CN109082556A - A kind of smokeless refining agent, preparation method and refinery practice - Google Patents
A kind of smokeless refining agent, preparation method and refinery practice Download PDFInfo
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- CN109082556A CN109082556A CN201810860387.6A CN201810860387A CN109082556A CN 109082556 A CN109082556 A CN 109082556A CN 201810860387 A CN201810860387 A CN 201810860387A CN 109082556 A CN109082556 A CN 109082556A
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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
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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Abstract
The present invention relates to aluminium and its alloy purification refining treatment technical field, in particular to a kind of smokeless refining agent, preparation method and refinery practice, it is intended to clean to the molten aluminum during alloy refining, to improve product quality.Wherein smokeless refining agent includes following parts by weight of component: 30-40 parts of potassium chloride；15-30 parts of prodan；15-30 parts of sodium chloride；Potassium fluoroaluminate 10-20；8-20 parts of sodium sulphate；1-3 parts of modifying agent；Wherein modifying agent is chitosan.The present invention in refining agent by adding chitosan as modifying agent, chitosan can promote the decomposition of potassium fluoroaluminate in refining agent, simultaneously, reduce the interfacial tension between refining agent and oxide inclusion, oxide inclusion is set smoothly to swim on liquid level, and then be removed, to improve product quality.
Description
Technical field
The present invention relates to aluminium and its alloy purification refining treatment technical field, in particular to a kind of smokeless refining agent, preparation
Method and refinery practice.
Background technique
In order to realize making full use of for bauxite resource, existing withdrawal aluminium waste product is simultaneously reprocessed, and repeats to recycle to realize
Aluminium material manufacturing technique.But the aluminium waste of recycling is usually mixed with alkali metal impurities such as higher sodium, calcium and lithium, nonmetallic miscellaneous
Matter, organic material and steam.The casting and subsequent processing meeting of these alkali metal, nonmetallic slag inclusion and steam to aluminium and its alloy
It causes to seriously affect, it is impaired to eventually lead to the quality of ingot aluminum produced.So before aluminium waste casting, it is necessary to use refining agent
Purefying processing is carried out to the aluminum water of fusing, it is therefore an objective to remove alkali metal, the gas (mostly hydrogen) in aluminum water and other are miscellaneous
Object.
The Chinese invention patent that publication No. is CN105002387A discloses the refining agent of a kind of aluminium and aluminium alloy and makes
With the aluminium alloy smelting refinery practice of the refining agent, by aluminium alloy smelting in melt after, refining agent, and benefit are added thereto
It is refined with nitrogen gas stirring, and after appropriate raising temperature, continues to use electromagnetic agitation refining.
But the technical solution of above-mentioned disclosure is in implementation process, the impurity-eliminating effect of refining agent be not it is especially desirable, remove
Miscellaneous efficiency is lower, takes a long time, and removal of impurities is not thorough, and the quality of finished product aluminium ingot is caused to be affected.
Summary of the invention
The first object of the present invention is to provide a kind of smokeless refining agent, it is intended to the molten aluminum during alloy refining into
Row removal of impurities, to improve product quality.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of smokeless refining agent, including following parts by weight of component:
Further, the modifying agent is chitosan.
The second object of the present invention is to provide a kind of preparation method of smokeless refining agent, specifically includes the following steps:
S1: pretreatment is stirred and is heated after mixing potassium chloride, prodan, sodium chloride, potassium fluoroaluminate, sodium sulphate；
S2: microwave treatment is carried out to modifying agent；
S3: after material obtained in mixture obtained in S1 and S2 is sufficiently mixed, sintering；
S4: mixture obtained in S3 is crushed, is granulated, smokeless refining agent is obtained.
Further, heating temperature is 250-280 DEG C in S1.
Further, the temperature of microwave treatment is 150-190 DEG C in S2.
Further, sintering temperature is 300-310 DEG C in S3.
The third object of the present invention is to provide a kind of refinery practice using smokeless refining agent refined aluminum material, including following
Step:
Sa: putting into heating melting in refining furnace for aluminium material, molten aluminum be made, and controls temperature and stablize；
Sb: the smokeless refining agent comprising modifying agent is sprayed into molten aluminum, carries out first time refining；
Sc: after refining for the first time, operation of skimming for the first time is carried out；
Sd: control refining furnace inner gas pressure, and molten aluminum in furnace is sufficiently stirred；
Se: molten aluminum is stood, operation of being skimmed for the second time later；
Sf: the step of repeating Sb-Se completes refinery process.
Further, increase Se ' between Se and Sf: molten aluminum ingredient in refining furnace being detected, and is added as needed
Add adjustment material.
Further, temperature is controlled at 710-730 DEG C in Sa.
Further, furnace inner gas pressure control is refined in Sd in 0.2-0.3Mpa.
Sodium chloride, potassium chloride and potassium fluoroaluminate etc. in the present invention, chemically react with the aluminium in molten aluminum, generate fluorination
Aluminium, aluminium chloride etc., these substances are in gaseous state in molten aluminum, and are not dissolved in molten aluminum, can be passed through when escaping from molten aluminum
Flotation effect removes the partial oxidation field trash in molten aluminum.Meanwhile refining is added to using chitosan as modifying agent in the present invention
In agent, chitosan can promote potassium fluoroaluminate to be decomposed into sodium fluoride and aluminum fluoride etc., escape in gaseous sodium fluoride and aluminum fluoride
Part sundries is taken when out out of, to improve refining efficiency.
On the other hand, oxide inclusion can not be wetted by aluminum in molten aluminum, and the interfacial tension between the two is larger.
And chitosan is capable of increasing the interfacial tension between refining agent and molten aluminum and between molten aluminum and oxide inclusion, reduces refining agent
Interfacial tension between oxide inclusion keeps oxide inclusion wetted, thus in gaseous sodium fluoride and aluminum fluoride etc.
It is easier to be carried in evolution from molten aluminum, and then improves impurity-eliminating effect.
Meanwhile chitosan is capable of increasing the adhesion property of refining agent, makes field trash be easier to be refined agent absorption, to reach
The purpose of removal of impurities.
The present invention carries out microwave treatment when preparing the smokeless refining agent containing modifying agent, to modifying agent chitosan.Microwave
Processing can increase the specific surface area of chitosan in a short time, improve the adsorption capacity of chitosan, improve chitosan and promote fluorine
The ability that potassium aluminate decomposes shortens refining time.
For the present invention during to aluminum anodizing, control refining furnace inner gas pressure is in 0.2-0.3Mpa, by reducing furnace
The method of internal pressure reduces resistance when gas evolution in molten aluminum, so that oxide inclusion is easier to swim in liquid level, so as to logical
Operation of skimming is crossed to be removed.
In conclusion the invention has the following advantages:
1. chitosan can promote potassium fluoroaluminate to be decomposed into fluorine by being added to chitosan as modifying agent in refining agent
Change sodium and aluminum fluoride etc., part sundries is taken out of in evolution in gaseous sodium fluoride and aluminum fluoride, to improve refining efficiency；
2. utilization chitosan increases between refining agent and molten aluminum and the interfacial tension between molten aluminum and oxide inclusion, subtract
Interfacial tension between small refining agent and oxide inclusion keeps oxide inclusion wetted, thus in gaseous sodium fluoride and
Aluminum fluoride etc. is easier to be carried over from molten aluminum in evolution, and then improves impurity-eliminating effect；
3. increasing the adhesion property of refining agent by chitosan, makes field trash be easier to be refined agent absorption, removed with reaching
Miscellaneous purpose；
4. control refining furnace inner gas pressure reduces gas in molten aluminum by the method for reduction furnace internal pressure in 0.2-0.3Mpa
Resistance when body escapes, so that oxide inclusion is easier to swim in liquid level.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with specific embodiment.Obviously, described
Embodiment be only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to guarantor of the present invention
The range of shield.
The present invention discloses a kind of smokeless refining agents and preparation method thereof, and use the smokeless refining agent refined aluminum material
Refinery practice is specifically described in detail with the following Examples.
Embodiment 1
One, each component content of the smokeless refining agent is as follows:
Two, the smokeless refining agent the preparation method comprises the following steps:
S1: pretreatment mixes the potassium chloride of above-mentioned content component, prodan, sodium chloride, potassium fluoroaluminate, sodium sulphate
Afterwards, 250 DEG C are stirred and heated to；
S2: microwave treatment is carried out to chitosan, and the temperature of microwave treatment is controlled at 170 DEG C；
S3: it after material obtained in mixture obtained in S1 and S2 is thoroughly mixed, is put into sintering furnace, 300-
305 DEG C of sintering；
S4: mixture obtained in S3 is crushed using pulverizer, and is granulated using pelletizer, smokeless refining agent is obtained.
Three, the refinery practice using the smokeless refining agent refined aluminum material is as follows:
Sa: ADC10 aluminium alloy is put into heating melting in refining furnace, molten aluminum is made, and control temperature at 710-720 DEG C.
Sb: the smokeless refining agent comprising chitosan is sprayed into molten aluminum using powder blower, carries out first time refining, control is every
The weight of chitosan used in ton aluminium material is 2.5kg；Ensure to dust nozzle in course of injection apart from refining furnace bottom 10cm, and controls spray
Tube cell does Z-shaped with the speed of 0.2-0.3m/s in refining furnace and at the uniform velocity moves, and covers entire refining furnace.
Sc: after refining for the first time, molten aluminum stands 5min, so as to slag emersion liquid level, carries out operation of skimming for the first time；It skims
When by slag bucket and be emitted into refining stove gate, slag rake is provoked to 2m height with fork truck, is steadily entered in refining furnace, from molten bath
Innermost end is taken off outward, and slag is taken off to table, is then all grilled into slag in slag bucket.
Sd: control refining furnace inner gas pressure utilizes the discharge tube of powder blower in furnace with 0.2- in 0.2-0.3Mpa
The speed of 0.3m/s is done Z-shaped in refining furnace and is at the uniform velocity moved, and covers entire refining furnace, molten aluminum in furnace to be sufficiently stirred.
Se: molten aluminum stands 5min, operation of being skimmed for the second time later.
Se ': molten aluminum ingredient in refining furnace is detected, and adjustment material is added as needed.
Sf: the step of repeating Sb-Se completes refinery process.
Embodiment 2
One, each component content of the smokeless refining agent is as follows:
Two, the smokeless refining agent the preparation method comprises the following steps:
S1: pretreatment mixes the potassium chloride of above-mentioned content component, prodan, sodium chloride, potassium fluoroaluminate, sodium sulphate
Afterwards, 260 DEG C are stirred and heated to；
S2: microwave treatment is carried out to chitosan, and the temperature of microwave treatment is controlled at 150 DEG C；
S3: it after material obtained in mixture obtained in S1 and S2 is thoroughly mixed, is put into sintering furnace, 305-
310 DEG C of sintering；
S4: mixture obtained in S3 is crushed using pulverizer, and is granulated using pelletizer, smokeless refining agent is obtained.
Three, the refinery practice using the smokeless refining agent refined aluminum material is as follows:
Sa: ADC10 aluminium alloy is put into heating melting in refining furnace, molten aluminum is made, and control temperature at 720-730 DEG C.
Sb: the smokeless refining agent comprising chitosan is sprayed into molten aluminum using powder blower, carries out first time refining, control is every
The weight of chitosan used in ton aluminium material is 2.5kg；Ensure to dust nozzle in course of injection apart from refining furnace bottom 10cm, and controls spray
Tube cell does chuan-shaped with the speed of 0.2-0.3m/s in refining furnace and at the uniform velocity moves, and covers entire refining furnace.
Sc: after refining for the first time, molten aluminum stands 5min, so as to slag emersion liquid level, carries out operation of skimming for the first time；It skims
When by slag bucket and be emitted into refining stove gate, slag rake is provoked to 2m height with fork truck, is steadily entered in refining furnace, from molten bath
Innermost end is taken off outward, and slag is taken off to table, is then all grilled into slag in slag bucket.
Sd: control refining furnace inner gas pressure utilizes the discharge tube of powder blower in furnace with 0.2- in 0.2-0.3Mpa
The speed of 0.3m/s is done chuan-shaped in refining furnace and is at the uniform velocity moved, and covers entire refining furnace, molten aluminum in furnace to be sufficiently stirred.
Se: molten aluminum stands 5min, operation of being skimmed for the second time later.
Se ': molten aluminum ingredient in refining furnace is detected, and adjustment material is added as needed.
Sf: the step of repeating Sb-Se completes refinery process.
Embodiment 3
One, each component content of the smokeless refining agent is as follows:
Two, the smokeless refining agent the preparation method comprises the following steps:
S1: pretreatment mixes the potassium chloride of above-mentioned content component, prodan, sodium chloride, potassium fluoroaluminate, sodium sulphate
Afterwards, 270 DEG C are stirred and heated to；
S2: microwave treatment is carried out to chitosan, and the temperature of microwave treatment is controlled at 180 DEG C；
S3: it after material obtained in mixture obtained in S1 and S2 is thoroughly mixed, is put into sintering furnace, 300-
310 DEG C of sintering；
S4: mixture obtained in S3 is crushed using pulverizer, and is granulated using pelletizer, smokeless refining agent is obtained.
Three, the refinery practice using the smokeless refining agent refined aluminum material is as follows:
Sa: ADC10 aluminium alloy is put into heating melting in refining furnace, molten aluminum is made, and control temperature at 710-730 DEG C.
Sb: the smokeless refining agent comprising chitosan is sprayed into molten aluminum using powder blower, carries out first time refining, control is every
The weight of chitosan used in ton aluminium material is 2.5kg；Ensure to dust nozzle in course of injection apart from refining furnace bottom 10cm, and controls spray
Tube cell does chuan-shaped with the speed of 0.2-0.3m/s in refining furnace and at the uniform velocity moves, and covers entire refining furnace.
Sc: after refining for the first time, molten aluminum stands 5min, so as to slag emersion liquid level, carries out operation of skimming for the first time；It skims
When by slag bucket and be emitted into refining stove gate, slag rake is provoked to 2m height with fork truck, is steadily entered in refining furnace, from molten bath
Innermost end is taken off outward, and slag is taken off to table, is then all grilled into slag in slag bucket.
Sd: control refining furnace inner gas pressure utilizes the discharge tube of powder blower in furnace with 0.2- in 0.2-0.3Mpa
The speed of 0.3m/s is done chuan-shaped in refining furnace and is at the uniform velocity moved, and covers entire refining furnace, molten aluminum in furnace to be sufficiently stirred.
Se: molten aluminum stands 5min, operation of being skimmed for the second time later.
Se ': molten aluminum ingredient in refining furnace is detected, and adjustment material is added as needed.
Sf: the step of repeating Sb-Se completes refinery process.
Embodiment 4
One, each component content of the smokeless refining agent is as follows:
Two, the smokeless refining agent the preparation method comprises the following steps:
S1: pretreatment mixes the potassium chloride of above-mentioned content component, prodan, sodium chloride, potassium fluoroaluminate, sodium sulphate
Afterwards, 280 DEG C are stirred and heated to；
S2: microwave treatment is carried out to chitosan, and the temperature of microwave treatment is controlled at 180 DEG C；
S3: it after material obtained in mixture obtained in S1 and S2 is thoroughly mixed, is put into sintering furnace, 300-
310 DEG C of sintering；
S4: mixture obtained in S3 is crushed using pulverizer, and is granulated using pelletizer, smokeless refining agent is obtained.
Three, the refinery practice using the smokeless refining agent refined aluminum material is as follows:
Sa: ADC12 aluminium alloy is put into heating melting in refining furnace, molten aluminum is made, and control temperature at 710-730 DEG C.
Sb: the smokeless refining agent comprising chitosan is sprayed into molten aluminum using powder blower, carries out first time refining, control is every
The weight of chitosan used in ton aluminium material is 3.0kg；Ensure to dust nozzle in course of injection apart from refining furnace bottom 10cm, and controls spray
Tube cell does chuan-shaped with the speed of 0.2-0.3m/s in refining furnace and at the uniform velocity moves, and covers entire refining furnace.
Sc: after refining for the first time, molten aluminum stands 5min, so as to slag emersion liquid level, carries out operation of skimming for the first time；It skims
When by slag bucket and be emitted into refining stove gate, slag rake is provoked to 2m height with fork truck, is steadily entered in refining furnace, from molten bath
Innermost end is taken off outward, and slag is taken off to table, is then all grilled into slag in slag bucket.
Sd: control refining furnace inner gas pressure utilizes the discharge tube of powder blower in furnace with 0.2- in 0.2-0.3Mpa
The speed of 0.3m/s is done chuan-shaped in refining furnace and is at the uniform velocity moved, and covers entire refining furnace, molten aluminum in furnace to be sufficiently stirred.
Se: molten aluminum stands 5min, operation of being skimmed for the second time later.
Se ': molten aluminum ingredient in refining furnace is detected, and adjustment material is added as needed.
Sf: the step of repeating Sb-Se completes refinery process.
Embodiment 5
One, each component content of the smokeless refining agent is as follows:
Two, the smokeless refining agent the preparation method comprises the following steps:
S1: pretreatment mixes the potassium chloride of above-mentioned content component, prodan, sodium chloride, potassium fluoroaluminate, sodium sulphate
Afterwards, 280 DEG C are stirred and heated to；
S2: microwave treatment is carried out to chitosan, and the temperature of microwave treatment is controlled at 180 DEG C；
S3: it after material obtained in mixture obtained in S1 and S2 is thoroughly mixed, is put into sintering furnace, 300-
310 DEG C of sintering；
S4: mixture obtained in S3 is crushed using pulverizer, and is granulated using pelletizer, smokeless refining agent is obtained.
Three, the refinery practice using the smokeless refining agent refined aluminum material is as follows:
Sa: ADC12 aluminium alloy is put into heating melting in refining furnace, molten aluminum is made, and control temperature at 710-730 DEG C.
Sb: the smokeless refining agent comprising chitosan is sprayed into molten aluminum using powder blower, carries out first time refining, control is every
The weight of chitosan used in ton aluminium material is 3.0kg；Ensure to dust nozzle in course of injection apart from refining furnace bottom 10cm, and controls spray
Tube cell does chuan-shaped with the speed of 0.2-0.3m/s in refining furnace and at the uniform velocity moves, and covers entire refining furnace.
Sc: after refining for the first time, molten aluminum stands 5min, so as to slag emersion liquid level, carries out operation of skimming for the first time；It skims
When by slag bucket and be emitted into refining stove gate, slag rake is provoked to 2m height with fork truck, is steadily entered in refining furnace, from molten bath
Innermost end is taken off outward, and slag is taken off to table, is then all grilled into slag in slag bucket.
Sd: control refining furnace inner gas pressure utilizes the discharge tube of powder blower in furnace with 0.2- in 0.2-0.3Mpa
The speed of 0.3m/s is done chuan-shaped in refining furnace and is at the uniform velocity moved, and covers entire refining furnace, molten aluminum in furnace to be sufficiently stirred.
Se: molten aluminum stands 5min, operation of being skimmed for the second time later.
Se ': molten aluminum ingredient in refining furnace is detected, and adjustment material is added as needed.
Sf: the step of repeating Sb-Se completes refinery process.
Embodiment 6
One, each component content of the smokeless refining agent is as follows:
Two, the smokeless refining agent the preparation method comprises the following steps:
S1: pretreatment mixes the potassium chloride of above-mentioned content component, prodan, sodium chloride, potassium fluoroaluminate, sodium sulphate
Afterwards, 280 DEG C are stirred and heated to；
S2: microwave treatment is carried out to chitosan, and the temperature of microwave treatment is controlled at 190 DEG C；
S3: it after material obtained in mixture obtained in S1 and S2 is thoroughly mixed, is put into sintering furnace, 300-
310 DEG C of sintering；
S4: mixture obtained in S3 is crushed using pulverizer, and is granulated using pelletizer, smokeless refining agent is obtained.
Three, the refinery practice using the smokeless refining agent refined aluminum material is as follows:
Sa: ADC12 aluminium alloy is put into heating melting in refining furnace, molten aluminum is made, and control temperature at 710-730 DEG C.
Sb: the smokeless refining agent comprising chitosan is sprayed into molten aluminum using powder blower, carries out first time refining, control is every
The weight of chitosan used in ton aluminium material is 3.0kg；Ensure to dust nozzle in course of injection apart from refining furnace bottom 10cm, and controls spray
Tube cell does chuan-shaped with the speed of 0.2-0.3m/s in refining furnace and at the uniform velocity moves, and covers entire refining furnace.
Sc: after refining for the first time, molten aluminum stands 5min, so as to slag emersion liquid level, carries out operation of skimming for the first time；It skims
When by slag bucket and be emitted into refining stove gate, slag rake is provoked to 2m height with fork truck, is steadily entered in refining furnace, from molten bath
Innermost end is taken off outward, and slag is taken off to table, is then all grilled into slag in slag bucket.
Sd: control refining furnace inner gas pressure utilizes the discharge tube of powder blower in furnace with 0.2- in 0.2-0.3Mpa
The speed of 0.3m/s is done chuan-shaped in refining furnace and is at the uniform velocity moved, and covers entire refining furnace, molten aluminum in furnace to be sufficiently stirred.
Se: molten aluminum stands 5min, operation of being skimmed for the second time later.
Se ': molten aluminum ingredient in refining furnace is detected, and adjustment material is added as needed.
Sf: the step of repeating Sb-Se completes refinery process.
The forward and backward ingredient therein of each embodiment aluminum anodizing is detected, specific detection method is with reference to " casting non-ferric is closed
Gold " (yellow extensive member writes, China Machine Press, 1999), aluminium alloy content standard is referring to GB/T 3190-1996.
It is " preceding " to indicate that " rear " expression is using after refining agent refining treatment using before refining agent refining treatment in upper table.
As can be seen from the above table, the molten aluminum in each embodiment, before carrying out refinery process, wherein the content of calcium and sodium is equal
It is apparently higher than required value, even up to twice of required value.In embodiment 1, the content of sodium is 0.0021% before refining, and
The content of technical requirements sodium must not be higher than 0.001%.But the smokeless refining agent and refinery practice in use the application are to reality
It applies after the molten aluminum in example 1 refined, wherein the content of sodium is reduced to 0.0007%, and reduced rate reaches 66.67%；Meanwhile calcium
Content also reduce 50%, sundries content meets technical requirements.
On the other hand, for iron, copper and magnesium, one of component as aluminium alloy, content does not have obvious drop
It is low, to will not cause end product quality impaired because of the refining of smokeless refining agent.
Claims (10)
1. a kind of smokeless refining agent, it is characterised in that: including following parts by weight of component:
2. a kind of smokeless refining agent according to claim 1, it is characterised in that: the modifying agent is chitosan.
3. a kind of preparation method of smokeless refining agent, it is characterised in that: the following steps are included:
S1: pretreatment is stirred and is heated after mixing potassium chloride, prodan, sodium chloride, potassium fluoroaluminate, sodium sulphate；
S2: microwave treatment is carried out to modifying agent；
S3: after material obtained in mixture obtained in S1 and S2 is sufficiently mixed, sintering；
S4: mixture obtained in S3 is crushed, is granulated, smokeless refining agent is obtained.
4. a kind of preparation method of smokeless refining agent according to claim 3, it is characterised in that: heating temperature is in S1
250-280℃。
5. a kind of preparation method of smokeless refining agent according to claim 3, it is characterised in that: the temperature of microwave treatment in S2
Degree is 150-190 DEG C.
6. a kind of preparation method of smokeless refining agent according to claim 3, it is characterised in that: sintering temperature is in S3
300-310℃。
7. a kind of refinery practice using smokeless refining agent refined aluminum material, it is characterised in that: the following steps are included:
Sa: putting into heating melting in refining furnace for aluminium material, molten aluminum be made, and controls temperature and stablize；
Sb: the smokeless refining agent comprising modifying agent is sprayed into molten aluminum, carries out first time refining；
Sc: after refining for the first time, operation of skimming for the first time is carried out；
Sd: control refining furnace inner gas pressure, and molten aluminum in furnace is sufficiently stirred；
Se: molten aluminum is stood, operation of being skimmed for the second time later；
Sf: the step of repeating Sb-Se completes refinery process.
8. a kind of refinery practice using smokeless refining agent refined aluminum material according to claim 7, it is characterised in that: in Se
Increase Se ' between Sf: molten aluminum ingredient in refining furnace being detected, and adjustment material is added as needed.
9. a kind of refinery practice using smokeless refining agent refined aluminum material according to claim 7, it is characterised in that: in Sa
Temperature is controlled at 710-730 DEG C.
10. a kind of refinery practice using smokeless refining agent refined aluminum material according to claim 7, it is characterised in that: Sd
Middle refining furnace inner gas pressure control is in 0.2-0.3Mpa.
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| CN2018103326167 | 2018-04-13 | ||
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1831161A (en) * | 2005-03-08 | 2006-09-13 | 东北轻合金有限责任公司 | Deslagging agent for high performance deforming aluminium and aluminium alloy, prepn. method and application thereof |
| CN108179298A (en) * | 2017-12-30 | 2018-06-19 | 安徽玉成光华铝业有限公司 | A kind of aluminium scrap refining agent for improving aluminium casting performance |
-
2018
- 2018-08-01 CN CN201810860387.6A patent/CN109082556A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1831161A (en) * | 2005-03-08 | 2006-09-13 | 东北轻合金有限责任公司 | Deslagging agent for high performance deforming aluminium and aluminium alloy, prepn. method and application thereof |
| CN108179298A (en) * | 2017-12-30 | 2018-06-19 | 安徽玉成光华铝业有限公司 | A kind of aluminium scrap refining agent for improving aluminium casting performance |
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Application publication date: 20181225 |