、NaNO3, carbon
Powder, La2O3、Y2O3It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation finishes, ball milling obtains 200 μm of essence
Refine agent.When regenerating 3004 alloy refining, with N2Refining agent is sent into aluminium alloy melt for carrier, gas flow 15L/min,
Refining agent dosage is the 0.3% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is 0.09ml/100 g Al after refining.
Embodiment 31：Refine agent prescription：NaCl is 20wt%, KCl 30wt%, Na3AlF6For 10wt%, NaNO3For
30wt%, carbon dust 3wt%, La2O3For 3wt%, CeO2For 2wt%, Y2O3For 2wt%.Preparation method is：By NaCl, KCl,
Na3AlF6、NaNO3, carbon dust, La2O3、CeO2、Y2O3It is uniformly mixed in proportion, is heated to 180 DEG C until moisture evaporation is complete
Finish, ball milling obtains 240 μm of refining agent.When regenerating 3004 alloy refining, refining agent feeding aluminium alloy is melted using Ar as carrier
In body, gas flow 15L/min, refining agent dosage is the 0.3% of aluminium alloy melt.The melt hydrogen content of aluminium alloy is after refining
0.11ml/100 g Al。
Claims (7)
1. a kind of environment-friendly type regeneration aluminium refining agent, which is characterized in that the refining agent includes：NaCl、KCl、Na3AlF6、NaNO3、
Carbon dust, rare earth oxide；The mass percent of each component is：NaCl 10-40wt%, KCl 10-40wt%, Na3AlF6 5-
18wt%, NaNO3 20-40wt%, carbon dust 2-4wt%, rare earth oxide 0.5-10wt%.
2. a kind of environment-friendly type regeneration aluminium refining agent according to claim 1, which is characterized in that the rare earth oxide is La oxygen
In compound, Ce oxides and Y oxides any one or it is two kinds and two or more arbitrary.
3. a kind of environment-friendly type regeneration aluminium refining agent according to claim 2, which is characterized in that the rare earth oxide is
La2O3、CeO2And Y2O3In any one or it is two kinds and two or more arbitrary.
4. a kind of environment-friendly type regeneration aluminium refining agent according to claim 1, which is characterized in that prepared using the refining agent
Aluminium alloy hydrogen content be less than 0.15ml/100 g Al.
5. a kind of preparation method of environment-friendly type regeneration aluminium refining agent, is used to prepare any one of claim 1-4 environment-friendly types again
Cast alumin(i)um refining agent, which is characterized in that by NaCl, KCl, Na3AlF6、NaNO3, carbon dust, rare earth oxide carry out mixing in proportion
It is even, 120-180 DEG C is heated to until moisture evaporation finishes, ball milling obtains 30-300 μm of powdered refining agent.
6. a kind of secondary aluminium method of refining, using any one of the claim 1-4 environment-friendly type regeneration aluminium refining agents, feature exists
In when secondary aluminium refines, with N2Or Ar is that the powdered refining agent is sent into molten aluminum by carrier, control gas flow is
0.5-15L/min, the refining agent dosage are the 0.1-0.3% of aluminium alloy melt quality.
7. a kind of secondary aluminium method of refining according to claim 6, which is characterized in that the secondary aluminium includes：3104 aluminium close
Gold, 7075 aluminium alloys, 2024 aluminium alloys, 6063 aluminium alloys, ADC12 aluminium alloys, 7055 aluminium alloys, 5083 aluminium alloys, 4A01 aluminium
Any one in alloy, 2014 aluminium alloys and 3004 aluminium alloys.
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